Help installing R22 A/C

[manic]

Hello Guys....
I am a newbie in this forum and i want to ask somethings because i am trying to install an A/C..

1.How do i charge gas into the A/C? is the Compressor off and release gas in or the compressor must runs? What is the exact procedure?

2. How do i change the oil inside the comressor? how do i know if it enough oil inside the compressor? Does a noissy compressor means that has no oil?

3. I am trying to fix an A/C. I am turning onthe A/C to the cold function, and my meter should say around 50-70 Psi. Instead of this reading it goes below 0. What is the problem?


Please help me. or if you know a site that i can read this procedure that will help a lot ...................


Always keep trying!!!!!!!!!!!!

[martinpsullivan]

Most new splits have about 5 metres on gas pumped down in to them and valved off. When you put your gauges on and get 0 psi its because you need to pressure test with nitrogen and vac out new lines you have installed. Then open valves on split unit to release gas into system then top up as required. The oil should already be in compressor by manufacturer. If this is a new unit.

[manic]

no my mistake... not a new unit. i change the location so the gas is released. No gas inside now...

[botrous]

Hi manic

try this link : http://toad.net/~jsmeenen/charge.html

Hope it's good and hope it helps

Added to the original post
After reading the other friends posts and reading again your post I edit this one and would say bring a professional to get this job done , you harmed the ozone so take it easy and try not to harm urself

Regards

[Abe]

Hello Guys....

1.How do i charge gas into the A/C? is the Compressor off and release gas in or the compressor must runs? What is the exact procedure?

2. How do i change the oil inside the comressor? how do i know if it enough oil inside the compressor? Does a noissy compressor means that has no oil?

3. I am trying to fix an A/C. I am turning onthe A/C to the cold function, and my meter should say around 50-70 Psi. Instead of this reading it goes below 0. What is the problem?


ys keep trying!!!!!!!!!!!!


Its easy Manic

Look in your yellow and get a qualified guy
Cyprus is now part of EC, so youre bound by European law as well

Regards

[chillin out]

no my mistake... not a new unit. i change the location so the gas is released.
That will be another hole in the ozone then!!!!:eek:

If you are going to work on refrigeration or a/c systems, RECLAIM THE GAS.

You will first have to leak test the pipe run, then vacuum the system to get rid of any air or moisture . Open your gauges and let in some gas then start the comp running then continue to ad gas to the amount required.

Chillin:) :)

[Brian_UK]

3. I am trying to fix an A/C. I am turning onthe A/C to the cold function, and my meter should say around 50-70 Psi. Instead of this reading it goes below 0. What is the problem?



no my mistake... not a new unit. i change the location so the gas is released. No gas inside now...
I think that you have answered your own question don't you?

It goes below 0 because you haven't got any gas in it !!!

Please do get some expert help, you have already broken the law by releasing refrigerant into the atmosphere.

Try not to endanger yourself or anyone else - stop now.

[frigidfridgie]

How many actually believe that released refrigerant does harm the ozone layer?

[botrous]

How many actually believe that released refrigerant does harm the ozone layer?

I do :) . . . . . . .

[chillin out]

How many actually believe that released refrigerant does harm the ozone layer?
Everybody who cares about our world and its inhabitants.

It might not be the most harmfull pollutant but it is still a factor.

Chillin:) :)

[Brian_UK]

How many actually believe that released refrigerant does harm the ozone layer?Strange question from a techy :(

[adam]

How many actually believe that released refrigerant does harm the ozone layer?

how do you make a hole in a gas? ozone is made by radiation from the sun splitting oxygen atoms. these free atoms are then fused to other oxygen atoms to make o3(ozone).the half life of ozone is around 3 hours,which means that at night, when there is no sun, there is no ozone layer.i'm not saying that we should be blowing off whatever gas we feel like. there's only one world, and we should be doing everything we can to look after it. just don't take everything you are told for gospel ;)

[Abe]

At one time they used to dump raw sewage into the River Thames.......until everything in the river died.

Similarly I " have come round" to the view that emitting into the atmosphere, notwithstanding how small the quantities to be, of any substances that do not break down easily biologically, should be controlled and safer work practices should be adhered to.

I accept also that we should not always take for gospel what the scientests always tell us, "or is it the scientests??? "

Because policies are always formed by economists and industrialists, not the scientest.

Scientest put forward findings, politicians and the like attempt to understand these and legislate.

There are far greater "evils" then fridge gasses alone........A jet engine say for instance.... on a jumbo jet.........Each engine consumes 20 tonnes of oxygen per minute..........

But economically it is not possible to ban extent of jet engine use.

So I say...........just play ball.......Adopt safe gas handling practice and do your bit.

[Karl Hofmann]

How many actually believe that released refrigerant does harm the ozone layer?


Even if they are wrong, then I would still rather not be breathing in R22, R12, R134a etc etc. It is simply not in my operating specs.

There are some things that we cannot do without, Abes jet engines are a good example but even the jet manufacturers work to develop less poluting engines, and I feel that we should all do our bit to protect our own arses too. I hope that one of our Scottish members will correct me if I get this wrong, but many a mikle makes a muckle

[shanes696]

At one time they used to dump raw sewage into the River Thames.......until everything in the river died.

Similarly I " have come round" to the view that emitting into the atmosphere, notwithstanding how small the quantities to be, of any substances that do not break down easily biologically, should be controlled and safer work practices should be adhered to.

