Service manual

SiUS28-902_a Field Setting
Test Operation 64
3.3.5 Check Operation
To prevent any trouble in the period of installation at site, the system is provided with a test
operation mode enabling checks for incorrect wiring, stop valve left closed, and automatic
determination of of piping length.
Unit stopping
Press the TEST button (BS4)
for 5 seconds.
10 sec to 10 minutes
LED display (H1P~H7P) (
k:ON l:BLINK h:OFF)
hhkhhhh
hlhhhhk
Pressure equalizing
Step 1
20 sec to 2 minutes
10 minutes
To 30 seconds
hlhhhkh
Cooling start controlStep 2
hlhhhkk
hlhhkkk
hlhkhhh
hlkhhhh
Stability waiting operationStep 3
Pump down residual operation Step 7
5 minutes
Standby for restarting
Completion
Step 8
• Stop valve close check
• Wrong wiring check
• Piping length check
3 minutes
hlhhkhh
hlhhkhk
hlhhkkh
Judgement function
Step4~6
CHECK OPERATION FUNCTION