Series 1 Portable Chillers, PLC Control
UGH017/0500
5-8
M
AINTENANCE
C
HECKING
E
LECTRICAL
C
ONNECTIONS
Be sure the main power is disconnected
and the chiller is locked out. Always disconnect and lock-
out the main power source before opening the unit for
servicing.
Open the electrical enclosure.
Inspect all wires and connections.
Look for loose wires, burned contacts, and signs of over-
heated wires. Compare the PLC wiring to the wiring dia-
grams you received with your chiller. Have a qualified
electrician make any necessary repairs or replacements.
Close the electrical enclosure door.
Inspect the exterior power cords.
Cords should not be crimped, exposed, or rubbing against
the frame. If the main power cord runs along the floor,
make sure it is positioned where it could not rest in pool-
ing water or could not be run over and cut by wheels or
casters.
WARNING: Electrical hazard
Before performing any work on this item, dis-
connect and lock out electrical power sources to
prevent injury from unexpected energization or
startup.
WARNING: Improper installation, oper-
ation, or servicing may result in
equipment damage or personal injury.
This equipment should only be installed, adjust-
ed, and serviced by qualified technical person-
nel who are familiar with the construction, oper-
ation, and potential hazards of this type of
machine.
All wiring, disconnects, and fuses should be
installed by qualified electrical technicians in
accordance with electrical codes in your region.
1
2
3
4
5
Always refer to the
wiring diagrams you
received with your chiller
to locate specific electri-
cal components.
