Product description
2.4
Safety and monitoring devices
Page 20
BOGE Operating instructions for C 15 series screw compressors
Control of compressors
with frequency control
(C 15 F)
When the operating pressure psoll (target value) is exceeded the control be-
comes active and reduces the speed.
When the operating pressure p
soll
(target value) is dropped below the control
becomes active and increases the speed..
The settings for p
min
, p
max
and p
soll
(target value) are made by parameterization of
the FOCUS control..
The standard settings are:
p
max
– 4 psig = p
soll
p
max
– 6 psig = p
min
Short operating times
2.4 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:
Safety temperature
limiting device
The safety temperature limiting device switches off the compressor once the
maximum admissible final compression temperature has been reached. In
case the necessary minimum temperature to run the compressor is not guar-
anteed, the compressor does not start.
–
Rectify the fault.
–
Acknowledge fault by pressing
ENTER key
.
–
Switch on the compressor (
ON key
).
WARNING!
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.
WARNING: 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!
