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best way to test high temp, limits Paul C 10-17-2006
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Posted by Paul C on October 17, 2006, 6:18 am
hvac apprentice sent to pm package unit.
heat is from air to air heat exchange and the air in facility is very
dusty (printing presses). what is the best way to test high temp limit
in this case?
Thank You in advance.


Posted by Power's Mechanical on October 17, 2006, 4:40 pm

Paul C wrote:
> hvac apprentice sent to pm package unit.
> heat is from air to air heat exchange and the air in facility is very
> dusty (printing presses). what is the best way to test high temp limit
> in this case?
> Thank You in advance.

The best way would be send a real tech out. One that has sense to put
a temperature probe near the limit, disable the fan, and light the
fire. Watch and see if and at what temperature it trips at. The
apprentice should be trained on preforming PMs before thrown to the
wolves to avoid damaging the equipment or worse, himself.


Posted by Bubba on October 17, 2006, 5:25 pm
On Tue, 17 Oct 2006 06:18:41 -0400, MrSosa@webtv.net (Paul C) wrote:

>hvac apprentice sent to pm package unit.
>heat is from air to air heat exchange and the air in facility is very
>dusty (printing presses). what is the best way to test high temp limit
>in this case?
>Thank You in advance.

Replace it silly. If you dont know how to test it, then its gotta be
bad. Replace the thermostat while you're at it.
Install a few of those reverseflo@ductboosters too, just for good
measure.
Bubba

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