User's Manual H&L Milk Taxi

User‘s Manual H&L Milk Taxi Version 2.0.9 Legal Notice

H&L Milk Taxi User’s Manual

This manual is published under the responsibility of the company Holm & Laue. It applies to the products Milk Taxi 80 litres, 120 litres, 200 litres, and 250 litres.

It also applies to the following optional extras: • Battery-powered pump and dosing/dispensing arm • Gentle floor-installed heating foils • EL-AN electrical drive • Integrated pasteuriser • Programmable cooling • Warm water-fired heating • Dosing/dispensing unit with remote (alternative) control • Support frame for milk churn transport • Cow drenching equipment

Version 2.0.9 as of April 2012

Holm & Laue holds exclusive title to any copy or reproduction. This manual may not be reproduced, copied, disseminated, or used for competitive purposes, neither partially nor totally, unless express and written authorisation was obtained from Holm & Laue.

2 Dear Valued Customer:

Congratulations on your purchase of the H&L Milk Taxi! You have selected a high-quality product from Holm & Laue. To make your Milk Taxi your reliable companion for many years, please read carefully and conform to the safety messages in this booklet. These safety messages are identified according to hazard levels as follows.

Safety Messages

DaNger!

• This identifies a highly hazardous situation. Failure to conform to the safety message will result in severe, irreversible injury or death.

WarNINg!

• This identifies a highly hazardous situation. Failure to conform to the safety message may result in severe, irreversible injury or death.

CaUTIoN!

• This identifies a highly hazardous situation. Failure to conform to the safety message may result in light to moderate injury.

NoTe!

• This identifies a hazard for hardware and materials. Failure to conform to the safety message may result in damage to assets.

3 general Safety Messages

DaNger!

Danger to life when safety instructions are not respected. • Conform strictly to all safety messages in this manual!

DaNger! Danger to life and of casualty for children! The Milk Taxi may not be used by children. It is built with electrical and mechanical components that may cause hazards that children are unable to properly anticipate. They would be exposed to danger of death or severest injury. • Children do not anticipate the hazards to which a technical appliance may expose them! The Milk Taxi is not designed to be used by children. • Keep the Milk Taxi out of the reach of children! • The Milk Taxi must be operated exclusively by persons who are able to operate it in a safe way.

DaNger! No carrying people! • It is strictly forbidden to use the Milk Taxi for the transport of persons, animals or hazardous substances (chemicals). • In particular, it is forbidden to use the milk churn support frame for the transport of anything other than churns or buckets with milk or water in them. • Subjecting the milk churn support to any load of more than 65 kg is unacceptable and will cancel and void the warranty for the Milk Taxi as a whole.

4 DaNger! Danger of injury by moving parts of the appliance. rotating parts of the appliance (agitator) may sever body parts and get caught in clothes, both of which may result in severest injuries. • Never put your hand into the tank of the Milk Taxi while the floor-mounted agitator is running. • When the amount of milk powder to be mixed was poured into the tank, close the lid. Start the mixing agitator only thereafter. • Do not attempt to clear possible powder plugs in the pump manually. • Do not wear loose-fitting clothes and protect your hair by wearing a hairnet.

WarNINg! Beware of bruises! • While the appliance is pushed or driven, always keep the lid closed. • Secure the lid so it will not flap down when you are working with the lid open. • When you close the lid make sure that no part of your body is between the lid and the tank rim.

WarNINg! Danger of burns and scalding by the heater of the appliance. When the optional heater or the optional pasteurisation unit is used, the tank and the milk may heat up substantially while the appliance is heating, which results in a hazard for you to burn or scald yourself when touching them. • Do not touch the hot tank nor the hot milk. • When you need to touch the tank and prior to feeding the milk, check the temperature reading on the display. • Verify the correct temperature setting on the display.

5 DaNger! Danger of harmful effects to your calves’ health. • Prepare your animals’ milk diet according to the recommendations provided by the milk replacer manufacturer. • Avoid drinking temperatures in excess of 42°C (107°F), as they may cause scalding in the animals’ mouth. • Avoid too low milk diet temperatures (depending on the milk replacer used and the acid content in the milk), since they may cause undesired fermentation in the animals’ digestive system. • Wash the nursing buckets and the Milk Taxi after every feeding. Improper cleaning may cause increased bacteria growth, which would put the calves’ health at risk! • When using detergents, make sure that residues are properly rinsed out of the system. DaNger! Fire hazard. The lid of the Milk Taxi may concentrate the sun’s rays, when it is open, because of its concave shape on the inside. In this case, the focal point of the lid may develop excessive heat. • Keep the lid closed at all times. • Never leave the Milk Taxi unattended when it is outdoors.

Some parts of the Milk Taxi heat up substantially in the course of its operation. Combustible objects next to or on top of the Milk Taxi may then ignite spontaneously. This is turn may cause death and severest burns. • Prior to parking or storing the Milk Taxi, wait for it to cool down completely. • Do not store any combustible object next to or on top of the Milk Taxi. DaNger! Hazard associated with the battery. When the batteries of the Milk Taxi are damaged, they may release acids and other substances. These substances may cause intoxication and burns. • Avoid any mechanical strain that may damage the battery. • Have the battery replaced only by a qualified/licensed shop. • Avoid the battery’s discharging completely, since the fact that it is more than “normally flat” will damage it.

6 WarNINg! Hazards during milk transport. The Milk Taxi is mounted on a travelling chassis that allows pushing it manually to the pen to feed the calves. The tank may tilt over if the ground is not level, then affecting persons present. This may result in bruises, cuts, and other injuries. • Always prevent the Milk Taxi from rolling on by pulling the parking brake. • Persons present — especially children — should always keep a safe distance to the Milk Taxi. • Persons unfamiliar with the appliance must never operate the Milk Taxi with EL-AN electrical drive. • Make sure the way that the Milk Taxi will travel is level and solid, ideally paved. Potholes and soft ground (sand, gravel, snow) are likely to hamper the movement of the Milk Taxi.

When the EL-AN electrical drive is used, special attention has to be paid to safe milk transport with the Milk Taxi. The drive is very powerful. In particular, problems of stability may occur while driving through a bend. • Prevent accidental movement of the Milk Taxi (250 litres) by using the supplied wheel chocks. This model version is designed as a trailer behind a quad or similar, without its own brake. • The maximum speed of travel with a Milk Taxi 250 litres should never exceed 6 km/h. The Milk Taxi is not authorised for road traffic.

NoTe! Material damage by frost. • When the temperature is below 0°C (32°F), humidity in the Milk Taxi may freeze. This may cause malfunctions. • Never store the Milk Taxi in an environment where the temperature decreases to below 3°C (38°F). Any damage caused by frost will cancel the warranty under which the product is.

7 NoTe! Danger of material damage. • The mixing agitator and the optional extras Pump Heater, and Pasteuriser must never run if there is no liquid in the tank. Damage the appliance sustains because the mixer or the pump turned dry or the heater over- heated is not eligible for warranty claims. • Turn the Milk Taxi off immediately at the On/Off switch if you notice an altered or uncommon sound of the motor or the pump. Then have a qualified shop check and repair the malfunction. • After cleaning the Milk Taxi, the drain tap should be opened to empty the remaining liquid from the tank. This is required in winter, in particular, to avoid liquid residues freezing in the draining pipe or the pump. • Prevent objects from falling into the tank. Foreign bodies may damage the pump and the agitator. • Use only genuine spare parts from the company Holm & Laue. Using other parts will cancel any and all warranty under which the product is.

