Pneg-341 1200 & 1200S Series Two Fan Portable Dryer Models

Home , 1200s (decade)

A I R S T R E A M G R A I N C O N D I T I O N I N G S Y S T E M S

1 9 9 7 D RYER OPERATION A N D S E R V I C E M A N U A L

PNEG-341 1200 & 1200S SERIES TWO FAN PORTABLE DRYER MODELS

1 2 1200 & 1200S SERIES DRYER OPERATION AND SERVICE

TABLE OF CONTENTS Warranty...... 4

Safety First...... 5

Safety Alert Decals...... 6 Safety Precautions...... 7

Dryer Control Panel Featuring The Electronic Monitoring Control...... 8

Safety Circuit Shutdown Messages...... 13 Dryer Pre Start Checks...... 14

Pre Season Inspection...... 14

Dryer Start Up & Operation...... 18 Continuous Flow And Continuous Batch Start Up Procedures...... 18

1200 Series Continuous Flow Metering Roll Settings-Full Heat...... 19

1200 Series Continuous Flow Metering Roll Settings-Dry & Cool...... 20 1200S Series Continuous Flow Metering Roll Settings-Full Heat...... 21

1200S Series Continuous Flow Metering Roll Settings-Dry & Cool...... 22

Fan & Heater Switch Settings...... 24 1200 Series Batch Timer Settings...... 25

1200 Series Staged Auto Batch Timer Settings...... 26

1200S Series Batch Timer Settings...... 27 1200S Series Staged Auto Batch Timer Settings...... 28

1200 & 1200S Series Dryer Service Guide...... 29

Seasonal Inspection And Service...... 30 Suggested Lubricants...... 31

Fan Propellor Removal And Installation...... 32

Fan Motor Removal And Installation...... 33 Heater Parts Removal And Installation...... 34

Metering Roll Servicing...... 35

How To Determine A Metering Roll Problem...... 36 1200 & 1200S Series Wiring Diagrams...... 37

Trouble Analysis Procedure...... 48

Quick Reference Guide...... 53 Notes...... 54

3 WARRANTY

THE GSI GROUP, INC. ("GSI") WARRANTS ALL PRODUCTS MANUFACTURED BY GSI TO BE FREE OF DEFECTS IN MATERIAL AND WORKMANSHIP UNDER NORMAL USAGE AND CONDITIONS FOR A PE- RIOD OF TWENTY-FOUR MONTHS AFTER RETAIL SALE TO THE ORIGINAL END USER OF SUCH PROD- UCTS. GSI'S ONLY OBLIGATION IS, AND PURCHASER'S SOLE REMEDY SHALL BE FOR GSI, TO RE- PAIR OR REPLACE, AT GSI'S OPTION AND EXPENSE, PRODUCTS THAT, IN GSI'S SOLE JUDGMENT, CONTAIN A MATERIAL DEFECT DUE TO MATERIALS OR WORKMANSHIP. ALL DELIVERY AND SHIP- MENT CHARGES TO AND FROM GSI'S FACTORY WILL BE PURCHASER'S RESPONSIBILITY. EXPENSES INCURRED BY OR ON BEHALF OF THE PURCHASER WITHOUT PRIOR WRITTEN AUTHORIZATION FROM AN AUTHORIZED EMPLOYEE OF GSI SHALL BE THE SOLE RESPONSIBILITY OF THE PURCHASER.

EXCEPT FOR THE ABOVE STATED EXPRESS LIMITED WARRANTIES, GSI MAKES NO WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES OF MER- CHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE IN CONNECTION WITH (i) PROD- UCT MANUFACTURED OR SOLD BY GSI OR (ii) ANY ADVICE, INSTRUCTION, RECOMMENDATION O R SUGGESTION PROVIDED BY AN AGENT, REPRESENTATIVE OR EMPLOYEE OF GSI REGARDING OR RELATED TO THE CONFIGURATION, INSTALLATION, LAYOUT, SUITABILITY FOR A PARTICULAR PUR- POSE, OR DESIGN OF SUCH PRODUCT OR PRODUCTS.

IN NO EVENT SHALL GSI BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL OR CONSEQUEN- TIAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOSS OF ANTICIPATED PROFITS OR BENEFITS. PURCHASER'S SOLE AND EXCLUSIVE REMEDY SHALL BE LIMITED TO THAT STATED ABOVE, WHICH SHALL NOT EXCEED THE AMOUNT PAID FOR THE PRODUCT PURCHASED. THIS WARRANTY IS NOT TRANSFERABLE AND APPLIES ONLY TO THE ORIGINAL PURCHASER. GSI SHALL HAVE NO OBLIGA- TION OR RESPONSIBILITY FOR ANY REPRESENTATIVE OR WARRANTIES MADE BY OR ON BEHALF OF ANY DEALER, AGENT OR DISTRIBUTOR OF GSI.

GSI ASSUMES NO RESPONSIBILITY FOR FIELD MODIFICATIONS OR ERECTION DEFECTS WHICH CREATE STRUCTURAL OR STORAGE QUALITY PROBLEMS. MODIFICATIONS TO THE PRODUCT NOT SPECIFICALLY COVERED BY THE CONTENTS OF THIS MANUAL WILL NULLIFY ANY PRODUCT WAR- RANTY THAT MIGHT HAVE BEEN OTHERWISE AVAILABLE.

THE FOREGOING WARRANTY SHALL NOT COVER PRODUCTS OR PARTS WHICH HAVE BEEN DAMAGED BY NEGLIGENT USE, MISUSE, ALTERATION OR ACCIDENT. THIS WARRANTY COVERS ONLY PRODUCTS MANUFACTURED BY GSI. THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED. GSI RESERVES THE RIGHT TO MAKE DESIGN OR SPECI- FICATION CHANGES AT ANY TIME.

PRIOR TO INSTALLATION, PURCHASER HAS THE RESPONSIBILITY TO RESEARCH AND COM- PLY WITH ALL FEDERAL, STATE AND LOCAL CODES WHICH MAY APPLY TO THE LOCATION AND INSTALLATION.

