Hitachi EC12 Portable Electric 2hp Air Compressor, Oil Lubricated
Problem for Hitachi EC12 Portable Electric 2hp Air Compressor, Oil...

Keeps on cycling on and of when not in use?




By neopodo on Oct 27, 2009

" "
compressor runs until it reaches full pressure, motor stops. air releases from place where black tube goes into the swich( not the pressure release valve). pressure drops until it kicks back on, will not hold air. keeps on cycling on and of?
Comments:

Oct 27, 2009

- I believe it is a faulty check valve, i pulled it out and it seems to be faulty. but i cant find a replacement one that looks like it would work.

Solution #1

posted on Oct 27, 2009
Not Rated)

milleraba

Rank: Wiz 
Rating: 82%, 576 votes
I believe you have a faulty pressure switch. The black hose reports to the switch what the pressure is and either starts or stops the compressor through the switch. Air is bleeding out of the hose ...causing short cycling ... for some reason. Fix the leak - fix your problem

Thanks for using FixYa.com

positive comments always welcome

a
Comments:

Oct 27, 2009

- Hmmm ... not sure there is a check valve. I guess it could be ...

The connection I am speaking about has to be open to the pressure vessel so it will know when the pressure goes below the "turn on" setting so the motor will start. The "plumbing" is otherwise solid?

There is a over pressure relief valve that could be leaking (failed to close properly after it was forced open) Or maybe it is set lower than it should be set. Don't adjust it to a higher pressure!

Check the pressure relief and the "dump" valve. The dump valve lets the air out of the cylender that was at or near TDC (has lots of pressure in it ready to go to the tank but didnt get out) when the switch reached max pressure and shut the motor off. Purpose of that dump valve is to make it easy for the motor to restart when it is time (when the pressure goes down).

Let me know what you find out.

Thanks for using Fix.Ya.com

a
Was this helpful?
Yes
No

Popular Solutions for Hitachi EC12 Portable Electric


Questions and Unsolved Problems for Hitachi EC12 Portable Electric


Do you recommend Hitachi EC12 Portable Electric 2hp Air Compressor, Oil Lubricated?
Answer

Answer
the pressure is getting less and less daily , hydrovain 705

Answer
compressor will not start compressing air the unit is getting power but the compressor will not... (More)

Answer
i took it apart and cant remember how to plug every wire connection in correctly need wiring diagram

Answer
looking for a user or owners manual for a puma pku5508g gas air compressor


Didn't find what you were looking for?

Describe your problem:

Select a Category:







Ask our Experts

 

Solve Your Problem Now!
Chat Live with an Expert
Chat Now
Top Air Compressor Experts



Top Garden & Power Tool Repairmen
in , CA
(800) 937-7279
Replacement lawn mower and snow blower parts from...
Commercial Parts Warehouse

(509) 678-4379
Precise Engine Repair proudly represents Briggs...
Precise Engine Repair


       
Solve Your Problem Now!
Chat Live with an Expert
Chat Now

Insert Link
Insert Image
Insert You-Tube clip
Insert List
Insert List
Spell Check

What is this?



Select