Thread: air con cactus

if youve opened the system its got air in the refigerant lines and it wont work properly.. If youve removed a component you need to take it to a certified aircon guy to get it regassed as it will have lost 90+% of the gas.


the suction line is ment to suck thats why its a suction line..... If theres no refigerant pressurising the system it'll pull down to anything up to 15 inches of mercury on the suction side.


do you know how your aircon works and what the bits are ment to do or do you need a more indepth fault find?


if its more in depth that you're after... whats the gauges reading on the high and low side, what weight of gas have you got in?

I am a qualified refrigeration mechanic - I am the senior refrigeration trainer in a private RTO and I have the relevant Arctick license.

I put about 400 grams into it, which would be a bit short if it was 134A but as I am using propane it is about on the mark to charge properly; as there is no exact charge weight it is experiment.

With this amount of charge it shouldn't pull straight into a vacuum; It also stays in a vacuum after I turn it off, hence it has a total blockage. Now due to the speed that it pulls down it has to be on the suction side as it is to fast to be before the evaporator or a blocked TX valve (which is also new)

the problem is obviously these fittings but I have never worked on a landrover A/C before so I need a bit of a heads up on these fittings and how to make them work?

blythe

you didnt do something daft and leave a blanking plug in place when you did the fittings up? Ive seen that before.

the only other thing I can think of it being is if youve twisted the line and collapsed it or if the propanes reacted with the oil and its sludged up in the tail end of the evaporator.

have you tried cracking the joint of the TX valve and the evaporator and doing a nitrogen push back from the low pressure fitting?