4
5
6
A
B
A
B
11
EN
14. Preparations before first use
Before using the compressor for the first time, it must be ensured that
all the fastenings securing the compressor for transportation have been
removed. Ensure that the compressed air lines are connected correctly.
The compressor must be connected to the mains supply in the proper
manner. Switch on the compressor at the pressure switch by rotating the
switch to position “1”.
Safety valve
The safety valve is set at 10 bar. When the compressor is ope-
rated for the first time, the safety valve must be checked.
The safety valve may not be used to vent the pressure tank, as
this may impair the function of the safety valve.
Adjusting the pressure switch
4
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5
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6
The pressure switch is factory-set. If necessary,
the working pressure of the compressor may be altered at the pressure
switch.
These tasks may only be carried out by authorised technicians.
During this work the protective cover of the pressure switch
must be removed.
The adjustment can only be carried out while the unit is in use.
If problems develop with the cut-in and cut-out pressure, refer to the
following:
Screws A: Minimum pressure adjustment (cut-in) – both of them have
to be regulated at the same level. Note to regulate Max pressure, only
regulate screws A (min. pressure) because the differential pressure
is fixed.
Screw B: Differential min-max pressure adjustment (cut-out) –
actually regulated at 2 bar.
The cut-in pressure is set by even adjustment of the two screws A.
Turn clockwise to increase the switch-on and anticlockwise to reduce
it.
The cut-out pressure is set by means of differential screw B (cut-in
pr differential = cut-out pressure). Turn clockwise to increase
the differential.
Preparations before first use
Technicians
