REV : 3
REV DATE : 3/17
DPN000277
Page :1 /1
Form No.: DPN001040_REV4
ELECTRICAL FIELD CONNECTIONS
LIEBERT DRYCOOLER
FAN SPEED CONTROL
70
71
Factory wired to 24V
Class 2 control circuit
Factory wired to components
on electric panel
Electric service connection
to fuse block (factory wired)
Electric service connection
terminals for field wiring
Factory installed
disconnect switch
Note:
Refer to specification sheet for
full load amp and wire size
amp ratings
Control interlock field supplied
Class 2 wiring to interlock
drycooler 24V controls to
Liebert room unit. 7/8" (22mm)
diameter hole provided in
bottom of electric box
Electric service connection terminals
for power supply to pumps when
pump controls are factory supplied.
7/8" (22mm) diameter knockouts
provided in bottom of electric box.
Three terminals for three phase
pump option only
Earth ground bar (50Hz).
Connection terminals with factory
ground from each high voltage
component for field supplied
earth grounding wire.
PUMP FUSES & OVERLOAD
HEATERS (SHIPPED WITH
STANDARD PUMP PACKAGES)
ARE TO BE FIELD INSTALLED
IN PUMP FUSE BLOCK(S) AND
STARTER(S).
Earth ground connection (60Hz).
Connection terminal for field
supplied earth grounding wire
Electric service entrance.
A 7/8" (22mm) diameter hole
in a 1-1/8" (29mm) knockout
provided in bottom of electric box
Electric service single phase
not by Liebert. Three phase
not by Liebert (for three phase
pump option only)
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