Ingersoll-Rand Thermo King V-520 10, Руководство оператора, Страница: 39 / 74

Unit Operation
39
Post-Start Inspection
Thermostat: Adjust the thermostat setting to above and
below the compartment temperature to check thermostat
operation (see Operating Modes).
Pre-cooling: With the thermostat set at the desired
temperature, run the unit for half-an-hour to one hour (or
longer if possible) before loading the truck. Pre-cooling
eliminates residual heat and acts as a good test of the
refrigeration system.
Defrost: When the unit has finished pre-cooling the truck
interior - the evaporator temperature should have dropped
below 2 C (35.6 F) - initiate a defrost cycle with the manual
defrost switch. The defrost cycle should stop automatically.
Loading Procedure
1. To minimize frost accumulation in the evaporator coil and
a heat increase inside the load compartment, ensure that
the unit is OFF before opening the doors. (The unit may
continue to run when the truck is being loaded in a
warehouse with the doors closed.)
2. Carefully check and record the load temperature when
loading the truck. Note whether any products are out of
temperature range.
3. Load the product in such a way that there is sufficient
space for the air to circulate throughout the load. DO NOT
block the evaporator inlet or outlet.
4. Product should be pre-cooled before loading. Thermo
King units are designed to maintain the load at the
temperature at which it is loaded. Transport refrigeration
units are not designed to reduce the load temperature.
Procedure after loading
1. Ensure that all doors are closed and locked.
2. Adjust the thermostat to the desired temperature setpoint.
3. Start the unit.
4. Half an hour after loading the truck, defrost the unit for a
moment by pressing the Manual Defrost switch. If the coil
temperature drops to below 2 C (35.6 F), the unit will
defrost. The defrost cycle should stop automatically.
Unit Operation
39
Post-Start Inspection
Thermostat: Adjust the thermostat setting to above and
below the compartment temperature to check thermostat
operation (see Operating Modes).
Pre-cooling: With the thermostat set at the desired
temperature, run the unit for half-an-hour to one hour (or
longer if possible) before loading the truck. Pre-cooling
eliminates residual heat and acts as a good test of the
refrigeration system.
Defrost: When the unit has finished pre-cooling the truck
interior - the evaporator temperature should have dropped
below 2 C (35.6 F) - initiate a defrost cycle with the manual
defrost switch. The defrost cycle should stop automatically.
Loading Procedure
1. To minimize frost accumulation in the evaporator coil and
a heat increase inside the load compartment, ensure that
the unit is OFF before opening the doors. (The unit may
continue to run when the truck is being loaded in a
warehouse with the doors closed.)
2. Carefully check and record the load temperature when
loading the truck. Note whether any products are out of
temperature range.
3. Load the product in such a way that there is sufficient
space for the air to circulate throughout the load. DO NOT
block the evaporator inlet or outlet.
4. Product should be pre-cooled before loading. Thermo
King units are designed to maintain the load at the
temperature at which it is loaded. Transport refrigeration
units are not designed to reduce the load temperature.
Procedure after loading
1. Ensure that all doors are closed and locked.
2. Adjust the thermostat to the desired temperature setpoint.
3. Start the unit.
4. Half an hour after loading the truck, defrost the unit for a
moment by pressing the Manual Defrost switch. If the coil
temperature drops to below 2 C (35.6 F), the unit will
defrost. The defrost cycle should stop automatically.