leak testing an absorber

[gfhelper]

We are thinking about leak testing our absorber(McQuay 500 ton), I was wondering how much feron to add to the unit in order to get a proper leak test done.

[absrbrtek]

Ok so now your high temp generater problem is an air leak? 30#s of R22 usually does it backed up with nitrogen to around 5 PSI. Id check the rupture disk first if its the Iconel type.

Originally posted by gfhelper
We are thinking about leak testing our absorber(McQuay 500 ton), I was wondering how much feron to add to the unit in order to get a proper leak test done.

[chillrdude]

dont forget the paladium cells, on the one McQuay direct fired I have had the pleasure of working on, each one started leaking over time, replaced a couple of them and then finally gave up, just capped them off and check for hydrogen now and then, so far no problems.

Dude

[chillerguru]

I normally use about 30# of r-22 on a couple of 500 ton Carrier direct fired absorbers. Which does the job. On the 1500 ton double effect chillers I take care of I use 100# of r-22, which also works good. You can pump it up with nitrogen to about 12#. Just double check for a rupture disc. Normally single feffect machines dont have rupture disc depending on the manufacture or customers request.

[gfhelper]

well we are going to try and rule out that we have an air leak, and yes we have also closed off our PD cell assemblies. I have not been able to find any info from the manufactor on our burner as to how to make it run cooler as was offered by some else. It is a Gordon - Piatt burner.

Our rupture disk is made by BS&B it is a JRS type.

[Edited by gfhelper on 07-12-2004 at 10:13 AM]

[double bubble]

one time I had the bright idea to leak check with nitrogen and an ultasonic leak detector .