Produkt.pm6.5 - USA
Page 2.11
Product description
BOGE Operating instructions for S 40-2...S 341 / SF 40-2...SF 220 series screw compressors
General
Safety temperature
limiting device
Safety valve
Monitoring the drive
and fan motor
Rotational direction
monitoring
Safety pressure switch
(option)
System pressure
build-up (option)
The safety devices guarantee a high degree of operational safety, in connec-
tion with the BOGE monitoring system.
When one of the safety devices responds, the control system reacts as follows:
– The compressor is immediately switched off.
– A flashing fault number in the left field of the display indicates the cause
of the fault.
DANGER!
Do not operate the compressor without built-in safety devices.
Do not dismantle the safety devices or put them out of operation.
Safety temperature limiting device switches off the compressor once the
maximum admissible final compression temperature has been reached.
The compressor does not switch on when dropping below the minimum
temperature.
– Switch off the compressor (OFF button). Fault is acknowledged.
– Rectify the fault.
– Switch on the compressor (ON button).
Safety valve on the compressed air/oil receiver prevents the maximum
admissible pressure being exceeded. When the maximum pressure is ex-
ceeded (e.g. incorrect setting of the operating pressure switch), the entire
delivery volume of the compressor is ejected.
The following monitoring devices are standard for BOGE control systems:
The drive motor is monitored by PTC resistors.
The fan motor is monitored by overcurrent/overload release units.
The pressure switch checks the rotational direction of the drive motor each
time the system starts up.
The pressure switch for the rotational direction is placed next to the operat-
ing pressure switch.
The safety pressure switch prevents the maximum admissible system pres-
sure being exceeded. The switch-off pressure is below the response pres-
sure of the safety valve.
The system pressure build-up unit monitors the system pressure build-up
when the compressor starts up.
2.5 Safety and monitoring devices
1
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