a simple low pressure alarm connected to their central station would have saved all the resetting and draining......could certainly pay for itself in short order. Garth ----- Original Message ----- From: "Tom Duross" <[email protected]> To: <[email protected]> Sent: Thursday, July 09, 2009 11:39 AM Subject: RE: Dry System Air Question
> Very little grooved, just repairs made in the last 10+ years. It's all > Sch40 threaded, 1"-4", threaded flanges. This is just our 3rd year here, > last year when we did a full flood we attached a pump and took it to 200 > looking for leaks but couldn't find anything. I'm thinking the leak is > concealed behind old plaster walls. It does an unheated attic, > traditional > piping arrangement. I'm guessing 40 years old with a 15 year old dry > valve > and compressor. I'm told the compressor runs about once a day for a few > minutes. They lost power last Friday and the valve tripped about 4 AM on > the 4th, I spent most of the morning chasing low points and resetting it. > The compressor was tripped out so I'm thinking it went out on overload > from > running so long, I did mention it shouldn't and suggested rewiring it to > the > generator. It's a long term care facility right near NFPA in Quincy. I'm > aware of the allowable leakage but sometimes (like this) have a hard time > applying it. I did consider a scent test but if we couldn't even find a > drip at 200, would this help? > I'm getting splinters scratching my head but I have tweezers. > TD > > > > We have done this a couple times and have always replaced the compressor. > However, a word of warning inspired by learning the hard way. Assuming > this > is a grooved system, when you drop the pressure the entire thing can start > leaking like a sieve. Older couplings can be a little brittle and less > resilient. They just don't like to seal correctly under the lower > pressure. > > Best of luck! > > Lori Kitchen > > _______________________________________________ > Sprinklerforum mailing list > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
