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Air compressor switch

Switch for a sears air compressor the switch says 80 tocut on 100to cut off. furnas cac4220-1. 1 phase thanks

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That means that when the switch is turned on , and the complessor is pluged into a power outlet, the electric motor will start when the air pressure in the tank drops below 80 psi.and the motor will stop when the pressure reaches 100 psi.

please rate this,
Rob...

Posted on Sep 19, 2008

  • biermatrim Jan 22, 2011

    How do you adjust the cut in pressure?

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I have an ingersol rand 2420n5 t30 and i want to convert it from single phase to 3 phase any help thanks


Hi robles212
To convert your T-30 to single phase you will have to do one of two things.
1. Change the motor to a single phase motor
2. Buy and install a "Phase Converter" to convert 3 phase to single phase
Please rate me
Bud

Oct 08, 2012 | Ingersoll Rand Type 30 Reciprocating Air...

1 Answer

I have a brand new IR compressor model 2475N7.5 with a 7.5 hp 460v 3 ph motor. is it possible to convert it to a single phase power supply? or should i just exchange it? ... I ordered it thru Northern Tool...


When you google home made 3 phase converters, you will find many ways to make use of 220v single phase instead, however you are limited as to the hp that the motor will produce. If you spin the motor first then apply 220v, the motor will continue to turn at much reduced hp. You need full power to turn a type 30 pump depending on pulley combination/ setup. Best to return the unit and get one that will run on 220v single phase. It will most likely consume more power to do the same work however it would cost a great deal to install 3 phase. Most likely not even available at all. Many years ago, I worked at Sears and happened to see an electrician coming down from roof access of building. He told me that sears had a 3 phase generator being turned by a 220v single phase motor to run an air conditioning unit. He said that it worked quite well. Does not sound cost effective.

Jan 08, 2011 | Ingersoll Rand - Rand Type - 30...

1 Answer

How dose the unloader work on a T30 compresser ? T30 compresser has small air leak sound comming from intake ? Is there a flow chart of how ther air is compressed T30 ?


There is no unloader on a 2340N5 compressor. However there is a pressure switch that cuts the motor on an off. Located inside of the pressure switch is an air bleeder. When the pressure switch is opened the motor is shut off. A small lever in the pressure switch pushes down on the bleeder valve which lets the air on the compressor head to be released. This allows the the compressor to start up freely. There should be some air heard bleeding off at the pressure switch. If air continues to bleed off all the time the tank check valve is leaking.

If air is leaking back thru the compressor an air leak sound coming from around the air filter (intake) you have a valve leaking allowing trapped pressure to escape thru the air filter (Intake).

I would search the web for a flow chart. I have not seen one.

Nov 16, 2010 | Ingersoll Rand Type 30 Reciprocating Air...

1 Answer

Need to adjust Sq D 9013 GHG2


Here are the ranges your your pressure switch.
9013GHG2
Fluids / Pressure controlled Water or Air
Cut-0ut PSIG (bar) 60-200
Cut-In PSIG (bar) 40-170
Weight lbs (kg) 2 lbs (0.91) 2 lbs (0.91)

First set the cut out pressure turning the nut on the spring. To raise the pressure turn nut clockwise depressing the spring. Adjust this so you device stops at 110 psi. Remember when you raise the cutoutpressure the cut in pressure will also raise. When you get the cut out pressure at 110, then your cut in presure will be approx 90 psi (current 60psi +30psi you raised the cut out pressure). Now you can lower the cut in pressure but backing out the differential nut, the smaller size. Until the device cuts out aht the 80psi you want.

Jul 02, 2010 | Square D 9013FHG14J52M1X Air Compressor...

1 Answer

My compressor runs upto 145 psi before it shuts off, which is fine, but drains down to 80 psi before it kicks it, I want it to kick in around 100 or 105 psi, under the cover are two screws one is plastic...


Usually you have a screw set in the middle and one set off to the right or left. One (normally center), will adjust the cut-in and cut-out pressure, the other will only effect the cut-out. Clock-wise to raise for both screws.
I am not positive on your make of switch but it is probably a Furnas or similar brand switch.

To get the desired setting you will need to adjust both screws.First you will need to lower the "Cut-out" screw this should be the plastic screw. Turn this counter clock-wise. You will need to drop it the same amount that you want to raise the "Cut-in" pressure.
Second turn the "Cut-in" "Cut-out" screw clock wise to raise both the settings.
If you raise the "Cut-in" psi without lowering the other first you will end up with a "Cut-out"pressure of 165 psi.
Since I am not positive on the brand check your setting after your first adjustment to verify you are changing the "Cut-out" only psi. Make small adjustments, 1/2 to 1 turn of the screw.

If you have any problems please don't hesitate to ask for a clarification. Hope this helps.

Jun 09, 2010 | Air & Gas Compressors

1 Answer

I would like to connect a pressure switch to the motor starter


hi! there, single phase compressor motor need a starting capacitor base on the rated capacity in horse power,you can check this on the tag of the compressor motor how many horsepower was indicated,it should be for single phase motor starting capacitor has a capacity of micro farads.for a 1 horsepower = 15 to 18 micro farads stating capacitor if you have more than 1 horsepower you can basically proportion the value of capacitor you need or ask the dealer how much capacitor you need on your motor the connection of pressure switch with a four terminal should be connected both on common line L1 and running capacitor line L2 .if you open the cover of pressure switch there are 4 terminals,2 terminals are connected when normally close or no pressure they connected on series connection on the common line one terminal connected to common line of the compressor and the other terminal on L1 to the pushbutton switch to L1 supply line.the 2 other terminals also connected in series withe line capacitors L2 to yhr power supply line.hope this will help you a lot.just rate my fix thanks a lot.

Apr 20, 2010 | Air & Gas Compressors

2 Answers

IR 2475E Wont start up 220 everywhere No LOP switch


did you check for a motor reset button on the motor??

Feb 20, 2010 | Ingersoll Rand - Rand Type - 30...

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