Question about Hitachi EC12 Portable Electric 2hp Air Compressor, Oil Lubricated

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Voltage problem What voltage do I have to Run On?

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Most direct-drive electric compressors can run on a standard 110-volt circuit. When you get into the electric wheelbarrow compressors, you may have a choice for a dual-voltage option, which allows you to switch between 110-volt and 220-volt, depending on power supply that is available for the job. However, for jobs that require substantially more air, usually a 220-volt motor will be your only choice if a gas-powered compressor is not allowed as an option. When looking for a stationary shop compressor, you need to know what power supply you have at your disposal (208v, 230v, or 460v), and whether it is a single-phase or three-phase power. These units are usually hard-wired into the power supply and require a magnetic starter for thermal overload protection

Posted on Aug 27, 2008

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Run capacitor had a burnt off terminal. replaced with same capacitor and the same thing happened. wondering what to test to keep this from happening. it is running off a dedicated 230 volt outlet


All electrical comnections must be clean and tight.
It seems that the capacitor terminal was loose amd/or dirty. With a loose or dirty connection there is resistance and resistance consumes power, power dissipated as heat.
Replace the capacitor wire leads connectors with vlean tight ones.
To check for other possible problems, if possible, read the capacitor voltage while the motor is running, should not exceed the cap rated voltage

Sep 02, 2015 | Air Tools & Compressors

1 Answer

Motor doesnt start


1st check for proper voltage across the terminals , no reading means no power exists or bad switch, if not ohm the motors windings and compare the run and starts readings combined equal the reading from run to start terminals, if so the run capacitors likely bad, or start cap too if equipped.

Mar 03, 2012 | Campbell Hausfeld Air Tools & Compressors

1 Answer

Can my 240 volt compressor run on 208 volts?


Being an Authorized Service Center for a couple air compressor companies I can tell you I have replaced several 240 volt motors because they were run on 208 volts. Not knowing what model you have or what motor is on it, yes your compressor will run on 208 volts but it is very ******* the motor. At startup, all voltages have a dropoff then come back up to their rated voltage. The dropoff is determined by the original voltage and length and guage of lines getting the power from your transformer to the compressor With 208 volts it typically drops to around 190 volts at startup then comes back up to 205 to 208 volts while running. The motor needs the full 240 volts when it restarts and there is already pressure in the tank If the motor's not marked, call the manufacturer and see if it's rated for up to 240 volts or only for 240 volts.

Feb 08, 2012 | Craftsman Air Tools & Compressors

1 Answer

I need a huizhong cbb60 120uf capcitor for clark air compressor


You can use any brand motor run capacitor for this application (metal can). Mfd rating should be within plus or minus 5 percent of what you need (about 110 to 125uf). You can also use two 60 mfd motor run capacitors. Voltage rating should the same or higher ( higher voltage rating, better quality). Capacitors fail when there are too many start cycles per hour and or low power to comperssor. Generators also tend to shorten the life of caps due to low power at start and variance of cycles. Good luck with your repair.

Sep 21, 2011 | Clarke Power Products Inc AC2001 2HP 4...

1 Answer

A few years ago i tried using an extension cord that was too long and wouldnt allow enugh power to run the compressor it only made a noise like it was trying to run ,so i quickly disconnected the extension...


Usually the first part to fail on conpressor is the capacitor. Remove the cover to the compressor and pull the capacitor (check that motor turns freely to make sure not bearing locked). Have the capacitor tested with meter that gives digital reading. The cap needs to test within 95 percent of stated capacity. Try to purchase a generic cap instead of factory part to save money (found on ebay or refrigeration /motor parts company). Purchase same mfd as printed on old cap and same or higher voltage(higher voltage rated cap will be better quality but larger). Good luck

Sep 11, 2011 | Stanley Air Tools & Compressors

1 Answer

How to change Emglo air compressor from 220v to 110v. Compressor is running at half speed when plugged into standard wall outlet. I bought the compressor new in the early "90's" and since then...


Hi Pete,
On the side of the motor on the label should be a wiring diagram. The diagram will tell you how to wire fro high 220v and low 110v ...
If the nameplate is single voltage only then the motor cannot be rewired for the lower voltage...
Also check the motor RPM nameplate as compared to the others...you may have a 1725 motor and the newer ones a 3450 motor...that would give them double the RPM's if the gearing or pulley sizes are the same...so.. if you have the right voltage and the RPM's of the motor are the lower, then you possibly could change the pulley sizes to speed up the compressor...

Lots to check and think about...

heatman101

Mar 11, 2011 | Dewalt Air Tools & Compressors

1 Answer

Sorry bought magnum compressor 3phase but also runs 240v cannot get it to run on 240v any info would be realy helpfull ta Peter


if you have a 3phase motor it will only run using 3 phase power no matter what voltage or you can get a phase converter but they are pricey and varies with what horsepower your motor is

Oct 19, 2010 | Magnum Air Tools & Compressors

1 Answer

I am changing from 460 V to 230 V on a Ingersol Rand Compressor motor # 32036006 and I cant get it to start it turns real slow is this supposed to have some sort of a motor starter capicitor set up ?


Recheck the way you have the motor leads hooked up, make sure they are correct. You did re connect the motor leads didnt you? You are not trying to run it on 230v single phase are you? Assuming it is a dual voltage motor, the leads will have to be re connected from hi voltage to lo voltage. Also when you cut the operating voltage in half the operating current(amps ) will double, all this info should be on the motor name plate. This motor does not use a capicitor to start it

Mar 15, 2010 | Ingersoll Rand - Rand Type - 30...

1 Answer

Converting from 220 to 110 volts


Most brands of air comperssors are built to work on either 220 or 110 v. I believe that 220 v compressors are more efficient and draw less current and run cooler.
The more expensive compressors have a switch allowing for voltage selection. Still others will have a wiring diagram printed on the motor allowing voltage change by changing jumpers. Most all of the sears compressors that I have repaired were of single voltage with no other way to change except change motor. Do not worry however, you have the better motor. It is easier to convert the outlet plug to 220 by isolating the circuit and installing a 220 v breaker. enjoy

Nov 15, 2008 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

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