Choosing the right timer

[MDP]

My timer is no longer working. I got two 101M Intermatic timers (one 120v and the other 240v) -- but found that none of them is the right match.

I am guessing this is 103M (which is no longer in production, but available on eBay/Amazon etc.) -- but looking into the photos of 103M, the wiring looks somewhat different. [in my timer the two wires from the motor go to pins 2 a& 4 from left, but in the 103M picture on eBay etc. they go pins 1 & 2).

The model # on the timer is E10694 (both the Intermatic timers that I got have this number).

I am attaching couple of photos (including photo of the timer, wiring, motor in the back etc.). Can anybody please let me know which model exactly should I buy?

BTW: I checked the voltage (between pins 2 and 4 from right) and this is 120v.

Thanks in advance.

-MDP

 

[JasonLion]

That looks like a Intermatic 104 to me.

 

[MDP]

Thank you JasonLion for your response. The wiring is exactly same as Intermatic 104; however 104 is 240v, but mine is 120v; that is the caveat.................................

 

[JasonLion]

My guess is that they were originally regular 104s, but at some point someone switched the timer motor for the 120 volt version of the timer motor.

If that is indeed a 120 volt setup, it is wired incorrectly. The white wire should not be switched on a 120 volt setup.

Have you measured the voltage? The wire colors say 120 volts, but the timer terminal layout and wiring plan say 240 volts.

 

[MDP]

Thanks again JasonLion. Yes, I did measure the voltage and this is indeed 120v (between the two motor wires)!

Do you think this will work if I replace the timer with T104? Does a 240v timer work on 120v set up?

 

[JasonLion]

Ideally you should switch to a t101 and only switch the black wire.

The t104 will not work out of the box, as the timer motor it comes with requires 240 volts.

 

[MDP]

Should I get the 120v T101 or the 240v? And how should I change the wiring? Sorry, too many questions -- but really appreciate you responding so quick!

 

[JasonLion]

The t101 is by definition 120 volts. You wire the black wire the same, and simply connect all the white wires together. There will be a clear diagram included with the new timer.

 

[MDP]

Great. So here is my understanding, please correct me if I am wrong:

Tie both the white wires and connect them on the left most pin (currently no wires attached to this) [2nd picture from top]
Connect the left black wire on pin # 2 (from left)
Connect the right black wire on pin #3 (from left)

 

[MDP]

Just checking if anybody could offer advise on the timer wiring questions above..... Thanks in advance...

 

[n240sxguy]

On the t101 you will run both white wires on the "A" pin on the left. Your black coming in will go to pin 1, and pin 2 will go to your pump.


Sent from my iPhone using Tapatalk

 

[Divin Dave]

:google:
T101 manual with wiring diagram
http://www.intermatic.com/~/media/I...es/24_Hour/T100_Series/T101_Instructions.ashx

 

[MDP]

Thank you very much n240sxguy and Divin for your kind responses.