Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Equipment & Tools From test equipment to hand tools

Any air compressor whisperers here?
Any air compressor whisperers here?
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 5th October 2018, 10:44 PM   #1
leadbelly is offline leadbelly  Canada
diyAudio Member
leadbelly's Avatar
Join Date: Dec 2002
Location: Calgary, Alberta
Default Any air compressor whisperers here?

My air compressor is driving me crazy. It only works 1 season out of 4. It works like a charm in warm weather. It does not work "near" cold weather. In other words, even if its been in the unheated garage when temperatures should have been above freezing for days, it does not go. It acts as if some instrumentation interlock is preventing it from starting. It's not oil. It's not a big compressor: 8 gallon tank.

Does someone have some experience with this? Is it some temperature sensor with a setpoint above 0 C, like 5 or 10 C? Could it be an oil temp sensor? Is there something inside insulated so that it is quick to freeze and slow to thaw?
Wise men speak because they have something to say; Fools because they have to say something. Plato
  Reply With Quote
Old 5th October 2018, 11:46 PM   #2
richie00boy is offline richie00boy  United Kingdom
Did it Himself
diyAudio Member
richie00boy's Avatar
Join Date: Nov 2003
Location: Gloucestershire, England, UK
Any air compressor whisperers here?
There is no such sensor. When the weather is colder compressors are harder to start. Not sure what your root cause is though.
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, modules and more.
  Reply With Quote
Old 6th October 2018, 01:20 AM   #3
Refugee1 is offline Refugee1  United Kingdom
diyAudio Member
Refugee1's Avatar
Join Date: Jul 2012
Location: Worksop
I would replace the capacitor on the motor and ask questions if that does not work.
  Reply With Quote
Old 6th October 2018, 01:38 AM   #4
Dave Zan is offline Dave Zan  Australia
diyAudio Member
Join Date: Nov 2010
Originally Posted by leadbelly View Post
Does someone have some experience with this? Is it some temperature sensor with a setpoint above 0 C, like 5 or 10 C?...
I have some experience and have never seen any such setup.
The connections are quite simple - power in, a pressure switch, a motor.
The better units have an unloader connected to the pressure switch .
This vents the output line to make it easier for the motor when it cuts back in.
But that's about it for a typical small unit.
If you have a multimeter and the experience to use it safely then it should be easy to follow the power.
This is mains, potentially lethal, so the usual disclaimers, don't do it unless you are qualified.

Best wishes
  Reply With Quote
Old 6th October 2018, 02:07 AM   #5
chromenuts is online now chromenuts  United States
diyAudio Member
Join Date: Dec 2008
Maybe this is a dumb question...Is the unit you are talking about gas powered and the motor won’t start?...or does it run on an electric motor? If it is gas operated it may have something to do with how the carb was tuned at the factory. You will have similar problems with most gas equipment that is tuned to run efficiently in warmer weather.
  Reply With Quote
Old 6th October 2018, 02:34 AM   #6
Chamberman is offline Chamberman  United States
diyAudio Member
Join Date: Jun 2001
Location: USA, Grand Prairie, Tx
Based on your limited description if it is not doing anything, as in no hum or noise at all when plugged into the wall. I would suspect that the pressure switch is for some reason adversely affected by colder weather.

I would pull the cover off the pressure switch and check to see if the contacts in there are closed. It should go without saying, but make sure the lever switch is in the "ON" position while doing this. If you're comfortable checking it with a DMM with the power applied that's how I would do it.

If its the pressure switch you can get one of these dirt cheap. I've replaced a couple of them in the past on some old compressors I've refurbed for people.

You might want to add a picture or two, they are worth at least a thousand words.
  Reply With Quote
Old 7th October 2018, 05:07 PM   #7
Audio1Man is offline Audio1Man  United States
Duke Aguiar Design Services
diyAudio Member
Join Date: Feb 2010
Location: Thousand Oaks, CA.
Any air compressor whisperers here?
My Sonís Air compressor would not start sometimes. It would hum loudly upon power on. It was an electronic motor driving a belt to the compressor. The motor had a starting capacitor. The FLYOUT weight that is part of the starter circuit was stuck and with a little oil on the shaft it became loose and all is well.
  Reply With Quote


Any air compressor whisperers here?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Compressor design Kay Pirinha Instruments and Amps 7 2nd July 2015 04:38 PM
Compressor unit help? ainslie Everything Else 2 10th April 2012 08:28 PM
compressor diy bigredlevy Analog Line Level 8 28th November 2010 07:30 PM
Compressor diy XXLPeanut Instruments and Amps 5 14th June 2006 11:55 PM
compressor schematic JBL Solid State 18 22nd October 2002 12:00 AM

New To Site? Need Help?

All times are GMT. The time now is 04:32 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio