Refrigerated Self-Serve Merchandiser (High Profile)
Page 17
ELECTRONIC CONTROL FUNCTIONALITY
Electronic Control
This unit is equipped with an electronic temperature control. The control parameters are set at
the factory and cannot be manually changed in the field. Control parameter changes can only
be made by downloading a new set of parameters using a program chip supplied by Federal
Industries. The pre-set control parameters are listed on the chart in the Settings Chart below.
Operation
The control uses two sensors, one located in the air stream and one located on the evaporator coil.
The sensor located in the air stream is referred to as the temperature control sensor. The sensor
located on the evaporator coil is referred to as the coil sensor.
The temperature control sensor is located inside the top air duct behind the honeycomb material and
is labeled (TEMP). The sensor location is critical for proper operation on the unit. Do not move or
relocate this sensor.
The coil sensor is strapped to the evaporator coil and is labeled (DEFROST). This sensor location is
critical for proper operation of the unit. Do not move or relocate this sensor.
CONTROL LOCATED BEHIND
BASE FRONT PANEL
TEMP SENSOR BULB
LOCATED LEFT OF CENTER
IN AIR DISCHARGE DUCT
DETAIL OF TEMP CONTROL
W/SENSOR WIRES ATTACHED
PROBE WIRES ROUTED THRU
TUB FLOOR AND UP BACK OF CASE
PROBE WIRES MOUNTED TO INSIDE
FLANGE OF TOP FRONT BASE RAIL
W/CABLE HOLDERS
DEFROST SENSOR PROBE LOCATION
3" IN FROM COIL HEADER PLATE
MOUNTED TO CENTER COIL TUBE
WITH (2) CABLE TIES
14GA .
TEMP. PROBE PBI
DEFROST PROBE PB2
14GA .
18GA.
18GA.
BLK
OR
RED
W
W
R
BLK
Y
BLK
CAREL
CONTROLLER
11 10 9 8
76 5
4
OPTIONAL CONTROL
BLK
OR
RED
BLK
OR
RED
The temperature control is set to cut in at 39 degrees F. The Temp control cuts out at 24 degrees F at
the coldest setting’ COLD’ and 34 degrees F at the warmest setting, ‘1’ on the control readout.
