Gardner Denver L Series, Original User And Service Manual, Page: 43 / 60

13-25-639 v00 Page 42
WARNING
DANGER
10.3 Maintenance and inspection
schedule
Intervals are valid for normal industrial environments
and operating conditions. If there is some uncertainty,
set the oil change interval by performing oil analysis.
In the case of a very dirty atmosphere, the cleaning
intervals have to be shortened as required.
For order numbers see the spare parts list.
CAUTION
Some parts of the system will still be
pressurized after the system has been
switched off. Small parts propelled at high
speed by compressed air can penetrate the
skin or destroy an eye.
Only perform checks and maintenance after
observing the following:

Press the STOP button on the control
panel and wait until the screw
compressor comes to a stop and the
screw compressor unit is depressurized.

The pressure gauge shows no more than
< 4.4 PSI.

Shortly after shutting off the screw
compressor unit a small residual
pressure may remain.

Therefore, before any maintenance work,
the screw compressor unit must be
relieved by slowly opening the screw
plug (oil filling opening) with integrated
air vent slots.

Set the on-
site main switch to “0” (OFF)
and secure it against being switched on.
High voltage
– Hazard of shock, burn, or
death

Be careful with electricity: only work on
screw compressors which are not
powered.

Only for L90RS-L132RS: There is a risk
of electric shock from charged
capacitors! Disconnect the system from
the mains and wait 10 minutes before
touching electrical components. The
power capacitors need this time to
discharge.
Burn hazard
– Hot surfaces

Be careful of the hot surfaces of machine
parts when carrying out checks, making
settings and doing maintenance.