307552
9
Troubleshooting
Check all possible remedies before disassembling the
pump.
NOTE:
Removing the muffler (P, Fig 6) will increase both the pump flow rate and the exhaust noise and will reduce icing.
WARNING
Follow the
Pressure Relief Procedure
on page 7
before servicing the pump.
PROBLEM
CAUSE
SOLUTION
Pump fails to operate
Material crystallized
Clean pump, use IPL more liberally
Dirty or worn air motor parts
Clean air motor, repair
Inadequate air supply or restricted
line
Clear line; see TECHNICAL DATA
Insufficient air pressure, closed or
clogged air valves
Check valves; increase pressure
Clogged material hose or valve
Clear obstruction
Worn or damaged valves or seals
Service pump
Pump operates, but output is low on
both strokes
Clogged material hose or valve
Clear obstruction
Exhausted material supply
Refill
Worn or damaged valves or seals
Service pump
Pump operates, but output is low on
down stroke
Worn or damaged valves or seals
Service pump
Intake valve held open
Clear valve, service pump
Pump operates, but output is low on
up stroke
Worn or damaged valves or seals
Service pump
Piston valve held open
Clear valve, service pump
Erratic or accelerated operation
Exhausted material supply
Refill
Broken air motor compression spring Replace spring
