Page 24 of 28 – Operation and Maintenance Instructions for Offline Filtration Trolley OFT20 & OFT-HV
Document No: E1412015-1488-M-02
HYDAC Pty Ltd - 109-111 Dohertys Road, Altona North, Victoria 3025, Australia
Telephone: +61 (03) 9272 8900 ; Fax: +61 (03) 9369 8912 ; Website:
Errors and Troubleshooting
ERROR
Cause(s)
Remedy
Differential pressure
>2.5 bar OFT20
>2 bar OFT-HV
Medium is heavily
contaminated
Replace the filter element.
The contamination retention
capacity of the filter element
has been reached.
Replace the filter element.
The viscosity is too high
Warm the medium.
No flow
Pump transfers in the wrong
direction
Check the rotational
direction of the motor and,
if necessary, reverse the
phases.
The suction hose is
positioned above the
medium and sucks in air.
Sufficiently immerse the
suction hose in the
medium.
No function
The electrical connection is
faulty
Check the electrical
connection, plug, cable and
socket.
Pump cavitation
Flow is too high for inlet
hose configuration
Ensure hose length and
diameter complies with
guidelines in the document.
Mechanical restriction in inlet
hose
Remove any restrictions to
inlet hose.
The viscosity is too high
Warm the medium.
Mechanical vibration
Pump
– Worn or damaged
Repair or replace pump
Electric motor
– Worn or
damaged
Repair or replace electric
motor
High pump
temperature
Pump
– Worn or damaged
Repair or replace pump
High Fluid Temperature
Ensure fluid is within
acceptable limits
Leakage
Leakage of a component or
hose installation
Find leakage and replace
or repair component
If this section has not helped rectify your difficulties, please contact HYDAC for further
advice.
