Jun-Air 6-4 Mode D'emploi page 7

(fig. 1)
8
Oil change
In connection with repair of model 6 motors, e.g. change of valve plate or other
internal motor parts or in case the compressor is installed in a very dusty
environment, oil change may be necessary. Proceed as follows:
1. Remove the ribbed cover by loosening the 4 screws (fig. 1).
2. Tilt the motor towards side with outlet and at the same time hold the internal
motor parts in place with hand. Pour all oil out of housing (fig. 1). In case of
dirt particles at the bottom of the motor housing, clean with a rag.
Note!
Waste oil is to be handled according to the environmental rules in
force in the country.
3. Tilt the motor back and fill with SJ-27 oil (approx. 0.75l) (fig. 1).
4. Clean the edge of casing and cover. Check the O-ring of the ribbed cover.
5. Replace the ribbed cover and check during operation that the O-ring is placed
correctly to ensure a 100% tight closing between housing and cover.
Important!
Always use SJ-27 oil as other types of oil may cause serious
mechanical damage to the compressor. Consequently, the
warranty only applies if SJ-27 oil is used.
Check the pumping time
The pumping time indicates the condition of the compressor provided that there
are no leaks in the system where the compressed air may leak. Test the compressor
as follows:
1. Empty the air receiver of compressed air (the pressure gauge shows 0 bar).
2. Close the outlet on the air receiver and check that the drain cock is closed.
3. Start the compressor and note how long it takes until it switches off.
Make sure that the pressure in the air receiver is 8 bar/120 psi as deviations
may indicate the wrong results (see technical details).
Important!
Always test the compressor when cold as the time indicated refers
to the pumping time of a cold compressor. The pumping time of a
warm compressor is much longer and consequently, the result
would be misleading.
Operating manual