zephyrsailor
New member
can someone enlighten me on the concept of re-gassing fridge after i chance motor?
and is it expensive?
or can i do it my self?
etc etc
and is it expensive?
or can i do it my self?
etc etc
fridge again
- Thread starter zephyrsailor
- Start date
philip_stevens
Active member
Going from the last question up,
- no, you cannot do it yourself. It involves pressurised CFC (or its "green" version) type gas, that has to be accounted for.
- relatively expensive, as if you have a new compressor that needs gassing, it first has to be evacuated (vacuum) to take all air and humidity out of the system and especially the oil. This can take up to 24 hours.
- therefore it is a specialised task to connect up, and maybe have to silver solder the joints, evacuate the compressor, condenser and evaporator in one complete assembly. Pressure gauges then have to be connected to ascertain that the correct weight of gas has been put into the system.
Not just that, but the correct gas has to be put in. Old type R12 and R22 is now banned, except where it is already in use in commercial plant. R134a and other new "green" gases are now all that can be used. You will see what type of gas your compressor takes, as it should be on a label on the compressor body.
If you have a separate motor from your compressor, that is a different matter as you can just go ahead and change the motor - unless all the gas has been lost from the compressor. Then you run into the problems as I have put above.
I could copy pages out of my Thermo-King service manual, but that would be even more boring. For info, there are 5 other gases in this book - 502,401B,402A,403B, and 404A - and there are probably more new gases.
regards,
Philip
- no, you cannot do it yourself. It involves pressurised CFC (or its "green" version) type gas, that has to be accounted for.
- relatively expensive, as if you have a new compressor that needs gassing, it first has to be evacuated (vacuum) to take all air and humidity out of the system and especially the oil. This can take up to 24 hours.
- therefore it is a specialised task to connect up, and maybe have to silver solder the joints, evacuate the compressor, condenser and evaporator in one complete assembly. Pressure gauges then have to be connected to ascertain that the correct weight of gas has been put into the system.
Not just that, but the correct gas has to be put in. Old type R12 and R22 is now banned, except where it is already in use in commercial plant. R134a and other new "green" gases are now all that can be used. You will see what type of gas your compressor takes, as it should be on a label on the compressor body.
If you have a separate motor from your compressor, that is a different matter as you can just go ahead and change the motor - unless all the gas has been lost from the compressor. Then you run into the problems as I have put above.
I could copy pages out of my Thermo-King service manual, but that would be even more boring. For info, there are 5 other gases in this book - 502,401B,402A,403B, and 404A - and there are probably more new gases.
regards,
Philip
zephyrsailor
New member
i confused!
where is the gas?
can change motor with out gas escaping?
where is the gas?
can change motor with out gas escaping?
zephyrsailor
New member
i confused!
where is the gas?
can change motor with out gas escaping?
where is the gas?
can change motor with out gas escaping?
philip_stevens
Active member
Some very old fridge systems had a seperate compressor and motor. The drive was a belt, but these systems are as old as the Ark. Another oldish commercial comp/motor had a motor that could be removed, leaving a coupling with a lip seal to keep the gas in. As I said, these systems are VERY old, and probably would not be seen these days.
If you have to replace the compressor/motor assembly, all the gas may]/i] escape unless there were non return valves in the couplings.
For further information, you could contact one of the fridge suppliers who advertise in the PBO. They would be able to give you a definitive answer.
I was going to buy a used fridge system that had been removed from a boat - until I learned that they had lost the gas charge, and the gas in question was R12, and the system would need to be evacuated. I declined the offer, as I had been quoted over £120 for the work to vacuum and re-gas.
I am now going to buy a system to install in the coolbox, when I go to the boat show this weekend.
regards,
Philip
If you have to replace the compressor/motor assembly, all the gas may]/i] escape unless there were non return valves in the couplings.
For further information, you could contact one of the fridge suppliers who advertise in the PBO. They would be able to give you a definitive answer.
I was going to buy a used fridge system that had been removed from a boat - until I learned that they had lost the gas charge, and the gas in question was R12, and the system would need to be evacuated. I declined the offer, as I had been quoted over £120 for the work to vacuum and re-gas.
I am now going to buy a system to install in the coolbox, when I go to the boat show this weekend.
regards,
Philip
zephyrsailor
New member
my system is in my cool box!
compressor motor jobby is under a seat
compressor motor jobby is under a seat
philip_stevens
Active member
I think, then, it would be best for you to contact one of the specialist fridge companies that advertise in PBO for more info on your system - the same as I intend to fit this winter.
regards,
Philip
regards,
Philip
jollyjacktar
New member
Are you serious?
I think that this is a put on otherwise I can not believe that you would be able to prevent yourself from falling overboard.
I think that this is a put on otherwise I can not believe that you would be able to prevent yourself from falling overboard.
zephyrsailor
New member
got it sorted now thanks
mended it with random gas required!
mended it with random gas required!
