GEA Grasso - Page 122

Grasso
Refri
g
eration Division
GRASSO SYSTEM CONTROL
Kap.6 - 10 638660E_chapter6.doc 01.2003/0
Display message / Explanation Possible cause of the alarm Alarm clearance
The discharge pressure is too high. Remove cause of high discharge
pressure in the refrigeration plant.
060 Alarm (01)
Discharge
pressure
too high
‘Pdis hi alarm’ limit is set too low. Change ‘Pdis hi alarm’ limit to a
suitable value.
The sensor has not been correctly
calibrated in the configuration
menu.
Enter the correct calibration value.This alarm is activated if the
discharge pressure exceeds the ’Pdis
hi alarm’ limit value.
The sensor is defective. Replace the sensor.
The terminal connections have
become loose or a wire is broken.
Check the terminal connections for
tightness and continuity of wiring.
061 Alarm (01)
Wire failure
discharge pressure
There is a short circuit in the sensor
wiring.
Check where the short circuit has
occured and rectify.
The sensor is defective. Replace the sensor.The GSC has detected a loose wire
or short circuit in the discharge
pressure sensor.
The analogue input module
defective.
Replace the analogue input module.
The intermediate pressure is too
high.
Remove cause of high intermediate
pressure in the refrigeration plant.
062 Alarm (01)
Intermediate
pressure
too high
‘Pint hi alm n1/2’ limit is set too
low.
Change ‘Pint hi alm n1/2’ limit to a
suitable value.
The sensor has not been correctly
calibrated in the configuration
menu.
Enter the correct calibration value.This alarm is activated if the
intermediate pressure exceeds the
’Pint hi alm n1/2’ limit value.
Note: the actual motor speed (n) is
of relevance for which limit is active.
The sensor is defective. Replace the sensor.
The terminal connections have
become loose or a wire is broken.
Check the terminal connections for
tightness and continuity of wiring.
063 Alarm (01)
Wire failure
intermediate pressure
There is a short circuit in the sensor
wiring.
Check where the short circuit has
occured and rectify.
The sensor is defective. Replace the sensor.The GSC has detected a loose wire
or short circuit in the intermediate
pressure sensor.
The analogue input module
defective.
Replace the analogue input module.
The terminal connections have
become loose or a wire is broken.
Check the terminal connections for
tightness and continuity of wiring.
064 Alarm (01)
Wire failure
oil pressure
There is a short circuit in the sensor
wiring.
Check where the short circuit has
occured and rectify.
The sensor is defective. Replace the sensor.The GSC has detected a loose wire
or short circuit in the oil pressure
sensor.
The analogue input module
defective.
Replace the analogue input module.