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#197796 - 12/20/10 06:48 PM 120V 15/20 AMP 5 SEC SW  
BobV3CORP  Offline
Member
Joined: Feb 2006
Posts: 22
Watertown, Ma USA
Does anyone know of a manufacturer/part number that:

Switch on a 120v 15/20amp circuit with a motor load of about 1.5 amps. When the switch/button is pushed in the switch would remain active for only 5-10 seconds? This would be used to engage a toilet pump motor for that time period and then cycle off automatically.

Thanks,

Bob


BobV

Work Gear for Electricians and the Trades

#197798 - 12/20/10 07:01 PM Re: 120V 15/20 AMP 5 SEC SW [Re: BobV3CORP]  
mikesh  Offline
Member
Joined: Jun 2006
Posts: 613
Victoria, BC, Canada
A time to off TD relay controlling a motor starter.
Press the button and the relay closes, activating the starter. The TD starts counting down then opens the control contact and the starter opens. All a pretty basic Time delay circuit.


#197801 - 12/20/10 07:46 PM Re: 120V 15/20 AMP 5 SEC SW [Re: mikesh]  
BobV3CORP  Offline
Member
Joined: Feb 2006
Posts: 22
Watertown, Ma USA
Thanks Mike. Unfortunately I don't think that would look to good in a homeowners finished bathroom. I was wondering if anyone knows of a device made by a company such as leviton that might fit into an old work box.

Bob


BobV

#197802 - 12/20/10 08:36 PM Re: 120V 15/20 AMP 5 SEC SW [Re: BobV3CORP]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,085
Estero,Fl,usa
Could you put the delay off relay at the pump?


Greg Fretwell

#197803 - 12/20/10 08:45 PM Re: 120V 15/20 AMP 5 SEC SW [Re: gfretwell]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,833
Brick, NJ USA
Without getting in to deep, how about one of those Intermatic (or others) timers? Don't know if they have one in seconds, but they do in minutes & hours.


John

#197806 - 12/20/10 09:12 PM Re: 120V 15/20 AMP 5 SEC SW [Re: HotLine1]  
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
Why re-invent the wheel?

I'm not clear as to the application - but obviously the pump is used to either empty something or fill something.

A small plastic sump/tank, holding both the pump and a float switch, would only run aslong as it took to pump out a 'flush.' Or, a similar arrangement would fill the tank.


#197808 - 12/20/10 09:21 PM Re: 120V 15/20 AMP 5 SEC SW [Re: renosteinke]  
Tesla  Offline
Member
Joined: Jun 2004
Posts: 1,273
Sacramento, CA
A correctly plumbed watercloset will have an ejection pump if needed.

Is someone improvising?

If you need to use an ejection pump there is NO WAY you can have any confidence in a time delay circuit.

Further, these and similar pumps don't like to pump dry.

I'd leave all of the design to a plumber and step back.


Tesla

#197809 - 12/20/10 11:16 PM Re: 120V 15/20 AMP 5 SEC SW [Re: BobV3CORP]  
BobV3CORP  Offline
Member
Joined: Feb 2006
Posts: 22
Watertown, Ma USA
Tesla is probably right but I thought I would see if someone had a simple fix solution. The uit is located behind the toilet and exposed. So there isn't anywhere to put any equipment. The existing float switch apparently has failed. The unit is sealed and is not intended to be accessible for repair. The cost of replacement is more than the owner can afford at this time and was hoping there might be a temporary solution in the meantime.


BobV

#197810 - 12/21/10 12:12 AM Re: 120V 15/20 AMP 5 SEC SW [Re: BobV3CORP]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,085
Estero,Fl,usa
This may work for you. It will hold the load from 1 second to 24 hours per button press.

http://www.intermatic.com/products/timers/in-wall%20timers/digital%20auto-off%20timers.aspx


Greg Fretwell


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