7. Commissioning
34
7.2 Routine commissioning
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.
For routine commissioning, proceed as follows:
• Check oil level in the pressure reservoir (see also
chapter 6.5).
• Open shut-off valves between the screw
compressor, reservoir and pipe.
• Switch on the power supply master switch.
• Once the power supply has been switched on, the
POWER LOSS fault appears. This fault must be
acknowledged using the key (Fig. 16).
• Press START button
I
(Fig. 16).
• To switch off the compressor in the usual way use
the STOP button
(Fig. 16) and not the emergency
STOP button. After shutdown the compressor has a
run on time of 30 seconds (soft-stop).
Start-up protection of the electric motor
The screw compressor unit will not start up if the final
compression pressure is more than 0,8 bar / 11, 6 PSI.
Temperature start-up protection
The screw compressor unit will not start up if the ambi-
ent temperature is lower than + 1 °C/33.8 °F.
7.3 Commissioning after malfunction
Important
Do not switch the screw compressor on repeatedly
without having rectified the malfunction, since this
may cause considerable damage to the machine.
Re-start after an automatic shutdown due to a
malfunction as follows:
• Turn master switch off.
• Eliminate fault.
• Turn master switch on.
• Press acknowledgement push-button (Fig. 16)
• Start the screw compressor unit by pressing the
START button
I
(Fig. 16).
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