Table 39 Fault diagnosis
Fault symptom | Possible causes |
|
|
LOP lamp lit | Loss of one or more phases in the AC supply |
|
|
HVSD lamp lit | High voltage shutdown condition initiated by the controller |
|
|
LVD lamp lit | Low voltage disconnect condition initiated by the controller |
|
|
AUX 1 lamp lit | User defined alarm condition |
| When a Battery Disconnect Unit is present, this lamp will indicate that a |
| battery disconnect alarm is ongoing. |
|
|
AUX 2 lamp lit | User defined alarm condition |
|
|
BOD lamp lit | Low discharge voltage condition |
| Incorrect BOD level adjustment |
|
|
ACO lamp lit | ACO switch has been operated during an alarm condition which is still |
| ongoing |
|
|
EQL lamp lit | The equalize function has been activated |
|
|
Rectifiers are not sharing the | Incorrect float or equalize adjustment on one of the rectifiers |
load | Sense leads opened on one rectifier |
| Share mode incorrectly set |
|
|
Meter display is OFF | Open meter fuse |
| Meter and display failure |
| Meter and display rotary switch in the OFF position |
|
|
5.3Addition / Replacement Procedures
5.3.1Addition or Replacement of a Rectifier
! WARNING
PRECAUTIONS SHALL BE TAKEN TO AVOID SERVICE INTERRUPTIONS
WHEN INSTALLING A RECTIFIER, THE FLOAT AND EQUALIZE VOLTAGES MUST BE SET ACCORDING TO THE TYPE OF BATTERIES USED WITH THE SYSTEM. FAILURE TO SET THESE VOLTAGES PROPERLY MAY RESULT IN BATTERY UNDERCHARGING OR OVERCHARGING AND/OR BATTERY DAMAGE.
! WARNING
PROTECTING PERSONNEL AGAINST ELECTRICAL SHOCKS
INPUT VOLTAGES TO THE RECTIFIERS ARE AT A DANGEROUS LEVEL. ENSURE THAT THE CIRCUIT BREAKERS ARE LOCKED IN THE OFF POSITION AT THE AC SERVICE PANEL BEFORE ATTEMPTING TO WORK ON THE RECTIFIERS. DANGEROUS VOLTAGES MAY STILL BE PRESENT AT THE TERMINALS EVEN IF THE RECTIFIERS ARE OFF. USE A VOLTMETER TO VERIFY FOR THE PRESENCE OF SUCH VOLTAGES. DO NOT SWITCH CIRCUIT BREAKERS TO ON UNTIL INSTRUCTED TO DO SO IN THE APPROPRIATE PROCEDURE.
Add a rectifier as described in the following procedure for a Helios Rectifier 100/48 or as in the Adding a Helios Rectifier 200I/48 or 200E/48 procedure, whichever is applicable.
40 Maintenance