Central Pneumatic 2HP will not build air
by Bruce Bennett
I have a Central Pneumatic 2HP, 115 PSI 8 Gallon tank. When I turn it on, it won't build up any air. Is there any thing I can do other than replace the switch ?
Well Bruce, changing your pressure switch will not typically resolve the compressor problem you are experiencing.
The pressure switch turns the compressor on and off based on the tank pressure.
The compressor pump is what actually pulls air in and drives it down into the the tank to build pressure. And, from the sounds of it, your pump has problems.
Please see the troubleshooting section on the sitemap page for pages that explain why air compressors seem to run fine, but don't build any pressure.
#90221 2hp.-4gallon how to wire back together
by Josh mckee
Wiring back together,I broke the top of my compressor and disconnected all the wires.now I'm not sure how to wire back together,anyone familiar with this?please help.black,green,and white are coming from the power cord,and the same coming from the motor.thank you
Both sets of wires go to the pressure switch.
If this were my compressor I would expect that the power supply wires go to the tabs / bolts / plugs on the switch that say line, and the motor wires attach to the motor / load tabs, bolts or plugs.
Typically the black and white wires are the hot wires, green goes to the ground tab on the switch.
If you are not comfortable doing this, I suggest you take your compressor to a shop.
I am not an electrician and cannot give electrical advice.
Model 94355 air leak on cyl head?
Harbor Freight # 94355 8 gal oiless compressor
Air leak on cyl head. Not from gasket. Looks like small hole in center of the top of the head
Ron, you must have removed the plastic shroud to get to the head?
I am looking at the manual and I don't see where you might have a leak.
Air is not bleeding out of the pressure switch at the rear, is it?
I'm wondering if the hole you refer to is the intake port? If air is huffing out that hole as the compressor is running, then you have a failing or failed intake valve.
Could you start a new thread and upload a photo showing where this hole is?
Click here to post comments
Add your own question or comment. It's easy to do. How? Simply click here to return to Central Pneumatic Air Compressor Issues.
campbell hausfeld fp209501 low pressure
campbell hausfeld fp209501 only pumps to 40psi and won't go any higher twin tank
I'm going to assume that the compressor gets to 40 PSI and continues to run, but the pressure doesn't go higher...yes?
Or, is it that the pressure gets to 40 PSI and the compressor shuts off?
Assuming it is the former, please visit the troubleshooting section and find the link to the page about just this compressor problem.
When you have done the checks, if you wish, add a comment here with more details or about a specific problem you found.