Replacing The Oil; Cleaning The Pump - Makita DVP181 Bedienungsanleitung

Stop the pump:
To make pump life longer and smooth start-up, these
procedures to shut off pump should be followed.
1. Close the manifold valve between the pump and the
system.
2. Remove the hose from the pump inlet.
Cover the inlet port opening to prevent any contamination
or foreign particles from entering the port.
Checking the oil
► Fig.7:
1. Level line
• Always check the
(deterioration, etc.) before using the pump.
NOTE: Add oil until the oil level is between the upper
and lower level lines of the sight glass. The quantity of
oil is 300 ml.
NOTE: The oil level is important. If it is not between the
upper and lower level lines, it can cause malfunction.

Replacing the oil

► Fig.8:
1. Drain valve
1. Operate the pump for 1 or 2 minutes to warm up the
oil.
2. Turn the pump off.
Troubleshooting
Condition
The pump does not start.
The pump does not enough vacuum.
Oil leakage
Abnormal noise
Remark: If these procedures do not solve the problem, contact with your nearest Makita authorized distributor or send
your pump to our service center.
2. Sight glass
oil level and condition
Possible Cause
1. The battery is not set properly.
2. The ambient temperature is too low.
3. Poor wiring connection.
4. The pump is locked.
5. Motor failure.
1. Leaking from the system.
2. Insufficient oil.
3. Dirty oil.
4. Pump parts are worn out.
5. Damaged fittings, gaskets and seal.
6. Motor failure.
1. Damaged gaskets and shaft seals.
2. Damaged O-ring of oil drain valve.
3. Oil drain valve is loose.
1. Motor failure.
2. Bearing failure.
3. Loose bolts.
4. Pump failure.
5. Air is sucked.
3. Remove the drain valve and drain the oil.
4. Refer to "Adding oil" and add new oil.
• Dispose of the old oil in accordance with local
regulations.
NOTE: It is recommended to change the oil after
20 hours of usage to protect pump components from
contaminants pulled into the pump.
When vacuuming on old refrigeration systems, change
the oil after every usage.
Vacuum pump oil:
The condition and type of oil used in any high performance
vacuum pump are extremely important in determining
the ultimate attainable vacuum. It is recommended to
use the High Performance Vacuum Pump Oil, which is
specifically blended to maintain maximum viscosity at
normal temperatures and to improve start up under cold
weather.

Cleaning the pump

1. When the oil is extremely dirty, replace the oil and
then operate the pump for 3 to 5 minutes.
2. Drain the oil and add new oil.
If the drained oil is still dirty, repeat this cleaning
process two or three times.
10 ENGLISH
Solution
1. Set the battery properly.
2. Warm up the pump in doors.
3. Repair.
4. Repair.
5. Repair.
1. Repair the system.
2. Refill or change oil.
3. Clean the tank and change oil.
4. Repair.
5. Repair.
6. Repair.
1. Repair.
2. Replace O-ring.
3. Tighten Oil drain valve.
1. Repair.
2. Repair.
3. Tighten bolts.
4. Repair.
5. Tighten caps and connections.
Replace gaskets and O-rings.
Replace fittings or re-seal them.