4 ROOF WARNING, OPERATION & SAFETY

ROOF DAMAGE WARNING AND DISCLAIMER

GSI DOES NOT WARRANT ANY ROOF DAMAGE CAUSED BY EXCESSIVE VACUUM OR INTERNAL PRESSURE FROM FANS OR OTHER AIR MOVING SYSTEMS. ADEQUATE VENTILATION AND/OR "MAKEUP AIR" DEVICES SHOULD BE PROVIDED FOR ALL POWERED AIR HANDLING SYS- TEMS. GSI DOES NOT RECOMMEND THE USE OF DOWN- WARD FLOW SYSTEMS (SUCTION). SEVERE ROOF DAM- AGE CAN RESULT FROM ANY BLOCKAGE OF AIR PAS- SAGES. RUNNING FANS DURING HIGH HUMIDITY/COLD WEATHER CONDITIONS CAN CAUSE AIR EXHAUST OR INTAKE PORTS TO FREEZE.

DRYER OPERATION Thank you for choosing a GSI/ volt, or three phase 220 or 440 As owner and/or operator, it is Airstream product. It is designed volt electrical power. your responsibility to know what to give excellent performance The principal concern of the GSI requirements, hazards and pre- and service for many years. Group, Inc. ("GSI") is your safety and cautions exist, and to inform all This manual describes the the safety of others associated with personnel associated with the operation and service for all stan- grain handling equipment. This equipment, or who are in the dryer dard 1200 Series two fan grain manual is written to help you under- area. Avoid any alterations to the dryers. These models are avail- stand safe operating procedures, equipment. Such alterations may able for liquid propane or natu- and some of the problems that may produce a very dangerous situa- ral gas fuel supply, with either be encountered by the operator or tion, where serious injury or death single phase 230 other personnel. may occur.

SAFETY ALERT SYMBOL The symbol shown is used to call your attention to instructions con- WARNING! BE ALERT! cerning your personal safety. Watch Personnel operating or working around for this symbol; it points out impor- electric fans should read this manual. tant safety precautions. It means This manual must be delivered with the "ATTENTION", "WARNING", "CAU- equipment to its owner. Failure to read TION", and "DANGER". Read the this manual and its safety instructions is message and be cautious to the a misuse of the equipment. possibility of personal injury or death. 5 SAFETY ALERT DECALS

Three decals displayed on all Airstream Dryers. Belt drives, chain driven meter rolls and combustible fuels must be treated with caution.

6 SAFETY PRECAUTIONS

1. Read and understand the operating manual before trying to operate the USE CAUTION dryer. IN THE OPERATION OF THIS EQUIPMENT 2. Never operate the dryer while the guards are removed. The design and manufacture of this dryer is directed toward operator 3. Power supply should be OFF for service of electrical components. Use CAUTION in checking voltage or other procedures requiring power safety. However, the very nature of to be ON. a grain dryer having a gas burner, high voltage electrical equipment 4. Check for gas leaks at all gas pipe connections. If any leaks are and high speed rotating parts, does detected, do not operate dryer. Shut down and repair before fur- present a hazard to personnel which ther operation. can not be completely safeguarded against, without interfering with effi- 5. Never attempt to operate the dryer by jumping or otherwise bypassing cient operation and reasonable ac- any safety devices on the unit. cess to components. Use extreme caution in working 6. Set pressure regulator to avoid excessive gas pressure applied to burner around high speed fans, gas fired during ignition and when burner is in operation. See chart for operat- heaters, augers and auxiliary con- ing proce dures. Do not exceed maxi mum recommended drying tem- veyors, which may start without perature. warning when the dryer is operating on automatic control. 7. Keep the dryer clean. Do not allow fine material to accumulate in the plenum chamber. Also occasionally clean the outside screens of the dryer. KEEP THE DRYER CLEAN 8. Keep auger drive belts tight enough to prevent slippage. DO NOT ALLOW FINE MATERIAL TO ACCUMULATE 9. Use CAUTION in working around high speed fans, gas burners, augers and auxiliary conveyors which START AUTOMATICALLY. IN THE PLENUM CHAMBER OR SURROUNDING THE 10. Do not operate in any area where combustible material will be drawn into OUTSIDE OF THE DRYER the fan.

Continued safe, dependable opera- 11. Before attempting to remove and reinstall any propeller, make certain to read the recommended procedure listed within the servicing section of tion of automatic equipment de- the manual. pends, to a great degree, upon the owner. For a safe and dependable 12. Be certain that capacities of auxiliary conveyors are matched to dryer drying system, follow the recom- auger capacities. mendations within this manual, and make it a practice to regularly in- 13. Clean grain is easier to dry. Fine material increases resistance to airflow spect the operation of the unit for any and requires removal of extra moisture. developing problems or unsafe con- READ THESE INSTRUCTIONS ditions. BEFORE OPERATION AND SERVICE Take special note of the safety precautions listed above before at- SAVE FOR FUTURE REFERENCE tempting to operate the dryer. 7 DRYER CONTROL PANEL

Figure 1: The grain dryer control panel with the Electronic Monitoring Control System in the upper right panel.

DRYER CONTROL PANEL FEATURING THE ELECTRONIC MONITORING CONTROL SYSTEM

The control panel provides easy access information regarding dryer operation. MOISTURE CONTROL to gauges and controls, and the illumi- MOISTURE CONTROL SWITCH nated switches provide a quick reference THERMOSTAT This switch turns the power on or for every operating function. The patent This electronic thermostat controls off to the moisture control thermo- pending Electronic Monitoring Con- the moisture level of discharged stat. It lights up when the grain col- trol System is a computerized con- grain by sensing grain column tem- umn temperature is below the ther- trol sys tem that gives instant perature. mostat set point. 8 DRYER CONTROL PANEL

CONTROL POWER FAN SWITCHES ture control switch is on, and the dry SWITCH Each fan is turned on or off with ing mode switch is turned to cont. The power to the Electronic Moni- this switch. The on position oper- flow, the metering roll speed will op- toring Control System is turned on ates the fan continuously during erate at the high speed metering roll or off with this switch. staged batch and continuous flow potentiometer setting or turn off de- modes. The auto position operates pending on the control signal from OUTSIDE LIGHT the fan in staged batch during the the mois ture control thermostat. The The dryer service light is turned on dry and cool cycle. The switch will discharge auger will operate when or off here. It also may be set on light up whenever the airflow ever the metering rolls are operating. auto, which turns the light on while switch is sensing airflow and the the dryer is running and off if a dryer is full of grain. • In both the 1 speed or the 2 speed shutdown occurs. position, if the moisture control switch is off, and the drying mode HEATER SWITCHES switch is turned to cont. flow, the DRYING MODE SWITCH Each burner is turned on or off with metering roll speed can be manu- This is used to select staged batch this switch. The auto position op- ally controlled by adjusting the or continuous flow drying. The erates the burner in staged batch high speed metering roll potenti- switch will light only after the Elec- during the dry cycle. The on posi- ometer. The discharge auger will tronic Monitoring Control System tion will operate the burner only operate continuously. has been turned on, the safety cir- when the fan is running. The cuit is okay and the reset button switch will light up only when the • If the drying mode switch is turned on the control panel has been flame sensor detects the flame. to staged batch, the unload switch pressed. should be set to the 1 speed posi- UNLOAD SWITCH tion. The discharge auger and LOAD AUGER SWITCH The unload switch turns the meter- metering rolls will only operate This is used to select the opera- ing rolls and discharge auger on or during the unload cycle of the tion of the fill auger. In both the off, and selects the operation of the staged batch operation, and the auto and manual position the load metering rolls. speed of the metering rolls is ad- auger will operate if the dryer is low justed using the high speed me- on grain and will automatically shut •In the 2 speed position if the moisture tering roll potentiometer. off when the dryer is full. In the auto control switch is on, and the drying (Note: If the unload auxiliary position only, the dryer will shut mode switch is turned to cont. flow, motor overload relay is being uti- down after a preset period of time the metering roll speed will alternate lized in the dryer control panel, this set on the out of grain timer, or if between the high speed metering roll switch will also control the opera- grain flow is interrupted to the potentiometer setting and the low tion of the auxiliary equipment.) dryer. The switch will light when- speed metering roll potentiometer set- ever the load auger is operating. ting depending o n the control signal LOW SPEED METERING (Note: If the load auxiliary mo- from the moisture control thermo- ROLL POTENTIOMETER tor overload relay is being utilized stat. The discharge auger will oper- This is used to adjust the low speed in the dryer control panel, this ate continuously. of the metering roll when the 2 speed switch will also control the opera- automatic moisture control feature tion of the auxiliary equipment). •In the 1 speed position, if the mois- of the dryer is in use.

9 DRYER CONTROL PANEL

HIGH SPEED METERING when the moisture control is not used. flow, pressing the dryer power start ROLL POTENTIOMETER • Set the rate of grain discharge from button and then turning on the de- This is used to: the dryer during the unload cycle of sired dryer component. • Set the high speed of the metering roll staged batch dryer operation. when the two speed automatic mois- DRYER POWER ture control feature of the dryer is uti- DRYER POWER STOP SWITCH lized. START SWITCH This switch stops all dryer func- • Set the speed of the metering rolls This switch starts and operates the tions. If an automatic dryer shut- when the one speed automatic mois- dryer based on switch settings. If down occurs, first determine and ture control feature of the dryer is uti- other switch settings are in the off correct the cause of the shutdown. lized. position, individual dryer compo- Then, press the dryer power stop • Set the speed of the metering rolls nents can be operated by turning the button to reset the dryer before during continuous flow operation drying mode switch to continuous restarting.

An Airstream Dryer Control Panel (four fan model) mounted on the dryer.

10 DRYER CONTROL PANEL

ELECTRONIC SETTING THE DRY, COOL, if the dryer is stopped, these times MONITORING CONTROL BATCH AND UNLOAD are saved by the controller. When SYSTEM TIMERS the dryer is restarted the timers will The Electronic Monitoring Control These switches are used to set the cycle continue timing down. The timers System (Figure 2) controls all tim- times in the staged batch drying mode will return to their initial setting if ing functions and safety circuit only. The drying mode switch must be the reset button is pushed. checks. It is designed to simplify in the staged batch position. The cur- dryer operation by providing printed rent setting on these three timers is dis- SETTING THE OUT OF messages and warnings on its liq- played directly above each timer button. GRAIN TIMER uid crystal display (LCD). To change the setting of these timers If the dryer runs out of grain while the follow these instructions: load auger switch is in the auto posi- TURNING ON THE ELECTRONIC 1. Press the dry, cool or unload tion, the out of grain timer automatically MONITORING CONTROL timer button. shuts off the dryer after the period of time SYSTEM 2. Press the modify button. preset on the timer. When pressed, the Turn the control power switch to on. 3. Press the increase or decrease display will show the amount of time left The monitor will display a copyright button to adjust the settings. on the timer and the percentage of time message and model number, total 4. Press the enter button. used by the last load. A second screen running time in hours and minutes and During operation the remaining will appear with the timer's setting, and the current time and date. To activate time on each timer is displayed on may be modified as described in the the controller press the reset button. the screen. If the power goes out or batch timer section.

Figure 2: The Airstream Electronic Monitoring Control System 11 DRYER CONTROL PANEL

The Airstream Electronic Monitoring Control System showing several different LCD displays.

SETTING THE LOAD AND bushels dried on the third line. By DRYER SAFETY CIRCUIT UNLOAD DELAYS pressing the bph/rpm/total bu but- The Electronic Monitoring Control The load delay is used to delay the ton the second line will alternate System continuously checks all starting of the load auger when the between the metering roll rpm's or safety circuits on the dryer, and will dryer is unloading to prevent the load the bushel per hour rate. The to- automatically shut the dryer down auger from starting and stopping. tal bushels dried reading is the to- should a problem occur. The cause The unload delay is used to control tal since the bushel counter was of the dryer shutdown will be dis- the amount of time the unload au- last reset. To reset the bushel played on the LCD display, and a ger runs after the metering rolls stop counter, press and hold the reset beeper will sound on the controller. to allow for auger cleanout. Both the button for five seconds. Press the To restart the dryer after a safety load and unload delays are set us- enter button through the date and shutdown, first correct the reason for ing the same procedure as the tim- time settings, and follow the in- the shutdown, and then press the ers. The aux 1 and aux 2 delays are structions displayed on the LCD for dryer power stop button to reset the presently not being used. resetting the counter. circuit. Press the start button. In the batch mode, the first line The Electronic Monitoring Control UTILIZING THE of the LCD display tells which timer System stores in its memory the time, BUSHEL COUNTER is being used, and the second line date and cause for the last 25 dryer When operating the dryer the LCD switches between total batches, safety shutdowns. To review this in- display will show the dryer mode of unload rpm or total bushels. The formation, hold the reset button in for operation on the first line, the bush- third line indicates total dry time, five seconds. The procedure for re- els per hour or the metering roll rpm and the fourth line is time remain- viewing the safety circuit shutdown log on the second line and the total ing on the timers. will be displayed on the LCD display.

