Airbrush Compressor Wiring...need to rewire capacitor. Help!

by Ed Hauk
(Phoenix,Az)


I have a Central Pneumatics 92403 Oilless Compressor for my airbrush setup. It was given to me with a bad capacitor. I have purchased the new capacitor, however, being my own worst enemy and not always the sharpest tool in the shed, I removed the old capacitor 4 or 5 months ago to take with me to the parts store, and never marked the wires. I know, rookie mistake. So now I have all the parts to re-assemble it, but have no recollection of what color wire goes where. I have power cord running in from the wall (not actually plugged in yet) to the ON/OFF switch which has 2 terminals on it. The power cord has 2 black wires and a green, which is obviously the ground wire. One of the incoming black wires from the power cord is attached to one of the terminals on the switch, the other black wire currently hangs loose. The capacitor has 2 wires, one red and one black. Finally, there are 3 wires coming from the compressor motor, `1 red, 1 blue, and 1 yellow. These are undoubtedly the primary winding, secondary winding, and 1 other wire that I am not sure of it's function. I remember that one of the connections had 3 wires twisted together, and the others only had 2. I have searched high and low for several weeks now and haven't been able to find anyone who can tell me which wire is which. Yellow, blue, and red all protrude from the same opening in the motor case so I can't tell which is what. If you can lend any assistance to this project, you would earn my eternal gratitude as well as the "Electrical God" status in my book. Let me thank you in advance for any help you can offer. You can contact me at EHauk3@gmail.com. I appreciate the help.


Sincerely,

Ed Hauk
EHauk3@gmail.com

Comments for Airbrush Compressor Wiring...need to rewire capacitor. Help!

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Jan 02, 2012
Rewire capacitor
by: inranraaj

Hi there,

I might can help you to solve the problem and by reading the description, there is 3 wire from the motor (red,blu and yellow), capacitor 2 wire and power cord 3 wire and also there is a switch.

Ok, lets try this...Red wire from motor goes to capacitor terminal and blue wire from motor also goes to the other terminal of the capacitor.

Secondly,yellow wire from the motor and you need to bridge another wire from the red wire which goes to the capacitor.Now you have 2 wire unconnected (assume red wire and yellow wire)

Thirdly,power cord..3 wire,make as Live and Neutral wire (blue and brown) and another wire is a ground.You need to get a 'ON OFF' switch which in parallel to connect the live and neutral wire separately and it should be live and neutral wire separately.

Finally, this one you need to try by yourselves...Bring the 'live'wire from the switch and connect to the red wire which you bridge from the capacitor and neutral wire connect to the yellow wire from the motor...On the switch and see whether the motor runs or not..Good Luck.


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check capacitors?

by Mat
(Niagara Falls)

How do i check my start and run capacitors? My compressor starts slow and i have to reset the breaker several times before it will startup.
_____________________
You start by going to the site map page, looking under electrical, and following the link that tells you how to check capacitors.

Could be other issues too, Mat. So while you are on the site map page, check the pages relating to compressors that pop breakers.

Bill


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