5 Maintenance
5-10
5.7 Changing oil
This section outlines the procedure for changing the oil.
The oil may only be changed when the unit is switched off and
fully depressurised! The unit should be at operating tempera-
ture (approx. 60°C - 80°C) when the oil change is carried out.
The unit should be run with the type of oil best suited to its op-
eration. The oil used by the factory is RENNER VDL N ISO 68.
It is recommended that this grade of oil is used.
Other oil grades must be comparable to the RENNER VDL ISO
68. Only refill the unit with oil of the same make and the same
grade.
Do not mix oils of different kinds!
Follow the safety instructions for venting the unit
(see Chap. 5.3)!
Step
Operation
1
Switch off the unit and take measures to prevent it
from being restarted. Allow the unit to cool to approx.
70°C and then remove the pressure as described in
Chapter 5.3.
2
Take a receptacle suitable for collecting the oil and
position it under the ball valve on the base of the
compressor block and then unscrew the plug and
open the ball valve.
3
Drain all the oil from the compressor block then close
the ball valve and replace the plug.
4
Pour the new oil into the filler neck up to the maxi-
mum level and replace the oil filler plug firmly by
hand.
5
Switch the unit on, let it run 2 to 3 times for only
about 5 seconds and switch it off again.This allows
the oil to be distributed in the unit before it is put on
load.
6
Switch the unit on and allow it to run for approx.
three minutes.
7
Check the oil level and, if necessary, refill to maxi-
mum mark.
8
Check drain plug and oil filler plug for leaks.
9
Record the oil change on the maintenance check
sheet.
Comply with environmental guidelines when disposing of
used oil!
* The machine must be completely emptied before using a synthetic oil,
e.g. (RENNER Super Lub).
(Including cooler and filter)
Content
Important note!
Changing the oil
