Thermo King 914 724, Руководство пользователя

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Operating Instructions (Rev. 1/99)
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help the valve reseat and SEAL PROPERLY. The valve
is non-repairable and requires no adjustment. If the
valve fails to reseat properly, remove the refrigerant
charge and replace the valve.
The high pressure relief valve is located on a high pres-
sure line near the condenser. Its location is such that
when the pressure is expelled from the valve, it would
be directed away from anyone servicing the unit.
6. LIQUID INJECTION TEMPERATURE SWITCH.
The liquid injection temperature switch is mounted on
the compressor discharge fitting. It activates the liquid
injection system to cool the compressor. The switch
closes at 230 F (110 C) and opens at 200 F (93 C).
7. OVERLOAD RELAY (Model 20 only). A manual reset
overload relay protects the compressor motor. The
overload relay opens the circuit from the compressor
motor contactor to the electric motor if the motor over-
loads for any reason (e.g., low line voltage or improper
power supply) while the unit is on electric standby
operation.
8. TRANSFORMER FUSES (Model 20 only). The trans-
former fuses are located in the unit control box. They
protect the transformer and rectifier from excessive
current loads.
UNIT OPERATION
Weekly Pretrip Checks
The following weekly pretrip inspection should be com-
pleted before loading the truck. While the weekly inspection
is not a substitute for regularly scheduled maintenance
inspections, it is an important part of the preventive mainte-
nance program designed to head off operating problems
before they happen.
1. LEAKS. Inspect for refrigerant leaks and worn refriger-
ant lines.
2. BELTS. Inspect for cracks, wear and proper tensions.
3. ELECTRICAL INSPECTION. The electrical connec-
tions should be securely fastened. Wires and terminals
should be free of corrosion, cracks or moisture.
4. DEFROST DRAINS. Check the defrost drain hoses
and fittings to make sure that they are open so conden-
sate can run out during defrost. Check the bottom end
of each drain hose to make sure that it is not plugged or
crushed.
5. STRUCTURAL INSPECTION. Visually check for
physical damage.
6. REFRIGERANT CHARGE. Check the receiver tank
sight glass for the proper charge level.
Starting the Unit
Model 10 Units
1. Adjust the thermostat setting.
2. Start the truck engine.
3. Make sure the master On-Off switch is in the ON
position.
4. Place the On-Off switch in the remote or cab control
box in the ON position.
Model 20 Units
Engine Operation
1. Adjust the thermostat setting.
2. Start the truck engine.
3. Make sure the master On-Off switch is in the ON
position.
4. Place the On-Off switch in the remote or cab control
box in the ON position.
NOTE: The cab control box power cord light will light
up if the power cord is plugged in and the truck’s
engine is started.