12 DRYER CONTROL PANEL

SAFETY CIRCUIT SHUTDOWN MESSAGES BURNER 1 OR 2 VAPOR LOWER ADJUSTABLE METERING ROLL DRIVE HIGH TEMPERATURE GRAIN HIGH SYSTEM FAILURE The LP gas vapor temperature sensor TEMPERATURE The metering roll drive system has located in the gas pipe train downstream An over temperature condition has oc- failed to turn. A broken chain or from the vaporizer, has opened indicat- curred in the right side (left and right jammed metering roll is a possibility. ing that the vaporizor is running too hot as viewed from behind the dryer) grain column causing the control to shut RIGHT METERING ROLL and must be readjusted. This sensor is FAILURE set at 200 °F and automatically resets down the dryer. This control is adjust- ° ° The right (as viewed from behind the itself when cool. The message will dis- able from 80 to 220 F, and automati- dryer) metering roll has stopped turn- tinguish between burner 1 and 2. cally resets itself when cool. ing, or the sensor has been damaged. BURNER 1 OR 2 WARNING LOWER FIXED GRAIN FLAME NOT DETECTED HIGH TEMPERATURE LEFT METERING ROLL The flame sensor has failed to de- An over temperature condition has oc- FAILURE tect a burner flame indicating that the curred in the left side (left and right as The left (as viewed from behind the burner has failed to light, there is a viewed from behind the dryer) grain col- dryer) metering roll has stopped turn- problem with the flame sensing cir- umn causing the control to shutdown the ing, or the sensor has been damaged. dryer. This control is set at 210 °F and cuitry or the dryer is not getting PLENUM 1 OR 2 HIGH automatically resets itself when cool. burner fuel. The message will dis- TEMPERATURE tinguish between burner 1 and 2. MOTOR OVERLOAD An over temperature condition has FAN 1 OR 2 HOUSING One of the thermal overloads on ei- occurred inside the dryer plenum. HIGH TEMPERATURE ther the fan, load, unload or auxil- This control is a 300 °F limit and au- The temperature high limit located iary motors has opened, indicating tomatically resets itself when cool. on the fan/burner housing has an overcurrent condition. The over- The message will distinguish be- opened, indicating an over tempera- loads must be manually reset. tween plenum 1 and 2. ture condition has occurred towards OUT OF GRAIN WARNING/ AUXILIARY SAFETY the rear of the fan/heater housing. UNLOAD CLEANOUT SHUTDOWN This control is set at 200 °F and must The dryer has run low on grain, and A shutdown has occurred due to an be manually reset. The message will the out of grain timer has timed out, auxiliary installed safety feature. distinguish between fan 1 and 2. shutting the dryer down. The unload FAN 1 OR 2 FAILURE BURNER 1 OR 2 SHUT- auger will clean out the dryer if it is NO AIRFLOW DOWN LOSS OF AIRFLOW in continuous flow operation. Contacts in the air switch have opened The contacts in the air switch have 12 VOLT POWER due to the fan not turning, or the air switch opened due to insufficient airflow for the SUPPLY WARNING may need adjustment. The message will burner to operate. The message will dis- The right circuit breaker on the input/ distinguish between fan 1 and 2. tinguish between burner 1 and 2. output board has tripped. FAN 1 OR 2 CANNOT GRAIN DISCHARGE L1 VOLTAGE LOST START CHECK AIR SWITCH WARNING The left circuit breaker located on The air switch contacts have closed The lid on the grain discharge box the input/output board of the Elec- prior to the fan starting, indicating a has opened, indicating that grain is tronic Monitoring Control System freewheeling blade or improper set- not being taken away fast enough has tripped, or one of the hardware ting of the air switch. The message at the discharge box. timers has shut down the dryer. will distinguish between fan 1 and 2. 13 DRYER PRE START CHECKS

PRE SEASON INSPECTION

Before the dryer is filled, thoroughly inspect the unit and check the operation of the dryer as follows.

INSPECT THE METERING ROLLS Open all metering roll access doors and inspect each compartment for any bolts, nuts or other foreign material, that may cause possible jam- ming of the metering rolls.

BEFORE ATTEMPTING TO OPERATE THE DRYER MAKE

SURE ALL SAFETY SHIELDS The Maxon safety shut off valve. ARE IN PLACE, ALL BOTTOM CLEANOUT AND REAR ELECTRICAL POWER POWER START BUTTON ACCESS DOORS ARE CLOSED Turn on the electrical power supply Push the dryer start button, and all to the dryer; set all circuit breakers the selector switches on the control AND ALL PERSONNEL ARE to on, including the safety discon- panel will be activated. CLEAR OF THE DRYER nect handle mounted on front of the dryer power panel. FUEL CHECK SET CONTROL SWITCHES CONTROL POWER If using LP gas, make sure the tank Moisture Control Switch-ON SWITCH has plenty of fuel and that the tank Moisture Control Thermostat-MAXI- Turn the control power switch to on. does not have a regulator mounted MUM TEMPERATURE The switch will light up. A copyright to it. If using natural gas, make sure Load Switch-OFF message, model number, total run- an adequate supply is available. Unload Switch-OFF ning time in hours and minutes, cur- If using LP gas, slowly open the Fan Switches-OFF rent date and time will appear. At this main fuel supply valve at the tank. Burner Switches-OFF point the controller will lock out all If using natural gas, turn on the valve Out of Grain Timer-8 MINUTE other dryer functions. Once the date along the supply line. Then, open the Load Delay-30 SECONDS and time appear, press reset and the electronic shut off valve (Maxon Unload Delay-30 SECONDS dryer will perform its safety circuit valve), if so equipped, or open the Metering Roll Speed-LOW AND check. If a fault is found, the cause manual shut off valve on the dryer HIGH SPEED SETTINGS PUT will be displayed on the LCD. If all to allow fuel flow to the dryer. In- ON ZERO are found safe, the controller will sup- spect all gas lines and connections Dry Timer-60 MINUTE ply power to the electronic fuel shut- for possible leaks. Cool timer-20 MINUTE off valve, if so equipped, and the dry- Unload timer-10 SECONDS ing mode switch will light up, indicat- Any gas leaks must be fixed Mode Switch-CONTINUOUS FLOW ing that the dryer is ready to be started. immediately! 14 DRYER PRE START CHECKS

iary is wired to the dryer, it should start and rotate in the proper direction.

