12-15
ⓐ
Pressure • Low pressure : 1.5~2.0 kg/㎠
• High pressure: 14.5~15.0 kg/㎠
ⓑ Estimate • Refrigerant condition good
•Air conditioning good
• Normal air conditioning system
1.Normal
ⓐ
Pressure ● Low pressure : 0.8 kg/㎠(Low)
● High pressure: 8~9 kg/㎠(Low)
ⓑ
Situation ● Deficient of air conditioning
(Air duct is not cool)
● Many bubbles at sight glass
ⓒ
Cause ● Refrigerant leakage in the air
condition
● Clogged the expansion valve
● clogged the receiver drier
ⓓ
Estimate ● Deficient of refrigerant and leakage in
the air conditioning system
ⓔ
Remedy ●Replenish the refrigerant and repair
partially
●Repair the expansion valve and the
receive drier or replace
2. Deficient of Refrigerant Gas
ⓐ
Pressure ●Low pressure : 2.5 kg/㎠(High)
●High pressure: 20 kg/㎠(High)
ⓑ
Situation ● Refrigerant condition is not good
●Never seen the bubble at sight glass
ⓒ
Cause ●Much refrigerant
●Defect of the condenser
ⓓ
Estimate ●Overcharged the refrigerant
●Defect of the condenser: Pin and the
cooling fan
ⓔ
Remedy ●Deflate the refrigerant
●Clean the condenser,and check the
cooling fan belt
3.Too much the refrigerant
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