Refrigerant..........................................................
Inspection on automobile...............................
- Inspection of refrigerant quantity
Observe the visible window on high pressure liquid pipe.
Testing condition:
¡ñ¡ñ¡ñ¡ñ¡ñ (^) Engine runs at the speed of about 1500 rpm.
¡ñ¡ñ¡ñ¡ñ¡ñ (^) Fan speed is controlled at “HI” position.
¡ñ¡ñ¡ñ¡ñ¡ñ (^) A/C switch turns to ON.
¡ñ¡ñ¡ñ¡ñ¡ñ (^) Temperature control turns to “MAX. COOL” position.
¡ñ¡ñ¡ñ¡ñ¡ñ (^) Automobile doors are opened.
Air conditioner--Refrigerant
Item Phenomenon Refrigerant quantity Verify
1
There is air bubble on window. Lack (1)Use leakage measurer to check whether there is any leakage,
if necessary, repair it.
(2)Add refrigerant until air bubble disappears.
2 There is no air bubble on window. Without, full or too full Referring to item 3 and 4.
3
There is no temperature difference on Without or little (1)Use leakage measurer to check whether there is any leakage, if necessary, repair it.
outlet and inlet of compressor (2)Add refrigerant until air bubble disappears.
4
There is obvious temperature difference Applicable or too much Referring to item 5 and 6.
on outlet and enter of compressor.
5
Window becomes clear after air Too much (1)Reclaim refrigerant.
conditioner is closed. (2)Exhaust air and supply applicable clean refrigerant.
6
After air conditioner is closed, refrigerant Applicable -
makes bubble, then becomes clear.
*When environment temperature is normal and refrigerant is enough, it is normal when there is no
bubble in window.
- 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:
zSwitch is set up at inner air cycle, and the inlet temperature is 30-50°C.
zEngine runs at the speed of 1500 rpm.
zSet up the speed control switch of fan at “HI” position.
zTemperature control switch is set up at “COOL” position.
zA/C switch turns to “ON”.
zAutomobile door is opened completely.
Hint: please pay attention to that the show of meter might change little for environment tem-
perature changes.View window 215