| Blower speed with type II air [message #215740] |
Fri, 26 July 2013 09:37  |
An87ttype
Messages: 157
Registered: September 2012
Karma: 0
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I would like to be able to adjust the blower speed when it's in the max air position. Its a type II so it only runs on high when in Max (recirculate). Did some searching but was unable to find any instructions. Has anybody done this before? The air is now working so good with the Duracool and fixing the vacuum lines that I need to turn it down!
Thanks all...
1975 Eleganza II
Hudson Valley NY
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| Re: [GMCnet] Blower speed with type II air [message #215754 is a reply to message #215740] |
Fri, 26 July 2013 10:37  |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Daryn,
It's been many years since I did it, but IIRC, there's an orange wire
between the fan switch on the left side of the HVAC control and a contact
on the right side. That's the source of power in the Max Air position.
Unplug that jumper and you'll gain full control of the fan.
Ken H.
On Jul 26, 2013 7:37 AM, "Daryn" <An87ttype@hotmail.com> wrote:
>
>
>
> I would like to be able to adjust the blower speed when it's in the max
air position. Its a type II so it only runs on high when in Max
(recirculate). Did some searching but was unable to find any instructions.
Has anybody done this before? The air is now working so good with the
Duracool and fixing the vacuum lines that I need to turn it down!
> Thanks all...
> --
> 1975 Eleganza II
> Hudson Valley NY
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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GMCnet mailing list
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Blower speed with type II air [message #215785 is a reply to message #215740] |
Fri, 26 July 2013 12:50 |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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Daryn,
Just move the switch back to regular AC and you have control of the blower. If it cools on max then it should cool in regular AC also. That is the way that GMC designed it although poorly in the 75 coaches. You don't need to make any changes. You don't have Type II air as that was available in 1977 coaches and newer. It was not available in the 75 coach unless you retro fitted it with all the hardware and controls.
JR Wright
78 Buskirk Stretch
75 Avion
Michigan
On Jul 26, 2013, at 10:37 AM, Daryn <An87ttype@hotmail.com> wrote:
>
>
> I would like to be able to adjust the blower speed when it's in the max air position. Its a type II so it only runs on high when in Max (recirculate). Did some searching but was unable to find any instructions. Has anybody done this before? The air is now working so good with the Duracool and fixing the vacuum lines that I need to turn it down!
> Thanks all...
> --
> 1975 Eleganza II
> Hudson Valley NY
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: Blower speed with type II air [message #215802 is a reply to message #215740] |
Fri, 26 July 2013 13:54 |
An87ttype
Messages: 157
Registered: September 2012
Karma: 0
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Senior Member |
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Yep...that's it! Thanks Ken. Unpluged the orange wire and I now have full control in all modes. I guess it's what you call Type 2 not Type II? I made a new vent for the bottom, as the original was missing, that really blows the air where I need it. It works great with the new charge of Duracool.
It's a small thing...but it makes me happy...thanks again all
1975 Eleganza II
Hudson Valley NY
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