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Troubleshooting
313872B 39
Troubleshooting
Use the following table to check all possible problems
and causes before disassembling gun. See Mainte-
nance on page 24 and Repair on page 31 for refer-
enced procedures.
Follow Pressure Relief Procedure, page 22, before
checking or repairing gun.
NOTICE
To prevent cross-contamination of the equipment’s wet-
ted parts, never interchange component A (isocyanate)
and component B (resin) parts. The gun is shipped with
the A side on the left. The fluid manifold, fluid housing,
side seal assembly, check valve cartridge, and mix
chamber are marked on the A side.
Problem Cause Solution
Gun does not fully actuate when trig-
gered
Safety lock engaged Disengage piston safety lock
Plugged breather plug Clean breather plug
Damaged air valve Replace if necessary
Fluid does not pour when gun is fully
actuated
Closed fluid valves Open valves.
Plugged orifice ports Clean orifice ports
Plugged check valves Clean check valves
Safety lock engaged Disengage piston safety lock
Gun actuates slowly Plugged breather plug Clean breather plug
Damaged piston o-rings Replace air piston o-rings
Damaged air gasket Replace
Dirty or damaged air valve Clean or replace valve
Gun delays, then actuates abruptly Cured material around the purge rod Inspect purge rod, mix module, and
orifices. Replace if necessary
Empty TSL cartridge Replace cartridge
Gun does not actuate when triggered Air supply to gun is shut off Open air supply
Foam build-up around front tip 1) Clean off front tip.
2) Use 3/4 in. wrench to loosen front
tip 1/8 turn and re-tighten.
Signal cable is disconnected Connect signal cable
Pressure imbalance Plugged orifice ports Clean orifice ports
Plugged check valves Clean check valves
Viscosities not equal Adjust temperature or orifice needle
to compensate
Plugged fluid screens Clean screens