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Old 07-02-2018, 08:51 PM   #1
_Ogre
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remote air compressor timer

i'm real bad about turning off the compressor, my compressor has spent the better part of 15 years on, even thou i have a note taped on the door: lights, heat, compressor. my compressor room is under the stairs, sort of out of sight, out of mind, when i am leaving thew shop

i have an x-10 remote off for the lights and stereo, i have a programmable thermostat to turn the heat down to 45*f every 4 hours and now i have a timer control on the compressor

i bought a 12 hr timer for $4 and a 30 amp definite purpose contactor for $14, both from ebay, both new. i threw the contactor into a 3 gang plastic box (still needs a cover) and have the timer on the other side of the wall. definite purpose contactors are cheap throw away magnetic starters designed for hvac applications. you can buy new contactor from home depot for $10 (found out after i bought mine), just make sure you get 120volt coil

my hose reel leaks as do all quick connects by nature of the beast, so i added a 1/2'' solenoid valve to the timer circuit and have zero leak down. as soon as the timer is turned i have air, timer off no air. adding the $25 solenoid valve doubled my cost of the install, but 2 days of no use and the pressure is still at 150 psi


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Old 07-02-2018, 09:53 PM   #2
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Re: remote air compressor timer

Sweet setup....my dad has a timer on his water heater....2hrs in morn...2hrs at night....he claims he sees a small diff on his power bill
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Old 07-03-2018, 12:30 AM   #3
Steven R
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Re: remote air compressor timer

I like the Idea of the solenoid to turn off the air at the tank. nice thanks for sharing.
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Old 08-11-2018, 05:09 PM   #4
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Re: remote air compressor timer

for the record... just got back from a 3 week 6300 mile cruise
compressor still has 120 psi in it

solenoid valve seems to be working
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Old 04-02-2020, 01:41 PM   #5
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Re: remote air compressor timer

bump

just returned from a 3 month 11000 mile trip all over
compressor still has 50 psi in the tank
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Old 04-02-2020, 07:44 PM   #6
PGSigns
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Re: remote air compressor timer

Looks like it is doing good for you.
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Old 04-03-2020, 10:16 AM   #7
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Re: remote air compressor timer

I did this on a project about 6 years ago with a old contacter I striped from a A/C condenser and still works perfectly 24/7, The one thing you did not mention is the cost for even a cheep 220 volt timer is at least 10 x the cost , I commend you for thinking outside the box .
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Old 04-03-2020, 07:37 PM   #8
franken
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Re: remote air compressor timer

I have a 120V switch that disconnects the pressure switch (that controls the contactor) that would be easy to replace with a timer switch that I even have lying around. I just hate the ticking sound.
Either is a good idea since the motor can run forever in the event of a big air leak.
I'm also still using a ball valve at the tank outlet so I'm in the dark ages...
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Old 04-03-2020, 09:23 PM   #9
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Re: remote air compressor timer

Quote:
Originally Posted by mongocanfly View Post
Sweet setup....my dad has a timer on his water heater....2hrs in morn...2hrs at night....he claims he sees a small diff on his power bill
When I was in SC the power company gave you a discount for having a water heater cut off wired into the phone line. They would remotely turn it off during peak load. We moved in and found out about it the next day as I got a phone call at work about the lack of hot water. That night a few wire nuts got rearranged and no more problems for the next 3 years that we lived there.
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