Diver said prop has pink hue

[Comodave]

On their website there is a 5 page data sheet. It says that there is a fan that will come on if the isolator fails. And if the fan is on then immediately get it fixed/replaced.

 

[cardude01]

On their website there is a 5 page data sheet. It says that there is a fan that will come on if the isolator fails. And if the fan is on then immediately get it fixed/replaced.

Oh yeah I remember reading about that. I will listen for the fan.
Thanks!

 

[Comodave]

You can stay awake nights listening for the fan…. Kinda wierd way to tell you it isn’t working.

 

[cardude01]

You can stay awake nights listening for the fan…. Kinda wierd way to tell you it isn’t working.

I agree. Very weird. I can’t really hear all that well plus it’s buried behind my AC and DC panels so I doubt I’d hear it.

I figure I’ll just do the shore power plug in/plug out test with the silver cell every time I’m at the boat to make sure there isn’t a problem with the isolator.

I was able to use the silver cell to test and the anodes and the bonding system. Everything seems to have enough protection, although my rudder post was a little lower than all the other things I tested. I connected an aluminum “grouper” anode to that rudder post bonding wire and that brought it back up,so I guess I have a problem somewhere there.

I need to switch my zinc anodes to aluminum. I’m afraid they may already have some slime covering them up and rendering them less effective.

 

[Comodave]

Clean the connection to the rudder post, maybe replace the connector. It may just be dirty or loose.

 

[cardude01]

Will do. Thanks.

 

[Comodave]

Hopefully you can get to the rudder post on your boat, not so much on my boat…

 

[C lectric]

I'm going to mention that if the mounting areas on the so called protected parts and the zincs [anodes] are not clean then the anodes cannot work. Sand both mounting areas on the anode itself and the part to be protected.

 

[cardude01]

Thanks!

I was able to test the shaft zinc using my silver cell thing and multimeter and I think the shaft zinc is working. But maybe the prop has bad contact on the shaft?

 

[Old Sea Dog]

So your new galvanic isolator, when not working, will turn on a fan. Does that mean that the unit is heating up and the fan coming on is to disperse heat?

Sent from my SM-G715U1 using Trawler Forum mobile app

 

[cardude01]

So your new galvanic isolator, when not working, will turn on a fan. Does that mean that the unit is heating up and the fan coming on is to disperse heat?

Sent from my SM-G715U1 using Trawler Forum mobile app

It appears so.

The galvanic isolator can be tested with a multimeter using the diode mode, but that requires accessing and disconnecting the wires to the isolator, which in my case is a PITA.

I also saw this method of testing an isolator which looks much easier, using a silver chloride reference cell. Does anyone know if this is a legit way to test an isolator?

https://youtu.be/28hGQ74V5Gw

 

[C lectric]

Thanks!

I was able to test the shaft zinc using my silver cell thing and multimeter and I think the shaft zinc is working. But maybe the prop has bad contact on the shaft?

Maybe that is the case. I always sand or wire brush, SS, to clean both the zinc contact area and the metal to be protected contact area.

I forgot to further explain this. Then I test each with my DMM and if it shows any more than about 0.003 ohm it gets pulled and redone, the cleaning that is.

 

[cardude01]

[emoji106]

Thanks for the helpful tips.