I accept also that we should not always take for gospel what the scientests always tell us, "or is it the scientests??? "

Because policies are always formed by economists and industrialists, not the scientest.

Scientest put forward findings, politicians and the like attempt to understand these and legislate.

There are far greater "evils" then fridge gasses alone........A jet engine say for instance.... on a jumbo jet.........Each engine consumes 20 tonnes of oxygen per minute..........

But economically it is not possible to ban extent of jet engine use.

So I say...........just play ball.......Adopt safe gas handling practice and do your bit.
Oh I don't know, I'm all for warmer summers due to global warming;)

[iceman007]

It's about responsible working practices and taking a responsible attitude to the environment. I believe that CFC refrigerants are detrimental to the ozone layer, and as a Dad of 4 believe that I have a duty to care for the environment for the future of my own children as well as other generations.

Point made
James

[phil68]

It's about responsible working practices and taking a responsible attitude to the environment. I believe that CFC refrigerants are detrimental to the ozone layer, and as a Dad of 4 believe that I have a duty to care for the environment for the future of my own children as well as other generations.

Point made
James
Talking of which I was in Halfords the other day & noticed that they now sell little R134A cans for topping up car A/C. One of them even came with an additive to seal leaks (the word Radweld comes to mind?) I can't believe Halfords are being so irresponsible:eek:

[iceman007]

Talking of which I was in Halfords the other day & noticed that they now sell little R134A cans for topping up car A/C. One of them even came with an additive to seal leaks (the word Radweld comes to mind?) I can't believe Halfords are being so irresponsible:eek:

I read about that somewhere as well. It's being driven by this DIY society. Too much of this "it's easy to do it youyrself, why waste money on an a/c engineer" philosophy. Exactly the attitude being fuelled by B and Q's airforce air conditioning, which apparently my nan could fit in just over one hour or so !!

[Karl Hofmann]

It is always handy to have a Granny who keeps a core borer in her knicker drawer :p

Halfords who sell this crap in a can love to give the impression that the punter will save cash but the price of the cans to properly charge any run of the mill car, say a puke 306 is considerably dearer than the cost of going to an ac man. Most older cars (Over 3years old) that came to me had leaks due to corrosion, and the leak sealer either works by crystalising on contact with moisture or by causing the seals to swell and plug the leak at the O rings, either way, not a good idea.

Ever seen a vacuum pump on sale in Halfords?

This Summer I pulled the plug on working on car ac, too many people doing the job now and so they are cutting their own throats to recoup the price of their equipment, but if an interesting job comes my way I may still take it on for a Saturday morning job but they pay my price and in return get a quality job.

I understand that Halfords have recently been under fire for selling refrigerant to the public, their defense is that the kits contain so little R134a that they can see no problem, Indeed the kits that I have seen on their shelves contained around 1-200g of refrigerant and the rest is oil, rejuvinator, and sealer, so bear in mind that a diesel 306 holds a charge of 900g, Halfords do have a point

[iceman007]

She's got a reclaim unit, vacuum pump and loads of screwdrivers as well
Actually, I have to say that I have never worked on car a/c as I was always led to believe it was too cut throat.

[Karl Hofmann]

It used to be a nice little earner five years ago, but the equipment suppliers bought shed loads of Refrigerant management stations and churned them out by the dozen, the motor trade is always looking for the next big thing to make a quick buck, so suddenly every back street tin shed is an air con specialist, so it is time to get out if folk would no longer pay what I asked, I always knew that the automotive market would only be temporary, but it was a usefull step.

Also learned who not to buy a car from:eek:

[phil68]

I've also found that quite a few so-called car AC repair firms don't want to know if it's any more involved than charging up with gas.

[Karl Hofmann]

Thats right, as a result it is almost impossible to get a customer to pay for a leak test, they would rather go to a "Blow and go " merchant for fourty quid.
Many cars that were introduced with air con are now at an age where they are bangers, worth about a grand, so the punter wont pay for a decent repair anyway. My example of the 306 diesel is typical, a new condenser is not dear, less than £100, but the front end has to come off to replace it with all those lovely corroded nuts, plastic clips snap and break, and as soon as you disturb the condenser the two pipes under the condenser will fail, as they are alloy pipes clipped up with mild steel brackets right where road spray can get them, a further £100 add to that the price of a recharge, lubricant and labour and you are very quickly near to half the value of the car.

Clearly it is far easier for the ac man to charge the system and get his cash, if it leaks, well that is a problem for another day and someone else.

I love car owners who used to tryto knock my price down with the comment that someone else would do the job for less, but this cheaper guy couldn't fix the problem.:rolleyes:

Oh well I'll let the muppets fight it out among themselves:D

[slingblade]

On a slightly different tack, most of the car ac work done by myself these days is for an insurance approved repair shop. this means that the majority of cars are no more than 18 months old and the on site mechanics do all the non fridge work. my role is to remove gas and recharge after the front end is rebuilt. there is decent money in this and no shortage of people who stuff their car up the backside of someone else, so the demand is constant.

[koolwell]

yes hi manic,
im looking to move to cyprus to live and work could you please give me any information on vacancies for a refrigeration and air conditioning engineer. (sites,links ect)
Any information would be helpfull.

kind regards DARRELL