Question about Intermatic T104-20 Indoor Hot Water Timer

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How do you set up the 12 set points on the t104 when it only gives you two parts to do time

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For Intermatic T100 series timers, you simply need to buy more trippers.
Buy extra trippers from Granger:
Notice also that they sell clock motors for Intermatic timers.
http://www.grainger.com/Grainger/timer-accessories/timers/electrical/ecatalog/N-8hi


Another thing to keep in mind is that minimum on-off time for Intermatic T100 series and WH series timers is 1 hour.
That is because the trippers are so wide.

For more precise control over timer, and 1 minute on-off times, you can consider electronic timer:
http://waterheatertimer.org/Boxtype.html

If you have specific job for this timer, add a comment and say what timing specifications you face, and I might be able to recommend a timer choice if current timer is not right.

Add a comment for more free help.
Also take advantage of fixya expert assistance live.
For a price, expert works with you via e-mail or phone while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Posted on Feb 23, 2011

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1 Answer

The "little gray box"


You need 2 ON trippers and 2 OFF trippers.
Part number 156T1976A sold at WW Grainger etc.

1) Copy following links for WH40 little grey box Intermatic timer operation and resources:
http://waterheatertimer.org/pdf/How-to-operate-and-set-T104-timer.pdf
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T104

2) WH40 timer is identical to T104, same replacement parts, same operation, same wiring options, except the grey box timer has override lever that sticks out of box. Both WH40 and T104 have override levers, the WH40 override can be moved without opening box door.
This allows you to use the WH40 as ordinary on-off switch if the trippers are removed from dial.

Jan 25, 2013 | Intermatic Hardware & Accessories

1 Answer

How to reset the time pointer accidentally unscrewed from an Inter-matic T101 timer?


T101 Timer has silver pointer that is stationary, and points straight downward.
Copy following link for step-by-step instructions setting T100 series, and links to wiring and replacement part identification:
http://waterheatertimer.org/pdf/How-to-operate-and-set-T104-timer.pdf

Nov 04, 2012 | Hardware & Accessories

1 Answer

I have unscrewed my tier pointer by mistake to coincide with the current time on my T21004R timer. Now I cannot get into start and turn off where my on and off indicators are set. How do I correct thi


T21004R is single 240Volt T104M mechanism inside a 60 amp control panel.
The T100 series timer has stationary pointer that is supposed to be straight downward. Move pointer into downward position and apply bit of super glue to hold in place, or just remember where it should point.
Copy following links for instructions how to set and use the T104 timer.
http://waterheatertimer.org/pdf/How-to-operate-and-set-T104-timer.pdf
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#pool

The T104 timer is rated for 40 amps, and is usually repairable, uses WG1573 replacement clock motor, and 156T1978A trippers. Trippers are made of softer metal and are designed to wear out before wearing down timer mechanism.

Jul 20, 2012 | Intermatic T21004R- Pool-Spa Mechanical...

1 Answer

T104 intermatic stationary pointer moved to the side


T104 pointer is stationary and is supposed to be pointed straight down, assuming timer is installed in vertical position.
Move pointer until it points straight down and apply bit of super glue, or just remember correct location.
Copy following link for detailed information:
http://waterheatertimer.org/pdf/How-to-operate-and-set-T104-timer.pdf

Jul 15, 2012 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

Moved pointer intermatic T104


The time pointer is supposed to be stationary.
On T104 timer the pointer is stationary pointed downward at 6:00 position. So you can move it so it is pointed straight down and add a bit of super glue where pointer meets stem.
Copy following link for instructions how to set T104 timer:
http://waterheatertimer.org/pdf/How-to-operate-and-set-T104-timer.pdf

Jul 05, 2012 | Intermatic T104 24h 208-277v Mechanical...

1 Answer

HOW TO SET INTERMATIC T104R


Open following link for instructions how to set T104 timer:
http://waterheatertimer.org/pdf/How-to-operate-and-set-T104-timer.pdf
The T104 is 240volt timer, and the R suffix means timer is inside raintight indoor/outdoor enclosure.

Jun 14, 2012 | Intermatic T104 24h 208-277v Mechanical...

1 Answer

I removed the staionary pointer, Is there a special alignment to put it back. for the T101-70


Thank you for including timer model number.
Stationary pointer is pointed at 6:00 position on T100 series timers.
Pointer is not functioning part of timer mechanism except to point location for current time.

Open following links for resources:
http://waterheatertimer.org/images/Stationary-pointer-a2-415.jpg
http://waterheatertimer.org/pdf/How-to-operate-and-set-T104-timer.pdf
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

Aug 02, 2011 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

I need to know how to set this timer for a large swimming pool, and how long I need it to run, to keep it clean. I believe it is about 35,000 gals., in-ground pool.


You have Intermatic mechanical timer connected to swimming pool pump/filter.
Open following link to read about setting timer:
http://waterheatertimer.org/pdf/How-to-operate-and-set-T104-timer.pdf
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html
Lift and rotate dial until current time is lined up with stationary pointer.
Put on-off trippers on outer edge of dial.
Timer comes with 2 sets of trippers, and you can order replaceable trippers. Up to 12 sets of trippers can be added to dial for a total of 12 ON and 12 OFF events each 24-hour period.
For 35000 gallon, pump should run at least 6 hours each 24-hour period. During freezing weather, if pipes are above ground, you can remove trippers from dial, set override lever to ON position, and run pump 24-hours to prevent frozen pipes.

Jul 12, 2011 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

I have Intermatic Model T104 timer for my pool. The power went off a few days ago, and i have not been able to set it where i wanted it since. I do not have a manual. The pool contractor didn't...


Open following links for T104 timer manual and information, and then add a comment for more information.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html
http://waterheatertimer.org/pdf/How-to-operate-and-set-T104-timer.pdf

To set timer, lift and rotate dial until current time lines up with stationary silver pointer.
Stationary silver pointer is pointed at 6:00.

Jun 24, 2011 | Intermatic Industrial 24 Hour 120v...

1 Answer

I am trying to learn how to set up the T104 timer etc. I just moved in and there is no manual how to set timer.


Here are two links that will be handy to keep on file:
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html

T104 is 240Volt timer.
When you open the door, there should be piece of translucent plastic covering the wiring.
As long as plastic cover is in place, it is safe to touch visible timer parts.
If you have a child who might stick something into the timer, then lock timer door.
As a general rule with electrical devices, do not stand on bare ground or wet surface or lean into or touch anything metal while working on timer. Put down dry boards. Same with your circuit breaker panel.

The T104 yellow dial rotates just like a clock.
The dial has ON and OFF trippers attached to outer edge of dial.
As these trippers rotate around they move on-off lever that turns the pool pump or Load on and off.
ON tripper moves lever one direction, and OFF tripper moves same lever other direction.
The manual override lever clicks back and forth with audible sound each time tripper moves on-off lever.

Move manual override back and forth and it will turn Load on and off.
Override should snap crisp and clean.

To set timer, lift and rotate dial until current time lines up with stationary silver pointer.
Stationary silver pointer is pointed at 6:00.

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

May 22, 2011 | Intermatic & Indoor/Outdoor Rain Tight...

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