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

1 Answer

Overheating? burnt oil smell

After the compressor cycles several times, a burnt oil smell is present. I have changed the oil several times but nothing helps. I use 30 weight synthetic oil matching the specs in the manual. The compressor has ceased to run since then. I have bought another ec12 to replace it.

Posted by on

  • theodore stall Nov 29, 2008

    Boat anchor and now i bought a second one. Forget working, im going fishing with two anchors. Hitachi sucks.

  • theodore stall Nov 29, 2008

    Thank you PC_Tech50. Buyer be ware. And I hate my Bostitch 2hp contractor that will pop any circut braker but, it always runs if you can juice it.

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Hitachi Master
  • 1,383 Answers

There is a seal between the compressor and the motor that in failed condition will leak oil into motor windings causing burnt oil smell. Some hitachi compressors suffered from failed valves or head gasket causing extra heat but not oil smell. These compressors also have a thermobreaker built into the windings that when failed will prevent motor from starting or would start and run for only a few moments then open. This part is not replaceable. enjoy

Posted on Nov 29, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Motorcycle in Trouble. engine oil gets black too early after 400 miles.


overhaul your engine
it seems that piston rings are worn out.and it passes the burnt gases to the crankcase thats why ur oil get black

Sep 12, 2015 | 2006 Honda VTX 1800 Sport Cruiser

1 Answer

Misfire due to oil leaking into spark plug. burnt oil smell


have a compression test done on the cylinders...sounds like the rings are bad allowing oil to blow into the cylinder...you may be able to fix it by adding a can of seafoam to your oil and see if that fixes it within a couple of weeks. You can buy that at any auto parts store or walmart or kmart.

Mar 17, 2014 | Ford Escape Cars & Trucks

1 Answer

The compressor suddenly trip off and it runs and after few minutes it trip off again


Compressor tipping is typically due to overheating. A single bimetal disc thermostat (e.g. Klixon brand device) in located within the motor windings within hermetically sealed compressors which will cut off motor current after the local windings have sufficiently overheated.

Unfortunately, by the time this limiter has activated, the compressor motor and pump has typically already suffered mild to major damage.

Compressor overheating is typically a result of low freon. The freon, besides cooling the compressor, also carries the lubricant, so low freon results in a hot compressor with poor lubrication, with some degree of permanent damage by the time the internal limiter has activated.

There are a few other possibilities, depending on system design, but some version of the above scenario is typical.

When the compressor runs hot, this also initiates chemical changes in the freon and oil resulting in acids with further attack both the compressor pump, motor windings and motor bearings, a viscous circle.

Compressor overheating can also be a result of contaminants circulating within the freon or evolving mechanical failure problems within the compressor pump or motor.

Better systems (very few high end residential central AC systems) include OEM or field installed high freon pressure and low freon pressure cut out switches connected to circuits which stop the compressor and keep it off when pressure are well beyond desired.
These are far more effective in protecting the compressor and preventing permanent damage.

Additional protection options are a compressor discharge temperature limit switch (shuts off the compressor if the outlet freon goes well above desirable outlet temps), and a flow switch which sense adequate condenser fan air flow and only allows the compressor to run when adequate air flow is present (a second or so after the condenser fan has started). (Since condenser air flow is what removes all the system and interior heat, the compressor should not run unless airflow is appropriate.)

While all the above 4 safety device strategies are relatively inexpensive, they are not present in the vast majority of residential AC systems sold in the US.

Jan 06, 2010 | Carrier Heating & Cooling

2 Answers

I just moved my dads fridge to my house and after about 7 hours I smelled a burnt plastic smell. I smell it on and off.The fridge is still cooling.When i moved it I layed it down.


When a fridge is layed down the oil in the compressor will flow into the refridgerant lines and will have to be stood upright until the oil can return the the comrpessor. It may be too late for yours but I would try cutting it off for a day before trying it again. This may not be the cause of the smell so keep a nose on that and try to locate exactly where it's coming from.

Aug 21, 2009 | Whirlpool GC5SHEXN Side by Side...

1 Answer

Burnt Rubber smell and spin cycle didn't work


the main motor needs to be serviced , sounds like the couplings broke , hope this helps , AJ

May 18, 2009 | Maytag Dependable Care LAT9416

2 Answers

A smell of burning rubber is coming from my engine. What is it? Could it be the timing belt? Is it safe to drive any distance? Thanks I have a burning rubber smell in my Subaru 2003 Outback, - any...


Check serpentine belt, the radidator hose , the air conditioner compressor and also the differential seal they common cause for rubber smell.

Check for any rubber part that can be in contact with exhaust system and inspect wirings looking for shorts.

Also ensure that the smell is not coming from a bad tyre, and check for oil leaks in your engine, burnt oil can be confused with rubbere smell.

Mar 05, 2009 | 2003 Subaru Outback

1 Answer

Smell Coming From Intertherm Furnace


It could be several things.

The most alarming being a cracked heat exchanger allowing the exhaust fumes to enter the living space.

Exhaust fumes that contain carbon monoxide.

I HIGHLY RECCOMEND that you purchase carbon monoxide detectors, and/or check the batteries in any you might already have.

Carbon monoxide can be deadly at high concentrations.

It could be burning wires, but would smell like burnt rubber.

It could be mold/mildew but would smell musty like dirty socks.

It could be a build up of dust oil etc on the heat exchanger, but that is usually only smelled when it is started up for the first time in months.

Make sure the filters are clean. Dirty filters can cause overheating of the heat exchanger and sometimes cause smells.

This is one of those times I will recommend you have a professional look at your unit.
Specifically the heat exchanger to look for cracks.

A pro will know where to look, where the usual stress points are etc.

Dec 10, 2008 | Kitchen Appliances - Others

1 Answer

Refrigerator Smell


Is the problem more in the freezer than the fridge section. If it is it is possible that on a defrost cycle the heaters which warm the coil may have warped and ar heating something they shouldnt. Another possibility is if there is something in the condensate tray (where the water collects) or something touching the compressor which runs very hot, or even the compressor relay if it is a 'plastic' smell. Smells are notoriously bad things to trace as engineers normally turn up when the smell is either gone or so faint as to not to detect. All I can suggest is trying to narrow the search area as much as you can and hopefully youll find it. Hope this is of some help.

Sep 13, 2007 | Amana Easy Reach AFD2535DE Bottom Freezer...

Not finding what you are looking for?
Hitachi EC12 Portable Electric 2hp Air Compressor, Oil Lubricated Logo

627 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hitachi Air Tools & Compressors Experts

John Trevino

Level 3 Expert

1383 Answers

Jim Thurston

Level 3 Expert

670 Answers

 Kenneth
Kenneth

Level 2 Expert

50 Answers

Are you a Hitachi Air Tool and Compressor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...