Dilo SF6 - Failure List and Correction

Fault correction
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List of failure on the operating panel:
Error message Possible cause of error Correction
Incorrect direction of
rotation
Phase failure,
incorrect direction of rotation
Defective phase sequence relay
Check the power supply.
Change the position of the reversing
switch
Exchange the phase sequence relay
Vacuum compressor
pressure too high
Pressure upstream or downstream
from the vacuum pump too high
Reduce pressure as described under
item “Recovery of SF
6
–gas“
Vacuum pump pressure
too high
Pressure upstream from the
vacuum pump too high
Reduce pressure as described under
item “Recovery of SF
6
–gas“
Compressor pressure too
high
Ball valve (valve) on the storage
tank is closed
Ball valve pos. 202 is closed
Solenoid valves downstream from
the compressor do not open
Check the ball valve (valve) on the
storage tank
Check the solenoid valves
Motor protection circuit
breaker / Thermistor
switched off
Overcurrent of a component
Due to excess temperature the
thermistor has switched off
(red LED in the Thermistor lights
up)
Check the motor protection circuit
breaker
Check the temperature of the
compressor and let the compressor
cool down if necessary.
Check the Thermistor.
Sensor pos.301
interrupted
Defective pressure sensor pos.301
Cable is not connected.
Check the pressure sensor pos. 301
Check the sensor connection.
Sensor pos.302
interrupted
Defective pressure sensor pos.302
Cable is not connected
Check the pressure sensor pos. 302
Check the sensor connection.
Sensor pos.304
interrupted
Defective pressure sensor pos.304
Cable is not connected.
Check the pressure sensor pos. 304
Check the sensor connection.
Sensor pos.305
interrupted
Defective pressure sensor pos.305
Cable is not connected.
Check the pressure sensor pos. 305
Check the sensor connection.
Sensor pos.306
interrupted
Defective pressure sensor pos.306
Cable is not connected.
Check the pressure sensor pos. 306
Check the sensor connection.
Sensor pos.603
interrupted
Defective pressure sensor pos.603
Cable is not connected.
Check the pressure sensor pos. 603
Check the sensor connection.
Sensor pos.604
interrupted
Defective pressure sensor pos.604
Cable is not connected.
Check the pressure sensor pos. 604
Check the sensor connection.
Bottle sensor interrupted Defective DMS measuring
transducer.
Exchange the DMS measuring
transducer.
Lack of gas Storage tank is empty
Storage pressure < 2bar
Ball valve on the storage tank is
closed
Check the pressure in the storage
tank (fill the storage tank)
Check the position of the ball valve