Question about Intermatic T104 24h 208-277v Mechanical Time Switch

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I have an Intermatic pool pump timer. The motor for the clock is running, but the on switch will not trip however off works fine.

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Make sure you have the 'on' tripper and not two off trippers

Posted on Oct 02, 2009

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Pool time switches pool on, but off does not trip off, and can't do it manual. When I push it on off, the pool pump tries to stop but continutes running. Have to use breaker box.


Model number of timer is not known.
Is this new installation? Or installation that worked before and recently stopped working?
If the manual override lever on timer does not turn Load on-off, then 1) wiring is wrong or 2) timer has gone bad or 3) pump has a short.
I suspect a short since you say the pump 'tries to stop running.'
Copy following links for troubleshoot walk-thru, and correct wiring:
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timers.html
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html

Jun 28, 2012 | Intermatic T104 24h 208-277v Mechanical...

2 Answers

Intermatic T104 timer wont turn pump on,despite being tripped


If override lever snaps back and forth crisp, and turns pump ON-OFF, then timer switch is good.
Try installing new trippers. The trippers wear down and start to slip over the trip lever.
If pump does not turn on-off with override, look for loose wires at breaker or pump.
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timers.html

Jun 06, 2012 | Hardware & Accessories

1 Answer

Hi - My Intermatic T101P3 timer motor stops after it turns off the pool pump. I have one start and one stop time in a 24 hr period. I have to manually start the pump at the timer in the morning,...


Sounds like the clock leads are on the wrong posts, or at least the hot one is. If if was moved to the load side then manually starting the timer will also power up the clock motor. As soon as the clock trips the off timer, the pump and the clock motor are both off. Examine the clock leads to the wiring diagram inside the clock box cover to ensure they are connected correctly. I bet you'll find one of the wires is misplaced.

John

Aug 31, 2011 | Intermatic T101P3 Pool Timer IndoorOutdoor...

1 Answer

My pool sweep had been doing fine. Now the new pump seems to be dragging as if it is running on half power and the sweep crawls slowly. The pump gets hot and shuts off. The pool filter pump on the left...


My opinion is that new pump is defective.

You posted under Intermatic pool timer.
The timer will not have any effect on the new pump overheating.

Insufficient wiring can cause new pump to overheat.
However if wiring is undersized, and/or if both pumps are turned ON at same time, the circuit breaker would get hot and trip.

Instead of the breaker tripping, your new pump is getting hot, and turning off.
Remember, any pump that slows down and overheats is getting damaged.
Replace the defective pump.

Feb 28, 2011 | Intermatic T10404R - two 220 time clocks...

1 Answer

The timer clicked OFF but poot pump kept running. Had to trip breaker to stop pool pump.


Your Intermatic timer has a manual override.
The override is a good diagnostic.
Click the manual override and see if pump turns on and off.

Next, watch if the clock is rotating.
If the clock is rotating, the OFF tripper may be worn out and you need a new tripper

geno_3245_4.jpg

If the clock wheel is not rotating, you need a new clock motor.
If you have T104, your clock motor is 240Volts
If you have T101 or T103, your clock motor is 125Volts
Buy trippers and clock motors at Grainger
Clock motor replacement takes a small star-screwdriver bit
http://www.grainger.com/Grainger/timer-accessories/timers/electrical/ecatalog/N-8hi

If your manual override is not working, then the gears might be rusty and need to be cleaned or your timer needs to be replaced.
You can buy same model number timer and then swap the insides without changing boxes.

Add a comment if you need more help.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html

Nov 02, 2010 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

Intermatic timer for my pool pump - clock is not running


Usually the timer motor is bad when that happens. Replacement timer motors are available from websites like this one:
http://www.aplussupply.com/intermatic/timermotors.htm

Be sure to get the right voltage timer motor. Intermatic T101's and T103's use a 120 volt timer motor (Cat# WG1570) and the T104 uses a 240 volt timer motor (Cat# WG1573).

If you don't want to mess around replacing the timer motor, you can purchase a new timer, and as long as the existing enclosure is in good shape, just swap out the guts.

May 12, 2010 | Intermatic & Indoor/Outdoor Rain Tight...

2 Answers

T104 clock stopped running. must now use switch


Yes, you can replace the timer motor to solve the problem. For the Intermatic T104 you'll need to purchase the 208/277 volt timer motor. Part number is WG1573.
http://www.aplussupply.com/intermatic/timer.htm

If you don't want to mess with replacing just the timer motor you can purchase a new timer and swap just the guts with the old timer as long as the existing enclosure is still in good shape.

Mar 17, 2010 | Intermatic T101R3 110 volt time clock in a...

1 Answer

I have an Intermatic pool pump timer. The motor for the clock is running, but the on of switch will not trip. I made sure the stop/start pins are properly on. I did recently replace the switch below for...


If the motor doesnt have enough power to trip the switch you will have to replace it. The motor assembly is replacable without having to replace the whole box. I know you can get them at Lowes and Home Depot.

Sep 25, 2009 | Intermatic T104 24h 208-277v Mechanical...

1 Answer

Clock works, but timer does not trip power


After thoroughly going through the diagnostics, I found that the timer was fine. It wound up that the pump was burnt out.

Aug 24, 2009 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

Once T101 Timer Shuts Off will not turn back on


you have the hot and load reversed. the power source should connect to terminal 1. the wire going on to the pool pump should be hooked to terminal 2.

the clock motor is powered off terminal 1 and A is the neutral.

what u have done is hooked the power source to #2 and the load to #1, simply switch them and everything should be fine, here is a link to the wiring diagram for the timer.

http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/t101%20-%20english.ashx

Aug 22, 2009 | Intermatic T101 - 24 Hr. Dial Time Switch...

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