While cleaning my crawlspace Sunday I notice water squirting out of my
We are on a service plan so a technician was out to the house within a
couple of hours.
He replace a screw on valve that was on top of an "EXTROL" expansion tank.
He said the purpose of this valve was to let the air out of the system.
That's about all I could get out of him... Mr. personality!
What I was trying to find out from him was what the two thumbscrews on the
top of this valve were for. one was black and one was red. Hot water had
been squirting out of the red thumbscrew.
When I tightened this thumbscrew the water stopped. I loosened it back up so
water dribbled out of it as I didn't know it closing it would cause pressure
to build up?
While I may never touch these again I would like to know the function of
these two thumbscrews?
should they be open or closed?
I don't know, but even after you get some good answers from others here, you
might want to call the manufacturer and get an owner's manual for the thing.
Or, see if they've got a web site where you can download a manual.
I understand the frustration, and as the service tech does have
contact with the public, it would be nice if his people skills were a
little sharper. However, he is not an instructor. His job is to fix
what's wrong. Being peppered by questions (you may have only asked a
few, but a few questions many times a day sucks up serious time) slows
You were right to put it back the way you found it. If you don't know
exactly what something does, it's nuts to attempt to adjust it. You
could easily cause a far bigger problem.
The Extrol tanks are pressurized and not meant to be fiddled with.
The manufacturer suggests a yearly inspection to make sure the preset
charge and tank operation are working properly.
It depends on the person. I could tell right away this guy was not a talker.
I would have liked a 5 minute explanation of what went wrong and what he was
Its the same with the IT service when they come in to service our company
Or my car mechanic. I feel part of the service is to explain what is going
That said, I make it a point not to hover over anyones shoulder while they
I leave them alone to do their job, then I try and find out what was going
Like I said I just think its their personality....
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.