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Important Safety Instructions
Liebert
®
Challenger 3000
™
2
NOTICE
Risk of leaking water/glycol. Can cause equipment and building damage.
This unit requires a water/glycol. drain connection. It may also require an external
water/glycol supply to operate.
Improper installation, application and service practice can result in water/glycol leakage from
the unit. Water/glycol leakage can result in severe property damage and loss of critical data
center equipment.
Do not locate unit directly above any equipment that could sustain water damage.
Emerson recommends installing monitored leak detection equipment for unit and
water/glycol supply lines.
NOTICE
Risk of a leaking coil due to freezing and/or corrosion. Can cause equipment and building
damage.
Cooling coils and piping systems that are connected to open cooling towers or other open
water/glycol systems are at high risk of freezing and premature corrosion. Fluids in these
systems must contain the proper antifreeze and inhibitors to prevent freezing and premature
coil corrosion. The water or water/glycol solution must be analyzed by a competent water
treatment specialist before startup to establish the inhibitor requirement. The water or
water/glycol solution must be analyzed every six months to determine the pattern of inhibitor
depletion. The complexity of water-caused problems and their correction makes it important
to obtain the advice of a water treatment specialist and follow a regularly scheduled
maintenance program.
!
WARNING
Risk of improper handling of top heavy unit. Can cause unit to fall over, resulting in
equipment damage, serious injury or death.
Read all instructions before attempting to move, lift, remove packaging from or preparing
unit for installation.
!
WARNING
Risk of high-speed moving parts. Can cause injury or death.
Disconnect all local and remote electric power supplies before working in the unit.
Do not operate upflow units without installing a plenum, ductwork or guard over the blower
opening(s) on the top surface of the unit cabinet for protection from rotating blower wheel(s).
!
CAUTION
Risk of contact with hot surfaces. Can cause injury.
The compressor, refrigerant discharge lines, humidifiers and reheats are extremely hot
during unit operation. Allow sufficient time for them to cool before working within the unit
cabinet. Use extreme caution and wear protective gloves and arm protection when working on
or near hot compressors, discharge lines, humidifiers and reheats.
!
CAUTION
Risk of sharp edges, splinters and exposed fasteners. Can cause injury.
Only properly trained and qualified personnel wearing appropriate safety headgear, gloves,
shoes and glasses should attempt to move the unit, lift it, remove packaging from or prepare
the unit for installation.