NoTe! Using beestings for pasteurisation prohibited. • The protein structure of colostrum is different from that of normal whole milk. Beestings proteins may de- naturate under the influence of heat. This, in turn, leads to reduced milk quality and may result in attaching agglutinations and burnt milk in the Milk Taxi. Such deposits will overstress the heating element and may lead to its failure. Therefore, do not use colostrum with a dry matter content in excess of 15% in your H&L Milk Taxi! If any deposits form in the tank, remove them immediately. repeated pasteurisation of milk prohibited. • The pasteurisation slightly lowers the pH of the milk. Repeated milk pasteurisation may result in substantial quality loss. For instance, the milk may turn butter as through churning. Feeding and pasteurising milk that contains antibiotics prohibited. • The calves should not be fed any milk containing antibiotics, as there is a risk of bacteria resistance development. Also, the heat treatment will not result in the inactivation of these antibiotics. • Due to the change of the chemical properties of the milk through the prcoess, its pasteurisation may result in flocculation.

8 Table of Contents

Understanding Operation ...... 10 Technical Specifications ...... 12 Understanding the Appliance ...... 13 Control Panel ...... 14 Checking the Appliance out Prior to First Use ...... 16 Checking out an Appliance with Battery-powered Pump ...... 17 Switching the Milk Taxi on ...... 17 The Function Key F1 ...... 18 Dissolving Milk Replacer with the Floor-mounted Mixing Agitator ...... 20 Warming Whole Milk with the Heating Foils Installed on the Floor ...... 22 Dispensing the Milk Diet with the Battery-powered Pump and the Dispensing Arm ...... 24 Calibrating the Automatic Dosage Control ...... 25 Dosing Milk Diet Using the Automatic Dosage Control ...... 26 Pasteurising Milk with the H&L Milk Taxi Pasteuriser ...... 28 Starting the Pasteurisation Manually ...... 30 Starting the Pasteurisation Automatically ...... 32 Programming Illustrations ...... 35 Warming and Pasteurising Whole Milk with the Hot Water-fired Heater ...... 36 Cooling Milk ...... 38 Drenching Cows with the Drenching Probe ...... 42 Battery-powered Electrical Drive EL-AN ...... 44 Battery Status Indications ...... 46 Cleaning ...... 48 Disposal ...... 50 Troubleshooting ...... 51 Application for Warranty ...... 55

9 Understanding operation

Intended Use

The H&L Milk Taxi is designed for preparing and dosing calves’ milk diet. Its drenching equipment also allows drenching cows.* Do not fill anything other than water, whole milk or milk replacer and water into the tank.

The pasteurisation feature is designed exclusively for the treatment of calves’ milk diet and for heating water. Any other use or purpose cancels any and all warranty under which the product is. Holm & Laue cannot be held liable for bodily injury or material damage that is the result of improper handling and/or use of the H&L Milk Taxi.

DaNger! Danger to life by failure to conform to the user’s manual. • Make sure that all persons who operate the Milk Taxi have read and understood the user’s manual and the safety messages. • The user’s manual has to be kept ready at hand close to the Milk Taxi at all times.

* Comply with all applicable national laws and rules on cow drenching. 10 Unintended Use

Any use other than those quoted above as intended uses is considered an unintended use.

Note in particular: • Never pasteurise beestings / colostrum! The protein structure of colostrum is different from that of normal whole milk. The proteins beestings contain may become indigestible by the heat treatment, thereby putting the calves’ health at risk. The loss of quality that the milk sustains can be seen from agglutinations and burnt milk deposited in the Milk Taxi. • Never put food for human consumption, such as soup, coffee or tea, into the tank. • Never put harmful or toxic solutions into the tank (the only exception being common cleaning agents for milking installations)! In no circumstances put any hard or pointed objects into the tank, and don’t pour inhomogeneous liquid into it. All of them may damage the mixing agitator and the heating foils installed on the floor.

Residues in the tank may contaminate the milk diet the calves are fed, thereby putting their health at risk, even when the tank was cleaned before being used again.

• Prepare your animals’ milk diet according to the recommendations provided by the milk replacer manufacturer. • Avoid drinking temperatures in excess of 42°C (107°F), as they may cause scalding in the animals’ mouth. • Avoid too low milk diet temperatures (depending on the milk replacer used and the acid content in the milk), since they may cause undesired fermentation in the animals’ digestive system. • Wash the feeder buckets and the Milk Taxi after every feeding. Improper cleaning may cause increased bacteria growth, which would put the calves’ health at risk! • When using detergents, make sure that residues are properly rinsed out of the system.

11 Technical Specifications

Mains power supply 230 V, 16 A; 400 V, 16 A; or 230 V, 32 A Pump capacity approx. 40 l/min (10½ gpm) Heating element power 3 kW, 5 kW or 6 kW Agitator power 500 W Tyre size 265 mm (10½") Tyre pressure 2.5 bar Operating voltage of internal battery 12 V; EL-AN: 24 V Water supply nipple (cooling coil) ½" Min. storage temperature 3°C (38°F) Pasteurisation temperature 64°C (147°F) Max. load of milk churn support frame 65 kg (147 lbs) Pressure at water supply inlet min. 1 bar, max. 6 bar Pressure at water connection outlet non-pressurised, max. head 3 m (10 ft)

Dimensions Operating Tank Capacity Absolute Tank Capacity Width (cm/ft, in) Length (cm/ft, in) Height (cm/ft, in) Milk Taxi 80 l 80 l (21 gal) 100 l (26½ gal) 60 (1' 11½") 85 (2' 9½") 102 (3' 4") Milk Taxi 120 l 120 l (31½ gal) 150 l (39½ gal) 75 (2' 5½") 100 (3' 3½") 102 (3' 4") Milk Taxi 200 l 200 l (52¾ gal) 240 l (63¼ gal) 75 (2' 5½") 115 (3' 9¼") 120 (3' 9¾") Milk Taxi 250 l 250 l (66 gal) 290 l (76½ gal) 120 (3' 9¼") 140 (4' 7") 125 (4' 1¼")

12 Understanding the appliance

On the following pages, the various functions and modes of operation of the Milk Taxi are explained in detail. It’s so easy we just want to wish you having fun playing around and feeding your calves with your Milk Taxi.

The standard version of all Milk Taxis comprises the following equipments.

Lid The handle of the lid doubles as a locking latch. In the normal flow of operation, a sealing ring prevents liquid from splashing out of the tank.

Control Panel The control panel is located in the upper part of the Milk Taxi. Depending on the exact configuration of the unit, some keys may be inactive. Only with the pasteuriser* and the EL-AN drive*, all features are enabled.

Handles The 80 - 200 litre Milk Taxis have solid handles. Depending on the level of equipment, the pump pushbutton and the steering lever for the EL-AN electrical drive are incorporated into them.

Draining Tap The draining tap allows emptying the Milk Taxi completely. To empty the hose in the process, also open the check valve of the dispensing arm.

Parking Brake The parking brake is located on the right-hand pivoting wheel. This brake avoids unwanted rolling of the Milk Taxi. Whenever you leave the Milk Taxi, the parking brake should be pulled.

* optional Milk Taxi outfitting component 13 Control Panel

The H&L Milk Taxi has an equipment cabinet in which the technical components of the appliance are located. On its top edge, a control panel is fitted. Depending on the level of equipment, some of the control keys may be disabled. Only if the Milk Taxi is equipped with pasteurisation unit and EL-AN drive, all keys are active. As an introduction, the principal functions of the control panel are explained on the next page.

1 Pump Tel.: +49 (0) 4331 20174-0 Fax: +49 (0) 4331 20174-29 2 Plus and Minus keys www.holm-laue.de 3 Cool 4 Heat 5 Function key 6 Pasteurise 06:35 29°C 40°C 7 EL-AN drive key Dosing Qty: 1,6 l 8 Agitate 9 Battery status indicators

14 1 2 3 4 5 6 7 8 9 The Pump key switches the pump on (continuous operation) or off. (Timed pumping is enabled by pushing the pushbutton on the handle of the appliance.) As soon as the pump runs, the status LED lights up.

