Monogram ZIS42 - Defrost System Overview; Defrost Control Servicing

MONOGRAM REFRIGERATORS
REFRIGERATION SYSTEM
The refrigeration system, not removable as
a separate unit, consists of:
•
a reciprocating type compressor,
•
a
fin-and-tube type condenser,
•
a
condenser loop,
•
a dryer,
•
a fin-and-tube type
evaporator
and
•
a
heat exchanger
Refrigerant
Flow
The compressor discharges hot high pressure
refrigerant gas into the condenser. The
condenser is cooled by a fan and the cooled gas
is converted to a high pressure liquid. The high
pressure
liquid flows through the dryer where
any moisture is removed. The warm dry liquid
enters the condenser loop, passing first down
the mullion side of the freezer compartment,
across the bottom, then
up the left side and
back to the unit compartment and enters the
capillary. The capillary meters the flow of
liquid refrigerant entering the evaporator. The
liquid refrigerant boils and vaporizes inside
the evaporator, picking
up heat from inside the
cabinet. Refrigerant vapor
is then returned to
the compressor through the suction tube.
The
heat exchanger provides for warming of the
suction tube
by the capillary and cooling of the
capillary by the suction tube.
- 5 -
ZIS MODELS
SUCTION
LINE
~
DISCHARGE
TUBE
/
.. ~~'II
..
~==~
CONDENSER~
CAPILLARY t
~CONDENSER
/' LOOP
DRYER/