Rebuildable?
August 23rd, 2022, 04:35 PM
#1
Registered User
Thread Starter
Join Date: Sep 2009
Posts: 2,567
Rebuildable?
Just changed out the evaporator sight glass on the AC in my 68. Are these things able to be rejuvenated and put back on the shelf or just get pitched? It was restricting the flow so I’m assuming it’s clogged with contaminates.
August 23rd, 2022, 06:15 PM
#2
Oldsdruid
Join Date: Dec 2007
Location: Southside Vajenya
Posts: 10,305
Since their major function is removing moisture and contaminants I'll say they're designed to be disposable. I suppose you could empty the spent desiccant out thru the sight glass hole and refill it, but time you've done all that about as easy to install a new one if you can find it.
At powerplant we had regenerative desiccant gas dryers that utilized two tower streams. When one tower is onstream drying whatever gas, the other one is offstream, using heating elements to dry the moisture out of the desiccant pellets. After a scheduled amount of time the thing will switch out the towers. They worked well for most part to desiccate and decontaminate hydrogen gas and instrument-spec dry air. However, we know the General would never have spent that kind of money.
The instrument air dryers operated at 300 psi. They'd scare the crap out of you when those towers switched and depressurized. LOUD! Each had its own little building which the insulation and siding crew had built too damn small to easily access and check the equipment. I had wiggled around to the back side of the thing about 2am one night to check outlet pressure and it switched while I was back there. I about climbed the thing😬.
I made the siding crew cut me a door on back wall of the building so I could open it and check that pressure. Very conveniently, it switched towers while they were doing that and they ran away screaming. Heh, heh, heh.
At powerplant we had regenerative desiccant gas dryers that utilized two tower streams. When one tower is onstream drying whatever gas, the other one is offstream, using heating elements to dry the moisture out of the desiccant pellets. After a scheduled amount of time the thing will switch out the towers. They worked well for most part to desiccate and decontaminate hydrogen gas and instrument-spec dry air. However, we know the General would never have spent that kind of money.
The instrument air dryers operated at 300 psi. They'd scare the crap out of you when those towers switched and depressurized. LOUD! Each had its own little building which the insulation and siding crew had built too damn small to easily access and check the equipment. I had wiggled around to the back side of the thing about 2am one night to check outlet pressure and it switched while I was back there. I about climbed the thing😬.
I made the siding crew cut me a door on back wall of the building so I could open it and check that pressure. Very conveniently, it switched towers while they were doing that and they ran away screaming. Heh, heh, heh.
August 24th, 2022, 06:36 PM
#6
Registered User
Join Date: Jan 2014
Location: Michigan
Posts: 142
I have sent a few to Original Air Group and they did a good job.
https://www.originalair.com/
https://www.originalair.com/
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