Question about Makita MAC700 2 HP Air Compressor (Hot Dog)

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My Makita MAC700 compressor thermal overload protector trips when the tank pressure reaches 100psi. After reseting it will start up and fill tank to max 130psi. Then work properly for a few cycles before it needs to be reset again.

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Posted on Jan 02, 2017

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  • 65 Answers

SOURCE: compressor kicks on then reset trips after short

How far are you from the power source. The compressor draws a lot of power, if the extension cord is too long or the wires in it are too thin, the compressor will have run issues.
Have you plugged it in close to the main circuit panel and tried it there.

Posted on Feb 01, 2011

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SOURCE: Makita MAC2200 runs fine (with new Manifold Switch

I have worked on many makita compressors and have run-across this problem on a few of them. Your compressor has a check valve that is supposed to hold tank pressure after the switch reaches set pressure. There is an unloader valve built into the pressure switch that releases the pressure in the discharge hose after the unit shuts off. The unloader allows the compressor to restart with-out any pressure in the discharge line. If the brass check valve is leaking pressure back into the system, air will leak out of the unloader valve. Follow the discharge line to the tank and you will see the brass check valve. To test valve for fault, run the compressor till it builds around 80 psi and unplug the unit from the wall outlet. Remove the 1/4" hose connector from the check valve and check for air leaking out of the valve. If it is leaking you can order form www.toolpartsdirect.com. or call the makita 1-800 number. The price is about the same. Good Luck on your repair.

Posted on Mar 19, 2009

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SOURCE: takes a long time to fully charge

Not normal. You possibly have bad rings on your piston, or some wear on the cylinder walls. The best solution is generally to have a competent shop do a rebuild and reseal on the unit... it will cost a little bit, but the guarantee on their work can save you some cash if it starts acting up again.

Posted on Apr 03, 2010

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SOURCE: When I turn on the compressor, it hums, but the

sounds like it has ran low on oil and has siezed,sorry man it's probaly toast.

Posted on Jun 30, 2011

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SOURCE: My MAC 700 laboured to kick in to build pressure, and then finally quit. It won't turn on with the switch in the

All compressors dump a little air when they shut off, it's the air in the pump head and discharge tube. This bleed off should only last two to three seconds. If this pressure isn't bled off the motor won't be able to restart when the pressure drops in the tank becuase there will be too much pressure in the pump head for it to start turning again. If you have a longer bleed off or if the motor is struggling to restart most likely you have a stuck or broke check valve. It's the piece where the discharge tube connects to the tank. It's designed to let air into the tank but not back out so the pressure valve can bleed off the air in the pump. On rare occasions you can remove it and clean it out but usually they have to be replaced. You would need Makita Part Number 409004-E.

Posted on Feb 29, 2012

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1 Answer

Pressure drops significantly before compressor starts


Some pressure switches can be adjusted with an allen wrench. You can't get more pressure from the regulator knob of the pressure isn't in the tank. look at the pressure switch with the cover off. If you see a screw with a spring around it. turn it clock wise 1/4 turn at a time until 125 is reached. The motor will labor more, so 2 hp may not be enough.

May 15, 2013 | Makita MAC700 2.0 HP Air Compressor

1 Answer

Makita MAC700 pressure switch won't power on?


Pressure switches do not have reset buttons built in. The reset button is usually attached to the frame or cover and marked with amp rating. The pressure switch only responds to pressure in the tank. There is however a switch incorporated in the cover or on one side of the switch. Usually a red button that you pull, red or black switch/knob/lever to turn on top or side. If on/off switch broke off in the off postion, the compressor will act as yours does. Try to find a picture of your switch on ebay using the brand name or shape /look and determine where the switch should be positioned. If the switch is broken or fallen off /lost, replace the pressure switch with generic. Usually about $18. Pay attention to port size, number of ports and pressure cut-out. Good luck

Jun 10, 2012 | Makita MAC700 2.0 HP Air Compressor

1 Answer

My MAC 700 laboured to kick in to build pressure, and then finally quit. It won't turn on with the switch in the


All compressors dump a little air when they shut off, it's the air in the pump head and discharge tube. This bleed off should only last two to three seconds. If this pressure isn't bled off the motor won't be able to restart when the pressure drops in the tank becuase there will be too much pressure in the pump head for it to start turning again. If you have a longer bleed off or if the motor is struggling to restart most likely you have a stuck or broke check valve. It's the piece where the discharge tube connects to the tank. It's designed to let air into the tank but not back out so the pressure valve can bleed off the air in the pump. On rare occasions you can remove it and clean it out but usually they have to be replaced. You would need Makita Part Number 409004-E.

Feb 29, 2012 | Makita MAC700 2 HP Air Compressor "The Hot...

