GEA Grasso Manual page 118

Grasso
Refrigeration Division
6.3 Description and diagnosis of alarm messages
Display message / Explanation
004 Alarm
Evaporator
refrigerant level
too high
This alarm is activated if the input
signal E 1.1 'Separator liquid level'
equals 0.
005 Alarm
Refrigerant leak
detected
This alarm is activated if the input
signal E 1.2 'Gas sensor' equals 0.
009 Alarm
Wire failure
oil separator
temperatur
The GSC has detected a loose wire
or short circuit in the oil separator
temperature sensor.
010 Alarm
Wire failure
external temperature
The GSC has detected a loose wire
or short circuit in the external
temperature sensor.
011 Alarm
Wire failure
external set point
The GSC has detected a loose wire
or short circuit in the external set
point sensor.
Kap.6 - 6
Possible cause of the alarm
The level in the refrigerant
separator is too high.
The terminal connections have
become loose or a wire is broken.
The level sensor is defective.
The digital input module defective.
Gas alarm system is active.
The terminal connections have
become loose or a wire is broken.
The digital input module defective.
The terminal connections have
become loose or a wire is broken.
There is a short circuit in the sensor
wiring.
The sensor is defective.
The analogue input module
defective.
The terminal connections have
become loose or a wire is broken.
There is a short circuit in the sensor
wiring.
The sensor is defective.
The analogue input module
defective.
The terminal connections have
become loose or a wire is broken.
There is a short circuit in the sensor
wiring.
The sensor is defective.
The analogue input module
defective.
638660E_chapter6.doc
GRASSO SYSTEM CONTROL
Alarm clearance
Reduce the level in the refrigerant
separator.
Check the terminal connections for
tightness and continuity of wiring.
Replace the level sensor.
Replace the digital input module.
Reset the gas alarm system.
Check the terminal connections for
tightness and continuity of wiring.
Replace the digital input module.
Check the terminal connections for
tightness and continuity of wiring.
Check where the short circuit has
occured and rectify.
Replace the sensor.
Replace the analogue input module.
Check the terminal connections for
tightness and continuity of wiring.
Check where the short circuit has
occured and rectify.
Replace the sensor.
Replace the analogue input module.
Check the terminal connections for
tightness and continuity of wiring.
Check where the short circuit has
occured and rectify.
Replace the sensor.
Replace the analogue input module.
01.2003/0