The Plus and Minus keys are used for various purposes. For instance, they can be used during feeding to change the dispensed quantity for individual calves.

The Cool key starts manual, positive milk cooling (available only with pasteuriser).

A short press on the Heat key launches milk warming. As soon as the heating process starts, the status LED indicates this.

The function key F1 is used for various tasks.

The Pasteurise key allows the programming of the pasteurisation cycles and, when pressed for just a short moment, starts the pasteurisation manually.

To mix the milk replacer into the liquid, press the agitate key to start the mixing agitator on the floor of the tank. As soon as the mixer motor is on, the status LED indicates this.

The eL-aN drive key is used to select one out of two speeds of the electrical drive motor. The left-hand status LED indicates that the lower gear is active, the right-hand LED is for the higher gear.

The battery status LEDs indicate that the battery is discharged (lower, red LED) or fully charged (upper, green LED). The right-hand LEDs refer to the battery of the pump, the LEDs on the left-hand side to that of the EL-AN drive

15 Checking the appliance out Prior to First Use

To ensure reliable operation, please conform to the following indications on the preparation of the milk room in which the Milk Taxi will be used:

Power Supply Depending on your Milk Taxi, it requires mains power supply of 230 V, 16 amps (Milk Taxi 80 litres) or 400 V, L2 L3 16 amps or 230 V, 32 amps (Milk Taxi 120 - 250 litres). The Milk Taxi has to be earthed through its connection to power supply. This means that the Milk Taxi has to be connected to the mains with a power socket with L1 N! protective contact in compliance with all applicable rules. Pe Water Supply Connecting the appliance to a mains hot and cold water supply is also recommended. When a water tap is located at a height of 1.25 m (4 ft) above the floor, it is possible to push the Milk Taxi under the tap and fill it effortlessly. To drain remaining milk and rins- ing water cleanly, a drain in the floor is also recommended. environment To avoid damage by frost to the Milk Taxi, the storage room and the room where the calves’ milk diet is prepared have to be frost- proof. The minimum operating temperature of the Milk Taxi is 3°C (38°F).

Milk Taxi Cleaning Thoroughly rinse the Milk Taxi prior to using it for the first time, to remove any solvent or detergent residues in the tank.

16 Checking out an appliance with Battery-powered Pump*

The dispensing/dosing arm is an optional feature. If your Milk Taxi is equipped with a battery-powered pump and dispensing arm,* the following two steps are recommended before using it for the first time.

1. Charge the battery. The battery that powers the pump was fully charged before shipment and checked at the manufacturer’s. During storage and transport, however, it may partially discharge.

1. Connect the Milk Taxi to mains power. 2. Switch the Milk Taxi on at the On/Off switch.  This will cause the battery to be charged; the upper, green LED flashes. At its first charging, charge the battery for at least 12 hours. Charging the battery several hours every day is recommended, in order for it to be fully charged whenever needed.  The Milk Taxi is now ready for operation.

2. Calibrate the dispensed quantity. Proceed as explained on page 25.

Switching the Milk Taxi on

Switch the Milk Taxi on at the On/Off switch. The display first shows the installed version of the software. A few seconds later it changes and shows the start screen with the current time-of-day, current temperature in the tank, and the currently set nominal temperature. The second line displays the currently set quantity to be dosed/dispensed (if the Milk Taxi is equipped with a dosing pump*). The indicated quantity is the result of the previous calibration of the pump run times (see page 25).

06:35 29°C 40°C The display screen works even when the Milk Taxi is not connected to power (it uses the integrated Dosing Qty: 1,6 l battery). The screen switches to stand-by and is no longer lit after approx. 20 minutes of inactivity. As soon as a key is pressed the display lights up again automatically.

* optional Milk Taxi outfitting component 17 The Function Key F1

The function key F1, when pressed for a short moment, saves values to system memory that were modified in the various menus for a given feature. The exact function the key has in a given situation is described in the appropriate section of this booklet. In the standard display, the screen may read, for instance, as follows:

06:35 29°C 40°C Dosing Qty: 1,6 l

Setting the Time of Day

1. When the standard screen is showing, hold the function key F1 down for 3 seconds.

Thereby, you will proceed to the time-of-day screen. The following screen is displayed:

Settings Time 13:15:23

2. Activate a cursor by pressing the function key F1 and move it to the right as appropriate by pressing the function key F1 several times.

3. Adjust the various places of the time of day with the Plus and Minus keys.

4. To quit the screen and return to the standard screen, hold down the function key F1 for 3 seconds.

18 19 Dissolving Milk replacer with the Floor-mounted Mixing agitator

DaNger! Danger of injury by moving parts of the appliance. Danger of burns and scalding by the heater. • Prior to starting milk replacer mixing with the agitator, close the lid and press the appropriate controls only thereafter. • Before checking if the replacer dissolved totally, wait for the mixing agitator to stand still. • The features Mixing and Heating can be used only when the tank is full. An electrode in the tank senses the liquid level and, if too low, causes an error message (“Container empty”) on the screen.

NoTe! • Make sure that the milk replacer manufacturer’s indications on mixing temperature are respected in all cases. • Don’t forget that, mainly in the winter, the milk may cool down in the nursing buckets that the calves are fed with. • To finish, check if the milk diet was heated to the desired temperature and readjust it with hot water or cold water and milk replacer as needed. • You may switch on the heating element* as needed by pressing the Heat key and warm the milk diet to a higher temperature. See also the instructions on pages 22 f. • Fill the tank to at least half of its nominal volume.

* optional Milk Taxi outfitting component 20 Dissolving Milk replacer

1. Connect the Milk Taxi to mains power and switch it on at the On/Off switch. 2. Put the desired amount of warm water into the Milk Taxi tank. To avoid excessive splashing, it is recommended that the tank is at least half full of water. 3. Then pour the desired amount of milk replacer into the tank. 4. If the tank is less than half full of milk, close the lid to avoid excessive splashing of milk when the powerful agitator will be turning.  The recommended minimum liquid level to operate the appliance is 30% of the tank capacity! 5. Press the agitate key to start the floor-mounted mixing agitator.  Its status LED indicates that this function is currently active. 6. When the replacer powder is sufficiently dissolved, press the agitate key again to switch the mixer off.  The status LED goes off.

If the powder has not sufficiently dissolved: 7. Close the lid. 8. Restart the floor-mounted agitator.

21 Warming Whole Milk with the Heating Foils Installed on the Floor*

The fact that the heating element is running will be indicated by the appropriate status LED and by an information text on the display. When the set nominal temperature is reached, the LED remains lit while the heating element is switched off automatically. The heating element resumes heating if the milk cools down to a temperature below the target level. It consistently warms the entire floor of the tank, thereby avoiding heat application to an area that is so small that it might result in burnt milk.

While heating is in progress, the floor-mounted agitator stirs the milk periodically. This enhances the Milk Taxi’s heating performance and reduces even further the risk of burnt milk.

CaUTIoN! Danger of injury because of burns and scalding. • Prior to warming the milk, close the lid and then only press the Heat key. • The features Mixing and Heating can be used only when the tank is full. An electrode in the tank senses the liquid level and, if too low, causes an error message (“Container empty”) on the screen.

