True Manufacturing Company T-23DT Danfoss Temperature Control Freezer Sequence Of Operation

True Food Service Equipment, Inc.

DANFOSS TEMPERATURE CONTROL (FREEZER SEQUENCE OF OPERATION)

1.Cabinet is plugged in.

a.Display will illuminate showing “deF”.

b.Cabinet will start in a Defrost Cycle.

2.During the initial Defrost Cycle, the evaporator fan(s) and the compressor will remain off for a minimum of 4 minutes.

a.After the Defrost Cycle there will be a 2 minute delay.

b.After the 2 minute delay the compressor will start.

c.The evaporator fans will remain off for an additional 3 minutes.

d.The display will continue to show “deF” for an additional 30 minutes.

3.The electronic control will cycle the compressor and the evaporator fan(s) on and off determined by the Set-Point and Differential temperatures (Set-Point is adjustable).

a.The Set-Point is the preprogrammed temperature which shuts off the compressor and evaporator fan(s).

b.The Differential is the preprogrammed temperature that is added to the Set-Point temperature that will start the compressor and evaporator fan(s).

c.The Danfoss control is designed to read and display a cabinet temperature. This cabinet temperature may reflect the refrigeration cycle of the Set-Point and it’s Differential.

Example: If the Set-Point is -6°F/1°C and the Differential is 6°F/4°C

(Set-Point) -6°F + 6 (Differential) = 0°F

Or

(Set-Point) -21.4°C + 3.3 (Differential) = -18.1°C

The compressor will cycle off -6°F/-21.4°C and back on at 0°F/-18.1°C

4.The electronic control is preprogrammed to initiate defrost every 4 hours of compressor run time (non-adjustable).

a.At this time the evaporator fans and the compressor will turn off.

b.Once a preprogrammed temperature of the evaporator coil is reached, the Defrost Cycle will terminate and the 2 minute delay will occur.

c.After the 2 minute delay the compressor will restart.

d.The evaporator fans will remain off for an additional 3 minutes.

e.The display will continue to show “deF” for an additional 30 minutes.

	TRUE Manufacturing recommends that only the Set-Point may be adjusted due to certain conditions.
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