Liebert 1500 User Manual

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

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