Transcript
The 740V-HL (7021209) hand-operated dispense gun is a rugged industrial lever-actuated fluid dispensing valve. The valve incorporates a quick-change fluid body for fast and easy cleaning. The fluid inlet fitting for 1/4" OD feed tubing and an assortment of dispensing tips are included.
Getting started ... 1.
Install the feed tube from the fluid reservoir to the inlet fitting and tighten the compression nut to secure. The fluid body may be rotated up to 1/2 turn to locate the fluid inlet fitting in a comfortable position.
2.
Apply air pressure to the fluid reservoir. Start with a low setting of 20 psi (1.4 bar). If using an Nordson EFD fluid reservoir, refer to the User’s Guide for further instructions.
3.
Electronic pdf files of Nordson EFD manuals are also available at www.nordsonefd.com
Install an appropriate size dispensing tip to the outlet tip adapter. Use large tips for high viscosity materials and small tips for low viscosity.
User’s Guide
4.
Press the hand-lever to begin fluid flow. Release lever to stop fluid flow.
740V-HL Dispense Gun
5.
To achieve desired flow, change the size of the dispensing tip or adjust the reservoir fluid pressure.
Typical system setup #7002002 Five micron filter regulator for clean, dry filtered factory air.
Shutoff valve
For assistance call 800.556.3484 or email
[email protected]
For Nordson EFD LLC sales and service in over 30 countries, contact Nordson EFD or go to www.nordsonefd.com East Providence, RI USA USA & Canada: 800-556-3484; +1.401.431.7000
[email protected] Dunstable, Bedfordshire, UK 0800 585733; +44 (0) 1582 666334 Ireland 00800 8272 9444
[email protected]
#7020105 Hand-lever valve stand
Nordson India Private Limited +91 80 4021 3600 or Mobile: +91 98450 48481
[email protected] China: +86 (21) 3866 9006
[email protected] Singapore: +65 6796 9522
[email protected] #7010004 1.0 liter tank accommodates a one pound bottle.
The Wave Design is a trademark of Nordson Corporation. ©2012 Nordson Corporation 740V-HL-MAN-01 7021211 v121212
Service
Air cylinder cap #7021404
Normal cleaning is accomplished by purging with a solvent appropriate for the material being dispensed.
Nylon thrust washer #7014862
Piston return spring #7014748
To thoroughly clean valve body and replace needle packings: 1.
Remove the fluid inlet fitting and tip adapter/needle seat assembly from the fluid body.
2.
Remove the fluid body from the air cylinder body by turning counterclockwise until free. Then remove the O-ring from the fluid body.
3.
Remove the needle packings from the fluid body, using tool #7021552 supplied with the valve. Insert through outlet end of fluid body and push out the packings. See Figure 1.
4.
Remove any remaining packings and the packing spring from the needle.
5.
Clean the needle with a cloth dampened with solvent.
6.
Lubricate the needle with Nye Lubricants #865 grease and reinstall the needle packing spring and a new packing kit. See Figure 2.
7.
Install a new O-ring (#7014686) on the fluid body. Screw the air cylinder onto the fluid body. Hand tighten only. The body can be turned back out up to 1/2 turn to orient the fluid inlet fitting to the desired position.
8.
Nylon thrust washer #7014862
Snap ring #7014757
Piston and needle assembly #7007025
Maintenance Tools: packing extraction tool (part #7021552) snap ring pliers (customer supplied) small pliers (customer supplied) 6” adjustable wrench (customer supplied)
Bail hanger #7021220 Air cylinder and lever assembly #7021218
O-ring #7014684 Retaining washer #7014685 Packing spring #7014683 Needle packing assembly #7007014 O-ring #7014686 Fluid body #7021178
Reinstall the tip adapter/seat assembly.
Fluid inlet fitting #7021499
O-ring #7001002
To replace the piston and needle assembly:
Tip adapter / seat assembly #7021182
CAUTION: Check the reservoir pressure gauge prior to performing
1.
Remove the air cylinder cap by turning counterclockwise until free.
2.
Remove the piston return spring, thrust washers and snap ring.
3.
Pull the piston and needle assembly out of the air cylinder, using small pliers on the spring pilot at the top of the piston.
4.
Clean the air cylinder body wall and lubricate with Nye Lubricants #865 grease.
5.
Lubricate the needle with Nye Lubricants #865 grease, then reinstall in the air cylinder.
6.
Reinstall the snap ring.
7.
Reinstall thrust washers, spring and air cylinder cap. See Figure 3.
any maintenance to assure that pressure is zero (0). To confirm this on EFD tanks: slide the shutoff valve on the air hose away from the tank, and open the pressure relief valve on the tank.
For assistance, please call 800.556.3484.
Air cylinder cap Nylon thrust washer
Packing extraction tool #7021552
Air cylinder body
Piston return spring
Nylon thrust washer Spring pilot
Stainless steel packing expander Packing seat
Snap ring
Piston and needle assembly
Fluid body
O-ring
Figure 3
O-ring Retaining washer
Spring
Needle packings
Figure 1
Figure 2
Needle packing assembly