NoTe! • Be aware of the time it will take to warm the milk. When the tank is full to the nominal capacity, it will take approx. 30 minutes for your Milk Taxi to raise the temperature of the milk by 10°C (18°F). • Don’t forget that, mainly in the winter, the milk may cool down in the nursing buckets that the calves are fed with. • While the whole milk is being heated, the mixing agitator on the floor of the tank is switched on at regular intervals for a couple of seconds.

NoTe!

• The use of the heating element may result in small deposits of milk on the floor of the tank. After every cycle of using the Milk Taxi, the tank has to be cleaned with an appropriate cleaner (e. g. TaxiClean) and a brush.

* optional Milk Taxi outfitting component 22 Warming Whole Milk To set the desired target temperature of the milk, proceed as follows:

1. Hold the Heat key down for 3 seconds.  The “Set Temperature” screen is displayed.

2. Using the Plus and Minus keys, set the desired target temperature to which the milk should be warmed.

To save the target temperature to memory, continue as follows:

3. Hold the Heat key down for 3 seconds.  This causes the temperature value to be saved to system memory, and the standard display screen shows again.  The new temperature value is displayed in the upper right-hand corner of the screen.

In the normal flow of everyday practice, this process is not needed; once set, the temperature value will in general be kept.

Switching the heating off early

1. Press the Heat key.  This will cause the LED to go off.

Timed Heating

The Pasteurise key allows presetting a start time for milk warming even when the appliance is not equipped with a pasteurisation unit. This process is analogous to that of automatic pasteurisation as described on page 32.

23 Dispensing the Milk Diet with the Battery-powered Pump and the Dispensing arm*

As soon as the milk diet is prepared and ready to feed, close the lid of the tank and push the Milk Taxi to the calf pens (80 - 200 litre model versions) or pull it there with a tractor vehicle (250 litre model version). To fill the nursing buckets or the feed bowls there are several possibilities:

1. Manual dosing by pressing the Pump key

To switch the pump on and off, press the key on the control panel for a short moment. When the pump is running, the status LED on the key is lit.

2. Automatic dosage control

In the left-hand handle of the Milk Taxi (80 - 200 litres) you will find another dispensing pushbutton which, when pushed, will cause a previously set quantity of milk diet to be sent to the bucket. In the 250 litre model version of the Milk Taxi, this same control can be found on the remote control box. When dosing is in progress, another press of the button stops the dispensing process.

3. Automatic dosage with the alternative control

Select the desired quantity using the Plus key. The identifier number increments at every keypress. To start dispensing this quantity, press the Pump key. By pressing the key once more, you stop the dosing in progress.

* optional Milk Taxi outfitting component 24 Calibrating the automatic Dosage Control

Before you can work with the dosage control, you have to calibrate the desired amounts to dispense according to their pump run times and set which number identifies them. To do so, first fill the Milk Taxi with milk or water and have a container of about 5 litres (1¼ gal), e.g. a bucket, ready. You can define up to 5 dosing quantities/amounts to dispense.

Setting the dosing quantities is a two-step procedure.

Hold the Pump key down for 3 seconds.  This will cause the message “Calibrate, start F1” to be displayed.

1. First calibrate the flow rate.

Press the function key F1; the following message is displayed, “5 l container, F1 to continue”.

Hold a container with a capacity of about 5 l (1¼ gal) (bucket or similar) below the dispensing arm outlet. When you press the function key F1 again, the pump delivers liquid to the container. Measure the volume of liquid delivered; this is the calibration value that you will have to enter on the control panel by adjusting the one currently displayed. Adjusting this value is done using the Plus and Minus keys.

Confirm the value you just entered by pressing the function key F1. You may, however, repeat the whole process as needed.

25 2. Then set the desired dosing quantity.

From the display message “Calibrate, start F1”, pressing the Plus and Minus keys will let you access five different pump run times. Each pump run time is represented by the quantity it will deliver, which you can change after accessing it. Pressing the function key F1 will enable a cursor in that quantity and when the cursor flashes, you can change the dosing quantity using the Plus and Minus keys.

TIP: Pressing the Plus and Minus keys briefly will change the tenth-of-a-litre digit. Pressing them longer will change the one-litre digit.

Confirm the value you just entered by pressing the function key F1.

To quit the calibration routine, hold down the Pump key for 3 seconds.

Dosing Milk Diet Using the automatic Dosage Control

80 - 200 litre model versions

1. Take the dispensing arm out of the return line funnel and turn it sideways to its dispensing position. This is particularly useful in cases where the nursing buckets are aligned one after the other.

Or…

If the position of the buckets is too high or too low or totally inaccessible to the dispensing arm outlet, lift the arm from its swivel point and hold it in your hand.

2. Use the Plus and Minus keys to select one of the preset dosing quantities.

26 3. Then push the button on the left-hand handle for a short moment. The preset amount of milk diet will then be dispensed into the bucket. While the pump is running, the green status LED in the Pump key in the left-hand portion of the display and control panel is lit.

Milk diet dosage control using the radio remote control*

If the Milk Taxi is equipped with an alternative control on the handle, its Plus button can be used to select the desired dosing quantity. This quantity to dispense is not displayed itself, but as a number from 1 to 5 (corresponding to the number of the pump run time that was previously calibrated). When the dosing quantity is modified, the displayed number lights up for a short moment.

As opposed to using the control panel, the dosing quantity cannot be changed both ways (only ascending). After quantity/run time number 5 was selected the next push of the button will select number 1.  Start the dosing process by pressing the Pump button on the remote control; the number will light up a little for a short moment.

NoTe! • Ensure that the check valve of the dispensing arm closes tightly. Straws or other foreign bodies may be the cause for milk dripping out of the dispensing arm. • There is also a risk for air to penetrate into the dispensing line, thereby lowering the milk column in the line, which may result in a bias in the amount of dispensed milk diet.

* optional Milk Taxi outfitting component 27 Pasteurising Milk with the H&L Milk Taxi Pasteuriser*

If your Milk Taxi is equipped with a pasteurisation unit, you have the possibility to reduce the bacteria load of the milk substantially. After the pasteurisation cycle is finished, the bacteria load in the milk is less than 0.5% of the load before the process. Therefore, this is a cornerstone of very healthy calf rearing.

DaNger! Danger of burns and scalding by the heater. • When the optional heater or the optional pasteurisation unit is used, the tank and the milk may heat up substantially while the appliance is heating, which results in a hazard for you to burn or scald yourself. Do not touch the hot tank nor the hot milk. NoTe! • The pasteurisation feature is designed exclusively for the treatment of calves’ milk diet. • Any other use or purpose cancels any and all warranty under which the product is. Holm & Laue cannot be held liable for bodily injury or material damage that is a result of improper handling and/or use of the pasteurisation feature. NoTe! Using beestings for pasteurisation prohibited. • The protein structure of colostrum is different from that of normal whole milk. Beestings proteins may de- naturate under the influence of heat. This, in turn, leads to reduced milk quality and may result in attaching agglutinations and burnt milk in the Milk Taxi. Such deposits will overstress the heating element and may lead to its failure. Therefore, do not use colostrum with a dry matter content of in excess of 15% in your H&L Milk Taxi! If any deposits form in the tank, remove them immediately. NoTe! repeated pasteurisation of milk prohibited. • The pasteurisation slightly lowers the pH of the milk. Repeated milk pasteurisation may result in substantial quality loss. For instance, the milk may turn butter as through churning.

* optional Milk Taxi outfitting component 28 NoTe!

• Fill the tank at least to half its nominal capacity. A possible orientation is the cooling jacket. It should be in contact with the liquid for its full height.

The Milk Taxi pasteuriser works in the form of a batch pasteuriser, i.e. it pasteurises the total amount of milk in one go at 64°C (147°F) in a period of 35 minutes. This is particularly practical insofar as you do not need any additional containers or fixtures to store, transport, and dose the milk. The following graph shows a typical development of bacteria load in relation to the pasteurisation process.