MOISTURE CONTROL THERMOSTAT To check the moisture control thermostat leave the unloading switch on one speed, and slowly turn down the moisture control thermostat. As the setting is decreased, the indica- tor light should come on and the metering rolls should stop operating. The bottom auger will stop after the 30 second clean out delay, providing that the dryer is still being held by the moisture control thermostat. Rotate the moisture control thermostat up to its maximum setting. The light should go off, and the metering rolls should restart along with the bottom auger if it has stopped.

TWO SPEED OPERATION To check two speed operation move The metering roll access area. the switch to the two speed position, set low speed on 200 and high LOAD AUGER played. Press the dryer power stop speed on 600. Slowly turn the ther- With the grain supply shut off, button to reset the panel, then press mostat until the moisture control quickly bump the load auger switch the start button. switch light comes on. The meter- to manual, and see if the load auger ing roll speed is now controlled by rotates clockwise as viewed from the ONE SPEED OPERATION the low speed dial. Turning the ther- drive end, or counterclockwise if the To check one speed operation mostat the other way until the light dryer is a front load model. If the wet place the unload switch in the one goes out leaves the metering rolls con- grain supply auxiliary is wired to the speed setting. Turn up the high trolled by the high speed dial. dryer it should also rotate in the cor- speed metering roll dial until the rect direction at this time. Turn the metering rolls start rotating. The METERING ROLL load auger switch to the auto posi- bottom auger should rotate coun- OPERATION tion. The top auger and wet grain terclockwise as viewed from the To check the metering roll operation supply auxiliary should run for one drive end. The metering roll drive turn either the low speed or high speed minute, and then the dryer will shut- motor should rotate clockwise as knob clockwise, and the metering roll down leaving the safety shutdown viewed from the drive end of the gear speed should increase. Turning ei- message (out of grain warning) dis- box. If the dry grain take away auxil- ther knob counterclockwise will de-

15 DRYER PRE START CHECKS crease the speed. Make sure the purge delay of approximately 10 fire pressure settings. Use the drive chain tension is properly ad- seconds. Gas pressure should be pressure regulator for hi-fire and justed and all sections of the meter- shown on the gauge. At this time the ball valve for lo-fire. The ther- ing rolls rotate. Turn the unload switch adjust the burner hi-lo fire thermo- mostat should cycle between high off after these checks are complete. stat to 200 °F, causing the burner to and low, approximately 4 to 5 times The bottom auger will continue to run operate on hi-fire. This thermostat per minute. for 30 seconds after the switch is is located on the front left side of the Approximate settings should be: turned off to allow for cleanout. dryer. Observe the gas pressure on L P G a s Hi-Fire 6-15 lbs. gauge, and turn the thermostat to its Lo-Fire 2-6 lbs. FAN SWITCHES minimum setting, causing the burner Natural Gas Hi-Fire 6-10 lbs. Bump each fan switch and observe to cycle into lo-fire. As the burner Lo-Fire 1-3 lbs. the fan rotation. The fan should run thermostat is turned down the gas If the burner remains on hi-fire counterclockwise. Sometimes on pressure should also show a notice- and does not cycle, increase the three phase models all motors will able drop, indicating that the hi-fire regulator setting on the propane run backwards. They can easily be solenoid is closed and the burner is models, or the supply valve on the reversed by interchanging two of the being supplied with less gas natural gas models in order to reach three power supply wires. Reverse through the low fire control valve. the thermostat setting. If the burner the two outside wires, L1 and L3, At this time set the hi-fire and lo- remains in lo-fire and does not cycle, and leave the middle one in the same position. Note: If the dryer is empty, the fans or burners will not operate. The fans cannot create enough static pressure to engage the air switch. You will receive a loss of airflow 7 message. 5 BURNER SAFETY 9 3 To check the burner safety function, first make sure the main gas valve is off. Turn the fan switch on and allow the fan to start. Then, turn the heater switch on for that fan. The dryer will shut down after 20 seconds. The safety message, 8 4 2 1 "Burner 1 warning flame not detected" will appear. Restart dryer and repeat for 6 the second fan/heater.

BURNER TEST FIRE Test fire each burner by starting the fan. Then, turn the burner switch to The dryer fan and heater controls featuring: 1-pressure regulator, 2-lo-fire on. Turn on the fuel supply, and the control valve, 3-high pressure solenoid, 4-low pressure solenoid, 5-hi-lo fire thermostat, 6-fuel supply line, 7-LP solenoid or supply ball valve(NG), burner should ignite after a short 8-air pressure switch and 9-liquid filled gauge.

16 DRYER PRE START CHECKS

All dryer functions should be checked before operation each season. slightly decease gas pressure with Turn on the electric shut off valve to DRYER SHUTDOWN the lo-fire control valve. If the gas allow fuel flow to the dryer, if so To shut down the dryer, first close pressure is decreased too much a equipped. Turn the load switch to the fuel supply valve at the tank or popping or fluttering sound will be auto and unload switch to one valve along the fuel line. If the heard. Also, anytime the high pres- speed. Push the dryer power start burner is operating, let the dryer sure side is adjusted, the low pres- button, and the controller will se- run out of fuel, and it will shut down sure side needs to be checked. Re- quentially start all dryer components automatically due to loss of flame. peat the test for each fan/heater unit. in their proper order. If any switches Close the fuel valve at the dryer, are not in their correct position for and press the dryer power stop STAGED BATCH CHECK staged batch operation, the dryer will button. Turn off the safety discon- To check the staged batch opera- indicate improper switch position, nect handle on the front of the tion, turn the control power switch and will not start until the switches power box, and turn off the main to the on position. Turn the drying are in the proper position. After start- power to the dryer. mode switch to the staged batch posi- ing, all batch timers will time down tion. Press the reset button, open in sequence. When the unload cycle EMERGENCY the main fuel supply valve at the tank is complete the timers will automati- In case of emergency push the dryer on an LP dryer, or valve in the fuel cally reset to their original settings, power stop button. The fan, burner supply line on a natural gas dryer. and start the dry timer again. and all augers will stop immediately. 17 DRYER START UP & OPERATION

