Troubleshooting
28 309856A
Troubleshooting
1.
Follow
Pressure Relief Procedure
, page 17,
before checking or repairing gun.
2.
Check all possible problems and causes before
disassembling gun.
CAUTION
To prevent cross-contamination of the gun’s wetted
parts, do not interchange A component (isocyanate)
and B component (resin) parts.
PROBLEM CAUSE SOLUTION
Gun does not fully actuate when trig-
gered.
Safety lock engaged. Disengage safety lock, page 11.
Plugged muffler (22). Clean, page 21.
Damaged air valve o-rings (24). Replace, page 41.
Fluid does not spray when gun is fully
actuated.
Closed fluid valves (12b). Open.
Plugged impingement ports. Clean, page 22.
Plugged check valves (36). Clean, page 38.
Gun actuates slowly. Plugged muffler (22). Clean, page 21.
Damaged piston o-rings (16, 19). Replace, page 39.
Dirty air valve, or damaged o-rings
(24).
Clean air valve or replace o-rings,
page 41.
Purge rod will not actuate. No air pressure. Connect air supply.
Buildup on purge rod (31). See
Clean Purge Rod
, page 25.
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