Instruction Manual

DG-1000 Dispenser
15
E1998 Nordson Corporation
All rights reserved
107 156C
Issued 11/98
Manual 12-35
See Figure 4.
CAUTION: To prevent damage to the ball and needle, do not
use tools to grip the needle threads.
1.Carefully push the needle (5) out of the body assembly.
2.Inspect the needle (5) and the air piston seal (4) for damage. If the
air piston seal is damaged, perform the following steps:
a.Remove the spring retainer (1) from the needle (5). Use a wrench
to hold the top of the seal lock nut (2). Use another wrench to
loosen and remove the retainer.
b.Remove the seal lock nut (2) from the needle (5).
c.Remove the air piston (4) from the seal lock nut (2). Replace the
air piston. Refer to Assembly, Air Piston in this manual.
d.Inspect the O-ring (3) on the seal lock nut (2) for damage.
Replace the O-ring, if necessary.
3.Inspect the U-cup seals (8) in the lower and upper bodies (10, 11).
Do not remove them unless
Sthey are damaged
Sair or fluid leaks from the upper body weep hole
4.If the U-cup seals are damaged, grasp the lower body (10) and
remove the O-ring (7).
Dispenser Bodies