How to Program an Intermatic T100 Series Timer

WRITTEN BY:  Inyo Pools

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The Intermatic T100 Series Timers are heavy duty time switch mechanisms. They are designed for commercial, industrial and residential applications. The following steps will provide a guide on how to program the T100 series timer.

Things You'll Need

Step by Step

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Step 1

The first part of programming the Intermatic timer is to set the current time. Locate the yellow Clock-Dial inside the timer box.

Step 2

There is a silver Time Pointer on the Clock-Dial. This Time Pointer will point directly to the current time.

Step 3

To set the time, pull the Intermatic Clock-Dial outward. Turn the dial in either direction and align the exact time of day on the Clock-Dial to the Time Pointer. The picture displays the timer set to 12:00 pm.

Step 4

The next steps will demonstrate how to set the trippers. The trippers will determine when the equipment will turn on and off.

Step 5

Locate the "On" tripper. The "On" tripper is typically green and will be labeled "On".

Step 6

To set the "On" tripper, hold the tripper against the desired time and tighten the tripper screw firmly. The picture displays the "On" tripper set at 8:00 am.

Step 7

Locate the "Off" tripper. The "Off" tripper is typically gold and will be labeled "Off".

Step 8

To set the "Off" tripper, hold the tripper against the desired time and tighten the tripper screw firmly. The picture displays the "Off" tripper set at 4:00 pm.

Step 9

The Intermatic T100 Series Timer is now programmed. Close the timer door and enjoy the energy savings of using a timer.

Step 10

Note: The timer has a red lever that can be used to manually override the current setting on the timer. If your timer is in "off" mode and you want to turn it "on", you can flip the red lever to "on". The timer will remain in "on" mode until the timer "off" tripper comes around or until you flip the lever to "off".

Comments

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(1 to 14 of 14)

monjoheart  Posted: 4/29/2018 

Thank you!!! when I moved into my house the time was already there in my tool house - operating an outdoor flood light. After a year the bulb blew and I couldn't find anyone to climb up HIGH to replace it for me. It's been 7 years! FINALLY a young man next door was able to climb up and replace the bulb. BUT THEN I discovered that over the years the "on" tripper had fallen off and was gone. I found the part on line and now have ordered it. It had been so long that I forgot how to set the machine. Your instructions reinstated my memory and it is working!!!! Thank you for the help.
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Anonymous  Posted: 4/18/2018 

This was a very helpful article. I appreciate your expertise.
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Inyopools  Posted: 1/24/2018 

Anonymous (trippers) - The two On and Off trippers are required to program the timer. They should be come with the timer often taped inside the cover. Check the packaging material. If you do not find them, check with your dealer. If you bought the timer from us, give us a call and we will ship them out to you.
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Anonymous  Posted: 1/18/2018 

The ON and one OFF tripper are not included . How would I go about setting the timer?
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InyoPools Product Specialist Dennis R.  Posted: 7/11/2017 

Anonymous (timer dial) - Your problem could be due to one of two failures. Either your clock motor is not running or your clock mechanism is jammed. See our guides on "How To Replace an Intermatic T104 Clock Motor" or "How to Replace an Intermatic T104 Mechanism".
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Anonymous  Posted: 7/10/2017 

If my yellow clock dial is not moving but my manual on/off red lever works....does anyone know what could be a remedy to get the clock dial running again?
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InyoPools Product Specialist Dennis R.  Posted: 8/12/2016 

Luna - See our guide on "How To Install an Intermatic T104 Timer". Note, this guide shows how to install a T104 series timer used for 220V circuits. If you have an 110V circuit, you will want ot buy a T101 series timer. The installation is the same.
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Luna  Posted: 8/11/2016 

how can I switch form manual to auto timer?
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InyoPools Product Specialist Dennis R.  Posted: 6/20/2016 

Timeconsumer - I assume that Polaris runs on 120V since the T101P timer is for 120V. You have 3 options to fix this timer: replace the whole timer; replace the timer mechanism; or replace just the timer clock. I generally recommend replacing the timer mechanism (includes the clock) since the gears tend to bind when the timer gets old.
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Timeconsumer  Posted: 6/18/2016 

I had an electrician come out and replace my timer for my pool pump. He wired everything differently because the pump is only on(digital screen) when the timer is on. Previously I had to shut off the circuit braker to have the pump not getting power. he replaced it with a T104P. The other timer for the polaris is T101P . The clock does not turn now.It worked last year. Is the wiring incorrect or could the clock just be broken. When I switch it on the polaris runs but not the clock. Can I just replace a part or do I need another Timer. Thanks
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InyoPools Product Specialist Dennis R.  Posted: 5/14/2015 

Wgbauer8 - Yes. The silver hour pointer is secured in a fixed position at 6-oclock.The yellow clock dial rotates around it. Sounds like you are good to go.
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Wgbauer8  Posted: 5/13/2015 

I accidently removed the silver permenant hour pointer when I was replacing the timer motor on my T-100 I put it back on as it was facing the "6 O' clock" position. Is this all I need to do ?
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InyoPools Product Specialist Dennis R.  Posted: 11/24/2013 

Manual Lever - The timer has a red lever that can be used to manually override the current setting on the timer. If your timer is in "off" mode and you want to turn it "on", you can flip the red lever to "on". The timer will remain in "on" mode until the timer "off" tripper comes around or until you flip the lever to "off". I will add this note to the guide. Thanks for your input.
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Anonymous  Posted: 11/23/2013 

The instructions should go one step further after installing the trippers.

There is a manual on off lever as well.

What should that be set at for automatic operation.


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