Home » Public Forums » GMCnet » Re: R-22 roof air - its over my head. (Suction Side Pressure)
| Re: R-22 roof air - its over my head. [message #216051] |
Sun, 28 July 2013 22:49  |
Adrien G.
Messages: 474
Registered: May 2008
Location: Burns Flat, OK 73624
Karma: 1
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Steve Davick,
Checking back on this thread, I didn't see where you said what the low (suction) side pressure (with 22a Duracool) worked out best.
How many cans did you used?
I'm thinking of doing same.
Thanks.
Adrien & Jenny Genesoto
75 Glenbrook (26-3) Mods LS3.70 FD / Reaction Sys / 80mm Front&Intermidiate / Hydroboost / 16" Tires / Frame Rebuild / Interior Rebuild
Yuba City,Ca. Text 530-nine-3-three-3-nine-nine-6
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| Re: R-22 roof air - its over my head. [message #216052 is a reply to message #216051] |
Sun, 28 July 2013 23:11  |
Adrien G.
Messages: 474
Registered: May 2008
Location: Burns Flat, OK 73624
Karma: 1
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Steve,
Thanks, I see you covered my question. I must have been in the searching mode when you wrote your input. I do intend to hard solder the tap on the line, I've seen a clamp on tap not leak.
Adrien & Jenny Genesoto
75 Glenbrook (26-3) Mods LS3.70 FD / Reaction Sys / 80mm Front&Intermidiate / Hydroboost / 16" Tires / Frame Rebuild / Interior Rebuild
Yuba City,Ca. Text 530-nine-3-three-3-nine-nine-6
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| Re: R-22 roof air - its over my head. [message #216056 is a reply to message #216052] |
Sun, 28 July 2013 23:37 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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| Adrien G. wrote on Sun, 28 July 2013 21:11 |
Steve,
Thanks, I see you covered my question. I must have been in the searching mode when you wrote your input. I do intend to hard solder the tap on the line, I've seen a clamp on tap not leak.
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In time tap a line valves almost always leak.i can tell you I removed a lot of them as the leak source. They have there place but not as a permenant charge valve only a temporary valve.
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: [GMCnet] R-22 roof air - its over my head. [message #216057 is a reply to message #216054] |
Sun, 28 July 2013 23:37 |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
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Probably 2 8 ounce cans.
Larry Davick
On Jul 28, 2013, at 9:24 PM, A. <markbb1@netzero.com> wrote:
>
>
> ljdavick wrote on Sun, 28 July 2013 23:20
>> I started with the kit from Duracool for R-22 systems, but I didn't order the leak seal or the dryer. I ordered the Duracool kit before looking under the shroud, so I was surprised to see an existing saddle tap. It was clearly a leak source, as the copper line had some oil around the old tap.
>> I started off by pulling a vacuum and then charging the system with the R-22a and it seemed to freeze the line on the way up and then it didn't. I bled off a lot of the Duracool thinking the low pressure should be about 20 psi, like the dash air.
>> After my first attempt I ordered more R-22a, the dryer and the leak fix stuff. I installed this today and I'm hopeful it does the trick.
> It seems like you found a good low side pressure for 73F outside air. How much R-22a would you guess it would take to fully charge it, if you hadn't bled some off?
> --
> '73 23' Sequoia For Camping
> '73 23' CanyonLands For Sale
> UA (Upper Alabama)
> "Time is money. If you use YOUR time, you get to keep YOUR money."
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] R-22 roof air - its over my head. [message #228146 is a reply to message #216057] |
Fri, 01 November 2013 23:45 |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
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I promised a follow-up, but I never promised you a rose garden...
My roof air has a leak somewhere and the Duracool R-22 didn't seal the leak. Even the leak sealer didn't help. So now I'm starting to look for a replacement before next summer. Frankly I'm not surprised that it leaked. There was a tap-valve already in place when I tried the duracool, so it probably leaked before.
Does anyone have any experience, or thoughts, about Atwood Air Conditioners? Their literature mentions something about separate motors, so I’m thinking the interior fan might be independent from the compressor motor and fan. This might make for a quiet AC unit.
<http://www.atwoodmobile.com/images/air-conditioners-brochure.pdf>
<http://www.atwoodmobile.com/air-conditioners/rv-air-conditioners.asp>
Quiet, powerful, reliable and inexpensive. Am I asking too much?
Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] R-22 roof air - its over my head. [message #228148 is a reply to message #228146] |
Sat, 02 November 2013 01:13 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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Looks like a nice unit Larry. Is that the unit made in China? I would rather have it then a new Coleman. It has some nice features and looks good. It doesn't appear to be a low profile if that matters. The leak in your current unit is probably the tap a line valves they always leak. You could remove them and braze or silfos the pinhole with a propane torch if you don't have a welding rig and sweat in a small charging access valve if you prefer to keep the existing unit. The map gas cylinders produce more heat then the propane ones.
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: [GMCnet] R-22 roof air - its over my head. [message #228164 is a reply to message #228146] |
Sat, 02 November 2013 07:56 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Larry,
I clicked on your second link and on the right side of the page I noted:
Air Conditioners (non-ducted)
I clicked on that and downloaded:
http://www.atwoodmobile.com/manuals/ac/MPD%2015000%20AC_IOM%20NON-DUCTED_03%2001%202013%20rev%201.pdf
I scrolled through the document on page 18 I found the wiring diagram that shows "Compressor" an "Outside fan" and an "Inside fan."
Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
USA '75 Avion - Double Trouble TZE365V100426
AUS '75 Avion - The Blue Streak TZE365V100428
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Larry Davick
Sent: Friday, November 01, 2013 11:46 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] R-22 roof air - its over my head.
I promised a follow-up, but I never promised you a rose garden...
My roof air has a leak somewhere and the Duracool R-22 didn't seal the leak. Even the leak sealer didn't help. So now I'm starting
to look for a replacement before next summer. Frankly I'm not surprised that it leaked. There was a tap-valve already in place
when I tried the duracool, so it probably leaked before.
Does anyone have any experience, or thoughts, about Atwood Air Conditioners? Their literature mentions something about separate
motors, so I’m thinking the interior fan might be independent from the compressor motor and fan. This might make for a quiet
AC unit.
<http://www.atwoodmobile.com/images/air-conditioners-brochure.pdf>
<http://www.atwoodmobile.com/air-conditioners/rv-air-conditioners.asp>
Quiet, powerful, reliable and inexpensive. Am I asking too much?
--
Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] R-22 roof air - its over my head. [message #228187 is a reply to message #228164] |
Sat, 02 November 2013 12:25 |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
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Senior Member |
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Rob,
You say you worked for an American conglomerate overseas. You say it was Hamilton Standard. Your investigative skill lead me to believe you actually worked for the NSA!
Thanks for this. I wonder if the unit is any good.
Larry Davick
> On Nov 2, 2013, at 5:56 AM, "Rob Mueller" <robmueller@iinet.net.au> wrote:
>
> Larry,
>
> I clicked on your second link and on the right side of the page I noted:
>
> Air Conditioners (non-ducted)
>
> I clicked on that and downloaded:
>
> http://www.atwoodmobile.com/manuals/ac/MPD%2015000%20AC_IOM%20NON-DUCTED_03%2001%202013%20rev%201.pdf
>
> I scrolled through the document on page 18 I found the wiring diagram that shows "Compressor" an "Outside fan" and an "Inside fan."
>
> Regards,
> Rob M.
> The Pedantic Mechanic
> USAussie - Downunder
> USA '75 Avion - Double Trouble TZE365V100426
> AUS '75 Avion - The Blue Streak TZE365V100428
>
>
> -----Original Message-----
> From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Larry Davick
> Sent: Friday, November 01, 2013 11:46 PM
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] R-22 roof air - its over my head.
>
> I promised a follow-up, but I never promised you a rose garden...
>
> My roof air has a leak somewhere and the Duracool R-22 didn't seal the leak. Even the leak sealer didn't help. So now I'm starting
> to look for a replacement before next summer. Frankly I'm not surprised that it leaked. There was a tap-valve already in place
> when I tried the duracool, so it probably leaked before.
>
> Does anyone have any experience, or thoughts, about Atwood Air Conditioners? Their literature mentions something about separate
> motors, so I’m thinking the interior fan might be independent from the compressor motor and fan. This might make for a quiet
> AC unit.
>
> <http://www.atwoodmobile.com/images/air-conditioners-brochure.pdf>
> <http://www.atwoodmobile.com/air-conditioners/rv-air-conditioners.asp>
>
> Quiet, powerful, reliable and inexpensive. Am I asking too much?
> --
> Larry Davick
> A Mystery Machine
> 1976(ish) Palm Beach
> Fremont, Ca
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
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> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] R-22 roof air - its over my head. [message #228198 is a reply to message #228196] |
Sat, 02 November 2013 16:06 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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Senior Member |
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I like the 2 motors it is nice to have the condenser motor not slowing down when you put the evap fan on a lower speed. I saw somewhere that they were real popular in Australia that could be where they originated. Too bad you aren't closer I could most likely fix your existing unit. The last time I saw you was Treasure island.
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: [GMCnet] R-22 roof air - its over my head. [message #228200 is a reply to message #228198] |
Sat, 02 November 2013 16:34 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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G'day,
I think you're right re the Aussie connection. I'll check them out at the next NSW Caravan, Camping, RV and Holiday Supershow.
http://www.supershow.com.au/
Regards,
Rob M.
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of roy@gmcnet.org
Sent: Saturday, November 02, 2013 4:06 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] R-22 roof air - its over my head.
I like the 2 motors it is nice to have the condenser motor not slowing down when you put the evap fan on a lower speed. I saw
somewhere that they were real popular in Australia that could be where they originated. Too bad you aren't closer I could most
likely fix your existing unit. The last time I saw you was Treasure island.
--
Roy Keen
Minden,NV
76 X Glenbrook
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] R-22 roof air - its over my head. [message #228201 is a reply to message #228187] |
Sat, 02 November 2013 16:30 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Larry,
You're welcome.
Remember the last FBI Directors name? ;-)
Regards,
Rob M.
The Pedantic Mechanic
-----Original Message-----
From: Larry Davick
Rob,
You say you worked for an American conglomerate overseas. You say it was Hamilton Standard. Your investigative skill lead me to
believe you actually worked for the NSA!
Thanks for this. I wonder if the unit is any good.
Larry Davick
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GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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