EN
Check seals and hose
connections.
Remove, clean, and inspect seat,
ball, and ball cage.
Fault Finding
Symptom Possible Cause Remedy
Worn air motor piston seals. Replace air motor piston seal.
Worn/failed air motor shaft seals.
Disassemble pump as required to
replace air motor shaft seals.
Worn fluid piston seal. Replace fluid piston seal.
Air exhaust restricted.
Check QE diaphragms and
exhaust outlets.
Paint leaking into
detection hose, air
bleeding from vent
plug
Bellows seal failure Replace bellows seal
Air motor shaft seal leaking
Check air motor shaft seal
replace as necessary
Check air supply
Air getting into fluid line, air supply restricted.
Replace if suspect or worn.
Obstructed fluid ball checks.
Pump runs but has
excessive pulsation.
77-3235 R4.6 16/24 www.carlisleft.com
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