Maintenance and Servicing
26
P1700040
1 -
Oil fill plug
2 -
Oil drain plug
3 -
Lower marking MIN
4 -
Oil sight glass
5 -
Upper marking FULL
Fig. 11 Oil level control
6.2 Oil Colour Check
WARNING!
The condition and quality of the pump oil have a substantial effect upon the
performance and operational readiness of the vacuum pump!
Comparing the colour of a sample of the pump oil with fresh oil provides an indication of the
contamination of the pump oil. You obtain the oil needed for testing from the oil drain aperture with the
vacuum pump switched off and at operating temperature.
Brown or black oil or oil smelling as if it has burnt must be removed from the vacuum pump. Flush the
vacuum pump and fill up with fresh oil.
6.3 Oil Change
WARNING!
If the vacuum pump has been used to pump media which are dangerous to health then
all measures must be taken to protect the service and operating personnel!
6.3.1 Draining the Oil
1. Block the inlet port and switch on the vacuum pump and let it work for about 10 minutes to
warm the oil.
2. Switch off the pump, disconnect from the power outlet and from the vacuum system.
3. Unscrew the oil drain plug from the pump casing while the pump is at operating
temperature.
4. Tilt the vacuum pump slightly, catches the oil in a suitable vessel and dispose of it in
accordance with the applicable regulations.
