Worn out my channel 3 outlet

roblox84
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Worn out my channel 3 outlet

Postby roblox84 » Sun Oct 15, 2017 8:06 pm

I had my heater hooked up to channel 3 on my pc4 due to the fact I was told this channel is resilient to many on/off cycles for years to come. Unfortunately after only maybe 7+ years the channel has worn out and will not turn any device on or off. Is there any way to fix it?

For this reason I have my ATO set up on the channel 1 mechanical relay because I don't trust the electrical relays on 2 and 3 so I'm really hoping channel 1 doesn't wear out as well from the constant on/off and not shut off my ato one day.

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n2585722
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Re: Worn out my channel 3 outlet

Postby n2585722 » Mon Oct 16, 2017 5:01 am

What wattage is your heater? I am not sure that a mechanical relay will last that long turning on and off multiple times a day. I have had some of my PC4'S since 2008. They are all still working. I have 6 of them.
thanks,
Danny

roblox84
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Re: Worn out my channel 3 outlet

Postby roblox84 » Mon Oct 16, 2017 8:11 am

My heater I think is 200 watts. The thing is I would switch the ATO to channels 2 but that is taken up by low wattage moonlight that didn't work correctly on the mechanical relay channels. How long do you think those mechanical relay would last, months or weeks?

roblox84
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Re: Worn out my channel 3 outlet

Postby roblox84 » Mon Oct 16, 2017 9:05 am

I forgot to add that the other issue is that I'm using the pc4 to control an aqualifter pump which draws too little current to work on channels 2 and 3. If the relay on channel 1 won't last long as you say then I'm not sure what to do, maybe I'll have to go with a different ato solution like the tunze osmolator instead of using my reefkeeper for it.

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n2585722
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Re: Worn out my channel 3 outlet

Postby n2585722 » Mon Oct 16, 2017 4:02 pm

You may be able to use it on CH2 or CH3 if you add a surge protector between the pump and the PC4. Make sure it has a 330 volt clamping voltage. Also illuminated power strip liberators have been known to help. Make sure and test it. Also limit the amount of DI it has to replenish with until you are certain it is working correctly. The issue with the Aqualifter is the back EMF pulse that it generates when it looses power. The pulse turns the triac back on. The outlet is turning on and off so fast it appears to be on. If you can kill that pulse the triac will stay off. The pulse is several hundred volts. The PB4 has built in circuits to prevent this.
thanks,
Danny

danmgray
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Re: Worn out my channel 3 outlet

Postby danmgray » Fri Oct 20, 2017 12:53 pm

Relays do wear out over time; it happens quite often at work on our industrial machines. If I were in your shoes, I would probably take a stab at fixing it myself. Depends if you are comfortable working on electronics and if you can do it safely.


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