Question about Air Tools & Compressors

1 Answer

I have a central pneumatic aircompressor with a 21 gallon tank.It pumps up to 120psi then pops off down to 80psi and goes back to 120psi...back and forth... never stoping...could it be a bad pop-off valve?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Sergeant:

    An expert that hasĀ over 500 points.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 250 Answers

I would first find out what pressure the compressor is supposed to shut off at. If it is supposed to shut off at lets say 110 then the pop off valve is doing its job you have to reset the pressure switch so it shuts off less than 120 pounds.

Posted on Mar 16, 2011

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Can I use another Central Pneumatic pump on my 61490 air compressor?


sure harbor freight tools sells new air compressor pumps, just be sure new one matches the R.P.M of the motor or I may damage it if it turns too fast of may not make enough air if it goes to slow , also be aware if belt pulley changes its diameter then pump speed will also change

Dec 05, 2015 | Air Tools & Compressors

1 Answer

21 gal vertical Model 94667 will not fill tank.


Could be piston rings too. Have you looked here? http://www.centralpneumaticaircompressors.com/buying-central-pneumatic-air-compressor-parts/

Oct 14, 2013 | Air Tools & Compressors

1 Answer

I have a 21 gallon 4hp peak motor Central Pneumatic oil lubricated Model 47065 air compressor and it will not go to over 20 psi and it will just keep running


Possible that there is leak on the system or the piston/rings/cylinder has worn out.Also check for oil within the unit. Check the compression of the cycle and if this is too low it means that there is wear and tear and will require a overhauling and reset.

Mar 14, 2012 | Air Tools & Compressors

1 Answer

I have central pneumatic 21 gal. air compressor. The unloader valve is broke. The power switch is a fenwai model: fw-10. Where can I buy a new unloader valve?


If you should mean the switch that is pressure controlled that turn the compressor on and off- that is a fairly universal replacement piece, As is the power switch itself

If you needed that specific part, your best bet is Harbor Freight tools who owns the Central Pneumatic domain.

Feb 14, 2012 | Air Tools & Compressors

1 Answer

I have a Central Pneumatic, 21 Gallon, 3HP air compressor. The compressor is exiting air through exthaust port.


If air leaks when motor is off, fault most likely in-tank check valve. Follow discharge air line from pump to tank. Brass/steel valve at tank is the check valve. Remove hose to valve and check for leak. Replace as needed. If air is leaking while motor is running fault could be reed valves in head. Faulty reed valves in head, or torn head gaskets will cause very hot discharge air and tank will most likely never fill to shut off (or take a very long time to fill)

Sep 06, 2010 | Air Tools & Compressors

1 Answer

How much oil for 2hp 8 gallon central pneumatic air #95386


i'm not sure of the solution but what type of oil did you use?

Apr 10, 2010 | Air Tools & Compressors

1 Answer

Air compressor won't go over 40 psi?


my ace air compressor which is 26 gallon 5 hp will not get over 60psi what is wrong with it please?

Feb 14, 2010 | Craftsman 1 Hp, 4 Gal. Air Compressor

2 Answers

Tank gauge shows empty with 5 gallons in tank. I have a 2005 Sierra Truck, Diesel, Has a 26 gallon tank. When it shows empty I fill it with 21 gallons.


The sending unit in the tank is more than likely faulty. These are bad about going out causing this problem. The cost of this repair generaly cost about 800.00 dollars.

Nov 18, 2009 | 2005 GMC Sierra 2500HD 4WD

1 Answer

Air leakage through pressure switch needle


1)Let your unit pump up.
2)Turn it off.
3)Find the supply line from the pump to the tank.
4)Remove the supply line from the pump head.
5a)If you hear air coming from the tank you have a bad check valve.
5b)If you do not hear air coming from the tank, you have a leaky
pressure switch.

Feb 02, 2009 | Campbell Hausfeld 26 - Gallon Air...

1 Answer

Electric motor stalls


A compressor can stall before completing a cycle if the motor is not receiving correct power, such as when there is an extension cord being used or outlet is overloaded with other appliances. Other problems that cause this condition are in-tank check valve is leaking pressure back to the pump and weak or failed capacitor. Some volt meters have setting for checking caps. Reject the capacitor if reading is 90% of rated value. Rare problems include worn bearing or bad contacts on pressure switch. enjoy

Nov 05, 2008 | Campbell Hausfeld 20 - Gallon Air...

Not finding what you are looking for?
Air Tools & Compressors Logo

Related Topics:

300 people viewed this question

Ask a Question

Usually answered in minutes!

Top Air Tools & Compressors Experts

John Trevino

Level 3 Expert

1383 Answers

Joe Garcia
Joe Garcia

Level 2 Expert

205 Answers

Brad Brown

Level 3 Expert

15557 Answers

Are you an Air Tool and Compressor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...