Chery QQ Service Manual
of the refrigerant tank is used, replacement should be done according to method as
described in the following.
① unscrew the plate nut，return the hole forming pin back and remove the charge
valve of the refrigerant tank.
② install the removed charge valve on the new refrigerant tank.
③ as long as the refrigerant leaks from the gap between the refrigerant tank and the
charge valve with sizzling noise, you should promptly fix the plate nut and the manual
valve at low-pressure side of the manifold pressure meter.
④ turn the handle of the charge valve clockwise, screw the hole forming pin into the
new refrigerant tank and
perforate a pinhole to make the refrigerant flow.
⑤you should turn off the manual valve at the low side of the manifold pressure meter
after the system is charged with the specified amount of refrigerant(650g or when the
high/low pressure meters indicate the following specified values respectively.
When the specified amount of refrigerant is charged, the low-pressure meter indicates:
Approximately 245kPa（2.5kg/㎝
2
，35.5psi）
When the specified amount of refrigerant is charged, the high-pressure meter
indicates:
Approximately 1470kPa（15kg/㎝
2
，213psi）
V. Remove manifold pressure meter
When the air conditioning system has been charged with the specified amount of the
refrigerant, you could remove the manifold pressure meter as per the following steps.
（1）turn off the manual valve at the low side of the manifold pressure meter ( the
manual valve at the high side should not be turned off during refrigrant charge)
（2）turn off the charge valve of the refrigerant tank.
（3）stop the engine.
（4）wrap the charge hoses with cloth and remove it from the service pipe, which
should be performed quickly.
Warning: the high side is naturally under high pressure, so you should take care of
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