Process Steps in an Automatic Pasteurisation Cycle

70000 70

60000 Nbr Bact. 60 E. coli, Staphylococci, 50000 Enterococci, etc. 50

40000 40

30000 Milk Storage Feeding 30

20000 Pasteurisation Stage 20 Milk Temperature 10000 10

Number of Bacteria 0 0 in °C Temperature, Milk 4:00 5:30 Time of Day 6:00 18:00

29 Starting the Pasteurisation Manually

Preparing the Manually Started Pasteurisation Cycle

1. Tightly roll the hose around the tank.

2. Fit the dispensing arm tightly with its check valve end into the return line funnel of the tank and fasten it by pushing up the locking ring of the rubber bushing, to make sure that it does not draw air. Such air may cause considerable foaming.

3. Connect the cold water supply to the CoLD IN hose fitting and open the water tap fully. Locking ring down – Locking ring up – dispensing arm not fastened dispensing arm fastened 4. Close the lid.

5. Press the Pasteurise key to start the pasteurisation manually. The pasteurisation cycle follows a set time and temperature development.

After the pasteurisation was started, the display looks as below:

17:15 29°C 64°C Pasteurise

Progress of the Procedure

During the heating stage, the LED of the Heat key flashes. During the pasteurisation stage, a countdown is displayed to show the remaining pasteurisation time. After it pasteurised the milk, the Milk Taxi cools it down while indicating this stage by the letter C on the display.

30 During pasteurisation, the floor-mounted agitator and the pump run at defined intervals to ensure that the pasteurisation extends consistently to all the milk in the tank.

At the end of the pasteurisation stage (35 minutes at 64°C (147°F)), the milk is cooled down automatically using cold water. The desired cooled-down temperature can be set in the pasteurisation settings mode using the Plus and Minus keys. A good strat- egy is to have it cooled down to the desired drinking temperature, thereby avoiding that the milk has to be heated up again later.

After successful pasteurisation, the display shows the information text “Pasteurisation o.k. – press F1 to cancel”. When the pasteurisation is successfully over, the Milk Taxi automatically keeps the milk at the preset end-of-cycle temperature and heats again as needed (flashing the appropriate indicator LED while heating is in progress).

NoTe! Pasteurisation Duration • The full pasteurisation cycle, including heating, pasteurisation, and cooling stages, may take anywhere from 1.5 to 3 hours, depending on the liquid level in the tank. As a rule of thumb, think of 30 minutes as the time it takes for the heating element to raise the temperature in the tank full of liquid (irrespective of the model version) by 10°C (18°F). aborting the Manual Pasteurisation

1. Press the Pasteurise key.  The display shows a confirmation message that asks you if you want to stop the process.

2. Confirm by pressing the function key F1.

31 Starting the Pasteurisation automatically

You can program up to three times for a pasteurisation cycle to start automatically. This is particularly useful when it is not planned to pasteurise the milk immediately after filling the Milk Taxi, e.g. when the milk from the evening milking should be pasteurised overnight to have it ready for feeding in the morning.

Preparing the automatically Started Pasteurisation Cycle

1. Tightly roll the hose around the tank.

5. Hold the Pasteurise key down for 3 seconds to set the start times.

The display then shows the following screen:

A:00:00 B:00°C C:00:00 D:00°C

The A time is the time-of-day when heating should start. To change this value, proceed as follows:

32 6. Press the Pasteurise key for a short moment; this enables the cursor. Using the Plus and Minus keys, you can then set the hour of the start time.

TIP: Pressing the Plus and Minus keys briefly will change the ones of the hour. Pressing them longer will change the tens of the hour. The same holds for changing the minutes of the time of day.

7. To confirm your input, press the function key F1. Then set the minute of the heating start time.

8. Again, confirm your input with the function key F1.

The B value is the end-of-cycle temperature, in centigrades, to which the milk should be cooled down after the pasteurisation stage. This may be, for instance, 15°C (59°F) when you want to store the milk for some time after the cycle. You may also set 40°C (104°F) when you want to go on feeding the calves right away. This avoids having to heat the milk up again.

NoTe! • The pasteurisation stage proper (duration and temperature) cannot be modified. These values are set in the maintenance menu of the appliance and they should not be changed in any event as such a modification may compromise the success of the pasteurisation!

When you want to store the milk for some time after the pasteurisation and heat it again later, keep in mind that the end-of-cycle temperature should be low enough, e.g. 15°C (59°F). (It should be higher than the cold water temperature, though, and the minimum is 8°C (46°F)!)

The C value allows programming another time-of-day, at which the milk should be warmed again subsequent to cooling. The D value corresponds to the desired drinking temperature to warm it to.

NoTe! • Keep in mind that, here too, the Milk Taxi needs approx. 30 minutes to cover a temperature difference of 10°C (18°F) in the full tank. If the liquid level in the tank is lower, the process takes less long. If the C value is not modified from the preset 00:00, no subsequent heating stage is started automatically. 33 9. To disable the modification cursor, press the Pasteurise key once again.

10. You may then set another automatic pasteurisation cycle by pressing the function key F1. Follow the same procedure as above.

A maximum of three automatic pasteurisation start times can be programmed in this manner (A, B, C, D – E, F, G, H – I, J, K, L). The following figure shows the temperature graph of the cycle, along with the letter-coded reference points for the temperatures.

°C

D, H, L

B, F, J

t A, E, I C, G, K

11. To cancel the pasteurisation parameter setting in progress, hold down the Pasteurise key for 3 seconds.

34 Programming Illustrations

As an illustration, please read the following three examples that show various possibilities of working with pasteurisation cycles.

1st example The milk is milked in the evening and should be pasteurised and ready for feeding in the morning.

At 04:00 a.m. the Milk Taxi starts heating the milk. When the tank is half full and the start temperature in it is 15°C (59°F), it takes 1.5 hours to reach the pasteurisation temperature, 64°C (147°F). The Milk A:04:00 B:40°C Taxi then keeps the tank at this temperature for 35 minutes and cools the milk down thereafter to C:00:00 D:00°C the drinking temperature, 40°C (104°F). The milk, accordingly, is ready for feeding at 40°C (104°F) at around 06:00 - 06:30 in the morning.

2nd example The milk should be pasteurised after the morning milking and then cooled down for storage to 15°C (59°F). It should then be warmed to drinking temperature automatically in the afternoon. E:08:00 F:15°C At 08:00 a.m. the Milk Taxi starts heating the milk. When the tank is full and the start temperature G:15:00 H:40°C in it is 25°C (77°F), it takes 2 hours to reach the pasteurisation temperature, 64°C (147°F). The Milk Taxi then keeps the tank at this temperature for 35 minutes and cools the milk down thereafter to the storage temperature, 15°C (59°F). At 15:00 (3 p.m.), the milk is heated again until the drinking temperature is reached, 40°C (104°F). That is, the milk will be ready to be fed at around 16:30 (4.30 p.m.).

3rd example The milk should be heated automatically in the morning, without pasteurisation. I:00:00 J:00°C The heating element is started at 04:00 a.m. and heats the milk until the set temperature is reached, K:04:00 L:39°C 39°C (101°F). The settings I: 00:00 and J: 00°C mean that pasteurisation is disabled.

35 Warming and Pasteurising Whole Milk with the Hot Water-fired Heater*

CaUTIoN! Danger of injury because of burns and scalding. • Prior to heating the milk, close the lid and press the Heat key only thereafter. • Water draining out of the hot water-fired heater may be very hot and a hazard of scalding.

