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tcgg
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truemfg
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MECHANICAL TEMPERATURE CONTROLS
COIL SENSING
An evaporator coil sensing temperature control ensures that the evaporator coil will remain clear
of frost and ice by not allowing the compressor to restart until the coil temperature is above the
freezing temperature. This is considered an
off cycle defrost.
MECHANICAL TEMPERATURE CONTROL GENERAL SEQUENCE OF OPERATION
MECHANICAL CONTROL DELI DISPLAY GENERAL SEQUENCE OF OPERATION
1. Cabinet is plugged in.
a. Interior lights will illuminate. If lights do not come on verify the light switch is in the “ON” position.
2. A. The compressor and evaporator fans will start on a model TCGR if the temperature control is calling for cooling.
(If the compressor does not start, verify that the temperature control is not in the “OFF” or “0” position.)
B. The compressor will start on models TSID, TDBD, and TCGG if the temperature control is calling for cooling.
(The above 3 models are a gravity style coil design and do not have an evaporator fan motor.)
3. The temperature control may cycle the compressor and evaporator fan(s) on and off together.
a. The temperature control is sensing the evaporator coil temperature.
b. The temperature control should be set on the #4 or #5.
c. The warmest setting is #1, the coldest is #9, and #0 is the off position.
d. The thermometer is designed to read and display a cabinet temperature
not a product temperature.
The thermometer may reflect the refrigeration cycle swings of up and down temperatures.
The most accurate temperature on a cabinet's operation is to verify the product temperature.
4. A. There is not a defrost timer on a model TCGR as the temperature control will initiate the off-cycle defrost during each refrigeration cycle.
a. At this time, the compressor will turn off. No heaters will be energized.
b. After the evaporator coil temperature has been reached determined by the temperature control, the compressor will restart.
B. The defrost timer will initiate defrost on models TSID, TDBD, and TCGG during specific times of day.
a. At this time, the compressor will turn off. No heaters will be energized.
b. After the predetermined duration has expired, the compressor will restart