OLF-5 Series
Errors and Troubleshooting
HYDAC FILTER SYSTEMS GMBH
en
Page 32 / 52
BeWa OLF5_Serie 3433222b en-us 2011-11-14.doc
2011-11-14
Errors and Troubleshooting
Error
Cause(s)
Remedy
Pump transfers in the
wrong direction
Make sure that the pump is functioning
in the direction shown by the arrows on
the housing. If necessary, switch two
phases in the motor control box.
Air in suction area
and pump
It might take several minutes for the
pump to remove the air. It may help to
turn the OLF-5 into horizontal position
until the air has been removed.
If the pump is still not functioning after
~ 5 min, pre-fill the pump (via the
suction line) with the medium to be
pumped.
No oil flow
Operating viscosity
<200 mm²/s and
pump not filled
In this viscosity range, the pump
requires approx. 10 minutes to reach
the maximum. flow rate.
Medium heavily
contaminated
Filter element lifetime
exceeded
Replace filter element
Filter
contaminated
(Clogging indicator
appears)
Viscosity of the fluid
is too high
Wait until the oil has been warmed up
by pumping within the pump (pressure
relief valve opened). After the fluid has
been warmed up the pump starts
operation.
Leakages in the
filter housing
Re-tighten the drain screw or housing
clamp on the filter housing (tightening
torque for clamp: 5 Nm (max. 10 Nm))
For Spin-on models, check if the
element is tightened, or change seal