NoTe! Maximum water temperature • To prevent milk from attaching to the hot water/cooling heat exchange coil and burning, the temperature of the supplied hot water should not exceed 72°C (161°F). A pre-mixer tap may be needed to control and reach the appropriate temperature.

The way in which the hot water-fired heater operates is preset ex works. Parameters can be adjusted by your service partner at the moment of checking the system out, if your situation has particular requirements. If any parameters change in the course of using the system (e.g., the temperature of the supplied hot water), contact your service partner.

The general way of operation of the Milk Taxi is not altered in any way by the optional hot water-fired heater, which means that the sections of this manual on heating and pasteurising whole milk in general are valid without changes for an appliance with hot water-fired heater too.

Preparing Heating the Milk with the Hot Water-fired Heater

While heating is in progress, the Milk Taxi has to be connected to a power supply and the heat exchanger coil for heating/cooling has to be completely covered in milk.

1. First connect the water supply hose for hot water to the hose connector HoT IN and open the water tap. A water valve inside the Milk Taxi avoids water draining uncontrollably.

* optional Milk Taxi outfitting component 36 2. Consider also connecting a second water hose to the HoT oUT port. This will enable you to recycle the water for other purposes (e.g. drinking water for cows, water for cleaning the parlour).

Starting Heating the Milk with the Hot Water-fired Heater

1. Close the lid and then press the Heat key. 2. To abort the heating process early, press the Heat key again. 15:30 18°C 40°C  The temperature of the supplied water is measured by a sensor and displayed in the lower line Heat 65°C of the screen (65°C in this example).

Water Saving

In the normal flow of operation and with sufficiently hot water, the electrical heater will not operate at all. If the temperature of the supplied hot water is too low (too small a difference between the supply water temperature and the temperature inside the tank), the appliance switches the electrical heater on automatically. restarting the Hot Water-fired Heater

1. Switch heating off by pressing the Heat key.

2. Switch the hot water-fired heater on again by pressing the Heat key once more.

37 Cooling Milk*

The Milk Taxi pasteurisation unit* includes a cooling coil in the tank. This heat exchanger allows milk cooling with cold water as coolant. A double-wall version of the product is availble as an option; this version cools the milk in the tank from the outside.

Preparing Milk Cooling

1. Start by connecting a water supply line to the hose fitting labelled CoLD IN of the tank and open the water supply. A water valve in the Milk Taxi ensures that the water is not wasted, uncontrollably draining from the appliance.

2. Then connect another water hose to the second port, called CoLD oUT. This out line allows recycling the water warmed by the heat exchange process for other purposes after cooling (for cows to drink, for cleaning the milking parlour, etc.).

The electronic control also allows continued cooling operation. This means that the Milk Taxi works on keeping the calves’ milk diet at the set temperature by resuming cooling as needed. As a result, warm milk put into the tank at a later stage (i.e. in a system where a robotic milker fills the appliance) is cooled down as well, and milk warming because of high ambient temperatures is avoided.

Setting Cooling Parameters

1. Hold the Cool key down for 3 seconds. The first parameter is the desired cooled temperature for Cooled Temperature storage that the milk should have. 16°C

2. Set this value using the Plus and Minus keys. A storage temperature after cooling of 15°C (59°F) is sufficient in general to keep the calves’ milk diet fresh for 12 hours. If a lower temperature is selected, water consumption increases considerably.

* optional Milk Taxi outfitting component 38 3. Pressing the function key F1 will take you to the next parameter. The cooling delay is used to Cooling Delay start cooling only a certain time after the tank started being filled (i. e., provided a sufficient liquid level is sensed). This avoids unnecessary cooling of small quantities of milk (e. g. from a robotic 90 min milker) when the filling only just started. This value, too, is set using the Plus and Minus keys. To start cooling immediately after filling started, set this parameter to 0.

4. The following parameter sets the temperature difference experienced by the milk in the tank that Resume Cooling triggers the cooling element to resume cooling. This feature, too, is meant to reduce water con- 5°C sumption as it makes sure that the cooling process runs by intervals rather than continuously.

5. An automatic stop of the cooling operation a certain time period before the start of a pasteurisa- Autostop before Pa tion cycle can be programmed. This saves energy, as milk is not cooled down just before being 180 min heated.

NoTe! • Be sure that the cooled storage temperature is not set too low. If the difference between the desired cooled temperature and the temperature of the water used as a coolant is too small (differing by less than 5°C (9°F)), then the Milk Taxi may require substantial amounts of water to perform the cooling operation. • If the temperature difference is too small altogether, the desired cooled temperature cannot be achieved. In this case, cooling is aborted automatically after a certain time.

Starting Cooling

DaNger! Danger of injury by moving parts of the appliance. • Prior to starting cooling, close the lid. • Be sure that the water supply line is connected and that the water tap is open.

39 1. Press the Cool key to start the cooling cycle with cold water: water valve opens, floor-mounted agitator stirs the milk at intervals to positively cool all of it down consistently.  The cooling can be stopped by a short press of the Cool key.

Display Screens in Cooling Mode

While the cycle is running, the screen displays various messages, as explained below.

If the Cool key is pressed when the tank is empty, the display looks like the figure to the right. In this Cooling Mode 16°C situation, the Milk Taxi waits for the tank to be filled (must sense a liquid level at the level electrode). Container Empty

The shown temperature value is the desired cooled temperature. As soon as the tank is filled (liquid Cooling Mode 16°C sensed at the electrode), the count-down to start of cooling is initiated. Start in 72 min

When the Milk Taxi begins positive cooling, the display to the right is shown. The temperature value in Cooling Mode 16°C the lower line is the current temperature sensed in the tank. Cooling 30°C Cooling is suspended (paused) as soon as the set cooled temperature is reached. The Milk Taxi con- tinues sensing the temperature in the tank and resumes cooling the milk when its temperature rises Cooling Mode 16°C (because of new milk flowing into the tank or high ambient temperatures). Cooling Pause 19°C

At the beginning of the time delay prior to pasteurisation in which cooling is auto-stopped, another count-down is displayed, this time to show the remaining time to the pasteurisation cycle. The first 18:30 19°C line shows the current time of day along with the current milk temperature Pasteur. in 125 min

40 Cooling Using the Cooling Jacket

NoTe!

• The cooling jacket is equipped with a pressure relief valve. If the pressure in the cooling jacket exceeds the threshold of 1 bar, the valve opens to drain water in order to avoid the jacket’s bursting.

The progress and the settings of the pasteurisation process are identical for both model versions (cooling coil in tank/cooling jacket in double wall). However, the appliances with the cooling jacket will drain the water in the jacket after the cooling process. Draining is automatic, through a valve in the floor of the tank. Therefore, it is absolutely necessary that the Milk Taxi is in an area with a drain in the floor while the cooling process runs.

41 Drenching Cows with the Drenching Probe*

CaUTIoN! Danger of injury caused by the drenching probe. • When the probe is being inserted, there is a risk for the cow's gullet to be injured. • After the insertion of the probe into the rumen, a check for the expected smell has to be performed (a slightly sour smell has to flow out of the probe). • Before using a drenching probe, consult with your veterinarian on its necessity. • Always conform to any national regulations. • Have your veterinarian explain the handling of the probe to you in detail.

NoTe! • Depending on the feed additives used, the sealing rings of the floor-mounted agitator and the pump may be exposed to increased wear. Therefore, the Milk Taxi should be inspected and serviced by your service partner every 6 months.

Selecting the proper drenching solution

• In order to prevent milk fever in the cow after calving, it may be indicated to administer a specific mineral solution (Ca etc.) to her; this should be done within the first 4 hours, better still, the first 2 hours, after calving. • The solution should be prepared lukewarm and in line with the recommendations given by the producer of the used additive. The heater and the agitator of the Milk Taxi can be used in the preparation of the drenching solution.

