Troubleshooting
30 309550ZAP
Troubleshooting
1. Follow the Pressure Relief Procedure, page 19,
before checking or repairing the gun.
2. Check all possible problems and causes before
disassembling the gun.
NOTICE
To prevent cross-contamination in the gun, do not
interchange A component (isocyanate) and B
component (resin) parts. Cross-contamination can
result in cured material in the gun. Cured material may
damage the sealing surfaces, block fluid passages,
and prevent gun function.
Problem Cause Solution
Gun does not fully actuate when
triggered
The safety lock is engaged. Disengage safety lock. See Piston
Safety Lock, page 20.
The muffler is plugged (22). Clean the muffler. See Clean
Muffler, page 27.
The air valve o-rings are damaged
(24).
Replace the air valve o-rings. See
Inspect the Air Valve, page 28.
Fluid does not spray when the gun is
fully actuated
The fluid valves are closed (12b). Open the fluid valves.
The impingement ports are plugged. Clean the impingement ports. See
Clean Impingement Ports, page 23.
The check valves are plugged (26). Clean the check valves. See Inspect
the Check Valves, page 26.
Gun actuates slowly The muffler is plugged (22). Clean the muffler. See Clean
Muffler, page 27.
The piston o-rings are damaged (16,
17).
Replace the piston o-rings. See
Parts, page 33.
The air valve is dirty, or the o-rings
are damaged (24).
Clean air valve or replace o-rings.
See Inspect the Air Valve, page 28.
Gun delays, then actuates abruptly The material around side seals is
cured (18).
Inspect side seals (18c) and mix
chamber (19) for scratches. Replace.
See Inspect the Mix Chamber and
Side Seal Cartridges, page 24.
The retaining ring (9) is not bottomed
out.
Tighten retaining ring until bottomed
out.
Loss of round pattern The mix chamber nozzle is dirty. Clean the mix chamber nozzle. See
Clean Mix Chamber Nozzle, page
23.
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