[TheForge] O.T-. compressor wiring question

[Darrell]

Bob,
Are you sure it is the ISP? If you use Outlook/Outlook Express, click Tools,
Options, Security and see if the "Do not allow attachments" box is checked.
If it is, uncheck it and let your virus checker do the work.
If you do not have a virus checker, I have been using AVAST a free one and
so far I am happy with it.
Darrell

----- Original Message ----- 
From: "Bob Smolen" <boka at mwt.net>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Saturday, July 02, 2005 10:25 PM
Subject: Re: [TheForge] O.T-. compressor wiring question


> Darrel,
> Thanks. Unfortunately, my ISP puts a filter on so I dont get attachments.
> Bob
> ----- Original Message ----- 
> From: "Darrell" <darrell at machinemaster.com>
> To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> Sent: Wednesday, June 29, 2005 8:52 PM
> Subject: Re: [TheForge] O.T-. compressor wiring question
>
>
> > Bob,
> > I sent you a direct E mail with a PDF attachment.
> >
> > Darrell
> >
> > ----- Original Message ----- 
> > From: "Bob Smolen" <boka at mwt.net>
> > To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> > Sent: Tuesday, June 28, 2005 8:47 PM
> > Subject: [TheForge] O.T-. compressor wiring question
> >
> >
> > > I bought an older Ingersoll compressor from an estate. I did not see
it
> in
> > > operation but it looked to be in pretty good shape.. I believe a model
> > 30T.
> > > It has a 3 phase 7.5 h.p. motor.
> > >
> > > To test the unit,I hooked my shop 3 phase directly to the 3 wires on
the
> > > compressor motor and it started no problem. I now want to hook up
> properly
> > > and want advice on proper wiring to pressure switch and low oil
sensor.
> > > There is a switch and pressure gauge mounted to the tank. There is
also
> a
> > > low oil sensor for the compressor pump which is monted on the pump and
> the
> > > wired into the switch. There are two sets of wire that were
disconnected
> > > when the unit was moved from the last shop.One set is from the motor
and
> > has
> > > 3 wires.These are the wires to run the motor which I have verified
will
> > > start the motor when hooked up to shop power. There is also a set of 2
> > wires
> > > extending out of the switch (which I will decribe as enter/exit
because
> I
> > > guess they can lead current into or out of the switch).I do not see
> where
> > > any other wires could previouly could have come out of or  entered the
> > > switch box.
> > >
> > > The switch has 4 contacts(I believe) marked line, load,load, line.The
> oil
> > > sensor has 2 wires  entering the switch box. One oil sensor wire is
> simply
> > > connected to one of the 2 wires that exit/enter the switch. The other
> oil
> > > sensor wire is hooked to a "line" terminal.The second wire that
> > > enters/exits the switch is hooked to the load terminal of the switch.
> > >
> > > My uneducated guess is that one of the 3 current source lines  should
be
> > > connected to one of the wires extending from the switch. The other
> switch
> > > wire is then connected to one of the wires extending from the motor.
In
> > > other words, current goes into the switch and leaves the switch and
> enters
> > > one of the lines connected to the motor. The two remaining wires
coming
> > from
> > > source are connected to the 2 remaining motor wires. If the oil is low
> or
> > > the pressure sensor signals the switch to cut the motor, the one leg
of
> > the
> > > 3 phase hooked to the switch will  open, shutting down the cuurent in
> that
> > > leg and therby shutting down the motor. Does this make sense? If not,
> any
> > > suggestions?
> > >  Thanks,
> > > Bob
> > >
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