Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-26-2012, 07:05 AM   #1
Newbie
 
Join Date: Apr 2011
Posts: 11
Share |
Default

Mechanical timer not toggling power on and off


Hi guys,

I have a Torx 7200 and, while the main wheel turn and the switch "clicks" each time the pins hit, the power doesn't toggle on or off. Is this an easy (cheap) fix or do I need to buy a new timer? By the way, it is controls my pool pump.

Thanks
Attached Images
 

CarlosHRNYC is offline   Reply With Quote
Old 04-26-2012, 09:50 AM   #2
Member
 
Code05's Avatar
 
Join Date: May 2009
Location: Easton MD
Posts: 1,841
Default

Mechanical timer not toggling power on and off


It looks like both on and off pins are right next to each other. There should be a timed separation.

Push the the on switch down and see if you have power.

If yes, the pins need reset, they can become loose.

Code05 is offline   Reply With Quote
Old 04-26-2012, 09:54 AM   #3
Member
 
Code05's Avatar
 
Join Date: May 2009
Location: Easton MD
Posts: 1,841
Default

Mechanical timer not toggling power on and off


Is the ground wire missing?
Code05 is offline   Reply With Quote
Old 04-26-2012, 10:01 AM   #4
Newbie
 
Join Date: Apr 2011
Posts: 11
Default

Mechanical timer not toggling power on and off


Hi Code,

They actually were set apart. I took the photo after I had loosened them up and shut the breaker.

I would manually push the on and off switches and the pump would still run. Maybe a connection is stuck together or something wrong with the wiring?
CarlosHRNYC is offline   Reply With Quote
Old 04-26-2012, 10:47 AM   #5
Member
 
Join Date: Nov 2011
Location: Md/Pa
Posts: 1,053
Default

Mechanical timer not toggling power on and off


My guess is that the switch contacts are stuck together due to arcing or normal wear. How long has this timer been running the motor? Is the timer hp rating large enough to run this motor?
zappa is online now   Reply With Quote
Old 04-26-2012, 11:17 AM   #6
Newbie
 
Join Date: Apr 2011
Posts: 11
Default

Mechanical timer not toggling power on and off


The timer seems to be in good condition. I pulled the mechanical out of the box and took a few more pics of the back connections. The first is while engaged in "on" position. The second is "off". I also threw in the diagram on back of the door.

It's raining today so I don't think I'll be testing the circuit today. Maybe this weekend.
Attached Images
   
CarlosHRNYC is offline   Reply With Quote
Old 04-26-2012, 11:30 AM   #7
I=E/R
 
a7ecorsair's Avatar
 
Join Date: May 2010
Location: Minnesota
Posts: 2,052
Default

Mechanical timer not toggling power on and off


I don't see the black wire that enters at the lower right connected to the timer.
a7ecorsair is offline   Reply With Quote
Old 04-26-2012, 11:37 AM   #8
Member
 
joed's Avatar
 
Join Date: Mar 2005
Location: Welland, Ontario
Posts: 7,530
Default

Mechanical timer not toggling power on and off


Tell us what wires are what in there. I see blue and red and two whites connected together. Blue should be power and red should pump.

It's hard to tell from the pics but it looks like the points might not be opening in the off position.
__________________
Do not PM with questions that can be asked in a forum. I will not respond.
joed is online now   Reply With Quote
Old 04-26-2012, 12:07 PM   #9
I=E/R
 
a7ecorsair's Avatar
 
Join Date: May 2010
Location: Minnesota
Posts: 2,052
Default

Mechanical timer not toggling power on and off


Some additional info.
After looking at the pictures and diagrams, this timer must be in a switch loop. As pointed out, maybe the contact is going bad. BUT there are contacts for two loads. You could move the blue wire over one to the right and the red wire one to the right.
a7ecorsair is offline   Reply With Quote
Old 04-26-2012, 12:08 PM   #10
Newbie
 
Join Date: Apr 2011
Posts: 11
Default

Mechanical timer not toggling power on and off


The black wire comes from the main going into the sub panel next to the timer. One breaker goes to the pool lights, and the other to the timer then to pool pump.

In the timer: The blue and white wires go from pump breaker to timer.

The red goes from timer to pool pump.

From the sub panel: the red (from the timer) , white and green (from the breaker) go to pump.
CarlosHRNYC is offline   Reply With Quote
Old 04-26-2012, 12:22 PM   #11
Member
 
Code05's Avatar
 
Join Date: May 2009
Location: Easton MD
Posts: 1,841
Default

Mechanical timer not toggling power on and off


Is the timer stuck in the on or off position?
Code05 is offline   Reply With Quote
Old 04-26-2012, 12:25 PM   #12
Member
 
Code05's Avatar
 
Join Date: May 2009
Location: Easton MD
Posts: 1,841
Default

Mechanical timer not toggling power on and off


Quote:
Originally Posted by a7ecorsair View Post
Some additional info.
After looking at the pictures and diagrams, this timer must be in a switch loop. As pointed out, maybe the contact is going bad. BUT there are contacts for two loads. You could move the blue wire over one to the right and the red wire one to the right.
The motor run off the blues current position, but you could jumper over if those contacts work.
Code05 is offline   Reply With Quote
Old 04-26-2012, 12:30 PM   #13
Newbie
 
Join Date: Apr 2011
Posts: 11
Default

Mechanical timer not toggling power on and off


A7corsair: I think you may have something there.

The way the wiring is set up, when I toggle on and off, the connection above the blue stays put. It's the one over that connects and disconnects when I toggle. This may be the problem. I'll check it out over the weekend. Thanks for pointing that out!
CarlosHRNYC is offline   Reply With Quote
Old 04-26-2012, 01:27 PM   #14
Member
 
joed's Avatar
 
Join Date: Mar 2005
Location: Welland, Ontario
Posts: 7,530
Default

Mechanical timer not toggling power on and off


If too large a load was put on the timer the contacts could be welded together.
You must have a power wire on the first terminal and a neutral in the center for the timer motor run.
__________________
Do not PM with questions that can be asked in a forum. I will not respond.
joed is online now   Reply With Quote
Old 04-26-2012, 01:31 PM   #15
I=E/R
 
a7ecorsair's Avatar
 
Join Date: May 2010
Location: Minnesota
Posts: 2,052
Default

Mechanical timer not toggling power on and off


Quote:
Originally Posted by CarlosHRNYC View Post
A7corsair: I think you may have something there.

The way the wiring is set up, when I toggle on and off, the connection above the blue stays put. It's the one over that connects and disconnects when I toggle. This may be the problem. I'll check it out over the weekend. Thanks for pointing that out!
Quote:
Originally Posted by Code05 View Post
The motor run off the blues current position, but you could jumper over if those contacts work.
When cars had points in the distributor, we used to use a point file once in awhile to clean them up. You may have carboned-up points or some pitting so cleaning up the points may fix this. It is best to use a file but some use emery cloth which can leave particles on the points preventing them from closing. Alcohol and a strip from a manila folder will work well for cleaning up after filing.
If you try the other contacts, you will need a jumper as mentioned.

a7ecorsair is offline   Reply With Quote
The Following User Says Thank You to a7ecorsair For This Useful Post:
CarlosHRNYC (05-26-2012)
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.