A/C Machine Conversion

[Truckdriven]

I came across an old Robinair R12 A/C recovery, recycling, recharging machine. The machine is compatible with R134A freon that I would use it for. My question is, can I flush the R12 recovery tank and use it for R134A or are the tanks totally different?

[smorgan87]

Should be fine if you can flush the tank. Prolly not gonna be an easy task.

[Truckdriven]

Yea I'm not afraid of a little work if its going to save me buying a new tank. Thanks for the input!

[smorgan87]

Can use 20 lb propane tanks too.

[Truckdriven]

(05-28-2021 )smorgan87 Wrote:  Can use 20 lb propane tanks too.

How is that done? Does the tank need to be modified? I've heard of the idea before but never saw how it's done.

[smorgan87]

Change the valve on top.