2.1.2 Pressure and temperature of refrigerant
The pressure in normal condition shows the figure in the right side
table, but the pressure (P1) of high pressure side tube is affected
greatly by the temperature change and about 16kg/cm
2
.G in a low
temperature condition (indoor/outdoor 21°C).
The pressure fluctuation is affected by the tube length or insulation
as well as temperature change, so measure the pressure (P
2
) of low
pressure side for the trouble shooting of refrigerant system.
<Trouble finding by pressure/temperature>
Note) The high/low temperature is a figure converted into pressure.
The low pressure is normally 4.5-6.0kg/cm
2
G.
(Temperature is normally 3°C-10°C.)
Indoor Side
Outdoor Side
Ev
apor
ator
Compressor
Capillary Tube
High pressure (Liquid side)tube
Low pressure(Gas side) tube
Accumulator
Compressor
P
1
P
2
Measuring place
Pressure(kg/cm
2
G)
P1
About19.5
P2
About 5.0
Pressure
Temperature
Cause
Explanation
(than normal)
(than normal)
Higher
Higher
Bad compression:
Compressor failure, Bad revers-
ing Valve
Current flows weakly.
Cooling load is small.
Current flows weakly.
Liquid refrigerant suction:
Excessive refrigerant charging
Gas short : Gas leak
Closed : Pipe internal
Current is low.
Current is low.
High pressure is not
increased rapidly in early
running stage.
Higher
Normal
Lower
Air Conditioner Service Manual
70
Содержание HSH-I073NBE
Страница 18: ...Louver Pipes and Power Air Conditioner Service Manual 18 ...
Страница 19: ...Air Conditioner Service Manmual 19 ...
Страница 22: ...Air Conditioner Service Manual WIRING DIAGRAM MODEL HSH I183NBE INDOOR UNIT OUTDOOR UNIT 22 ...
Страница 23: ...Air Conditioner Service Manual WIRING DIAGRAM MODEL HSH I243NBE INDOOR UNIT OUTDOOR UNIT 23 ...
Страница 25: ...Air Conditioner Service Manual WIRING DIAGRAM MODEL HSH L093NDC W HSH L093NDC S INDOOR UNIT OUTDOOR UNIT 25 ...
Страница 26: ...Air Conditioner Service Manual WIRING DIAGRAM MODEL INDOOR UNIT OUTDOOR UNIT 26 ...