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Troubleshooting Guide
-10-
Failure
Phenomenon
Cause of Issue
Troubleshooting Method
Low Vacuum
1. Insucient Oil
Add oil between the maximum and minimum
level
2. Pump oil Emulsified, Polluted
Replace with new oil
3. The Oil Inlet Is Blocked or the Oil
Supply is Insucient
Clean the oil inlet and filter
4. Leakage of the Pump System and
Connection
Check the system and the connection to
prevent the leakage
5.
Improper Selection of Pump
Check the size of the pumped container,
recalculate and select the appropriate type of
pump
6. Parts Wear and Tear due to Long
Time Used.
Repair or replace with a new pump
Oil Leakage
1.
The Oil Seal Is Damaged
Replace oil seal
2.
Loose or D
amaged
Tank
Connections
Tighten the screws and replace the O -ring
How to replace the vacuum pump oil
1. Run the pump for about 3-5minutes until it is warmed up to runs out the pump oil.
2. When the pump is running, open the air inlet port at the same time to let the oil flow
back to the oil tank. The pump must stop when replacing the oil.
Stop the pump and open the oil drain plug. Then open the catcher to speed up the
process of oil exhausting.
3. Tilt the pump body to completely drain the residual oil, and tighten the drain plug.
4. Open the catch device and add the new pump oil.
5. Cover the air inlet cap and start the pump to run-check the oil level after one
minute.If the oil level is below the lower limit, slowly add the oil until it reaches the
normal oil level. Finally, screw on the catcher.
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