(5) Mount the OMS retainer on the element with the surface on which the model no
of the oil mist trap is inscribed facing upward, as shown in Fig. 5.
Fig. 5 Mounting the OMS retainer
(6) Center the relief valve spring with the OMS retainer to mount it.
(7) To mount the top cover, match the stops on the inside wall of the top cover with
the fitting notches on the outer periphery of the case as shown in Fig. 6 and mount
it by reversing the removing procedure.
Fig. 6 Mounting the top cover in position
-8-
5.5 Troubleshooting
Table 6 Troubleshooting Checklist
Symptom
Cause
Corrective action
See
Much oil mist and oil
are discharged.
1) Element life is expired.
2) The element is clogged
with dust and dirt.
1) Replace element.
2) Replace or clean the
element.
5.4
5.4
3)
The element is not
reassembled properly.
3) Replace the element by
reassembling the oil
mist trap.
5.4
4)
The
maximum
flow
rate of the oil mist trap
is exceeded.
4)
Lower the pump
throughput to below the
max. flow rate of oil
mist trap.
5) The check valve is not
functioning properly.
5)
Repair or clean the
check valve.
Oil is not recovered into
the pump case.
1) The pump is running
continuously at a high
suction pressure.
1)
Stop the pump
temporarily (for five
minutes). Or lower the
pump intake pressure to
below 40 Pa.
4.1
2)
Foreign matter is
contained in the check
valve area.
2)
Repair or clean the
check valve area.
Unusual sound is heard. 1) Foreign
matter
is
trapped in the oil mist
trap.
1) Repair or clean the oil
mist trap.
2)
Element is not
properly reassembled.
2) Replace the element by
reassembling the oil
mist trap.
5.4
Oil leaks from the oil
mist trap.
1) The
O-ring
is
deteriorated.
1) Replace the O-ring.
2) The oil mist trap is not
securely mounted to
the pump.
2) Securely mount the oil
mist trap to the pump.
3.3
3)
The
maximum
flow
rate of the oil mist trap
is exceeded.
3)
Lower the pump
throughput to below the
max. flow rate of the oil
mist trap.
4) The element life is
expired or the element
is clogged.
4) Replace or clean the
element.
5.4
5) The oil mist trap was
not reassembled
properly when the
element was replaced.
5) Replace the element by
reassembling the oil
mist trap.
5.4
-9-