SPECTRUM™ TS Operation
79
The Defrost cycle should end automatically.
NOTE: The unit will not defrost unless the
evaporator coil temperature is below 45 F (7 C).
Loading Procedure
1. Make sure the unit is Off before opening the
doors to minimize frost accumulation on the
evaporator coil and heat gain in the truck.
(Unit may be running when loading the truck).
2. Spot check and record load temperature while
loading. Especially note any off-temperature
product.
3. Load the product so that there is adequate
space for air circulation completely around the
load. Do not block the evaporator inlet or
outlet.
4. Products should be pre-cooled before loading.
Thermo King units are designed to maintain
loads at the temperature at which they were
loaded. Transport refrigeration units are not
designed to pull hot loads down to
temperature.
Post Load Procedure
1. Make sure all the doors are closed and locked.
2. Start the unit if it was shut off to load.
3. Make sure the setpoint is at the desired setting.
4. One-half hour after loading, defrost the unit
by momentarily pressing the Manual Defrost
switch. If the evaporator coil sensor
temperature is below 45 F (7 C), the unit will
defrost. The microprocessor will terminate
defrost automatically when the evaporator coil
temperature reaches 52 F (11 C) or the unit
has been in the Defrost mode for 30 to 45
minutes (depending on setting).
Post Trip Checks
1. Wash the unit.
2. Check for leaks.
3. Check for loose or missing hardware.
4. Check for physical damage to the unit.
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