Product description
2.4
Control devices
Page 14
BOGE Operating instructions for C 10 L...C 20 L series screw compressors
Short operating times
2.4 Control devices
Operating pressure
sensor
The operating pressure sensor allows controlled operation of the compressors
within the set switching limits.
Switch-on pressure p
min
If the supply pressure drops to the set switch-on pressure p
min
, the compressor
switches on.
Switch-off pressure p
max
If the supply pressure increases to the switch-off pressure p
max
, the compres-
sor either switches off (intermittent operation) or switches to idling operation
(continuous operation).
2.5 Safety and monitoring devices
General
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.
The following monitoring devices are standard for BOGE control systems:
Attention!
During short operating times, the compressor does not reach its operating
temperature. It operates below the dew point. The generated condensate
mixes with the oil. The lubricating ability of the oil is reduced. This leads to
damage on the air end.
It is of utmost importance to consult BOGE, if you operate your system with
short operating times.
Caution: Risk of injury!
Do not operate the compressor without built-in safety devices!
Do not dismantle the safety devices or put them out of operation!
