RATIO.pm6.5 - USA
Page 1.22
RATIO
BOGE – RATIO compressor control for screw compressors
Fault messages of the control system
The control unit registers an Error, the compressor is immediately and with-
out an idling phase – automatically shutdown, the error Relay drops and on
the right next to the actual pressure value there blinks a number next to the
red indicator lamp:
– the blinking number indicates the registered cause (see also message
key table under error messages).
Display the message – e.g. by pressing the
i
-key. Press
↵
-key to cancel
the display and acknowledge the message. The main display appears, if the
cause for the fault was rectified.
FAULT
Rectification
Possible cause
Excessive final
1
compression
temperature
Ambient temperature too
high
Cooling unit soiled
Insufficient cooling air
quantity
Insufficient oil quantity
Temperature sensor defec-
tive or wire break
Employ suitable measures to improve the air inlet
and ventilation in the installation room
Clean cooling unit externally
Keep air inlet opening to the compressor clean;
check to ensure that any existing cooling air duct
systems are adequatly dimensioned
Top up oil
Replace temperature sensor or repair the wire
break
Frequency
13
converter /
motor
Motor overload!
Power input too high
caused by undervoltage
Insufficient cooling
of motor /
frequency converter
Motor soiled
Excessive system pressure
Network pressure P
soll
/ P
max
too high
PTC resistor defective or
aged
Ensure correct voltage conditions:
Constant voltage in accordance with IEC 38
Ensure better cooling of motor / frequency con-
verter: improve ventilation of the installation room;
Clean cooling unit and supply air filter
Clean motor cooling air supply
Exchange oil separator cartridge
Reduce line pressure to prevent compr. building up
a compr. load above approved max. pressure
Overhaul motor
Compressed air
0
pre-processing
(option)
External unit of the
compressed air treatment
signals malfunction
Service or repair compressed air treatment unit
Note:
This message does not lead to switch-off the com-
pressor and the standard configuration
Fault
red
Acknowledge
messages
RATIO
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