507 ?

[zippy1]

Hi, I recently bought a new/used mach 2 from Kit Tronics in Canada. It was a return from a customer. The unit has only one issue according to Greer the salesman, it has a crushed line running to the cooling head.

I agreed that I would purchase the unit and have it repaired. I think it uses the r134a gas, but after some reading it seems it would be better to use this 507 gas.

I called a tech, he says replacing the smashed line is a snap and he would be happy to regas the system..If I could provide him with some answers.

Whath e needs to know is, How much gas to put in, at what pressure.. does the oil need changed, does the captube need changed

If someone could help me I would apperciate so so much, as it is currently just a paper weight

Thanks

 

[scorchio]

You might be better off sending to Extreme Prometeia.

Edited so Gollum can spam!

 

[fatty]

If you where in the UK it would be nice and easy for us to fix but your not

The oil does not need to be changed for R507 and the gas charge should be written on the sticker on the back around 54 grams of refrigerant but if it is a qualified tech doing the work he should be able to tune the charge to a heatload or via the super heat

 

[GoLLuM4444]

You might be better off sending to Extreme Prometeia.

Edited for truth.

Brilliant, in the sig it goes.

 

[zippy1]

If you where in the UK it would be nice and easy for us to fix but your not

The oil does not need to be changed for R507 and the gas charge should be written on the sticker on the back around 54 grams of refrigerant but if it is a qualified tech doing the work he should be able to tune the charge to a heatload or via the super heat

Ok, well I will mention it to him, hvac guys here are afraid to even touch the thing.. they want to know suction pressures and they all seem to think the oil stays in when its recharged, but others say it comes out..

:O my head is going to explode! to much information! I wish I had a set of gauges and some 507, id just try it and see what I could do. It is so depressing not to be able to use chiller..

 

[fatty]

Ok start at 30 - 40 psig ok run the unit charge to about 5psig vaccume and go from there under load keep it under 5 psig and you should be fine or if he doesn't have a heatload tune it for you best idle temps then add some more gas

 

[Gray Mole]

There's only one really active guy in Canada with real experience with Mach2 modding that I know of.

That's Gkiing in Vancouver or close to Vancouver anyways.

I mean you can take it to a Fridge guy and he might be able to help you, but if you could get it to Gkiing he'd be able to guarantee a proper job.

If you'd like, can PM him for you (different forum) and can try to hook you guys up

Otherwise, new suction, new filter, and tune to 10c of superheat 4-6" from the compressor on the suction line which would be roughly 5inhg on the low side. Laymans terms, charge until you're just barely frosting to, but not into the compressor and you don't have any liquid return to the compressor. (Audible 'plinking' noise)

That should give you roughly the max system capacity as it was.

Cheers

Gray

 

[zippy1]

I live in Ohio, The unit came from Canada..

 

[zippy1]

Ok, I will pass on the info, what is a spurercooler or whatever? something you add to help cooling?