GE Industrial Solutions GPS 4812_24 - Manual (Page 107)

Galaxy Power System 4812/24
Issue 9 Januray 2008 Troubleshooting Millennium Systems 13 - 13
Rectifier Minor Rectifier Fail ALM TA Thermal
alarm:
•Excessive
ambient
temperature
•Internal
rectifier
failure
1. Verify that there is
no obstruction of
the fan inlet.
2. Toggle the ON/
STBY switch into
the STBY position
and then back into
the ON position.
3. If the problem is
not corrected,
replace the rectifier.
Rectifier Minor Rectifier Fail ALM ICS
IP5
IP6
IP7 Internal
rectifier
failure 1. Place the ac circuit
breaker for the
rectifier in the OFF
position.
2. Remove the
rectifier from the
shelf.
3. Wait for 30 seconds
or until all front
panel display LEDs
have extinguished.
4. Replace the
rectifier.
5. Return the ac
breaker to the ON
position.
6. Place the rectifier
ON/STBY switch
into the ON
position.
7. If the problem is
not corrected,
replace the rectifier.
Rectifier Minor Rectifier Fail ALM FSE Fuse alarm:
•DC fuse open
•Internal
rectifier
failure
1. Toggle the ON/
STBY switch into
the STBY position
and then back into
the ON position.
2. If the problem is
not corrected,
replace the rectifier.
Table 13-E: Rectifier Related Alarms
(See Figures 12-6 and 12-8)
Controller
LED
Controller
Alarm
Status
Millennium
Controller Display
Rectifier
LED
Rectifier
Display
Possible
Problem(s)
Possible Solution(s)