CONTINUOUS FLOW AND CONTINUOUS BATCH START UP PROCEDURE

At the beginning of each harvest and controller will allow the electronic 6. The dryer should already be before filling the dryer with grain fuel shutoff valve to be manu- filled with grain. Turn the load make sure to inspect the dryer for ally opened, if so equipped, auger switch to the auto posi- rodent damage, proper belt and and the drying mode switch will tion. In both the auto and manual chain tension and missing or dam- light up, indi cating that the dryer positions, the dryer grain level aged safety shields. Test operate is ready to be started. switch will automatically keep the dryer using the pre start check the dryer full of grain. In the auto procedures located on pages 14-17. 5. Move the load auger switch to position the dryer will shut down manual, and push the dryer after a preset time period on the 1. Before attempting to operate the power start switch. The top au- out of grain timer. dryer make sure that all safety ger will immediately start, and shields are in place, all plenum the load auger switch will light 7. Turn each fan switch to on. The bottom closure panel doors are up. If additional loading equip- fan will start, and the switch will closed, all rear access doors are ment is wired to the dryer it will light up when airflow is detected. closed and all personnel are also start immediately. clear of the grain dryer and grain 8. Start each burner by turning the handling machinery. 6. When the dryer is full of grain the heater switch to on. After purg- top auger will stop automatically, ing for approximately 10 sec- 2. Turn all selector switches on the and any auxiliary loading equipment onds the burner will fire, and the control panel to the off position. wired to the dryer will also stop. heater switch will light up. This indicates that the flame sensing 3. Turn on the electrical power sup- CONTINUOUS FLOW circuit is sensing burner flame. For ply to the dryer, and move the OPERATION information concerning burner safety disconnect handle mounted 1. Turn the control power switch to on. adjustment see the pre start on the dryer's upper power box section of this manual. to on. 2. After the date and time appear on screen, press the reset button. 9. Operate the heaters to dry grain for 4. Turn the control power switch to 6-7 minutes per point of moisture on. The switch will light up. A 3. Push the dryer power start switch. to be removed with the plenum tem- copyright message, model num- perature set at 180 °F. Example: ber, total running time in hours 4. Open the main fuel supply valve Shelled corn starts with 25% mois- and minutes, current date and on the tank if using LP gas, or ture and the final moisture content time will appear. At this point the open the fuel supply line if us- is to be 15% (10% removal). Us- controller will lock out all other ing natural gas. Turn on the ing the all heat dryeration process, dryer functions. Once the date Maxon electric shut off valve, the estimated drying time is 60 min- and time appear, press reset, if so equipped, or open the manual utes (10 x 6). and the dryer will perform its shut off valve to allow fuel flow to safety circuit checks. If a fault the dryer. 10. While operating the dryer adjust the is found the cause will be dis- metering roll dials to the recom- played on the LCD. If all safe- 5. Turn the drying mode switch to mended settings. See the charts on ties do not detect a problem the continuous flow. pages 19 through 22. 18 DRYER START UP & OPERATION

1200 SERIES CONTINUOUS FLOW METERING ROLL SETTINGS

Full Heat Initial Moisture Approx. 2 Speed 2 Speed Moisture Removed Dry Time 1 Speed Low High

17% 2 pts. 16 min. 625 317 875

18% 3 pts. 21 min. 476 270 775

19% 4 pts. 26 min 385 241 675

20% 5 pts. 31.5 min. 317 213 575

21% 6 pts. 37 min. 270 196 476

22% 7 pts. 41.5 min. 241 185 385

23% 8 pts. 47 min. 213 172 317

24% 9 pts. 51 min. 196 161 270

25% 10 pts. 54 min. 185 150 241

26% 11 pts. 58 min. 172 140 213

27% 12 pts. 62 min. 161 132 196

28% 13 pts. 66.5 min. 150 123 185

29% 14 pts. 71.5 min. 140 116 172

30% 15 pts. 76 min. 132 110 161

31% 16 pts. 81 min. 123 104 150

32% 17 pts. 86 min. 116 100 140

33% 18 pts. 91 min. 110 096 132

34% 19 pts. 96 min. 104 087 123

35% 20 pts. 100 min. 100 082 116

These are approximate starting points.

19 DRYER START UP & OPERATION

1200 SERIES CONTINUOUS FLOW METERING ROLL SETTINGS

Dry & Cool Initial Moisture Approx. 2 Speed 2 Speed Moisture Removed Dry Time 1 Speed Low High

17% 2 pts. 18 min. 363 187 650

18% 3 pts. 24 min. 272 163 550

19% 4 pts. 30 min 218 145 450

20% 5 pts. 35 min. 187 131 363

21% 6 pts. 40 min. 163 119 272

22% 7 pts. 45 min. 145 109 218

23% 8 pts. 50 min. 131 101 187

24% 9 pts. 55 min. 119 093 163

25% 10 pts. 60 min. 109 087 145

26% 11 pts. 65 min. 101 082 131

27% 12 pts. 70 min. 093 077 119

28% 13 pts. 75 min. 087 073 109

29% 14 pts. 80 min. 082 069 101

30% 15 pts. 85 min. 077 065 093

31% 16 pts. 90 min. 073 061 087

32% 17 pts. 95 min. 069 057 082

33% 18 pts. 100 min. 065 053 077

34% 19 pts. 105 min. 062 049 073

35% 20 pts. 110 min. 059 045 069

These are approximate starting points.

20 DRYER START UP & OPERATION

1200S SERIES CONTINUOUS FLOW METERING ROLL SETTINGS

Full Heat Initial Moisture Approx. 2 Speed 2 Speed Moisture Removed Dry Time 1 Speed Low High

17% 2 pts. 16 min. 655 333 850

18% 3 pts. 21 min. 499 283 760

19% 4 pts. 26 min 403 252 670

20% 5 pts. 31.5 min. 333 223 580

21% 6 pts. 37 min. 283 205 499

22% 7 pts. 41.5 min. 252 194 403

23% 8 pts. 47 min. 223 181 333

24% 9 pts. 51 min. 205 170 283

25% 10 pts. 54 min. 194 158 252

26% 11 pts. 58 min. 181 147 223

27% 12 pts. 62 min. 170 138 205

28% 13 pts. 66.5 min. 158 129 194

29% 14 pts. 71.5 min. 147 122 181

30% 15 pts. 76 min. 138 115 170

31% 16 pts. 81 min. 129 109 158

32% 17 pts. 86 min. 122 105 147

33% 18 pts. 91 min. 115 099 138

34% 19 pts. 96 min. 109 093 129

35% 20 pts. 100 min. 105 087 122

These are approximate starting points.

