Conair MPA User Manual
The compressor may be located in the compressor electrical
enclosure or in the main chiller electrical enclosure, depend-
ing on the model of your chiller.
enclosure or in the main chiller electrical enclosure, depend-
ing on the model of your chiller.
The compressor contactor should be replaced if:
● You have checked the amp draw on each of the three-phase
● You have checked the amp draw on each of the three-phase
legs and discovered a voltage imbalance greater than 10%.
● You have checked the continuity and found that ohms at
the coil equal zero.
To replace the compressor contactor:
Disconnect and lockout the main power.
Open the electrical enclosure.
Turn the screw on
the front panel counterclockwise to open.
Disconnect the wires from the compressor con-
tactor contactor.
tactor contactor.
Label the wires to ensure you can
connect them correctly to the new contactor.
Remove and discard the old contactor.
Reverse this procedure to install the new con-
tactor.
tactor.
Make sure the wires are connected correctly
.
microKool Portable Chillers
UGH004/0999
6-16
T
ROUBLESHOOTING
1
2
3
4
5
IMPORTANT:
Always
refer to the wiring dia-
grams that came with
your chiller to locate spe-
cific electrical compo-
nents. Illustrations in the
User Guide are intended
to be representative only.
grams that came with
your chiller to locate spe-
cific electrical compo-
nents. Illustrations in the
User Guide are intended
to be representative only.
WARNING:
Electrical Shock Hazard
Only qualified service personnel who have been
trained on electrical testing and the procedures for
avoiding the hazards should diagnose or correct prob-
lems that require opening the unit with power on.
avoiding the hazards should diagnose or correct prob-
lems that require opening the unit with power on.
R
EPLACING THE
C
OMPRESSOR
C
ONTACTOR