Filter
Top Products
VII. c - COMPONENT FUNCTION:
VII. ELECTRICAL OPERATION
-15-
VII. d - INSTALLATION OF THE SENSORS:
Compressor: Pumps refrigerant thru refrigeration system components and
compresses the low pressure vapor into high pressure vapor.
Condenser Fan: Draws air across condenser coil to aid in removing heat from the
refrigerant andmoves air across compressor to aid in cooling the
compressor.
Evaporator Fan: Draws air from the cabinet and pulls the air thru the evaporator coil.
Start Capacitor: Stores electrical charge which helps start the compressor motor.
Run Capacitor: Helps keep the compressor motor running after starting.
Microprocessor Control: Performs the functions of the 1) defrost timer, 2) high limit switch,
3) thermometer and 4) thermostat.
Drawer Perimeter Heater: Heats drawer opening to prevent condensation from forming.
Contactor Relay: Controls voltage to compressor motors.
There are two sensors used inside the
cabinet. The first one is the Cabinet Sensor
that is used to cycle the compressor on and
off at the correct temperature. The cabinet
sensor is mounted between the two coils
just below the top of the cabinet thru the
1/2” holes in the back wall and the tip should
be 1” inside the cabinet. Refer to the
drawing below. The part number for the
Cabinet Sensor is 337-60405-03.
The third sensor used is a Liquid Line
Sensor. This sensor is to be installed on
the liquid line as it comes out of the
condenser coil. The part number for this
sensor is 337-60407-01.
The Evaporator Coil Sensor is to be mounted
in the evaporator, in the center of the coil
and fully inserted into the coil until only the
wire is visible and then pinch the fins around
the cable to hold it in place. The part
number for the Evaporator Coil Sensor is
337-60406-03.
When the condensing temperature reaches
140°F or greater the control will display
“CLN-FIL.” Should the condensing
temperature increase to 160°F the
compressor will automatically shut off.
When the liquid line temperature drops
below 140°F the compressor will restart and
when the line temperature drops to 120°F
the alarm will reset.
Attach sensor to the
liquid line using the
wrap
Center
of Coil
Fully insert probe
into coil
Insert sensor inside the cabinet thru
1/2” holes in back wall
1” inside cabinet
.756 between 1
st
and 2
nd
hair bend