21 DRYER START UP & OPERATION

1200S SERIES CONTINUOUS FLOW METERING ROLL SETTINGS

Dry & Cool Initial Moisture Approx. 2 Speed 2 Speed Moisture Removed Dry Time 1 Speed Low High

17% 2 pts. 18 min. 293 151 420

18% 3 pts. 24 min. 220 132 370

19% 4 pts. 30 min 176 117 320

20% 5 pts. 35 min. 151 106 270

21% 6 pts. 40 min. 132 096 220

22% 7 pts. 45 min. 117 088 176

23% 8 pts. 50 min. 106 081 151

24% 9 pts. 55 min. 096 075 132

25% 10 pts. 60 min. 088 070 117

26% 11 pts. 65 min. 081 066 106

27% 12 pts. 70 min. 075 062 096

28% 13 pts. 75 min. 070 059 088

29% 14 pts. 80 min. 066 056 081

30% 15 pts. 85 min. 062 053 075

31% 16 pts. 90 min. 059 050 070

32% 17 pts. 95 min. 056 048 066

33% 18 pts. 100 min. 053 045 062

34% 19 pts. 105 min. 050 042 059

35% 20 pts. 110 min. 048 039 056

These are approximate starting points.

22 DRYER START UP & OPERATION

11. To move grain through the dryer burners and all augers will stop 6. Turn each f an switch to auto. The turn the moisture control switch immediately. fan will start, and the switch will to on. The switch will light up. Note: The Electronic Monitoring light up when airflow is detected. Note: When the unload switch Control System can be used to au- is in the 2 speed position, and the tomatically start the dryer. Place all 7. Start each burner by turning the moisture control thermostat switch the control panel selector switches heater switch to auto. After purg- is off, the speed of the metering rolls in the proper position. Open the elec- ing for approximately 10 sec- can be manually adjusted by turn- tric fuel shut off valve before press- onds the burner will fire, and the ing the high speed metering roll dial. ing the dryer power start button. The heater switch will light up indi- Turning the dial clockwise will in- controller will start all dryer compo- cating that the flame sensing crease the grain discharge rate, nents in their proper order. circuit is sensing burner flame. counterclockwise will decrease the For information concerning discharge rate. (The numbers on the CONTINUOUS BATCH burner adjustment see the pre speed dials indicate the percentage (STAGED BATCH ) start section of this manual. of full speed.) OPERATION 1. Turn the control power switch to on. 8. To properly set the correct dry, 12. At the end of the startup period, cool and unload time for various start the flow of grain out of the 2. Make sure the drying mode switch moisture content grains. See the dryer. Turn the unload switch to is turned to staged batch. charts on pages 25 through 28. the two speed position. The bottom auger and metering roll will 3. After the date and time appear, 9. If the dryer is being operated in immediately start, and the un- press the reset button. all heat, turn each fan switch to load switch will light. If additional on. In this position the fan will unloading equipment is uti lizing 4. Open the main fuel supply valve run continuously during both the the unload auxiliary over load on the tank if using LP gas, or dry and unload stages of the staged supplied with the dryer, this equip- the valve in the fuel supply line batch operation. If the dryer is be- ment will also immediately start. if using natural gas. Turn on the ing operated in the dry and cool Maxon electric shut off valve, mode, the preferred position for 13. To shut the dryer down, close if so equipped, or open the manual the fan switch is the on posi- the fuel supply valve at the fuel shut off valve to allow fuel flow tion, so the fan will run continu- tank or fuel source. Let the dryer to the dryer. ously. If desired, the fan can be run until the fuel supply lines turned off during the unload cycle drain, and the dryer automati- 5. The dryer should already be of the dry-cool-unload sequence cally shuts down due to loss of filled with grain. Turn the load by turning the fan switch to auto. flame. Close the fuel valve at the auger switch to auto. In both the dryer. Press the dryer power auto and manual position, the 10. If the dryer is being operated in stop button. Turn off the dryer's grain level switch will automati- all heat, turn each heater switch safety disconnect handle. Turn off cally keep the dryer full of grain. to on. The burner will operate the main power supply to the dryer. In the auto position the dryer will whenever the fan is operating. shut down after the preset time If the dryer is being used in dry 14. In case of emergency push the period on the out of grain timer, and cool, turn the heater switches dryer stop button. The fans, or if the grain flow to the dryer is to auto and the burner will interrupted. automatically shut down 23 DRYER START UP & OPERATION

during the cooling and unload- setting programmed into the the position of the switch is cor- ing cycles. system, turn the moisture con- rected. trol setting to off. To use the au- 11. Turn the unload switch to the tomatic moisture control so that 14. To shutdown the dryer, close the one speed position. The bottom the dry time is determined, not fuel supply valve at the fuel tank auger and metering rolls will only by the dry time setting, but or fuel source. If the burners are start automatically during the also by the moisture content of operating, let the dryer run out unload cycle of the dry-cool-un- the drying grain, turn the mois- of fuel causing an automatic load mode, along with any grain ture control switch to on, and set shutdown due to a loss of flame. handling equipment that is wired dial to a beginning setting of 135 °F. Close the fuel valve at the dryer, to the dryer. The speed at which and press the dryer power stop the metering rolls operate during the 13. To start the drying operation button. Turn off the dryer's main unload cycle is adjusted by using push the dryer power start but- circuit breaker located on the the high speed metering roll knob. ton. The controller will start all front of the power panel. Turn Turning the dial clockwise will in- the dryer components in their off the main power supply to the crease the grain discharge rate, and proper order. If any of the se- dryer. counterclockwise will decrease the lected switches are improperly discharge rate. positioned for staged batch dry 15. In case of an emergency, press ing, the display will indicate the the dryer power stop button. The 12. To control the length of the dry proper switch position, and will not burners, fans and all augers will cycle using only the dry time allow the dry er to operate until stop immediately.

FAN & HEATER SWITCH SETTINGS

Fan Setting Heater Setting Fan Function Heater Function

Auto Auto Fans stay on during dry and cool Burners stay on during dry timer cycle cycle only only

Auto On Fans stay on during dry and cool Burners stay on during dry and cool cycle only

On On Fans are on continuously Burners are on continuously

On Auto Fans are on continuously Burners shut down at the end of the dry cycle

At the end of the dry cycle in staged batch, the fans and heaters will continue running if in the Auto-Auto setting, until the preset temperature on the moisture control thermostat is reached.

