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[Webby the Bear]

Thanks for the post Nige. 

For evacuating, yeah I was going to use the machine at school and then use the gauges/vac pump at home.

Adding oil I was hoping I'd find on Autodata.

But, you're quite right.... unless I could find a can exactly 930g then it would be guessing.

I'll see what the teacher says about me coming in after hours 

Thanks 

[Webby the Bear]

Ps, as for the reason... just kinda wanted to be as self sufficient as poss. but I suppose without right gear it's going to be very difficult 

Out of interest.... is 930 the exact amount or is there a tolerance? i.e. 900-930? just out of interest

[05omegav6]

Exact amount is on sticker on slam panel... exact for a reason

Agree with Entwood, understanding the system is all well and good but faffing for the sake of £40 or so is simply not worth it

[Webby the Bear]

Exact amount is on sticker on slam panel... exact for a reason

Agree with Entwood, understanding the system is all well and good but faffing for the sake of £40 or so is simply not worth it

Fair enough Al  Thanks for input 

[tunnie]

Even Vx charged just £59, somehow this time around the air-con appears more powerful than last re-gas at an indy. 

[05omegav6]

To be clearer...

The system has certain amount of space in it. ie the pipes, compressor, evaporator and condenser are all fixed volume, the only variable being pressure, which is entirely dependent on temperature.

The exact content of the system is important as the temperature varies the pressure, ie a cold system will have a lower pressure than a hot system for any given volume. The system will function at a higher or lower volume because the pressure sensor has a pretty vague tolerance. But put too much refrigerant in and the system will overpressurerise as the system temperature rises. Equally too little refrigerant might cause the low pressure side to collapse as it cools.

Unlike the coolant system, there's no overflow

[Webby the Bear]

To be clearer...

The system has certain amount of space in it. ie the pipes, compressor, evaporator and condenser are all fixed volume, the only variable being pressure, which is entirely dependent on temperature.

The exact content of the system is important as the temperature varies the pressure, ie a cold system will have a lower pressure than a hot system for any given volume. The system will function at a higher or lower volume because the pressure sensor has a pretty vague tolerance. But put too much refrigerant in and the system will overpressurerise as the system temperature rises. Equally too little refrigerant might cause the low pressure side to collapse as it cools.

Unlike the coolant system, there's no overflow

Cheers mate.... just remember a video I watched where the sticker said 19-23oz (usa). So just wondered if it was worth looking at that.

But thanks for the explanation 

[biggriffin]

Thanks mate

TBH I was going to buy a set of manifold gauges and vacuum pump so I can do these repairs in future...same way of doing it... just need to measure out oil and refrigerant 

That's doing it old school way or another saying professionally, to do it that way you also need a set of digital scales to constant weigh the bottle as you refill, a vacuum pump, a waste bottle, a full refrigerant bottle, and now as the gas in cars has changed to a butane based gas a certification,training course in F gas.
easier to plug the dalek in,let it do,its thing while you drink tea.

[Magwheels]

Got mine done by ATS @£29.99 all in not long ago, offer has probably expired now. They leak tested it and recharged it with gas and oil, then checked the battery with a drop test and a few other upsale items (that they confirmed I didn't need which was reassuring) and I though yeah seems ok nothing special until the wife kept moaning she was cold!! I must admit I don't use it a lot (I'd rather have the sunroof & windows open) but last Sunday it was worth every penny. As per previous posts its really not worth trying to use a can as you will need to evac and add oil as well. I course if you can do that and measure the gas accurately then go for it, there's nothing like a bit if DIY.

[Webby the Bear]

Well, if i can't get it recharged at school i'll certainly get it evacuated and vacuumed down and make sure that it holds pressure so they cant say ''yeah its gointo cost a million pounds cos we found and fixed a leak''.

just dont trust these places with anything

[tunnie]

Well, if i can't get it recharged at school i'll certainly get it evacuated and vacuumed down and make sure that it holds pressure so they cant say ''yeah its gointo cost a million pounds cos we found and fixed a leak''.

just dont trust these places with anything

I was surprised with Vx, I thought they did a good job over-all. They should have sourced part first before filling with gas really, bit sneaky there.

But I know for sure now it is the valve now 

[Magwheels]

Well, if i can't get it recharged at school i'll certainly get it evacuated and vacuumed down and make sure that it holds pressure so they cant say ''yeah its gointo cost a million pounds cos we found and fixed a leak''.

just dont trust these places with anything

Yep, you and me both, that's why if something needs to be done its me that does it.....Unless its geo or air-con re gas as I don't have the equipment to do it properly.

[martin42]

Well, if i can't get it recharged at school i'll certainly get it evacuated and vacuumed down and make sure that it holds pressure so they cant say ''yeah its gointo cost a million pounds cos we found and fixed a leak''.

just dont trust these places with anything

Try the place i recommended,he is very good,and very helpful.

[TheBoy]

As others have said, not really worth trying it yourself, unless you can do a proper vac, and accurately get the correct amount back in, along with the PAG46.

As for shitfit, I paid them £29 for 4 months running, was never particularly good. Got someone who knew what they were doing, and it worked for ages until such time the compressor decided to disintegrate .  I blame that Darth Loo-knee for letting me nick a faulty one off one of his breakers when he wasn't looking