Question about Clarke Air Tools & Compressors

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Clarke compressor ,motor runs ,but very little pressure.

Model is ped12a50.

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Posted on Jan 02, 2017

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SOURCE: Air compressor motor stalls under pressure

this sounds like a bad pressure switch.if the unit is not shutting off at the same pressure each time this would be the cause.2 if the pressure is not unloading the air pressure on the compressor side of the unit it will cause the unit to struggle when it starts a cycle because the piston is under a load .how this works is say the unit starts from 0 psi when it get to the desired pressure you have it set on the unit kicks off . the other adjustment most units have on them is what pressure to cycle back when the unit reaches say 100 pounds ,it kicks off and bleeds the air off the compressor side so when it starts back up it wont start up with pressure on the piston.

Posted on Jun 22, 2009

  • 98 Answers

SOURCE: where would I find a manual for a clark air

Needs new valves

Posted on Jul 21, 2009

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SOURCE: My craftsman air compressor model 919 16737 1.1 hp

Probably the check valve has failed. It apparently is where the pipe goes into the tank from the compressor.

Posted on Aug 24, 2009

ollie reece
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SOURCE: Compressor tank will not fill with air

piston rings gone valves stuck inside nonreturn valve jammed the pipe coming from the pump unit into the tank before it goes into the tank it goes to a gold valve you need to take this out and check the rubber and spring if the seem ok turn it around and put back in then get back to me buddy

Posted on Sep 16, 2009

  • 1 Answer

SOURCE: I have a Clarke SHHH air 2/9 compressor

I also have a Clarke SHHH 2/9 with the same problem. I sent it off to machine mart service dept. in Nottingham who quoted £189 to replace a faulty pump. Am not going ahead with repair since replacement cost is only £250. Cost sending to Nottingham (from local machine mart) & cost of estimate & cost of return (to local machine mart) was £24 which I thought was reasonable. Very unimpressed with compressor itself wich failed after only light use.

Posted on Aug 06, 2010

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You didn't state your model number but the only place I could find that has manuals for Clark air compressors is Clark Power Porducts UK at: Usually if you have an air leak at the pressure switch when the tank is full and after the motor shuts off it is indicative of a stuck or broken tank check valve. Sometimes they can be cleaned and will work for a while but more often than not they have to be replaced.

Sep 06, 2012 | Clarke Air Tools & Compressors

1 Answer

Looking for parts for a Clarke air compressor,model AC2002

try going through machine mart in uk they are main agents for clarke machines

Jul 05, 2012 | Clarke Air Tools & Compressors

1 Answer

Looking for parts for a Clarke air compressor

try machine mart in uk they are main agents for clarke machines over here

Jul 06, 2012 | Clarke Air Tools & Compressors

1 Answer

My air comp. ac2001b will run fine shut off then wont start up under pressure but will if you drain air out of it

There is a differential between the shut-off and start pressures of about 20 psi and these pressures are adjustable on some switches. What the switch must do as well is relieve the pressure on the compressor head so that the motor does not try start against a load. You shoud hear the pressure relieving when the compressor shuts off, if not you need to rectify this problem, otherwise check the pressure that the motor cuts in at and set it or replace the switch.

Apr 27, 2011 | Clarke Air Tools & Compressors

2 Answers

I have a Clarke SHHH air 2/9 compressor


Can you hear any leakage, if not then I would suspect a valve is jammed open.

Gently tap valve housing with a soft hammer, may dislodge the valve.

Aug 11, 2009 | Clarke Air Tools & Compressors

1 Answer

Motor startup trouble while pressure in tank

My first thought was that the check valve is allowing pressure back into the compressor and preventing the motor from turning. That's still my best guess right now.

I think the cold weather start symptom is what you would see with any engine/motor -- it requires more torque to get it going. In this scenario, if the check valve weren't leaking, it would start okay when cold.

May 06, 2009 | Clarke Power Products Inc AC2001 2HP 4...

1 Answer

Clarke air compressor ac2500 - not working - no compression

Your pressue builds up and stays trapped in head which causes the motor to lock up. Your pressure switch is probably bad.

Dec 27, 2008 | Clarke Air Tools & Compressors

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