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I need to remove the intermatic switch from my wall.

The last expert aid to remove the plate, but I do not see how to do this. There are no screws visible. Do I need to remove the knob. Thanks

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If this timer has one knob, there should be two removable pins put one pin into the time you want to start and put the other pin in the time you want it to stop. Then set to current time

Posted on Jul 28, 2009


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Posted on Jan 02, 2017


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How to remove a Intermatic 30 Minute Spring Wound Timer FF30MC

FF30 Intermatic timer: The turning knob pulls off.
(With some really old models, 1960s, there is a small set screw on the fat end of knob.)
Under the knob is a small hex nut that twists off to remove plate.

Oct 22, 2012 | Spring Step Intermatic 30 Minute Spring...

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Two year old salt system. Went to manually turn on pump/sweep and found it not working. Upon inspection, found the bottom plastic portion of the timer mechanism has melted and there is a smell of...

T104 is 240Volt heavy-duty timer rated for 40amps.
Open following link to identify timer and correct wiring:

1) Since fire occurred at screw terminals, then wiring is best suspect, and not timer.
The timer clock motor consumes 3 watts of power and does not get hot, and is not located near the screw terminals where melting occurred.
The switch connections are mechanical and are also not located near the screw terminals.

2) Turn off power, remove plastic cover, take photo of wiring.
Post photo of wiring on Flickr, and then add a comment with link to photo.
Also include amp rating of circuit breaker, and amp rating of salt system.

3) To confirm cause of timer failure, timer can be sent to Intermatic:
Intermatic would also want to see a photo of wiring.

4) If wiring area is overheated, possible causes can include too much amp draw or loose wiring.
For example, if stranded wire and copper wire are under same terminal plate. Or two different gauge wires are under same terminal plate.
When electricity travels along copper wire, the wire is heated. If terminal is not screwed down tight, or wiring under the screw plate becomes loose from heating-and-cooling of wires, or different types of wire under same plate, then the loose wire begins to arc and cause melting and burning.
Other causes can be undersized wire, nearby lightning strike.
Several factors including loose wire can combine together and cause problem.

5) Fire safety:
The timer is enclosed inside a box to prevent overheating occurrences from causing a fire.
The closed box starved the fire of oxygen, but the heat melted plastic parts.
This is why timer box covers should always be kept closed, and why circuit breaker boxes are covered with heavy steel cover and door, and why each switch and outlet has a cover, and why all covers should be kept screwed down tight. No electrical connection should be open to air.

6) Take a moment and rate answer:
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.

Aug 28, 2011 | Intermatic T104M 208-277Volt 40-amp Timer...

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Intermatic in wall timer , will not switch off. "no Op" shows on screen. I replaced battery.

You posted under Intermatic battery-operated in-wall timer.
That means you have EJ500, ST01C, EI600 timer or EI400.

1) No-op means fatal operation error, and timer needs to be replaced.

2) Since fixya customers only like good news:
Intermatic has 1 year limited warranty on these timers if you can demonstrate proof of purchase.
As of right now, April 2011 Intermatic website is closed weekends.

3) You can try re-seting timer by holding down on-off and then pushing reset button momentarily. Keep holding on-off button until display changes, then release on-off. Then reprogram timer.
Instructions show that resetting timer is last-resort troubleshoot, and if timer does not function afterward, then timer has fatal malfunction.

4) I read where no-op can be fixed by opening timer and adding oil to a gear, but I cannot confirm this and am not going to take apart my test timers.
Since your timer is not working, please take it apart and then add a comment to this thread to confirm or repeal the oil-gear suggestion. I would very much like to know this information, and you can add a photo to your comment showing others how to do it.

Add a comment for more free help

5) Pay: Also 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.

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1) If breaker tests 240V, but testing across timer terminals 1 and 3 shows 120V, then wire to timer is suspect.

2) Check that screws on timer and on breaker are tight.
Double check voltages again.

3) Look at timer terminals, no plastic insulation can be under the screw plate.

4) Move wire to another same-size 240V breaker and try circuit again.

Add a comment with your experience so others with same-similar problem can benefit.

Also 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.

Apr 10, 2011 | Intermatic T104 24h 208-277v Mechanical...

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Need to be able to disassemble an intermatich FD2HW - take the plate off the wall to paint the wall. Not sure if the timer buttom pops off or unscrews to remove it? Not like my other light switches which...

The knob pulls off.
Use small screwdriver to pry it up.

Really old FD and FF series timers, the knob has tiny set screw in end of knob.
I haven't seen one with set screw for years

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The knob pulls off.
Use a screwdriver or fingernail file to pry up.

Some really old timers, the knob attaches with a tiny screw located on the knob.

Dec 23, 2010 | Intermatic Spring Wound Wall Switch Timer

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How do I remove the knob so I can remove the back plate without breaking anything?

Most of these wil just pull off, but some has a small set screw on the knob.

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Describe how I would remove my Intermatic fan switch from the wall.

Take cover screws out. Remove screws from switch to box. Remove switch. (power off)

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How do i remove it from my wall

simple remove the plate then there are two screws that you need to unscrew then you pull the whole thing out.

Jul 12, 2009 | Intermatic Hardware & Accessories

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Remove Intermatic 60 min. wall timer face plate only from wall

That knob should just pull straight off. Check to make sure there isn't a tiny set screw on the side, but otherwise you can pull it off and remove the cover plate.

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