Question about Craftsman 3 gal. Air Compressor, 1.5 hp, Horizontal k

2 Answers

Automatic shut off craftsman 1.5 hp compressor

When the pressure increases towars the red zone the auo shutoff never kicks in. The pressure builds until i turn it off. It has never been used. Is there anything i can do?

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I bet you that it is the pressure switch is defective or out of adjustment.

Posted on Oct 12, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 828 Answers

It sounds like the pressure switch is defective or the unit is miss-wired . If you have the owners manual check for a wiring diagram and follow the chart to try and locate the problem. If it is new return it to the place of purchase and have them fix or replace it.

Posted on Sep 09, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Pressure won't re-build after cut-in


So you are saying that it starts and builds pressure and then shuts off, then when it comes back on again, there is no pressure? Sounds like the unloader valve is sticking open.

Aug 08, 2013 | Craftsman 3 gal. Air Compressor, 1 hp,...

1 Answer

I have a 3 gal 1 hp air compressor and it will only build pressure to 27 lbs.


If it makes hesitation sounds just before shutting off, you need to oil the compressor as per the manual. This is the most common problem.
If it is kicking on and off normally, you need to adjust the pressure relay. The instructions are under the cover.

May 14, 2011 | Craftsman 3 gal. Air Compressor, 1 hp,...

1 Answer

My compressor will not go over 20 psi i have a craftsman 921 4 gal 125 psi compressor and it will not build past 20 psi i do not know how to get to the pistons and stuff what do i do?


The problem with compressors not building pressure is usually a bad pressure switch or bad regulator. Does the motor shut off at 20psi or does it continue running and not build pressure? If the motor continues to run with no increase in pressure, the you should go over the machine looking for air leaks from your regulator back all the way to the motor. Any air leak while the compressor is running can cause the pressure to "peak" way before the intended shutoff that it is regulated to.

Mar 01, 2011 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

1 Answer

What is the ut out pressure, the motor keeps running past the red zone of the guage, when would it stop automatically?


The cut out pressure is adjustable. Normally, it is not above 120 PSI. It is adjustable with a screw on the cutout switch.

Oct 03, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

1 Answer

Craftsman 3 gal., 1.5 hp air compressor: won't auto shut off, builds only 40 lbs pressure, air leaks from the 2 holes in oil filler cap?


The compressor will not auto shut off until it reaches the preset pressure which is usually around 100-130 psi - your problem is leakage of air from the oil filler cap suggesting that you have a failed internal valve.

Sep 24, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

1 Answer

Craftsman air compressor spitting sparks behind fan


If it is an oil type make sure it has oil. If it is the dry type you need a new compressor.

Jul 29, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

1 Answer

Compressor shuts off before reaching max pressure


Yes,but if the max is 125 you don't want to increase it above 110 and set off the pressure relief valve.

Jul 21, 2009 | Craftsman 1 Hp, 4 Gal. Air Compressor

1 Answer

Cycling compressor


The pressure switch will shut off when the set pressure is obtained. Usually about 100 to 120 lbs. If the compressor stops at lower pressure than mentioned you may try to adjust the pressure by looking under the switch cover for adjustment screw/nut.(no more than a few turns) Increase pressure by increasing spring tension. Quick cycling is usually caused by air leaking from tubing, drain valve or check valve. After compressor shuts off unplug it from the outlet and spray soapy water on all fittings and drain valve. Repair leaks and test for quick cycling, however the compressor should reach 100-120 before shutting off. Some small compressors have a thermal reset but that usually takes a few minutes to reset. Pressure switch is defective if it shuts off before setting mentioned. Enjoy

Dec 11, 2008 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

Not finding what you are looking for?
Craftsman 3 gal. Air Compressor, 1.5 hp, Horizontal k Logo

Related Topics:

370 people viewed this question

Ask a Question

Usually answered in minutes!

Top Craftsman Air & Gas Compressors Experts

John Trevino

Level 3 Expert

1378 Answers

JOHN LAPIER

Level 3 Expert

2384 Answers

Brad Brown

Level 3 Expert

13530 Answers

Are you a Craftsman Air and Gas Compressor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...