Automotive Air Conditioning Information Forum (Archives)

Provided by www.ACkits.com

We've updated our forums!
Click here to visit the new forum

Archive Home

Search Auto AC Forum Archives

Refrigerant recovery machine

johnbkobb on Fri September 28, 2012 9:41 AM User is offline

I'm thinking about purchasing a small portable recovery machine. Would like it capable of 80% shutoff and oil recovery separation. This will be mainly for my own personal use and only R134a recovery. I know there are small units that have the auto shut off at 80% capacity but do any have the oil separation capability? Looking for suggestions on what MFG and Model I should look at and any other suggestions. I already have the manifold gages , vacuum pump, digital weigh scale to 220 lbs (.25 oz increments), 2 oz oil/dye injector, Schrader valve removal tool (capable of removal without opening the system), O-ring kit, flush kit, EPA 608 & 609 Certification. Would also like any info on dry nitrogen tanks and setups.

HECAT on Fri September 28, 2012 2:51 PM User is offline

The small portables are recovery only. The oil separation process is the "recycle" in the bigger recovery and recycle machines.

We use nitrogen tanks from our local welding gas vendor. You will need a tank regulator to reduce the tank pressure. Tip: an oxygen regulator is a lot cheaper than a nitrogen regulator.

-------------------------



HECAT: www.hecatinc.com You support the Forum when you consider www.ackits.com for your a/c parts.

FLUSHING TECHNICAL PAPER vs2.pdf 

johnbkobb on Fri September 28, 2012 6:29 PM User is offline

Quote
Originally posted by: HECAT


We use nitrogen tanks from our local welding gas vendor. You will need a tank regulator to reduce the tank pressure. Tip: an oxygen regulator is a lot cheaper than a nitrogen regulator.

So I should be able to use the Ox regulator from my Ox A torch set without any problem? How does the Ox hose match up? Can I use an Ox hose with an adapter to the yellow service hose of my manifold? What kind of adapter would I need for that?

Edited: Fri September 28, 2012 at 6:37 PM by johnbkobb

me4get on Sun September 30, 2012 12:44 AM User is offlineView users profile

NEVER use an OX reg for anything But OX.

mk378 on Sun September 30, 2012 1:04 PM User is offline

DO NOT use oxygen for pressure testing. Oxygen plus oil under pressure is likely to explode. I think what HECAT was saying was to buy a new oxygen regulator and change the inlet fitting on it so it fits a nitrogen bottle.

johnbkobb on Sun September 30, 2012 3:41 PM User is offline

Quote
Originally posted by: mk378
DO NOT use oxygen for pressure testing. Oxygen plus oil under pressure is likely to explode. I think what HECAT was saying was to buy a new oxygen regulator and change the inlet fitting on it so it fits a nitrogen bottle.

Yes, that's what my understanding of what the statement was. I know that pressure testing is supposed to be done with dry nitrogen but what I'm not clear on is what the pressure of a full nitrogen cylinder would be and at what pressure the A/C system should be brought to for testing for leaks,so I would like to know what size output regulator gauge I should have. Ex. if my gauge only could regulate to 100 psi and the A/C system should have a pressure of 200 psi to check for leaks then I would need the outlet gauge to be able to regulate the output to the A/C to 200 psi. I know that all Ox gauges do not have the outlet gauge that has the same regulation capability. Some have a 200 psi gauge and others may only have a 100 psi gauge.

mk378 on Sun September 30, 2012 7:54 PM User is offline

Some people test at up to 200 psi, but some evaporators might blow out above 150 psi. In normal operation, the pressure on the low side is never much above 150.

HECAT on Mon October 01, 2012 2:54 PM User is offline

The nitrogen tanks I rent/buy come with a 2500 PSI charge. The bottled gas regulator I use has 2 gauges included, and fits the nitrogen tank without the need for any adapters. We have this reg set at 100 PSI.

-------------------------



HECAT: www.hecatinc.com You support the Forum when you consider www.ackits.com for your a/c parts.

FLUSHING TECHNICAL PAPER vs2.pdf 

punk on Mon October 01, 2012 3:17 PM User is offlineView users profile

i think your right urs idea is gud........

-------------------------
wedding cars | Rolls royce phantom hire

Back to Automotive Air Conditioning Forum

We've updated our forums!
Click here to visit the new forum

Archive Home

Copyright © 2016 Arizona Mobile Air Inc.