Regal 250/300 INT troubleshooting

[Kooma]

Good morning!

Ive found an either regal 250int or 300int that a friend is going to grab for me. Its listed as a non-runner with a pump issue. For those that have had problems with these before, what are some common failure modes to look out for?

 

[nautical_nathaniel]

Sometimes the pumps just die. That would probably be the most common failure point on any skimmer besides breaking the cup when you drop it during maintenance time

 

[Servos]

The pump itself for either model is a Reef Octopus VarioS-6S with pinwheel impeller. With any DC pump you can check the controller and power supply independent of the pump itself - though this would require having another VarioS-6S setup. If it doesn't fire up after a good cleaning, I'd plan on purchasing a replacement but checking to see what is salvageable.
The power supply is 36V which is a bit of an oddball voltage compared to more common 12V and 24V adapters used on other pumps, FYI.