Refrigerant; Inspection On Automobile - Geely FC Workshop Manual

Refrigerant

Inspection on automobile

1. Inspection of refrigerant quantity
Observe the visible window on high pressure liquid pipe.
Testing condition:
Engine runs at the speed of about 1500 rpm.
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Fan speed is controlled at "HI" position.
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A/C switch turns to ON.
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Temperature control turns to "MAX. COOL" position.
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Automobile doors are opened.
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Item Phenomenon
There is air bubble on window.
1
2 There is no air bubble on window.
There is no temperature difference on
3
outlet and inlet of compressor
There is obvious temperature difference
4
on outlet and enter of compressor.
Window becomes clear after air
5
conditioner is closed.
After air conditioner is closed, refrigerant
6
makes bubble, then becomes clear.
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When environment temperature is normal and refrigerant is enough, it is normal when there is no
bubble in window.
2. Use filling instrument package to check the refrigerant pressure.
This is a type to use filling pressure meter to check the malfunction position. In following situations, read
the meter.
Testing condition:
Switch is set up at inner air cycle, and the inlet temperature is 30-50°C.
Engine runs at the speed of 1500 rpm.
Set up the speed control switch of fan at "HI" position.
Temperature control switch is set up at "COOL" position.
A/C switch turns to "ON".
Automobile door is opened completely.
Hint: please pay attention to that the show of meter might change little for environment tem-
perature changes.
Air conditioner--Refrigerant
Refrigerant quantity
Lack (1)Use leakage measurer to check whether there is any leakage,
(2)Add refrigerant until air bubble disappears.
Without, full or too full Referring to item 3 and 4.
Without or little (1)
(2)
Applicable or too much Referring to item 5 and 6.
Too much (1)Reclaim refrigerant.
(2)Exhaust air and supply applicable clean refrigerant.
Applicable -
Verify
if necessary, repair it.
Use leakage measurer to check whether there is any leakage, if necessary, repair it.
Add refrigerant until air bubble disappears.
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