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I
2-2
NSTALLATION
REFRIGERATION
(Self Contained Models Continued)
SHM-3 self contained merchandisers use
R-404a refrigerant. SHM-4 self contained
merchandisers use R-134a refrigerant. All
models have a hermetic compressor. The
systems employ capillary tubes for refrigerant
flow control. The capillary tube is soldered to
the suction line pull-out coil for proper heat
exchange. If the capillary should become
plugged or damaged, it is best to replace the
heat exchanger.
Refrigeration lines are under pressure.
Refrigerant must be recovered before
attempting any connection or repair.
P/N 0515258_E
WATER OUTLET AND WATER SEAL
The condensate water outlet is located in the
center of the merchandiser. The outlet has a
factory installed, external water seal.
For self contained models, this water seal
drains into the condensate evaporator pan
located beneath the merchandiser. The pan
uses a thermistor that senses water in the pan
and adjusts the amount of heat required to
evaporate the water. Ensure the drain hose is
properly trapped, and the drain area is not
clogged.
NOTE: All lower base panels must be in place
when the refrigerator is operating. If not, air-
flow from the condenser will be directed over
the evaporator pan and defrost water in the
pan may overflow.
When brazing pipes, be sure to use the
insulation blanket shipped with the
merchandiser to prevent damage to the
U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com
metal merchandiser bottom.
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