Individual Indication For Activation Of Protection Device - Hitachi RCUE40AG2 Service Manual

Troubleshooting
Automatic operation device

The value of automatic operation device is set as follows:
Relay for only
starting control

NOTES:
It should be normally over 3 min.
1.
In all chiller units there is a timer which prevents compressors starting at the same time.
2.

5.1.4. Individual indication for activation of protection device

Indication in the segment

Status of unit and activation of the different protection devices are indicated on the display. This indication
helps to make a diagnosis about the unit, indicating if it is running well, and it can help to solve different
inconvenients on the system.
Indication on the segment at normal operation (standard menu display) is as follows:
Segment indication abnormal
    
~
 
    
~
    
~
    
~
    
~
    
~
At Alarm
    
~
    
~

NOTES:
C1~C5 means No of cycle. (C1: Cycle 1)
−
Number of cycle whose manual set switch is ON is indicated alternately.
−
It is a state from the output of pump operation signal to the confi rmation of pump interlock. In case that
−
pump interlock is confi rmed immediately, it is possible that the indication is not checked visually since the
indication time is too short.
pag. 97
SMGB0003 rev.0 - 01/2007
Item (unit)
Time guard Min
-Δ switch Sec
Staring unload Sec
Sequential
Min
starting (Note 2)
Contents
code
Power ON
Wait for pump feed
 
back
Procedure of ex.
valve zero reset
After pump feed back
At cooling operation
At heating operation
At activation of
current limit
At thermo OFF
At stop operation
Setting value
Variable: 30 sec ~ 10 min
(standard value: 3 min) (Note 1)
5
30
1
No. of cycle
Remarks
Electron control
State
5 5