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How do I wire two telemecanique LC1DO910 contactors to operate periodically turning each other on and off. I am going use them to power water pumps, guided by float switches. All I need is how to wire the contactors.

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Interlocking. pump1. line 1 to auxiliary normally close contact of contactor #2 to holding coil of #1 contactor, line2 to float switch then to holding coil of #1 contactor.

Interlocking. pump2. line 1 to auxiliary normally close contact of contactor #1 to holding coil of #2 contactor, line2 to float switch then to holding coil of #2 contactor.



Posted on Dec 15, 2009

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Telemecanique makes great pumps but they make more then one model. More information is needed such as model number.

Jul 16, 2013 | Telemecanique ATV61WD18N4 Fan & Pump Drive

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How to wire a timer to delay a telemecanique LC1D4011M7


You need a delay contactor block that attaches to top of LC1D4011M7 contactor:
http://waterheatertimer.org/How-to-wire-Dayton-Off-Delay-Timer.html#block
Connect power to contactor block.
Connect Load to other side of contactor block.
When contactor activates, it activates delay timer.

May 31, 2013 | Hardware & Accessories

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How do I connect my Jandy AE-TI heat pump to my intermatic T104P3


1) Copy following link for wiring illustration ... assuming timer is supposed to control pool pump:
http://waterheatertimer.org/images/T104-to-contactor.jpg

2) T104P is 240Volt (208-277V) SPDT timer in P plastic outdoor enclosure.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T104

3) Jandy AE-TI is 208/230V pool heater.
http://www.bestbuypoolsupply.com/media/aemanual.pdf

4) Page 13 of Jandy manual shows single-phase residential wiring diagram.

5) First of all, power to main contactor is not interruped by timer, since this powers 24Volt transformer that controls the chip board and general operation.

6) The timer is connected to 'Auto-heat contactor.'
The confusion is what Load connects to this contactor? The water pump? Load is shown on diagram as 'pump time clock.'
I assume the load is the PUMP??

Dec 04, 2012 | Hardware & Accessories

1 Answer

I have a Fredrich 8000btu wall unit model number CPO8F10 and the compressor will not shut off, even when the unit is turned off the compressor keeps running. the only way to shut it off is to unplug...


If your air conditioner or heat pump compressor won't shut off unless you pull the fuses or turn off the circuit breaker. You probably have a stuck contactor. The contactor is the name we give to the big relay that controls your air conditioner, heat pump or other large electrical device. If the indoor blower fan will not shut off either then the problem is NOT the contactor in the outdoor unit but a problem with the thermostat or the wiring to it either at the subbase or the furnace. Before replacing your thermostat you should isolate the cause of the problem or it will persist and drive you nuts. Look for wires touching or cut too long. A contactor or relay is an electrical device that takes a control signal usually 12 volts DC, 24, 120, 208-230 volts ac and creates a magnetic field to pull in a set of contacts that controls another device that may or may not get its electrical power from the same circuit. Note: 99% of most control circuits are 24 volts AC. The contactor has steel contacts that are plated with silver. When the silver wears away you have just plain steel and the steel will weld itself together. Sometimes if you whack the contactor with a screw driver you may free it for a while but the problem will re occur. This problem is especially a problem when a piece of equipment has not been run for a period of time. It is normal for the contactor to wear out over time like brake pads on a car. If the contactor shows any signs of wear it should be replaced as a preventative measure or as part of maintenance. If you suspect a stuck contactor a 100% accurate test is to turn off the power to the indoor section which removes control voltage to the outdoor section and it (outdoor section) keeps running. Do not keep messing with it, your contactor it is bad and you will destroy your compressor if you let it run!!! You can also have problems with spiders building nests in the contactor; the silk is an insulator and will prevent electricity from flowing. Replacing a contactor is a simple matter and they are readily available. Costs vary from about $40 installed to several hundred dollars depending on the size and current carrying capacity. If your compressor does not shut off when it needs to and the indoor fan does you will destroy your compressor. The high and low pressure cut-outs won't work either.

Aug 20, 2011 | Friedrich Heating & Cooling

2 Answers

I want to add an under-counter auxiliary water heater to my 15A dishwasher circuit. I need to install some sort of relay to cut out the water heater when the dishwasher is being run, to avoid overloading...


If I understand correctly you have 15 amp breaker with 14gauge wire.
Total watt capacity of 15 amp breaker is recommended at 80% rated load = 12 amps

You want to connect two appliances to same 15 amp line.
1) You have 6 amp Dishwasher that draws 720 Watts
2) You have under the counter water heater with 1500 Watt element that draws 12.5 amps.
3) Combined load is 18.5 Amps and 2220 Watts, approximately
So you do not want dishwasher and water heater turned on at same time.
Makes good sense.

