Liebert 1500 - Manual (Page 46)

40 Maintenance
5.3 Addition / Replacement Procedures
5.3.1 Addition or Replacement of a Rectifier
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.
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
load Incorrect float or equalize adjustment on one of the rectifiers
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
!
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.
Table 39 Fault diagnosis
Fault symptom Possible causes