Aircon loses cold intermittently

[yapoy86]

OT
Why are filipino drivers obsessed in having the evaporator removed and cleaned? Most if not all a/c shops in the country do not have a vacuum pump. They use an auto a/c compressor as "vacuum pump" and it cannot pull deep vacuum of 29.8 inches of mercury resulting in moisture and/or non condensible gases (NCG or air) in the system

many shops now use legit vacuum pumps.. but not many use refrigerant extracting machines.. they still vent it on a bottle with water..

what i do notice on all shops is that they do not weigh the refrigerant charge instead they only use pressure and the sight glass as basis whether the system is full or not.

re the evaporator pull down for cleaning, air in the metro is so polluted that evaporators get clogged up with dirt and carbon that manual cleaning is necessary. ive seen used evaporators from japan and they are not that dirty compared to used evaporators here in ph.

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OT
Why are filipino drivers obsessed in having the evaporator removed and cleaned? Most if not all a/c shops in the country do not have a vacuum pump. They use an auto a/c compressor as "vacuum pump" and it cannot pull deep vacuum of 29.8 inches of mercury resulting in moisture and/or non condensible gases (NCG or air) in the system

many shops now use legit vacuum pumps.. but not many use refrigerant extracting machines.. they still vent it on a bottle with water..

what i do notice on all shops is that they do not weigh the refrigerant charge instead they only use pressure and the sight glass as basis whether the system is full or not.

re the evaporator pull down for cleaning, air in the metro is so polluted that evaporators get clogged up with dirt and carbon that manual cleaning is necessary. ive seen used evaporators from japan and they are not that dirty compared to used evaporators here in ph.