EN
a) Air entering the suction
hose/manifold
b) Worn piston seals
c) Ball checks not seating correctly.
a) Check o-rings and hose
connections
b) Replace piston seals.
c) Inspect, clean and/or replace balls
and seats.
a) Ball checks not seating correctly.
b) Main shaft bearings worn
c) Cam follower worn
d) Cam direction incorrect
a) No power
b) Inverter Unit or safety interlocks
‘tripped’
a) Check electrical supply
b) Check inverter and fault
conditions
a) Replace piston seals.
b) Inspect, clean and/or replace balls
and seats.
a) Worn piston seals
b) Inverter Unit or safety interlocks
‘tripped’
Fault Finding
Fluid Section
Pump will not ‘Prime’
Pump will not run
Symptom
Possible Cause
Remedy
Pump runs, but lack of pressure
Paint leaking from inside cover
Bellows seal failure
Replace bellows seal, check piston
seal, replace as necessary
Excessive Pressure Pulsation
Replace bellows seal, check piston
seal, replace as necessary
77-3226 R5.1
33/40
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