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Topic: Now what, Auxiliary compressor blows pressure relief valve every minute?  (Read 493 times) previous topic - next topic

Now what, Auxiliary compressor blows pressure relief valve every minute?

The coach is hooked up to the 50 A supply, but I do not keep the compressor switched on when stored.

But I decided on the weekend to start the engine, generator, A/C units, aquahot and air compressor for a system check-up.

A/C units cool, but are very noisy, but this is a different story. Will replace them this winter.

When I started the air compressor to move the two slides out and then in again the yellow light never switched from intermittent to solid yellow.  The air compressor ran continuously, the pressure gauge did not show anything and the pressure relief valve  (on top of moisture relief valve on picture 450 on the right wall) popped every minute or so.
The compressor obviously worked, otherwise there would be no popping sound. So somewhere there must be a blockage.
The white line from the compressor discharge side goes to the moisture relief valve, and from there into to the back of the desiccant container on the left side of the picture inside the aluminum angle iron. From there the air comes out on the front of the desiccant container in the black hose going into another moisture separator (reddish looking).
This looked like a strange setup to me, and a call to one of my two forum advisors (can not give out their names, but one is of Swedish descent and knows everything about control systems and the other one speaks German and knows everything about internal combustion engines that there is to know) confirmed that the desiccant container is the most likely culprit.
Removed it, (see picture 928), it was totally blocked. I then rerouted the air line and that solved the problem.

I found the model of the 1 gal desiccant container on the internet, prices vary from $ 100 to m$ 200, and can certainly buy and install one if it makes sense.

Has anyone else this unit installed, is it an after market installation of a previous owner?

Regards

Klaus


The world is not interested in the storms you encountered, but whether or not you brought in the ship.
Raul Armesto

2003 U 320 4020 Unit 6145

Re: Now what, Auxiliary compressor blows pressure relief valve every minute?

Reply #1 –
Quote from: kepeters –


Has anyone else this unit installed, is it an after market installation of a previous owner?



That additional "ATO Air" desiccant container is definitely aftermarket.

For DIY desiccant in the OEM bowl:

Desiccant option for the HWH system

For replacement aux compressor bowls (part numbers) and pictures that might help verify your existing bowls are correctly plumbed on a 2003:

HWH Filters and Bowls
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Now what, Auxiliary compressor blows pressure relief valve every minute?

Reply #2 –
Ah, since your coach is between 6060 and 6272, be sure this modification has been done (let me know if the link doesn't show anything)

https://www.foreforums.com/index.php?action=media;sa=media;in=3319
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Now what, Auxiliary compressor blows pressure relief valve every minute?

Reply #3 –
Quote from: Michelle –
(let me know if the link doesn't show anything)

The link works.  ^.^d
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Surely, no age has been more fraught with insecurity than our own present time."

Re: Now what, Auxiliary compressor blows pressure relief valve every minute?

Reply #5 –
Link works on my computer

Regards

Klaus
The world is not interested in the storms you encountered, but whether or not you brought in the ship.
Raul Armesto

2003 U 320 4020 Unit 6145

Re: Now what, Auxiliary compressor blows pressure relief valve every minute?

Reply #6 –
Well it works but access is denied.

Seems like Forum server is very slow.  Struggles to complete picture uploads.
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: Now what, Auxiliary compressor blows pressure relief valve every minute?

Reply #7 –
Hmm...my compressor does not have an on/off switch
Peter    Alberta Canada
'98 U320 40'  Build 5359 M11 450 HP, Aqua hot, Blu Ox

Re: Now what, Auxiliary compressor blows pressure relief valve every minute?

Reply #8 –
Added by a previous owner. If yours is wired like the drawing put an on/off switch in the line with the fuse.
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: Now what, Auxiliary compressor blows pressure relief valve every minute?

Reply #9 –
Quote from: Roger & Susan in Home2 –
This link doesn't work


It's a direct link to a topic on the forum.  The other was a link to something in the media which may or may not have had permissions issues (does not, since Chuck can see it).

Quote from: Roger & Susan in Home2 –
Well it works but access is denied.

Seems like Forum server is very slow.  Struggles to complete picture uploads.

You're having ISP, connection, or browser issues.
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320