Safety and operating instructions
Troubleshooting
Problem
Pump will not operate
Pump operates slowly or
erratically
Pump operates
backwards
Pump operates, but
discharge is low
12
Cause
Pump not connected properly
Oil flow too low
Incorrect hydraulic oil viscosity
Impeller jammed with debris
Cold hydraulic oil
Power source not adjusted correctly
Oil flow too low
Air in the hydraulic system
Incorrect hydraulic oil viscosity
Hoses interchanged
Only model WAP 2:
Strainer blocked
Only model WAP 3:
Inlet port blocked
Discharge hose blocked
Solution
Check the performance and connection of
the power source
Check the power source and ensure that
the flow is according to the technical
specifications
Use oil with correct viscosity according to
"Recommended hydraulic oil"
Remove debris from impeller
Allow oil to reach operating temperature
Consult manual for the power source
Check the power source and ensure that
the flow is according to the technical
specifications
Consult manual for the power source in
order to remove air from the system
Use oil with correct viscosity according to
"Recommended hydraulic oil"
Depressurize hydraulic system and switch
hose connections
Clean inlet strainer
Remove debris from the area around the
base legs and base plate
Remove and clean hose
WAP 2, WAP 3
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