The 24 volt motor won't start on the Duo 60.  I'm a little suspicious of the cause since I was replacing the one-way bearings on the Cat Pump.  It worked up to that point, and then when the bearing problem was solved, would not start.

I posted photos of the motor and the start solenoid with a wiring diagram.  Referring to the diagram I tested it for voltage with the Dessalator switched to 24V, and the breaker on, and get 24.7 volts between A (bat neg on the source side of the solenoid)  and B (bat neg on the load side of the solenoid), and A and C (bat pos on the motor), but zero between B and C.  For the motor to run there has to be voltage between B and C.  Since I get 24 volts between A and B, it seems the solenoid is closed (contact is made) so the solenoid is good???  But when I switch off the Dessalator 24 volt selector switch, I get the exact same readings.

I have no experience with solenoids, so I will be the first to admit I don't know what I'm doing.  Does this make sense to anyone out there?  And does it tell you anything about the solenoid?

I've already cleaned up all the contact points, which looked ok to start with.

Duane
Wanderer, SM#477