All 3 of my China receiver/driers leak at the fitting to the evaporator.
They only leak at high pressure, a normal installation does not check for leaks under high pressure, only at low pressure. This makes the leak almost undetectable when working on the A/C system. Low pressure at the receiver/drier is seldom above 50 pounds during A/C operation. When the A/C is shut down, the pressure equalizes throughout the entire system - normally more than 100 pounds in the receiver/drier.
The Chicoms are resurfacing the sealing surface in a smaller diameter than original at a depth of more than 40 thousands deeper than original. This resurfacing at deeper & smaller diameter creates a step which cuts the "O" ring seal & causes the evaporator to not fit in far enough for a good seal.
I trashed my original 'cause I'm installing a new one & now I have to have another shipped - more delay. I'll have to put it in the wife's oven when she's at work to dry it out.
They only leak at high pressure, a normal installation does not check for leaks under high pressure, only at low pressure. This makes the leak almost undetectable when working on the A/C system. Low pressure at the receiver/drier is seldom above 50 pounds during A/C operation. When the A/C is shut down, the pressure equalizes throughout the entire system - normally more than 100 pounds in the receiver/drier.
The Chicoms are resurfacing the sealing surface in a smaller diameter than original at a depth of more than 40 thousands deeper than original. This resurfacing at deeper & smaller diameter creates a step which cuts the "O" ring seal & causes the evaporator to not fit in far enough for a good seal.
I trashed my original 'cause I'm installing a new one & now I have to have another shipped - more delay. I'll have to put it in the wife's oven when she's at work to dry it out.