7.2
[en] 02/2014
Installation and operating manual - NK 31ROTORCOMP VERDICHTER
7.2 Oil level
An important factor for the operating safety of the
system is the oil level in the oil reservoir.
The oil level check must be carried out before
commissioning the screw compressor module
and then repeated every 100 operating hours..
The exact oil level check can only be carried out
via the oil ller opening.
Warning
Rotating, pressurized and hot components,
DANGER OF INJURY!
7.2.1 Oil level check via oil ller opening
Warning
– The unit parts, oil and oil ller plug 1 may be
over 80°C/176°F; danger of burns!
Wear personal safety equipment!
– With hot oil, the oil level can be approx. 10 mm
higher than with cold oil shortly after discharg-
ing.
As a result, oil may escape when the oil ller
plug is opened at the maximum oil level. In
this case, close the oil ller plug again imme-
diately and carefully remove the oil which has
escaped.
Figure 7-1
Note
The screw cap of the oil ller neck is provided
with a safety hole on the side from which oil or air
escapes if there is any residual pressure in the
separating tank. Wait briey in this case.
• Switch off the system and secure it against
unauthorized switch-on.
• Wait for one minute at standstill.
• Screw off the screw plug 1 of the ller neck by
hand with the oil level depressurized.
• Check the oil level.
• If necessary, top up oil of the same oil type and
the same brand up to the maximum level.
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