GA01201_1002 - 07/2005
23
Maintenance
5.2
Oil Change
Before pumping oxygen (or other highly reactive gases) at concentrations
exceeding the concentration in the atmosphere
(> 21 % for oxygen) it will be necessary to use a special pump. Such a
pump will have to be modified and degreased, and an inert special
lubricant (like PFPE) must be used.
Hazardous substances may escape from the pump and the oil. Take ade-
quate safety precautions. For example wear gloves, face protection or
breathing protection.
Observe all safety regulations.
For proper operation of the pump, it is essential that the pump has an ade-
quate supply of the correct and clean oil at all times.
The oil must be changed when it looks dirty or if it appears chemically or
mechanically worn out (see Section 5.1.1).
The oil should be changed after the first 100 operating hours and then at
least every 2,000 to 3,000 operating hours or after one year. At high intake
pressures and intake temperatures and/or when pumping contaminated
gases, the oil will have to be changed much more frequently.
Further oil changes should be made before and after long-term storage of
the pump.
If the oil becomes contaminated too quickly, install a dust filter and/or oil fil-
ter (see Section 1.3).
Contact us for more information in this matter.
Only change the oil after the pump has been switched off and while the
pump is still warm.
Required tool:
Allen key 8 mm.
Remove the oil-drain plug (9/4) and let the used oil drain into a suitable con-
tainer. When the flow of oil slows down, screw the oil-drain plug back in,
briefly switch on the pump (max. 10 s) and then switch it off again. Remove
the oil-drain plug once more and drain out the remaining oil.
Screw the oil-drain plug back in (check the gasket and reinstall a new one
if necessary).
Remove the oil-fill plug (9/1) and fill in with fresh oil.
Screw the oil-fill plug (9/1) back in.
If there is the danger that the operating agent may present a hazard in
any way due to decomposition of the oil, or because of the media which
have been pumped, you must determine the kind of hazard and ensure
that all necessary safety precautions are taken.
Torque for the oil-fill plug (9/1):
10 Nm
Gasket: P/N: 239 55 165
Torque for the oil-drain plug (9/4):
10 Nm
Gasket: P/N.: 239 55 165
We can only guarantee that the pump operates as specified by the
technical data if the lubricants recommended by us are used.
Caution
Warning
Warning
Torques
Caution
