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timer switch for air cleaner

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Forum topic by BCNabe posted 07-21-2014 06:03 PM 475 views 0 times favorited 14 replies Add to Favorites Watch
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BCNabe

7 posts in 750 days


07-21-2014 06:03 PM

I just installed an air cleaner in my shop this weekend. What I want to do is have it on while I’m in the shop and then have it run for maybe 30 minutes after I leave the shop, but I don’t want to have to remember to come back to the shop and turn it off.

So I thought I would just get a timer switch but in looking at the timer switches at the local big box store I found a switch that has settings to turn them on and off – used more for security lighting. Not really what I want.

The other type I saw had a 5, 10, 20, 30 and 60 minute timer but it doesn’t have a manual override. In other words if I’m in the shop for 5-6 hours I would have to remember to turn it back on every 60 minutes.

That’s not the end of the world but I’m wondering if anyone has seen a switch that has a timer but also a manual timer override?

TIA


14 replies so far

View bigblockyeti's profile

bigblockyeti

1601 posts in 386 days


#1 posted 07-21-2014 06:09 PM

I’ve seen such a switch, connected to a bathroom infared heating lamb. You could turn it counter clockwise to have it stay on, or clockwise to set on for 0 – 60 minutes.

View rick1955's profile

rick1955

48 posts in 96 days


#2 posted 07-21-2014 09:16 PM

McMaster.com has them. Spring wound timers with or without override. Reasonably priced.

View Grandpa's profile

Grandpa

3156 posts in 1341 days


#3 posted 07-21-2014 11:47 PM

Use a manual switch to go around the timer. When you leave the shop turn the switch off and set the timer. Should work well for you. I have seen the timer that Bigblock mentioned. rick has a good lead also. Now it is your decision.

View toolie's profile

toolie

1764 posts in 1294 days


#4 posted 07-22-2014 01:56 AM

http://lumberjocks.com/topics/62198

the timer in the above thread works up to 4 hours or like a regular on/off switch. best $6 i ever spent (well, $18, actually. i got the last 3 units my local store had. going to put one on the whole house fan and the other on tech second air filter fan in the shop.).

-- there's a solution to every problem.......you just have to be willing to find it.

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bigblockyeti

1601 posts in 386 days


#5 posted 07-22-2014 02:28 AM

This is as close as I could find to what I remember seeing. I suspect finding ones that will stay on are harder to find due to the fact who ever is installing them really doesn’t want the user to have the option of leaving the connected device turned on.

http://www.amazon.com/Intermatic-FD60MWC-60-Minute-Spring-Loaded/dp/B00002NAPD/ref=sr_1_10?ie=UTF8&qid=1405995648&sr=8-10&keywords=timer+switch

View TopamaxSurvivor's profile

TopamaxSurvivor

14793 posts in 2341 days


#6 posted 07-22-2014 03:29 AM

Those spring type timer switches are made in 12 and 24 hour models. I have found them to be quite accurate except when set at the full extent of the scale. If you don’t want to add another switch as Grandpa suggested, you should b e able to get a 12 or 24 hour model at an electrical wholesaler.

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

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rick1955

48 posts in 96 days


#7 posted 07-22-2014 05:54 AM

http://www.mcmaster.com/#standard-timer-switches/=sxybtm
Intermatic spring wound timers with and without over ride…
McMaster page 935

View BCNabe's profile

BCNabe

7 posts in 750 days


#8 posted 07-22-2014 01:33 PM

Thanks all!

Just ordered a GE switch (push button) from Amazon.

View Notw's profile

Notw

80 posts in 419 days


#9 posted 07-22-2014 02:50 PM

What is your opinion of having an air cleaner so far? I have a layer of fine dust pretty much everywhere, do you find the air cleaner helps with this?

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BCNabe

7 posts in 750 days


#10 posted 07-22-2014 03:07 PM

I had the air cleaner in a basement shop with low ceilings and it worked well.

I just moved it a few days ago into a pole barn (28’x40’) with 12’ ceilings. I haven’t done much since then to know how well it will work. I have it mounted about 10’ off the floor in the middle of the barn so I’m not sure if I’ll need to experiment with different heights and/or location.

My son does some body work on cars (bondo and sanding) in part of the barn so when we’re both working on projects we can create quite a bit of dust!

View mnguy's profile

mnguy

161 posts in 2063 days


#11 posted 07-22-2014 03:13 PM

Notw – an air cleaner will do wonders at reducing that layer of fine dust all over the shop. I started with a box fan + pleated furnace filter, and that helped a lot. Moved up to a JDS air cleaner. I still have dust, but it is mostly the coarser stuff that misses the dust collector. The fine stuff that gets thrown into the air mostly ends up in the air cleaner.

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BCNabe

7 posts in 750 days


#12 posted 07-22-2014 03:29 PM

mnguy – good to know. I have a JDS cleaner. I also have a couple furnace blowers that I’ve just been using as air movers for cooling. I can make boxes with filters if the JDS isn’t enough.

View skatefriday's profile

skatefriday

158 posts in 148 days


#13 posted 07-22-2014 04:20 PM

An arduino, 120v relay, and this $10 motion sensor

https://www.sparkfun.com/products/8630

would do the trick. Put the fan and arduino (with a 5v power supply
of course) on the same switch. When you walk in to the shop
turn on power, program the arduino to turn on the relay and then
watch the motion sensor, and turn off the relay after 60 minutes of
no activity. When you reenter the shop toggle the power switch to
reset the arduino and turn the fan back on.

View Notw's profile

Notw

80 posts in 419 days


#14 posted 07-22-2014 04:25 PM

Thanks for the feedback BCNabe and mnguy, i have the fan with a furnace filter now (when i remember to turn it on) so upgrading to a real air cleaner with a remote would prompt me to turn it on and keep it on more often. Thanks again

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