1 Answer

I am trying to find the thermal overlaod switch with no luck . Where is it exactly?


The motor has a manual reset thermal overload protector switch. If the motor overheats for any reason, the overload protector will shut off the motor. The motor must be allowed to cool down before resetting the overload switch and restarting. It is located on the motor housing on the side opposite where the pump and hose connections are. The reason this switch shuts off is because of low voltage problems caused by either a too low amp rating on the circuit it's plugged into or by using an extension cord. It is always safer and better for the motor to run longer air hoses than to use extension cords.

Jan 09, 2011 | Makita MAC700 2 HP Air Compressor (Hot...

1 Answer

My makita makair mac500 was running fine. then it just quit. i have emptied the tank to 0. It will not start. is it dead for good? thanks


The motor has a manual reset thermal overload protector switch. If the motor overheats for any reason, the overload protector will shut off the motor. The motor must be allowed to cool down before resetting the overload switch and restarting. It is located on the motor housing on the side opposite where the pump and hose connections are. The reason this switch shuts off is because of low voltage problems caused by either a too low amp rating on the circuit it's plugged into or by using an extension cord. It is always safer and better for the motor to run longer air hoses than to use extension cords.

Nov 18, 2010 | Makita MAC700 2 HP Air Compressor (Hot...

2 Answers

Will sometimes trip breaker when starting


Your compressor may not be unloading completely. Check for leak at intank check valve. Follow the airline from pump to tank. Remove the airline from he brass valve, with air in the tank spray soapy water to check for leak, replace as needed. If no leak the examing the pressure switch where 1/4 tubing connects. There you will find a small lever that opens a stem to unload air from airline. You can test the function by running the pump then switching off at the pressure switch, listen for release of air. If works ok then not enough power is reaching the compressor. Use very little or no cord and do not overload plug with other tools.

Nov 02, 2010 | Makita Mac5200 138a 3 Hp 5 Gal Wheeled Air...

2 Answers

Trips thermal overload. power source ok. oil ok


Several things to check. Amp draw to be within number on plate, if amp draw not correct check capacitor, should be within 5% of rating on cap.. If amp draw about right and cap reads good suspect faulty breaker. If amp draw high and cap. good check for leak at in-tank check valve. With pressure in tank remove hose at check valve spray soapy water. If check valve good, suspect reed valves leaking. If reeds are leaking the compressor will take longer than normal to fill and the discharge tube/air will get very hot. It is recommended to note the amount of time it takes to fill tank when unit is new and compare this as unit wears. Length of time to fill is an indication of how well unit is working. A combination of leaky valves and leaking fittings as well as leaking checkvalve will cause motor to overheat.

Oct 03, 2010 | Hitachi EC89 4 Gallon Twin Stack Air...

2 Answers

Champion VR7F will not restart without hitting reset switch.


Solved this problem. It required a new motor starter (or at least one component from the starter. The main power lead running to the thermal overload relay had oxidized and was conducting current poorly. Each time it would run ( I did this with the motor starter cover off) the lead going to the bottom side of the thermal overload would spark then glow red during the tank fill. I removed the bad section of wire, and installed a new thermal overload in the starter.

Sep 15, 2009 | Air Tools & Compressors

1 Answer

Motor will not start


I had the same problem and the solution was to manually press the thermal overload button. The button is located under the tool box next the motor head. I do not believe I tripped the thermal overload during use, but I suppose anything is possible. I’ve been using the compressor in sub 40 deg F. temperatures. I found the following in the Owner’s Manual, but had to look at the part manual to locate the switch.
MOTOR THERMAL OVERLOAD
PROTECTOR: The electric motor
has a manual thermal overload
protector. If the motor overheats
for any reason, the thermal
overload protector will shut off
the motor. Turn pressure switch
to the “off” position and wait for
unit to cool before pushing the
reset button and restarting the
compressor.

Good Luck!

Dec 14, 2008 | Makita MAC5200 Electric Powered Air...

1 Answer

Electrical unit attached to compressor keeps making a spark(clicking sound) Fridge & freezer slowly stopped cooling during the day and is now down to 0 cool.


Overload thermal protector is tripping out. When a mechanical refrigerator is unplugged it should remain unplugged for 5-10 minutes to allow the refrigerant pressure to equalize. If you unplug it and then plug it right back in the overload will open on and off until the pressure in the system balance to the point where the compressor will start.

This protector is a two way protector. It opens on Over current and or over temperature. If a condenser is plugged with dust , hair or what ever the fan which circulates the air for cooling the system will not move enough air to keep the compressor with-in operating temperature range. The thermal protector will open.

May 03, 2008 | Refrigerators

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