Related Manuals for EFD 780S Series
Summary of Contents for EFD 780S Series
- Page 1 780S Series Spray Valves ™ VALVEMATE 7040 Controller Operating Manual ® A NORDSON COMPANY US: 888-333-0311 UK: 0800 585733 Mexico: 001-800-556-3484...
- Page 2 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.
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Page 3: Table Of Contents
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. -
Page 4: Introduction
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. -
Page 5: Specifications
Specifications VALVEMATE ™ 7040 Controller 780S Spray Valve 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... -
Page 6: How The Valve And Controller Operate
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 ™... -
Page 7: Controller Operating Features
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 timed cycle. Press and hold while in the time override mode for continuous cycle. Release to stop. -
Page 8: Typical Setup
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). -
Page 9: Setup
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. - Page 10 When the set screw is tightened, the valve is calibrated. Note: Regulator knobs on EFD tanks and conrollers have a push-to-lock, pull-to-unlock feature. Existing 780S Series valves are easily upgraded...
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Page 11: Adjusting The Spray
Adjusting the Spray Check to be sure steps 11 through 16 under Setup have been completed, then proceed to adjust the spray. ➀ ➀ 1. Using the needle stroke control knob on the 780S valve, set the fluid flow rate to one or two drops per second. -
Page 12: Programming Nozzle Air Delay
Programming Nozzle Air Delay The nozzle air time delay can be changed from the factory setting of 0.24 seconds to fine-tune the shutoff characteristics of the 780S spray valve. When making small deposits of low viscosity fluid, it may be necessary to shorten the time delay to eliminate a hollow center in the deposit. -
Page 13: Spray Patterns
Spray Patterns Round Pattern Spray Area Coverage Nozzle Distance from the Work Surface: 1" 2" 3" 6" Nozzles 25.40 mm 50.80 mm 76.20 mm 152.40 mm #7857-46SS Standard 0.046" 0.250" 0.500" 0.750" 1.500" (1.17 mm) 6.35 mm 12.70 mm 19.05 mm 38.10 mm #7857-46WA-SS Wide-angle 0.046"... -
Page 14: Troubleshooting Guide
Troubleshooting Guide Valve Trouble Possible cause and correction If valve operating pressure is too low, the valve will not open. Increase air pressure to 70 psi (4.8 bar) minimum. The reservoir air pressure may not be high enough. No fluid flow. Increase pressure. - Page 15 Check to be sure time override mode is off. Note: The EFD timer is very reliable. Any failure will be total, so that no inconsistency is possible. Most questions regarding the timer are resolved by simply turning the time override mode off.
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Page 16: Valve Maintenance
(Refer to Exploded View on page nance on the system. On all EFD 17.) tanks, there is a pressure relief valve that should be activated before open-... - Page 17 from the needle. Clean the needle with a cloth dampened in solvent. Lubricate the needle with Nye Lubricant #865 gel and reinstall the needle packing spring and packings in accordance with Figure 2 below. Install a new O-ring (#7517) on the fluid chamber. Screw the air cylinder onto the fluid chamber.
- Page 18 To replace the piston and needle assembly or Note: The piston and needle assembly is replaced the piston O-ring: as a unit and cannot be disassembled. 1. Remove the needle stroke control knob To reseat the needle and nozzle assembly: by turning counterclockwise until free.
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Page 19: 780S Exploded View
780S Series Items included in repair kit #780S-RK are listed in blue. Nozzle and Air Cap Assembly Round pattern Fan pattern Wide fan pattern Round wide-angle Nozzle Size Stainless Steel Stainless Steel Stainless Steel Stainless Steel 0.046" (1.17 mm) #7857-46SS... -
Page 20: Input/Output Connections
Input/Output Connections Note: For applications using more than one 7040, see page 20 for con- nection instructions. 1. Voltage Initiate Circuit The VALVEMATE ™ 7040 may be initiated with a 5 to 24 VDC signal across pins 1 and 2. The signal can be momentary (no less than 0.02 seconds) or maintained. - Page 21 Voltage Initiate Circuit Programmable 5 to 24 VDC power source display power consumption Micro- 2.2 mA at 5 VDC Opto controller 15.0 mA at 24 VDC coupler End-of-Cycle Feedback Circuit 5 to 24 VDC power Fuse source maximum load 250 mA Opto coupler A relay is...
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Page 22: Connecting More Than One 7040 Controller
Connecting more than one 7040 Controller Follow these instructions and diagrams when the Voltage Initiate or End-of-Cycle Feedback features are used in a multiple 7040 installation. 1. Voltage Initiate Circuit To start the dispense cycle for multiple 7040's at the same time, connect the Voltage Initiate Circuit in paral- lel as illustrated. -
Page 23: 7040 Schematic And Replacement Parts
Replacement Parts for the 7040 Controller 2-2002-7040 Regulator assembly 0 to 30 psi, 0 to 2.07 bar 2-2003-7040A Control solenoid assembly 2-2003-7040B Nozzle air solenoid assembly 2-2006DB-VC Display PCB assembly 2-2006PS-VC Power supply PCB assembly 2-2017-1500 Foot pedal receptacle assembly 2001A Gauge 0 to 30 psi, 0 to 2.07 bar 2004B... -
Page 24: Warranty
In no event shall any liability or obligation of EFD arising from this warranty exceed the pur- chase price of the equipment. This warranty is valid only when oil-free, clean, dry, filtered air is used.
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