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7.1
First commissioning
Important
Although every CompAir screw compressor has
been subjected to a test run at the factory and has
again been thoroughly inspected before shipment,
damage during shipment cannot be excluded. For
this reason, every screw compressor should be
checked once again for damage before being com-
missioned. In addition, it should be observed during
the first operating hours. The screw compressor
unit is completely factory-assembled. It can be di-
rectly connected to the compressed air mains by
means of a flexible connection.
If the screw compressor is newly connected to a
power supply, check the direction of rotation of the
drive motor !
With a wrong direction of rotation, shut down the
unit immediately by actuating the emergency shut-
down, otherwise the compressor might suffer seri-
ous damage.
The access panels may temporarily be opened for
checking the direction of rotation (wear ear protec-
tors).
Moreover, the following points must be taken into
account :
• Fasteners used for securing the unit during trans-
portation have to be removed prior to com-
missioning.
• Before commissioning, panels and doors should
be realigned, if required.
• Check and, if necessary, correct the pre-set valu-
es at the Kondensomat (option).
• Re-tighten all connecting terminals of the electri-
cal control before commissioning.
• Check the oil levels in the pressure reservoir be-
fore each commissioning.
• Open the isolator valves between the screw com-
pressor, reservoir and pipe,
• Operate main switch.
• Before each commissioning, check the safety val-
ve (fig. 15) for function by turning the knurled cap
at the safety valve (at operating pressure).
• When switching the power supply on, all of the
LEDs and all segments of the LCD displays will li-
ght up for a display test.
• For testing purposes, all LEDs and segments on
the operating panel light up.
Danger
.
Make sure before commissioning that nobody is in
the danger zone of the motor/screw compressor.
Only operate the screw compressor with closed
access panels.
The safety valve can be hot as a result of prece-
ding operation. A functional check must only be car-
ried out at operating pressure. Be careful with esca-
ping air (danger of burning and scalding).
• Press the OFF-key for unlocking.
• Press the ON-key,
the ON-key lights up >>green<< in order to show
that the screw compressor unit is in the automatic
operating mode.
Note
Before first commissioning or when re-commissioning
after maintenance of the water-cooled units, the air
cooler must be bled via the bleed screw.
Fig. 15
Danger
.
Make sure before commissioning that nobody is in
the danger zone of the motor/screw compressor.
After completion of work : Verify that all safety
devices have been refitted and that all tools have
been removed.
Only operate the screw compressor unit with
closed access panels.
Before each commissioning, check the safety
valve (fig. 15) for function by turning the knurled cap
at the safety valve (at operating pressure). The safe-
ty valve can be hot as a result of preceding opera-
tion. A functional check must only be carried out at
operating pressure. Be careful with escaping air
(danger of burning and scalding).
7. Commissioning
7.2
Routine commissioning
Note
The condensate separator (option) and the conden-
sate drain (option) have to be installed by the customer.
Before first commissioning or when re-commissioning
after maintenance of the water-cooled units, the air
cooler must be bled via the bleed screw.
Before each commissioning of the screw compressor
follow the steps below :
• Check the oil levels in the pressure reservoir.
• Open the isolator valves between the screw com-
pressor, reservoir and pipework.
