Ingersoll-Rand 900829, Руководство по обслуживанию

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Operating Instructions
37
After 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 36 F (2.2 C) - initiate
a defrost cycle with the In-Cab Control Box. 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, initiate a
defrost cycle with the In-Cab Control Box. If
the coil temperature is below 36 F (2.2 C), the
unit will defrost. The defrost cycle should stop
automatically.
Weekly Pretrip Inspection
The following Weekly Pretrip Inspection should
be completed before loading the truck. While the
weekly inspection in not a substitute for regularly
scheduled maintenance inspections, it is important
part of the preventive maintenance program
designed to head off operating problems before
they happen.
1. LEAKS. Inspect for refrigerant leaks and
worn refrigerant lines.
2. BELTS. Inspect for cracks, wear and proper
belt tension.
3. MOUNTING BOLTS. Inspect bolts are
properly tightened.
4. ELECTRICAL. Electrical connections should
be securely fastened. Wires and terminals
should be free of corrosion, cracks or
moisture.
5. DEFROST DRAINS. Check the defrost drain
hose and fittings to be sure that they are open
so condensate can run out during defrosting.
Check the bottom end of drain hose to be sure
that is not plugged or crushed.
6. STRUCTURAL. Visually check for physical
damage.
7. REFRIGERANT CHARGE. Check for proper
refrigerant charge level.
Weekly Post Trip Checks
1. Wash the unit.
2. Check for leaks.
3. Check for loose or missing hardware.
4. Check for physical damage to unit.