[AT] Air compressor failure

Tue Dec 7 09:23:06 PST 2021

That sounds to me like the springs are weak or there is just enough binding
on the pivots that when the pressure rises there isn't enough 'snap' to
make the circuit. Or both.

When I did field service on refrigeration and ice machines, my favorite
invoice to write was, equipment failed to start due to cockroach in
contactor. Little buggers get themselves right in the contacts at the
moment the unit was to start. Of course another restaurant off my dining
list.

On Tue, Dec 7, 2021, 8:58 AM Spencer Yost <spencer at rdfarms.com> wrote:

> I have the exact opposite problem (but probably same root cause)  with my
> water well pressure switch.  Every once in a blue moon it will fail to cut
> the pump on when the pressure drops below it’s rated psi. All I have to do
> is cut the power, run a little emery cloth over the points, and then all is
> well for another long while.
>
> PS:  Cut the power first!
>
> Spencer
>
> Sent from my iPhone
>
> > On Dec 7, 2021, at 9:39 AM, deanvp at att.net wrote:
> > The over pressure release valve does work when pulled manually  but is
> not releasing by itself up to 135 lbs pressure,   I don't yet know when it
> is supposed to automatically release.   I'm going to check a few things
> that you folks have asked about and see if any are contributing such as low
> compressor oil, plugged intake filter or a leaking outlet line and see what
> happens. Thanks for the suggestions.
> >
> >
> > Dean VP
> > Snohomish, WA 98290
> > "Socialism is a philosophy of failure, the creed of ignorance, and
> gospel of envy, its inherent virtue is the equal sharing of misery."
> > ..Winston Churchill...
> >
> > -----Original Message-----
> > From: AT <at-bounces at lists.antique-tractor.com> On Behalf Of Henry
> Miller
> > Sent: Tuesday, December 7, 2021 5:17 AM
> > To: at at lists.antique-tractor.com
> > Subject: Re: [AT] Air compressor failure
> >
> > Many large compressors like that pump up to 170psi.  Can you find a
> label someplace?
> >
> > Does the overpressure release valve release air when pulled, that is
> your backup in case the switch fails, if it works just let it run a little
> longer.
> >
> > --
> >  Henry Miller
> >  hank at millerfarm.com
> >
> > On Mon, Dec 6, 2021, at 22:57, deanvp at att.net wrote:
> >> Need some help relative to a Husky 60 gallon , 7 HP air compressor.  I
> >> am shop sitting the shop in AZ of my recently deceased friend until
> >> his three sons can decide what they are going to do with the 10
> >> tractors, 5 highly modified garden tractors and a fully stocked shop
> >> with a huge quantity of hand tools.  In return for doing the shop
> >> sitting I get to use the shop to do the work on my 1935 JD B and JD
> Garden Tractor.
> >> Upon the very first entry I noticed the air compressor was running too
> >> long. I shut the breaker off and am not trying to figure out of there
> >> is something I can do to fix it. My first thought is the pressure
> >> switch isn’t working right.   But….   I have never worked on this
> >> version. Attached is the picture of the air compressor. I have not yet
> >> found a operators manual or service manual to guide me through some
> >> trouble shooting.  I am pretty sure this was working at least up to
> >> the end of August and then my friend got confined to the house due to
> >> illness  and eventually died October 6.   I arrived in the middle of
> >> November to take first use of the shop again.  So the compressor sat
> >> unused for at least  couple months which may have something to do with
> >> it not working now.  It does pump up to 135 lbs pressure but does not
> >> shut off.  I set my compressor at home to shit off at 120 PSI.   So
> >> 135PSI seems high to me.   If I open the pressure switch is there some
> >> adjustments in there or is it maybe just stuck that needs to be
> >> unstuck?    Anyone with experience with this brand of air compressor?
> >> I don’t want to create more expense because I don’t know what I am
> >> doing.   Here is a picture. Note: The red dial on top of the pressure
> >> control does work in that it shuts down the compressor when moved to
> >> the Off position. When moved to the Auto position it just continues
> >> running.
> >>
> >>
> >>
> >> Dean VP
> >>
> >> Snohomish, WA 98290
> >>
> >> "Socialism is a philosophy of failure, the creed of ignorance, and
> >> gospel of envy, its inherent virtue is the equal sharing of misery."
> >>
> >> ..Winston Churchill...
> >>
> >>
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> >>
> >> Attachments:
> >> * 20211206_152017a.jpg
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