Hydromate Power issues - Capacitor / Relay

Turning on the Softub after filling to just over the filters and the unit just buzzed.
Not unexpected to be fair as usually these tubs are sold on for a reason!


Getting in wasn't too tricky though and finding the capacitor at the back of the motor was fairly easy and it didn't look in great shape




MY capacitor was an oval one made in Mexico. Speaking to a Cambridge Rewinds it's an old design and I was unlikely to find one. They did however have a reasonably sized cylinder one to the same spec 20UF, 370VAC 50/60hz - For £12 I thought worth a try

I had to thread the old leads carefully through the grommet on the oval cap, but easy enough to do. The new capacitor has a clear cap with a smaller hole, so i removed the grommet from the oval cap as well. I measured the hole in the oval cap and drilled the new round caps' hole to the same size. Everything looks as though it will fit and work fine. 

Alas in early testing, before the new capacitor, i ran the motor with the control board housing on it's side. There was a bang and a fuse died. On inspecting the control board i found a power relay ( Zettler Az2700-2A-220A 30A 277VAC) screwed to the plate with a burnt smell and a bit of flash residue.




Looking at the spade connectors they were very close to the edge of the control board enclosure. I may add some heat shrink to the ones closest to the shell to stop this happening again


These are pretty specialised and I managed to source one from Pool & Spa  for £35 delivered. Which only took a day or so to get to me.
The replacement appears to be an OMRON G7L-2A-TUB-CB.
There are some on Ebay too, many from China, though be careful if going this route as you want the 240V version and 12/24/48/120 appear more common!

Turns out even the PROs supplied the wrong part. It was 120v - It DOES work though I'm not sure about it longer term as the coil voltage is too low, but it did allow me to get things up and running for the weekend - I've got a 240v on on order and am kicking the Pros, though I think Softub US shipped the wrong part, so ALWAYS double check stuff! 





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