Ingersoll-Rand Thermo King V-520 10, Руководство оператора

Страница: 22 / 74

Unit Description
22
Refrigerant
V-520-10, V-520-20, V-520-30 and V-520-50 units use R-134a
refrigerant. V-520 MAX-10, V-520 MAX-20, V-520 MAX-30
and V-520 MAX-50 units use R-404A refrigerant.
Liquid Injection System
All V-520 models have a liquid injection system to limit
discharge temperature of the engine driven compressor. If the
discharge gas leaving the compressor reaches a temperature of
230 ± 5 F (110 ± 3 C) the liquid injection switch closes,
providing voltage to the liquid injection solenoid. The solenoid
opens a valve, allowing liquid refrigerant to flow from the
liquid line near the drier inlet to the metering orifice attached to
the suction line fitting on the engine driven compressor. As the
6. Enter Key. Is used to enter a new command such
as manual defrost, etc.
7. Buzzer. It is energised when the vehicle battery
and the electric power supply are
connected simultaneously. It is also
energised if the doors are opened while
the refrigeration unit is running.
8. Cool
Symbol (Thermometer with an arrow pointing
downward). The unit is cooling.
9. Heat
Symbol (Thermometer with an arrow pointing
upward). The unit is heating.
10. C/ F
Symbol. Indicates whether the on-screen
temperature reading is in degrees
Celsius (C) or degrees Fahrenheit (F).
11. Alarm
Symbol. Indicates that there is an alarm in the
system.
12.
Maintenance
Symbol. Warns of the need to carry out
maintenance to the unit.
13. Defrost
Symbol. Indicates the unit is in Defrost Mode.
14. Electrical
Symbol. Indicates that the unit is in Electric
Standby.
Unit Description
22
Refrigerant
V-520-10, V-520-20, V-520-30 and V-520-50 units use R-134a
refrigerant. V-520 MAX-10, V-520 MAX-20, V-520 MAX-30
and V-520 MAX-50 units use R-404A refrigerant.
Liquid Injection System
All V-520 models have a liquid injection system to limit
discharge temperature of the engine driven compressor. If the
discharge gas leaving the compressor reaches a temperature of
230 ± 5 F (110 ± 3 C) the liquid injection switch closes,
providing voltage to the liquid injection solenoid. The solenoid
opens a valve, allowing liquid refrigerant to flow from the
liquid line near the drier inlet to the metering orifice attached to
the suction line fitting on the engine driven compressor. As the
6. Enter Key. Is used to enter a new command such
as manual defrost, etc.
7. Buzzer. It is energised when the vehicle battery
and the electric power supply are
connected simultaneously. It is also
energised if the doors are opened while
the refrigeration unit is running.
8. Cool
Symbol (Thermometer with an arrow pointing
downward). The unit is cooling.
9. Heat
Symbol (Thermometer with an arrow pointing
upward). The unit is heating.
10. C/ F
Symbol. Indicates whether the on-screen
temperature reading is in degrees
Celsius (C) or degrees Fahrenheit (F).
11. Alarm
Symbol. Indicates that there is an alarm in the
system.
12.
Maintenance
Symbol. Warns of the need to carry out
maintenance to the unit.
13. Defrost
Symbol. Indicates the unit is in Defrost Mode.
14. Electrical
Symbol. Indicates that the unit is in Electric
Standby.