Liebert DS user manual Required Equipment, Disassembly-Downflow Units

Disassembling the Liebert DS for Transport

6.0DISASSEMBLING THE LIEBERT DS FOR TRANSPORT

The Liebert DS has a modular frame construction that allows separating the unit into three sections. Each of these sections is more easily maneuvered through tight spaces or placed in small elevators.

A qualified service technician with the required tools and recommended assistance can disassemble an air-cooled unit in about four hours, assuming refrigerant evacuation is not required.

This procedure requires four or more people for lifting the filter and electric box assembly on down- flow units and for lifting the blower and electric box assembly on upflow units.

! WARNING

Risk of explosive discharge from high-pressure refrigerant. Can cause injury or death.

This unit contains fluids and/or gases under high pressure. Relieve pressure before working with piping, compressors or other internal components.

! WARNING

Risk of top heavy unit falling over. Improper handling can cause equipment damage, injury, or death.

Read all instructions before attempting to move or lift unit. Installation and service of this equipment should be done only by properly trained and qualified personnel who have been specially trained in the installation of air conditioning equipment.

! CAUTION

Risk of sharp edges and heavy parts. Can cause personal injury.

Only properly trained and qualified personnel wearing appropriate safety headgear, gloves, shoes and glasses should attempt to move, lift, remove packaging from or prepare unit for installation.

NOTICE

Disassembling this unit requires substantial work, including reclaiming refrigerant and charging the unit, cutting and brazing refrigerant lines, cutting and brazing water lines, disconnecting and reconnecting electrical lines and moving heavy, bulky equipment. One member of the crew disassembling the unit must be qualified in wiring, brazing and refrigeration.

Improperly disassembling or reassembling the Liebert DS may affect warranty.

6.1Required Equipment

•Piano jacks

•Stepladder for downflow units

•Refrigeration tools

6.2Disassembly—Downflow Units

For detailed views of downflow units, see Figures 37 through 45.

1.Remove the unit from its shipping skid before beginning (refer to 5.2 - Unpacking the Unit).

2.Remove all panels except the top front accent.

3.Remove all filters. This allows access to the screws for metal plate blocking off the top coil and removal of the filter plate.

4.All wires are hot-stamped and all circuit board connectors are lettered to ease connection. Some cable ties must be cut and replaced. Refer to the unit’s wiring schematic on the unit’s deadfront panel for details.

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