* optional Milk Taxi outfitting component 42 Drenching with the H&L Milk Taxi

1. Block the cow that needs drenching with the headlock.

2. Carefully insert the drenching probe through the mouth into the gullet of the cow. Then fasten the probe in place by attaching the nostril clip, so the fixture will remain undisturbed in the gullet.  A smell test can be used to ascertain the proper position of the probe in the rumen. If no slightly sour odour escapes through the fixture immediately, blow into the probe with your mouth. A second person listening at the hunger groove will in general be able to recognise the distinctive bubbling inside the rumen.

3. Start pumping the drenching solution.

4. At first, pump only a small amount of liquid (approx. 5 l) from the Milk Taxi to the cow. If she behaves unexpectedly (e.g. chokes), the position of the hose/probe has to be verified.  When all is well, pump the drenching solution into the rumen of the cow.

CaUTIoN !

• Throughout the pumping operation, the cow has to be closely observed at all times. Stop immediately when something unexpected happens.

43 Battery-powered electrical Drive eL-aN*

If your Milk Taxi is equipped with the EL-AN Electrical Drive, you can easily move the Milk Taxi even uphill. This locomotion drive is powering the front axle. As is the case for the dosing pump, with the battery powering the drive you are totally independent of an external power supply.

The drive gear allows forward and reverse movement at two different speeds. When you switch the Milk Taxi on at the On/Off switch, the slower gear is selected automatically. The eL-aN Drive key gives you the possibility to switch easily back and forth between slow and fast gear. The left-hand LED indicates that the slower gear is active, the right-hand LED indicates the faster one.

The steering lever on the right-hand handle is for selecting the direction of movement. When you push this lever to the front (coun- ter-clockwise), the Milk Taxi advances. When you pull this lever to the rear (clockwise), the Milk Taxi reverses.

Infinitely variable speed selection is possible. The speed depends on how far you push the lever to the front or the rear.

The drive axle is motor-braking. This means that the Milk Taxi will stop immediately, even up- and downhill, when the steering lever is not actuated.

The drive features an integrated battery saver. As soon as the battery power level is found to be down to a red indication, the Milk Taxi uses the lower speed automatically to avoid too fast a discharging battery. When the battery is almost discharged, the faster, higher gear can no longer be selected. When this is the case, charge the battery without delay to disable the battery saver and to be able to use both gears again.

WarNINg! Hazard of injury if tank tilts over. • The Milk Taxi is mounted on a travelling panel that allows pushing it manually or electrically assisted to the calf pen to feed milk. The tank may tilt over if the ground is not level, then affecting persons present. This may result in bruises, cuts, and other injuries.

* optional Milk Taxi outfitting component 44 NoTe!

• As long as the Milk Taxi is connected to mains power with the power supply cord, the EL-AN drive is disabled and it is impossible to use it.

If you want to move the Milk Taxi manually, you can disable the motor brake. This is done by removing the plastic cap on the front- side guard of the axle and releasing the brake with the switch that is located behind this cap. Then, to move the Milk Taxi, switch it off at the On/Off switch.

45 Battery Status Indications

With no mains power connection, the battery status is indicated by LEDs and on the display. The LEDs in the left-hand area next to the battery status icons indicate the status of the battery of the EL-AN drive* and those in the right-hand area indicate whether the dosing pump* battery is charged or not.

When the battery is fully charged, the upper, green one of the appropriate two LEDs flashes. If the battery level is low, the appropriate lower, red LED is lit. When the battery is discharged to minimum, an additional information text shows on the display. To avoid the battery’s discharging completely, the pump can no longer be started if from this point the battery discharges any further.

We recommend recharging the battery regularly, once a day. Be sure it is recharged when the red LED lights up. To recharge the battery, connect the Milk Taxi to the power supply as normal and switch it on at the On/Off switch. It may take up to 3 hours for the batteries to get fully charged. During pasteurisation,* the pump, hence the battery, is exposed to more stress than usual. This results in the need to recharge the battery after every pasteurisation cycle.

While the Milk Taxi is connected to mains power, the green battery LEDs are lit or flash. In this situation they indicate that the batteries are being charged rather than that they are fully charged.

* optional Milk Taxi outfitting component 46 With the following battery statuses, your H&L service technician may assess if the batteries still deliver their initial performance.

Battery Status Indicator U2 U1 Battery being charged/charged Green LED flashing 465 970 to maximum Battery fully charged Green LED 430 890 Battery at medium level 416 870 Battery almost discharged Red LED 402 860 Battery discharged to minimum Red LED flashing and info text on screen 391 < 860 Battery completely discharged Red LED flashing and info text on screen,impossible to start pump < 390

47 Cleaning

DaNger! Danger of burns by the cleaning chemicals. • Whenever using chemical cleaning agents, be sure to comply with all safety indications accompanying the product.

CaUTIoN ! Danger of damage to the appliance • When cleaning the tank, keep in mind that the small temperature sensor fitted to the lower portion of the inside wall of it may sustain damage if it is exposed to heavy mechanical strain. This in turn would lead to malfunctions. • Do not use a high-pressure cleaner to clean the Milk Taxi. The water pressure may damage the seals of the appliance, which may then be the cause of consequential damage not covered by the product warranty.

Preparing the Milk Taxi Cleaning

1. Empty the tank of all remaining milk. This can be done by opening the draining tap.

2. Empty also the hose. To do this, you will have to open the check valve of the dispensing arm: pull down the pin inside the dispensing arm outlet and tilt it slightly. While it is in this position, the valve remains open and the remaining milk in the hose flows back through the hose to the tank. When done, close the valve by bringing the pin back to its normal position.

48 Cleaning the Milk Taxi

1. Put hot water (max. 60°C (140°F)) and detergent into the tank. Ensure that the liquid level in the tank is at least 5 cm (2 inch- es) from the floor of the tank (20 - 30 litres / 5¼ - 8 US gal, depending on the Milk Taxi model version).

2. Position the dispensing arm on its funnel-shaped rest and start the pump to recircu- late the detergent solution. The tank itself should be cleaned manually with an appropriate brush.

3. Go on to empty the tank and the hose completely as described above.

4. Use clear water to rinse the detergent solution out of the system. Here too, consider recirculating the water for some time by switching the pump on.

5. After every use, remove the milk filter set into the drain hole (see photograph) and rinse it thoroughly. Failure to do this would likely result in hindered or blocked milk flow.

NoTe! • The Milk Taxi tank has to be properly cleaned. Milk or detergent residues may put your calves’ health at risk. • Solid residues on the floor of the tank have to be eliminated completely. This kind of residues may form ac- cumulated deposits over time and stick to the bottom. Solidified deposits on the floor may mean excessive load on the heater and, in extreme situations, cause its failure.

When you are done cleaning, keep the Milk Taxi in a room that is frost-proof. You should also recharge the Milk Taxi’s battery. To do so, connect its power supply cord to mains power and leave it switched on at the On/Off switch.

49 Disposal

Please dispose of the packaging after sorting it and preparing any material for disposal through the appropriate disposal and recycling circuit. If you decide to discontinue the operation of your Milk Taxi, dispose of it in compliance with applicable laws and rules in force. Please contact your local disposal or collecting agent. Proper disposal and recycling avoids harm to the environment and to health!

NoTe!

• Do not remove the battery. This will be done by the disposal agent or other specialised staff. • Do not dispose of any parts of the Milk Taxi as household waste.

50 Troubleshooting

The tables below list the most common causes of problems. If you are unable to identify the cause of an error on your own based on the tables, please contact the seller of your Milk Taxi or our Customer Service.

