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780S Series Spray Valves VALVEMATE™ 7040 Controller Operating Manual

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780S Series Spray Valves VALVEMATE™ 7040 Controller Operating Manual 780S Series Spray Valves VALVEMATE™ 7040 Controller Operating Manual ® A NORDSON COMPANY US: 888-333-0311 UK: 0800 585733 Mexico: 001-800-556-3484 If you require any assistance or have spe- cific questions, please contact us. US: 888-333-0311 Telephone: 401-434-1680 Fax: 401-431-0237 E-mail: [email protected] Mexico: 001-800-556-3484 UK: 0800 585733 EFD Inc. 977 Waterman Avenue, East Providence, RI 02914-1342 USA Sales and service of EFD Dispense Valve Systems is available through EFD authorized distributors in over 30 countries. Please contact EFD U.S.A. for specific names and addresses. Contents Introduction ..................................................................2 Specifications ..............................................................3 How The Valve and Controller Operate ......................4 Controller Operating Features ....................................5 Typical Setup ..............................................................6 Setup ........................................................................7-8 Adjusting the Spray......................................................9 Programming Nozzle Air Delay ..................................10 Spray Patterns ..........................................................11 Troubleshooting Guide ........................................12-13 Valve Maintenance................................................14-16 780S Exploded View..................................................17 Input / Output Connections..................................18-19 Connecting More than One 7040 Controller..............20 7040 Schematic and Replacement Parts ..................21 Warranty ....................................................................22 Meets CSA and CE standards. 780/7040-MAN ©2003 EFD Inc. This manual is for the express and sole use of EFD valve purchasers and users, and no portion of this manual may be reproduced in any form. EFD and VALVEMATE are trademarks of EFD Inc. Teflon is a registered trademark of DuPont. Introduction The 780S Series precision Low Volume Low Pressure (LVLP) liquid spray valves are manufactured to the highest quality standards. The VALVEMATE™ 7040 controller features an adjustable nozzle air flow regulator and a microprocessor-based timed air pres- sure output for controlling the ON time of the 780S valve. This equipment is produced to very close tolerances to ensure proper and reliable operation. Each valve and controller has been thoroughly tested prior to shipping. The 780S and VALVEMATE™ 7040 are simple to use and will operate many millions of cycles without main- tenance. Spray valve cleaning is accomplished by purging with the appropriate solvent. To obtain the maximum performance from this fine equipment, please read through these instructions carefully. 2 / Introduction Specifications 780S Spray Valve VALVEMATE™ 7040 Controller Size: 4.120" x 1.060" dia. (104.6 x 26.9 mm) Cabinet size: W 7.5" x D 5.6" x H 2.7" Weight: 780S: 8.3 oz (235 g) (W 19 x D 14 x H 7 cm) 780S-SS: 14.3 oz (405 g) Net weight: 3.1 lb (1.4 kg) Air cylinder body: 780S-SS: Type 303 stainless steel Air input required: 70 psi (4.8 bar) minimum 780S: Hard-coated aluminum Input voltage: 100/120/220 VAC selectable Fluid chamber: 780S-SS: Type 303 stainless steel 780S: Hard-coated aluminum Power required: 50/60 Hz 14/12VA Piston: Type 303 stainless steel Foot pedal voltage: 5 VDC Piston return spring: Type 303 stainless steel Time range: .001 to 99.9 seconds Needle and Nozzle: Type 303 stainless steel Timing control: Microprocessor-based CMOS logic Time cycle repeat 0.00005 seconds Air cap: 780S-SS: Type 303 stainless steel 780S: Plated brass Time reset: Less than 20 milliseconds Initiation: Dry contact closure or 5 to 24 VDC signal Needle packings: Teflon® Output pressure: Packing spring: Stainless steel Actuating air 70 psi (4.8 bar) Liquid inlet hole: 1/8 NPT female Nozzle air 1 to 30 psi (0.07 to 2.07 bar) Mounting: 1/4-28 UNF tapped hole Cycle rate: Exceeds 600 per minute Operating frequency: Exceeds 400 per minute Cycle end feedback circuit: N.C. solid-state switch Air pressure required: 70 psi (4.8 bar) 5 to 24 VDC, 250 mA maximum load Minimum mounting center distance: 1.067" (27.1 mm) Standard nozzle diameter: 0.046" (1.17 mm) Optional nozzle sizes: 0.028" (0.71 mm) 0.014" (0.36 mm) Spray patterns: Round (standard) Fan (optional) Note: All stainless steel valve parts are passivated. Specifications and technical details are subject to engineering changes without prior notification. 