4
4. Maintenance and Inspection
4.1 Troubleshooting and Corrective Measures
Symptom Contents of inspection Corrective measure
♦ The pump fails to start. - Check if the power cable is cut.
- Check if the fuse is blown.
- Uninstall the lower pump and operate
only by the motor.
↓
(Separate the lower pump and operate
the pump with only the motor.)
→ If the pump is operated, the lower
pump is defective.
→ If the pump is not operated, the
motor is defective.
- Change to the new cable.
- Change to new fuse (7A).
- Repair service for the lower pump.
- Repair service.
♦ The pump is operated
but does not feed the
material by pressure.
- Check if the delivery hose and grease
gun is clogged up.
- Check if the grease is ran out.
- Check if the grease does not touch to
the pump suction because of cavity or
diagonal installation of the follower
plate.
- Uninstall the lower pump and operate
only by the motor.
- Remove the cause of clogging.
- Replace to the new pail.
- Install the follower plate horizontally
and push down till the grease comes
out from the packing. Then operate
the pump again.
- Check the lower pump.
♦ The pump is operated
but the pressure and
flow rate are insufficient.
- Check if leakage is found on the
connection of valve kit, hose and gun.
- Check if the relief valve is loosens.
- Check if the valve seat at lower pump
is worn out.
- Tighten the connections
- Adjust the relief valve at proper
position.
- Change to new valve seat.
♦ Grease leaks from the
motor.
- Check if the seal packing between
motor and material pump is worn out.
- Change to new seal packing.
♦ The pump makes noise. - Check if foot valve is stuck by foreign
substance.
- Remove the foreign substance.
4.2 Maintenance and Inspection
The hose is a consumable part. Check it periodically. If any blemish or leakage is found, replace the hose little
earlier. The packing and slide portion parts of the pump are worn away. Check and replace them once a year.
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