24 DRYER START UP & OPERATION

1200 SERIES BATCH TIMER SETTINGS

Full Heat Dry & Cool Fan & Burner Switches on Manual Fans on Manual Burners on Auto

Initial Moisture Approx. Approx. Moisture Removed Dry Time Dry Cool Unload* Dry Time Dry Cool Unload*

17% 2 pts. 16 min. 6 min. 0 10 min. 18 min. 18 min. 18 min. 10 min.

18% 3 pts. 21 min. 11 min. 0 10 min. 24 min. 24 min. 18 min. 10 min.

19% 4 pts. 26 min 16 min 0 10 min. 30 min 30 min 18 min 10 min.

20% 5 pts. 31.5 min. 21.5 min. 0 10 min. 35 min. 35 min. 18 min. 10 min.

21% 6 pts. 37 min. 27 min. 0 10 min. 40 min. 40 min. 18 min. 10 min.

22% 7 pts. 41.5 min. 31.5 min. 0 10 min. 45 min. 45 min. 18 min. 10 min.

23% 8 pts. 47 min. 37 min. 0 10 min. 50 min. 50 min. 18 min. 10 min.

24% 9 pts. 51 min. 47 min. 0 10 min. 55 min. 55 min. 18 min. 10 min.

25% 10 pts. 54 min. 44 min. 0 10 min. 60 min. 60 min. 18 min. 10 min.

26% 11 pts. 58 min. 48 min. 0 10 min. 65 min. 65 min. 18 min. 10 min.

27% 12 pts. 62 min. 52 min. 0 10 min. 70 min. 70 min. 18 min. 10 min.

28% 13 pts. 66.5 min. 56.5 min. 0 10 min. 75 min. 75 min. 18 min. 10 min.

29% 14 pts. 71.5 min. 61.5 min. 0 10 min. 80 min. 80 min. 18 min. 10 min.

30% 15 pts. 76 min. 66 min. 0 10 min. 85 min. 85 min. 18 min. 10 min.

31% 16 pts. 81 min. 71 min. 0 10 min. 90 min. 90 min. 18 min. 10 min.

32% 17 pts. 86 min. 76 min. 0 10 min. 95 min. 95 min. 18 min. 10 min.

33% 18 pts. 91 min. 81 min. 0 10 min. 100 min. 100 min. 18 min. 10 min.

34% 19 pts. 96 min. 86 min. 0 10 min. 105 min. 105 min. 18 min. 10 min.

35% 20 pts. 100 min. 90 min. 0 10 min. 110 min. 110 min. 18 min. 10 min.

These are approximate starting points. *Set unload meter roll high speed setting to 999. If unload equipment cannot adequately keep up, lower the speed setting and add time to the unload timer setting to completely unload the batch. In full heat mode, the time added to the unload timer will need to be substracted from the dry timer. If fan is on auto and does not run during unload, set cool timer to 25 minutes. New unload time calculation = present unload time new dial setting 1000 Example 13.75 = 11 ÷ 800 1000

25 DRYER START UP & OPERATION

1200 SERIES STAGED BATCH TIMER SETTINGS

Full Heat Dry & Cool Fan & Burner Switches on Manual #2 Fan on Manual #2 Burner on Auto #1 Fan on Manual #1 Burner on Off

Initial Moisture Approx. Approx. Moisture Removed Dry Time Dry Cool Unload* Dry Time Dry Cool Unload*

17% 2 pts. 16 min. 2 min. 0 3.5 min. 18 min. 9 min. 3 min. 3.5 min.

18% 3 pts. 21 min. 3.5 min. 0 3.5 min. 24 min. 12 min. 3 min. 3.5 min.

19% 4 pts. 26 min 5.5 min 0 3.5 min. 30 min 15 min. 3 min 3.5 min.

20% 5 pts. 31.5 min. 7 min. 0 3.5 min. 35 min. 17.5 min. 3 min. 3.5 min.

21% 6 pts. 37 min. 9 min. 0 3.5 min. 40 min. 20 min. 3 min. 3.5 min.

#2 Fan on Manual #2 Burner on Manual same #1 Fan on Auto #1 Burner on Auto

22% 7 pts. 41.5 min. 10.5 min. 0 3.5 min. 45 min. .5 min. 18 min. 3.5 min.

23% 8 pts. 47 min. 12.5 min. 0 3.5 min. 50 min. 2.5 min. 18 min. 3.5 min.

24% 9 pts. 51 min. 13.5 min. 0 3.5 min. 55 min. 4 min. 18 min. 3.5 min.

25% 10 pts. 54 min. 14.5 min. 0 3.5 min. 60 min. 5.5 min. 18 min. 3.5 min.

26% 11 pts. 58 min. 16 min. 0 3.5 min. 65 min. 7.5 min. 18 min. 3.5 min.

27% 12 pts. 62 min. 17.5 min. 0 3.5 min. 70 min. 9 min. 18 min. 3.5 min.

28% 13 pts. 66.5 min. 18.5 min. 0 3.5 min. 75 min. 10.5 min. 18 min. 3.5 min.

29% 14 pts. 71.5 min. 20.5 min. 0 3.5 min. 80 min. 12.5 min. 18 min. 3.5 min.

30% 15 pts. 76 min. 22 min. 0 3.5 min. 85 min. 14 min. 18 min. 3.5 min.

31% 16 pts. 81 min. 23.5 min. 0 3.5 min. 90 min. 15.5 min. 18 min. 3.5 min.

32% 17 pts. 86 min. 25.5 min. 0 3.5 min. 95 min. 17.5 min. 18 min. 3.5 min.

33% 18 pts. 91 min. 27 min. 0 3.5 min. 100 min. 19 min. 18 min. 3.5 min.

34% 19 pts. 96 min. 28.5 min. 0 3.5 min. 105 min. 20.5 min. 18 min. 3.5 min.

35% 20 pts. 100 min. 30 min. 0 3.5 min. 110 min. 22.5 min. 18 min. 3.5 min.

These are approximate starting points. *Set unload meter roll high speed setting to 999. If unload equipment cannot adequately keep up, lower the speed setting and add time to the unload timer setting to completely unload the batch. In full heat mode, the time added to the unload timer will need to be substracted from the dry timer. For additional cooling, set #1 fan switch on manual. If you need more time between dumps use batch mode. New unload time calculation = present unload time new dial setting 1000 Example 13.75 = 11 ÷ 800 1000

26 DRYER START UP & OPERATION

1200S SERIES BATCH TIMER SETTINGS