Question about Intermatic K4221C Photo Cell Control 120 V 50/60 Hz. 1800 Watt "T" Swivel M

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I need a photo cell that will handle an 18 amp load.

I am running neon transformers on one circuit, 18 amps total, The K4121 that I have now is overloaded. Do you have a photo cell that will handle 18 amps. 120 volt?

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I didn't find one. i recommend a relay circuit. use low current to switch high current.

Posted on Dec 17, 2008

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How to connect an omron h3y timer into a circuit


I see your comment to ignore:
To protect timer, read following:

1) Max load on this timer is 5 amp at 240volts
http://waterheatertimer.org/pdf/Omron-H3YN0302.pdf

2) If load exceeds 5 amps, then use timer to control contactor.
Here is crude drawing showing basic wiring for pin timer controlling heavy amp load.
http://waterheatertimer.org/images/10-pin-wiring2-1000.jpg

3) If amp rating on incoming wires exceeds 5 amp, for example is circuit breaker feeding circuit is 20-30 amps etc, then protect wires to timer using busman in-line fuseholder with fast-acting 5 amp cartridge fuse.

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Geyser timer stopped working


Check circuit breaker.
Click fully off and then back on.
Check for burned smell at breaker or loose crackling sound that says breaker is bad.

Reset timer. Then Reprogram.
Possible geyser timer manual
http://waterheatertimer.org/pdf/Digital-Geyser-Timer 24H-7-Day-Timer-230V Brochure.pdf

This timer has a non-replaceable internal rechargeable battery.
If battery has gone bad, then timer is defunct.

Use manual override button to turn timer ON-OFF.
Then test across terminals 3 and 4 for 240Volts.
Turn timer OFF, and test across terminals 4 and 5 for 240Volts
If no voltage shows then timer does not have output.

If test shows 80% undervoltage, that can cause load not to activate, depending on type of load.
Have electrician check for voltage issues at power company transformer.

Unknown what load timer is connected to.
Max load for this timer at 240 volts is 3680 watts, 16 amps.
Motor load is 230 volt 8 amps.
Check label on load for watt or amp rating.
Volts x amps = watts
Watts divided by volts = amps

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1 Answer

No output from Orbit transformer Model # WT41-2600300AU, transformer rated output is 26volts, 300ma. Only transformer I have been able to find is Orbit # 57040-10C, 24vac, 750 ma. Is this supposed to be...


The 750 ma transformer is fine. The only concern you have is that it matches voltage. The higher amperage is what it is capable of delivering. It would be like plugging a radio into a circuit with a 15 amp breaker or a 20 amp breaker. My transformers are 1250 ma, 24 volts. The 24 volt transformer will probably give you the 26 volts of your old unit. It is fine to use.

Gary

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1 Answer

I have a dayton model 2e353a timer to turn my pool off & on. It's quit keeping time & allowed pool motor to run constantly


Replace defective timer with new one.

Did you include correct product number?
Dayton is owned by WW Grainger.
Grainger site does not show that timer number.
Internet search does not show that timer.
http://www.grainger.com/Grainger/wwg/search.shtml?searchQuery=dayton+timer&op=search&Ntt=dayton+timer&N=0&sst=subset

Add a comment and describe timer in detail, and include photo posted on flickr, include number of pins or contact markings, voltage of control circuit, voltage of load circuit, and type of pump (1 or 2-speed) with HP rating for possible new timer recommendation.

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1 Answer

How do you determine if the photo cell is working?


If testing during the daytime, run two or three wraps of black tape over the photo eye and the load should turn ON after a minute or so. Take the tape off and the load should turn back OFF. To check to see if the load works remove the photo cell from the circuit and temporarily wire the load straight into the circuit and see if it comes ON.




Jan 17, 2011 | Intermatic K4221C Photo Cell Control 120 V...

1 Answer

Lights come on for about 2 min.and shut off. I turn off transformer for about 15 mins and turn on lights work for about 2 mins.


Unless you have the optional photo cell, I'd imagine you are overloading the transformer. Total up your lamp wattage and be sure it is less than the 300W rating of the transformer. The lights usually range from 10 to 50 watts, so you could have 30-10watt lamps or 6-50 watt lamps. The other possibility is that you have a short in your wiring or fixture. In either case if you overload the transformer it should cycle off to protect from overheating, and when it cools, it will restart. Try connecting just one luminaire to the transformer and see if it works. See link:http://www.malibulights.com

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3 Answers

Need to know watt output for PB115M1.


The timer has an amp rating for the contacts that switch the load you want to control. It will give you the contact rating on the door. For Wattage conversion, multiply the amps x volts= watts

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Malibu Light Transformer ML121RT troubleshooting


1) Disconnect the plug.
2) Remove the 3 hex screws holding the cover.
3) Make a note of all connections (taking a picture is even better).
4) Connect the black power wire to the red transformer wire.
5) Connect the white power wire to the white transformer wire.
6) Set your voltmeter to 20 or 50 volts AC (not DC and not less than 15 volts).
7) Plug the transformer in the wall.
8) Test the voltage coming from the A & B connectors at the back (polarity is irrelevant).
If you see 12 volts or thereabout, the problem is with the little switch (the one with the black and red wires that is activated by the trippers on the clock dial). I have the exact same problem but I have been unable to locate the part so I am going to try to clean the contact points and see if that works.

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1 Answer

I have a 600w transformer and it have 2 300w circuits. Can I use 600 watts through one line i circular line?


There are two sets of terminals on the 600 watt x-former. If you have two 300 watt circuits, use one 300 W circuit on one output, and the other 300 W circuit on the other output. Use terminals A & B on each side. Each circuit will have 12 volts.

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