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Hello, i have a haier HSU-09HG04 Split Air conditioner system. It is a fantastic air conditioner. I am needing to move it to another location. While unscrewing I noticed that gas began to escape from the join. I w643d 352e t6 2n6w h6w t6 t4rn 6ff the gas so that I can unscrew both pipes? I hope that you are able to assist. I look forward to your reply? Many thanks Greg

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You cant "turn off the gas" in an AC system.

It is a recirculating loop of refrigerant. It is not a gas that's piped in from an outside source.

If you were able to re tighten the nut and prevent any more loss of refrigerant then it is possible to shut off the valve coming from the compressor, (known as the liquid line or high pressure side) while running the compressor, then when your gauges tell you that the compressor has force pumped all the refrigerant into the condenser, you can shut off the inlet side valve, (known as the vapor line or low pressure side) trapping all the refrigerant in the condenser.

Still you aren't shutting it off, you are simply moving all into the condenser.

By the way. it is highly illegal to release refrigerant into the atmosphere and can result in quite hefty fines if caught.

The EPA also requires that anyone dealing with R22, R410 or basically any other refrigerant (freon) have a certification from the EPA before doing so.

You also cannot purchase those refrigerants without the certification.

The only exception being R134A, that does not require the certification. (automotive refrigerant)

Also know that you cannot mix refrigerant types.
It will damage your system, void the warranty, and also is illegal.

With residential systems the different refrigerants can have drastically different pressures and temperatures. Whereas automotive systems using either R12 or R134A are relatively the same pressures and temps.

I said all that to say this.
You REALLY need a professionals assistance here.
Inevitably, you will have to have it anyway as since you cannot buy refrigerant without the certification, you have already lost some of the charge now, and possibly all of it, so it will have to be recharged in order to operate properly/at all.
You will have to have someone with the certification to do that work and get the refrigerant.

If by chance all the refrigerant has already leaked out, then you can certainly disconnect and move the unit. However, it is extremely important that no water or dirt get into the system through those pipes.

Even one grain of sand will cause restrictions and prevent proper operation.

I know this isn't the answer you were hoping for, but I must tell you the truth or I would be doing you wrong and cause the destruction of your unit.

If you want to save money, have a professional come and recover the refrigerant, disconnect the lines, and then when you have done all the other work, have them reinstall the lines, pull a vacuum on the system, and then recharge the system with the proper refrigerant.

Posted on Jan 26, 2009

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