I know I posted it before, but here’s a video.
I have installed replacement relays 4 times. When I powered it on, it works find on counterclockwise. Reversed it, relays works and goes clockwise. Reversed it back to counterclockwise, relay stops working and stays stuck in clockwise. I installed the relay correctly with the temperature at 350° C, and it keeps acting like this after replacing the relays 4 times. I don’t know what I’m doing wrong, but any help would be appreciated if someone knows what’s causing the relay to act like this. I know it has to be caused by something else that makes the relay behave like this.
Video showing the relay problem: https://streamable.com/1ayiir
Hello @AdinPanthers,
The relay appears to be configured to reverse the motor.
There are a few possibilities:
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The relays are defective, counterfeit, or improperly specified. As I understand your history, the relays were purchased on eBay.
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The motor or associated components are destroying the relay. This could include a shorted windings such that the motor still turns but consumes excessive current. The large capacitor is also suspect.
I see that @PaulHutch is typing, I’m very curious to see his answer.
Sincerely,
APDahlen
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Since 4 replacements have failed, some other part(s) in the system must be bad and they are causing the relays to fail.
Given there was a dead MOV and triac, the original failure was almost certainly due to a power surge.
A powerful enough surge can partially damage nearly every component in a circuit to some extent.
Without a schematic diagram I can’t suggest what those bad parts might be or what voltages and waveforms in the circuit to check.
P.S. There may be value in measuring current. Unfortunately, that would be difficult to do in a triac controlled motor. The pulsed system is best measured with an oscilloscope.
Still, a handheld “amp-clamp” would detect relay damaging levels of current.
r/
APD
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