Operating Instructions
70
Structural:
Visually inspect the unit for leaks,
loose or broken parts and other damage. The
condenser and evaporator coils should be clean
and free of debris. Check the defrost drain hoses
and fittings to make sure they are open. Make sure
all the doors are latched securely.
Loading Procedure
1. Make sure the unit is turned off before
opening the doors to minimize frost
accumulation on the evaporator coil and heat
gain in the trailer. (Unit may be running when
loading the trailer from a warehouse with door
seals.)
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 transport refrigeration 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 (see
3. Make sure the setpoint is at the desired setting.
4. One-half hour after loading, manually initiate
a Defrost cycle. 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 58 F (14 C) or the
unit has been in the Defrost mode for 30 or 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.
