Question about Air Tools & Compressors
WONT START JUST HUMES A MIN AND THEN KICKS THE BREAKER DO YOU THINK IT IS THE 2 CAPS
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Posted on Jan 02, 2017
Air compressors tend to draw more power as they age, however, will not trip breaker unless some malfunction. Here are some simple tests. Unplug compressor and turn the pump by hand, you may have to remove a cover to do this. It should turn freely; any resistance could be failing bearing (would make noise) unloader/check valve leaking allowing back pressure to pump, or failed start capacitor/start winding. Easy test for checkvalve. With pressure in tank loosen discharge hose at tank and check for air leak. Check valve should hold pressure in tank. Replace as needed. Failed capacitor/s will cause high amp draw. Remove from circuit and test. UF reading should be within 95% of printed rating. Finally, most air compressor motors have two windings, start and run. Power to windings is controlled by flyball switch inside rear of motor. This switch has contacts that can stick in start position and cause high amp draw. Examine windings for signs of overheating. Copper windings generally have color of new penny. Very dark brown windings bad news. Gook luck
Posted on Jan 06, 2009
I have a 2hp craftsman air compessor with a two cylinder pump, Here is the info from my manual as far as oil capacitity:
Remove oil fill plug and slowly add
a compressor oil until it is even with the
top of the oil fill hole. NOTE: Do not
allow oil to be lower than 3/8"
from the top at any time. When filling
the crankcase, the oil flows very slowly
into the pump. If the oil is added too
quickly, it will overflow and appear to
be full. NOTE: Crankcase oil capacity is
approximately 16 fluid ounces.
I buy my compessor oil from Lowes in the tool department. It comes in 16oz and sells for about $3. I wouldnt worry about how many ounces it holds but rather that the oil level is to top of filler hole. Lowes also sells a synthetic oil for about $7 and is recommended for severe conditions (hot / cold / used all day). Good Luck!
Posted on Apr 26, 2009
The pressure switch controls the cut-in and cut-out points for the motor. Some switches have a differential adjustment besides the pressure adjustment. The differential controls the spread between cut-in & cut-out, (say in at 80 PSI, out at100 PSI)
Try looking for these if you didn't get a manual.
Posted on Apr 27, 2009
Most garage curcuits are 15 amp GFI plugs and they won't run most compressors. Drain all of the air out of the tank and see if it runs. If so then you are going to have to add a 20 amp plug for your pump.
Posted on Jan 17, 2010
is this new, has it ever run? perhaps the breaker isn't large enough for the units required amperage, maybe the breaker is just bad. Have you tried different recepts? Check the nameplate for the amp requirements and make sure the breaker is big enough
Posted on Mar 19, 2010
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