Solutions:
> Easiest thing would be to put water heater on ordinary wall switch located inside sink cabinet.
Back when garbage disposals first came out, garbage disposal switch was inside sink cabinet. You opened cabine door and flipped the switch.
> Next solution would be to put water heater on a timer located under the sink. There are different timers. In-wall timers and box-type

In-wall timer would need relay/contactor
A battery operated timer like the ST01C would not need to be reset after power outage
http://waterheatertimer.org/Programmable.html
Here are instruction pages for selecting and installing the relay/contactor.
http://waterheatertimer.org/H230A.html
http://waterheatertimer.org/Install.html
Add a comment any time.

Box-type timer like T101 120Volt timer. This timer needs no relay/contactor.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101
Timer needs to be reset after power outage, but operates on ordinary 120V power, and is simple to install.

> There is no easy way to wire the dishwasher and water heater together so one is certain not to operate when other is turned on. There are likely electronic control panels for that project. But since you know the hours when dishwasher is likely to be ON, then set water heater timer to turn OFF during those hours. Water inside tank will stay hot for a couple hours, so there is no loss.

It sounds like you are a solid electrician.
If needed, add comment any time for more assistance.

Dec 14, 2010 | Rheem 2.5 Gallon Electric 120V Water...

1 Answer

Fan Rons Furnaces run Heat pump or AC will not run


I would check to see the contactor is functioning. The contactor is the big switch looking thing in the middle. The power hooks to this. First check to see if it pulls when inside is calling for air. If it does not than check to see that there is 24V going to the coil of the contactor. The 24V wiring will be connected to the sides of the contactor. Some contactors have the two wires on one side (this is usually on a Rheem) If the contactor is pulling in check and see that you have at least 220V running through it. I suspect that one side of the contactor is burned or has ants or some thing in it. Remember you are dealing with high voltage and take appropriate precautions. The capacitor can hold electricity in it even if power to unit is shut off.

Jun 30, 2010 | Heating & Cooling

2 Answers

Why the condenser is still running when the split


If the thermostat is turned to off and the auto/manual
fan is turned off, nothing should be operating.
Turn power off to indoor unit, remove either the Red-
R terminals on control board or the wire going to the
terminal marked Y- which is used for cooling.

If you remove the red wire, put cover back on and restore power and the ubit shuts off, you have a
problem with the thermostat or thermostat wires the
wires that go to those to terminals need to be traced to make sure they are not touching.

If removing the Red wire does not stop condenser
from operating. Leave the unit on, go outside and
pull the disconnect, the unit will have to shut off.

That might tell me to look for a contactor that is
defective. If the contactor is still pulled in when you
turn off power, remove either the red or white low voltage wire, if the contactor releases than you have a problem with the low voltage wires going from the outdoor unit to the indoor unit

Jan 25, 2010 | Heating & Cooling

1 Answer

Ac wont shut off rheem gas pack unit is old


Turn off the power to your condensing unit.
Open the service control panel.
Look at the contactor and take one of the low voltage wires off of it.
If the contactor stays closed, replace the contactor. Even if you clean the contacts it will stick again.
If the contactor opens replace the wire and check the thermostat to see if it is operating correctly.

Jun 19, 2009 | Weather King 12AJA4801AH Air Conditioner

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WIREING IN NEW IEC CONTACTOR AND THERMAL OVERLOAD


I CAN PROBABLY DRAW YOU A DIAGRAM BUT SEE IF YOU CAN UNDERSTAND THIS FIRST. ASSUMING YOUR STARTER COIL REQUIRES THE SAME VOLTAGE OF YOUR COMPRESSOR. 230V MOTOR = 230V COIL ON STARTER. YOU HAVE 2 OR 3 HOT WIRES ATTACHING TO THE TOP OF THE STARTER ( 1 PHASE OR 3 PHASE). TAKE A JUMPER WIRE INSERTED UNDER THE SAME LUG AS 1 HOT LEG AND GO STAIGHT TO 1 SIDE OF THE COIL. THEN TAKE ANOTHER JUMPER WIRE FROM ANOTHER HOT LUG - PASS THRU THE TRIP PACK AT THE BOTTOM OF THE STARTER ( IN AND OUT) THEN GO TO PRESSURE SWITCH. TAKE THE OTHER PRESSURE SWITCH WIRE TO THE LOW OIL SWITCH. TAKE THE OTHER LOW OIL WIRE TO THE OTHER SIDE OF THE STARTER COIL. THEREFORE YOU WILL HAVE ONE SIDE OF THE COIL HOT ALL THE TIME AND WAITING FOR THE OTHER SIDE TO GET HOT. AS LONG THE OTHER LONGER CIRCUIT IS A COMPLETE CIRCUIT IT WILL WORK - IN A SERIES THE TRIP PACK SAYS OK, THEN THE PRESSURE SWITCH SAYS OK, THEN THE LOW OIL SWITCH SAYS OK AND THEN VOLTAGE GOES TO COIL AND PULLS THE STARTER IN. IF THIS IS TOO CONFUSING SEND ME AN EMAIL AND HOPEFULLY A PIC OF YOUR NEW STARTER TO JBRIDGERS@CA-EQUIP.COM AND I'LL TRY TO HELP YOU FURTHER. HOPE THIS HELPS.

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