Holm & Laue gmbH & Co. Kg Moorweg 6 24784 Westerrönfeld, germany

Phone: +49 (0) 4331 20 174 0 Fax: +49 (0) 4331 20 174 29 e-mail: [email protected]

DaNger! Danger to life and danger of severest burns by damaged power supply cables and equipments as well as improper grounding!

• For the use of optional equipments connected to mains power (pump, battery, charger, heater, or EL-AN drive), proper grounding through the power supply cord has to be ensured. This means that the Milk Taxi has to be connected to the mains power supply with a power socket with protective contact in compliance with all applicable rules. • When a malfunction occurs, unplug the appliance from the power supply immediately. • Work for which the cabinet of the appliance has to be opened has to be carried out by a specialised shop.

51 Malfunction Probable Cause Correction 1. No power supply 1. Plug plugged into mains outlet? Appliance turned on at On/Off switch? No operation, nothing dis- Main circuit breaker fused? played on screen One phase of power supply missing? Power supply cord damaged? 1. Battery discharged 1. Check charger, and switch it on if needed, or replace bat- Display lit, but nothing dis- tery as needed. played 2. Display humid 2. Carefully dry the display screen. 3. Display failed 3. Replace the display and control panel. 1. Pump has drawn air. 1. Bleeding tube plugged. To prime the pump and flood the tube, extend the tube flat on the ground; clear the plug (e.g. by blowing compressed air through the tube from the tank inlet side). Pump does not deliver 2. Liquid level in tank too low 2. Ensure sufficient liquid level. 3. Fuse/circuit breaker tripped 3. Push in the circuit breaker. 4. Battery completely dis- 4. Recharge the battery. charged 5. Pump failed 5. Replace the pump. 1. Check valve not closing 1. Clean check valve and replace it, if needed, when no Pump delivers, but amounts tightly or check valve dirty improvement is achieved. are inconsistent 2. Liquid level in tank too low 2. Ensure sufficient liquid level in the tank. 3. Calibration inaccurate 3. Verify the calibration. Pump running continu- 1. Pump relay failed 1. Replace relay. ously 2. Processor board failed 2. Have processor board replaced by service staff. 1. 9 V battery empty 1. Replace battery (make sure the battery compartment is alternative control on properly sealed again). dispensing arm without 2. Radio channel altered 2. Have radio channel tuned by service staff. function 3. Electronic error 3. Have electronics checked and repaired by service staff.

52 Malfunction Probable Cause Correction 1. Ensure sufficient liquid level in the tank. The tank is empty; the modes 2. If tank is sufficiently full (at least 10 litres (2½ gal)), the “Container empty” shown Heat, Cool, Agitate, and Pasteur- liquid level sensor may be dirty; then clean it. on display ise will not work. 3. If after cleaning the sensor the message does still not disappear, the liquid level sensor may be defective. Despite working display, 1. Power supply cord not con- 1. Plug the cord into a power supply outlet that is properly the modes Heat, Cool, agi- nected installed in compliance with all applicable rules. tate, and Pasteurise will not 2. One power supply phase 2. Check if power supply is properly wired. start. missing Motor of mixing agitator 1. Floor-mounted agitator failed 1. Replace floor-mounted agitator. fails to run 2. Agitator relay failed 2. Replace agitator relay. 1. Hose connection(s) not tight 1. Open the inspection lid and visually check all hose connec- Milk leaking from the Milk 2. Floor-mounted agitator leak- tions for proper fit. Taxi ing 2. Have repaired by service staff. 1. Battery completely dis- 1. Replace the battery. Programme restarts again charged and again after a key was 2. Battery charger switched off 2. Switch charger on or replace it. pressed or failed 1. Battery completely dis- 1. Replace the battery. charged Battery discharges too fast 2. Battery charger switched off 2. Switch charger on or replace it. or failed 1. Not connected to power sup- 1. Check power supply and connection plugs/sockets. ply Battery charger without 2. Milk Taxi not switched on 2. Switch Milk Taxi on. function 3. Charger failed (one power 3. Replace charger. supply phase and neutral reverted in power supply)

53 Malfunction Probable Cause Correction While charging the batter- Battery not being charged due to Replace charger. ies, no green LeDs lit failed charger Heating performance too 1. One phase missing 1. Check power supply for proper wiring. low 2. Heating element failed 2. Replace the heating element. 1. Heating relay failed 1. Replace the relay. No heating 2. Heating element failed 2. Replace the heating element. No water supply (not connected Check water supply. No positive cooling or tap not open) As an anti-freeze protection No error! Place the Milk Taxi with double wall on a suitable Water flowing from below of the cooling jacket, water is surface with water drain. the Milk Taxi (with double- always drained from in-between wall pasteuriser) the walls after pasteurisation) Constant water flow in Connections to water inlet and Check water supply connections. cooler coil outlet inverted Milk Taxi cools but does not Cold water temperature ex- Check the cold water supply temperature and/or change reach set cooled tempera- ceeds set cooled temperature cooled temperature setting. ture 1. No mixing agitator action 1. Replace the mixing agitator on the floor of the tank. after pasteurisation, posi- (agitator failed) tive milk cooling very slow 2. Mixing agitator relay failed 2. Replace agitator relay. 1. Power supply cord connect- 1. Disconnect the appliance from mains power and switch ed it on at the On/Off switch. eL-aN drive does not move 2. Battery discharged 2. Charge the battery, check the battery charger and replace the appliance as needed. 3. Motor-braking function active 3. Disable/release the motor-braking function. Release the motor brake at the drive axle; moving the Milk Taxi eL-aN electrical drive failure manually still is only possible if it is switched off at the On/Off switch.

54 application for Warranty

Pursuant to our General Terms and Conditions, the warranty term is 12 months. If defects appear in the course of the warranty term, return the item in question to Holm & Laue, attaching the Warranty Report below. Wear and tear parts (e. g., hoses and seals, but also batteries and tyres) and damage resulting from improper handling are not eligible for warranty claims. Repairs of defects that are not eligible for warranty can be performed by Holm & Laue upon order. If you desire to have them taken care of, please check the appropriate box on the Warranty Report.

H&L Milk Taxi, 80l H&L Milk Taxi, 120l H&L Milk Taxi, 200l H&L Milk Ttaxi, 250l

(please check the appopriate box)

Serial Number: (of the unit for which a warranty claim is raised)

Number and Date of Invoice to Customer: Date: (copy of invoice attached)

Item Number of the Part in the Shipment: (in case of several sent items, number them)

Designation of Repair Part:

Part Number of Repair Part:

55 Description of Error:

Customer’s order Please check the warranty claim submitted above: If the claim is eligible for warranty and there is no possible correction as provided for by Holm & Laue’s Terms & Conditions, please:- Applicant: Perform a replacement delivery

Make a credit Address:

Return the sent repair part

(please check the appopriate box)

If the claim is not eligible for warranty: Phone: Please return the unrepaired repair part, invoicing transport cost E-Mail:

Please repair the part and invoice the cost Date/Signature: (please check the appopriate box) 56 Notes

57 This product is brought you by:

58 Tel.: +49 (0) 4331 20174-0 Fax: +49 (0) 4331 20174-29 www.holm-laue.de

06:35 29°C 40°C Dosing Qty: 1,6 l

Pump Plus and Cool Function key eL-aN key Battery Status Minus keys Indicators Heat Pasteurise agitate Holm & Laue GmbH & Co. KG Moorweg 6 24784 Westerrönfeld, Germany

Phone: +49 (0) 43 31 20 174 0 Fax: +49 (0) 43 31 20 174 29 E-mail: [email protected] Internet: www.holm-laue.de