User manual

Maintenance
Liebert
®
DS
™
132
13.0 MAINTENANCE
NOTICE
Risk of improper operation. Can cause damage to equipment.
Do not change Advanced Menu parameter settings in the Liebert iCOM without first getting
permission from Emerson Network Power Liebert Service.
Lowering this parameter to less than 100% will cause the coil to freeze on DX units, will
overheat the reheat components on any unit and cause condensation problems on any unit
equipped with a humidifier.
The Liebert DS product is a single component in the facility heat removal system. The system
includes air distribution (raised floors, duct systems), outdoor heat rejection (condensers, pumps,
drycoolers, cooling towers, piping, heat rejection fluid, ambient temperature, etc.) and indoor cooling
and humidity loads (equipment load, location, outside air infiltration). Proper application and
maintenance of the entire system is critical to the life and reliability of the Liebert DS.
• Good maintenance practices are essential to minimizing operation costs and maximizing product
life.
• Read and follow monthly and semi-annual maintenance schedules included in this manual. These
MINIMUM maintenance intervals may need to be more frequent based on site-specific conditions.
• See the Liebert iCOM user manual, SL-18835, for instructions on how to utilize the unit
controller to predict some service maintenance intervals.
• Emerson recommends the use of trained and authorized service personnel, extended service
contracts and factory-specified replacement parts. Contact your local Emerson representative.
!
WARNING
Risk of electric shock. Can cause injury or death.
Disconnect local and remote power supplies before working within.
Before proceeding with installation, read all instructions, verify that all the parts are included
and check the nameplate to be sure the voltage matches available utility power.
Follow all local codes.
!
WARNING
Risk of improper wiring, piping, moving, lifting and handling. Can cause equipment damage,
injury or death.
Only qualified service personnel should work on this equipment.
Read all installation, operating and safety instructions before proceeding.
Read and follow all warnings in this manual