752V-HL Dispense Gun
3
www.nordsonefd.com [email protected]
800-556-3484 Sales and service of Nordson EFD dispensing systems are available worldwide.
Tools required:
7/64" hex wrench
1/8" flat tip screwdriver
Snap ring pliers (customer-supplied)
6" adjustable wrench (customer-supplied)
Service
Check the reservoir pressure gauge prior to
performing any maintenance to ensure that the
pressure is zero (0). To confirm this on EFD tanks,
slide the shutoff valve on the air hose away from the
tank, then open the pressure relief valve on the tank.
CAUTION
Normal cleaning is accomplished by purging with
appropriate solvent. Some material, however, may
cause a buildup on the fluid body and diaphragm,
which will require a periodic thorough cleaning by
removing the fluid body.
To remove the fluid body:
Remove the two retainer screws. It is not always
necessary to remove the fittings from the fluid body for
cleaning. If the fittings must be removed, be careful —
solidified material on the fitting thread could cause the
fluid body thread to strip out.
NOTE:
Avoid using sharp probes for cleaning. Any
scratches or nicks on the diaphragm or the sealing
side of the fluid body may cause the valve to leak and
require replacement of both the diaphragm and fluid
body.
To reinstall the fluid body:
1.
Align the fluid body holes with the diaphragm
and air cylinder body holes, and reinsert the
retainer screws. Tighten 1/2 turn after the screws
contact the fluid body. Proper torque is 0.75 N·m
(7 in.-lb).
2.
If the diaphragm holes do not line up with the
tapped holes in the air cylinder body, follow
Step #4 on the next page.
1. Engage the
screwdriver in the
piston shaft and hold.
2. To unscrew the
diaphragm, turn
counterclockwise.
