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308225
25
Troubleshooting
Problem
Cause
Solution
System will not run or
stops while running.
Air pressure or volume too low.
Closed or restricted air line or air valve.
Fluid valves closed.
Clogged fluid hose.
Air motor worn or damaged.
Displacement pump stuck.
Increase, check air compressor.
Open or clean as required.
Open fluid valves.
Replace fluid hose.
Service air motor.
See instructions in
separate manual 306982.
Service pump.
See instructions in sep-
arate manual 307944 or 684004.
System speeds up or
runs erratically.
Fluid containers are empty.**
Air in fluid lines.**
Displacement pump parts worn or dam-
aged.
Check often – keep filled.
Purge, check connections.
Service pump.
See instructions in sep-
arate manual 307944 or 684004.
Pump operates but resin
output pressure drops
during upstroke.*
Dirty, worn or damaged resin pump pis-
ton valve.
Worn or damaged resin pump piston
packings.
Clean, service pump.
See instructions
in separate manual.
Replace.
Pump operates but resin
output pressure drops dur-
ing downstroke.
Dirty, worn or damaged resin pump
intake valve.
Clean, service pump.
See instructions
in separate manual 307944 or 684004.
Pump operates but resin
output pressure drops
during both strokes.*
Dirty, worn or damaged resin pump pis-
ton valve.
Fluid supply low.**
Clean, service pump.
See instructions
in separate manual 307944 or 684004.
Refill or change container.
Pump operates but hard-
ener output pressure
drops during upstroke.*
Dirty, worn or damaged resin pump in-
take valve.
Worn or damaged hardener pump pis-
ton packings.
Clean, service pump.
See instructions
in separate manual 307944 or 684004.
Replace.
Pump operates but hard-
ener output pressure
drops during downstroke.*
Dirty, worn or damaged hardener pump
intake valve.
Clean, service pump.
See instructions
in separate manual 307944 or 684004.
Pump operates but hard-
ener output pressure
drops during both
strokes.
Dirty, worn or damaged hardener pump
intake valve.
Fluid supply low.**
Clean, service pump.
See instructions
in separate manual 307944 or 684004.
Refill or change container.
Fluid leaks around fluid
pump packing nut.
Loose packing nut or worn throat pack-
ings.
Tighten, replace.
Relief valve opens too
soon or will not close.
Relief valve needs adjusting or is dam-
aged.
Adjust, service pump.
See instructions
in separate manual 307944 or 684004.
*
Fluid ratio will be wrong.
**
Purge all air out of the system before proportioning the fluids.
Summary of Contents for Bulldog Hydra-Cat 231836
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