3 / Specifications How The Valve and Controller Operate The 780S is a normally closed, air actuated needle type spray valve that uses a Low Volume Low Pressure (LVLP) design for high transfer efficiency without overspray or airborne mist. Air pressure from the VALVEMATE™ 7040 controller at 70 psi (4.8 bar) acts on a piston ➀ that retracts the nee- ➀ Piston and needle dle ➁ from its nozzle seat ➂ and allows liquid to flow from the nozzle ➃. At the same time, nozzle air, also from the 7040, is turned on and flows from an annulus ➄ around the liquid nozzle. This adjustable nozzle air creates a pressure drop around the nozzle, causing the liquid to atomize into fine droplets. When the timed actuating air from the 7040 shuts off, the piston spring moves the needle onto the nozzle seat, shutting off liquid flow. A preset nozzle air delay ensures that no liquid remains on the nozzle after the valve closes, eliminating after-deposit spatter. The amount sprayed is controlled by the valve open closed position time, reservoir pressure and needle stroke. Area of coverage is determined by the nozzle size and the dis- tance between the 780S nozzle and the work surface. ➁ Needle ➃ Nozzle ➂ Nozzle seat ➄ Annulus open position Piston and needle assembly Fluid Nozzle air Operating air 4 / How The Valve and Controller Operate Controller Operating Features 1. Cycle Press to initiate one complete dispense Nozzle Nozzle cycle. Press this button again to interrupt a air gauge air regulator 123 timed cycle. Press and hold while in the time override mode for continuous cycle. Release to stop. VALVEMATE 7040 2. Time override Press to override time control. Display will show (---). While in this mode, dispensing is manual using the cycle button, voltage initi- ate source or foot pedal (optional, #2015A). 3. Decimal 4 5 Press to move decimal and change time range maximums from .999 to 9.99 or 99.9. Decimal does not appear in the display while Air input in the .999 second range. Input power quick-coupler Valve cord receptacle 70 psi (4.8 bar) operating 4. Program (see page 7 Power minimum input air output Press to clear display to zeros. Display for details) switch 6 pressure (white) flashes bright/dim while in program mode. Press cycle button and hold until proper Output A amount is sprayed. Total spray time will be 120 displayed. Press program button again to lock in spray time. Output B 5. Time set Press to change time setting up or down. Press and release to advance one digit at a time, or press and hold to scroll quickly. 9 pin D connector Air Nozzle I/O interface exhaust air output 6. Foot pedal connector (see page 18 for details) If using the optional foot pedal, press the (black) pedal momentarily to initiate the 7040 con- troller. To interrupt a timed dispense cycle, press the pedal again. 5 / Controller Operating Features Typical Setup 5 micron filter regulator Shutoff valve Plant air 70 psi (4.8 bar) White quick connect To exhaust To pressurize minimum Air tee Flexible air line Black quick-connect Control air line Fluid feed hose Pressurized reservoir Pressure relief valve with air regulator 5 0 20 VALVEMATE 7040 Fluid inlet fitting ValveMate™ 7040 Controller #7543BP (installed) for 1/4" OD tube #7610BP (included) for 3/8" OD tube Material Constant air Caution: Always depressurize the reservoir before Pulsed air for valve operation opening. To do this, slide the shutoff valve on the Pulsed nozzle air air line away from the reservoir. If using an EFD tank, open the pressure relief valve as well. Before opening the reservoir, check the pressure gauge to verify that pressure is zero (0). On all EFD cartridge reservoirs, the unique thread- ed design provides fail-safe air pressure release during cap removal. 6 / Typical Setup Setup supply. 4. Install the air tee with barb fitting Input Power (#1116) in the output of the filter regulator 1. View cartridge window in power cord and, using the screw clamp provided, install receptacle to ensure that fuse voltage the black hose with coupling to the barb fit- value matches your input voltage. ting. The quick-connect on the air tee is used to provide air pressure to the air pres- If it does not match, remove the fuse car- sure regulator on EFD fluid reservoirs. This tridge. Then remove the fuse holder connection will be made in step 10. from the cartridge, rotate the holder and 5. Remove the cap plug from the air input position the correct voltage to show of the VALVEMATE™ 7040 and attach the through the cartridge window. Replace input air hose coupling onto the controller the cartridge into the power cord recep- air input fitting. Adjust the filter regulator to tacle and ensure that both sides snap 70 psi (4.8 bar). securely into position. 6. Mount the 780S valve with an EFD Connect the power cord. Universal Valve Mount (#7002VM) or other appropriate fixture. Spare fuse 7. Connect the fluid feed hose to the reservoir outlet and the 780S inlet port using appropriate fittings shown on the 220 Setup Schematic, page 6. 120 100 8. The 780S is equipped with nozzle and control air hoses with male quick-connects Voltage value that plug into the VALVEMATE™ 7040. Plug Cartridge window the control air hose labeled “A” into output (check voltage indicated) “A” (white) on the rear panel of the 7040 Initiate Connection and the nozzle air hose labeled “B” into output “B” (black), also located on the 7040 2. The 7040 is normally operated by apply- rear panel. ing a 5 to 24 VDC pulse to terminal pins 9.
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