100 Operation
Step 3. If maintenance is requiredi nthe area of the SCC controls or the motorized system circuitbreakers (UPS
Outputand SBB), transfer the load to the Maintenance Bypass, if available.
a. Closethe Maintenance BypassBreaker (MBB).
b. Openthe Maintenance Isolation Breaker (MIB).
c. Openthe BypassInput Breaker (BIB).
Beforeperforming any maintenance on your Liebert Series 600T UPS, observe ALL of the WARNINGS in
4.0- Maintenance.
CAUTION
Ifyour installation does not include a Maintenance Bypass,power must still be
isolated from both sides of the UPS circuit brea kers if maintenance is required.
Thiswill result in loss of power to the critical load. Perform an orderly load
shutdown before isolating power.
WARNING
LETHAL VOLTAGESARE PRESENT WITHIN THIS UNIT EVEN WHEN
ITIS NOT ON OR WHEN UTILITYIS NOT BEING SUPPLIED. OBSERVE
ALL CAUTIONSAND WARNINGS IN THIS MANUAL. FAILURE TOD O
SO COULD RESULTIN SERIOUS INJURY OR DEATH.DO NOT WORK
ON OR OPERATE THIS EQUIPMENT UNLESS YOU ARE FULLY
QUALIFIEDTO DO SO!! NEVER WORK ALONE.
DISCONTINUED
PROD U C T