VWR Rotary Vane Pump ver 1.3 23.11.2020
11.41 Draining the oil
Block the inlet port and switch on the vacuum pump and let it work for about 10 minutes to warm the oil.
Switch off the pump, disconnect from the power outlet and from the vacuum system.
Unscrew the oil drain plug from the pump casing while the pump is at operating temperature.
Tilt the vacuum pump slightly, catches the oil in a suitable vessel and dispose of it in accordance with
the applicable regulations.
11.42 Filling up with oil
Switch off the pump, disconnect from the power outlet and from the vacuum system.
Remove the oil fill plug
Pour in the oil until it reaches the upper mark “FULL”.
Screw in the oil fill plug together with the seal once again.
Block the inlet port and switch on the vacuum pump and let it work for about 2 minutes.
Check the oil level when the pump is switched off, repeat if necessary.
WARNING!
Avoid skin contact with the oil! Wash hands thoroughly after handling. Keep out of reach
of children. Dispose of the oil in accordance with the valid environmental protection
regulations! Do not overfill, excess oil tends to be splashed out the pump exhaust! Use
only VWR RV+ Oil.
For best dilution of contaminants, especially on chemical applications, we recommend to keep always oil
level at max.
11.43 Topping up the oil
- Remove the oil filler plug
- Pour in the oil until it reaches the upper mark
- Screw in the oil filling plug together with the seal once again
- Switch on the vacuum pump and let it work for about 2 minutes
- Check the oil level when the pump is switched off, repeat if necessary
11.44 Flushing
If the oil is heavily contaminated, the vacuum pump must be flushed, e.g.
- heavy clouding by condensates
- suspended particles such as dust, fibres, abraded particles
- dark coloration of the oil
The flushing liquid should be the type of oil which is currently being used.
Procedure
After the vacuum pump has been filled with fresh oil, allow it to warm up by running it with the suction port
closed. If you have established that the old oil, which you have previously drained, was contaminated by
condensate (e.g. water) then the gas ballast valve must be open. Drain the flushing oil. If the oil still appears
heavily contaminated, the flushing procedure must be repeated.
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