True TBR Series Installation Manual page 16

TRUE
TBR | TDR SERIES
CABINET OPERATION
GENERAL SEQUENCE OF OPERATION – REFRIGERATOR & FREEZERS CABINETS
WHEN THE CABINET IS PLUGGED IN:
• Interior lights will illuminate on glass door models (see light switch location).
• An electronic control with digital display will illuminate (if installed).
• There may be a short delay before the compressor and/or evaporator fan(s) start.
• This delay may be determined by time or by temperature.
• This delay may be the result of an initial defrost event that will be a minimum of 6 minutes.
• The temperature control/thermostat may cycle the compressor and evaporator fan(s) on and off together.
Models TSID, TDBD, TCGG, and TMW do not have an evaporator fan(s).
EXCEPTION:
• The temperature control/thermostat is sensing either an evaporator coil temperature or air temperature, not a
product temperature.
• An analog thermometer, a digital thermometer, or an electronic control display may reflect the refrigeration cycle swings
of up and down temperatures, not a product temperature. The most accurate method to determine a cabinets operation
is to verify the product temperature. Every cabinet will require a defrost event to ensure the evaporator coil remains
clear of frost and ice buildup. Defrost is initiated by a defrost timer or by the electronic control.
• A refrigerator with a mechanical temperature control will defrost during every compressor off-cycle.
• A freezer with a mechanical temperature control will defrost by time initiation as determined by a defrost timer.
Models TFM, TDC, THDC and TMW will require a manual defrost.
EXCEPTION:
• The frequency of this manual defrost will depend on the cabinet's usage, and ambient conditions.
• An electronic control will defrost by either a time initiation or on demand as determined by the electronic control.
• An electronic control with a digital display (if installed) will show "def" during defrost.
The display may have a short delay before showing a temperature after a defrost event has expired and may
NOTE:
show "def" during a refrigeration cycle.
• Models with an analog or digital thermometer may show higher than normal temperatures during defrost.
A refrigerator will use the evaporator fans to clear the coil during defrost.
Models TSID, TDBD, and TCGG do not have an evaporator fan(s).
EXCEPTION:
• A freezer will use heaters to clear the coil during defrost.
The evaporator coil heater and drain tube heater are only energized during defrost. Defrost is terminated
NOTE:
when a specific evaporator coil temperature is reached or by a time duration.
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(CONT.)
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