[Phil P]

Hi

When I looked up the specifications on the pump in our Montana the normal draw was 50 amps Locked rotor was 80 amps. Locked rotor is a failed condition.

What I found in the specs was something none of us are doing. The pump and motor has a duty cycle limitation.

15 minuets cool down period between pump operations.

I checked further and the operations of the pump against the pressure relief valve doesn’t bring the motor draw up much at all but the bypass arrangement in the pump will cause a hydraulic oil over heat very quickly. I would think this duty cycle is more for pump assembly cooling than just the motor cooling.

While I do advocate running the slides out until they reach their limit and you hear the pump noise change in order to make sure your slides are all the way out and the pressure relief valve is working I don’t recommend holding the switch any longer.

I do recommend the 15 minuet cooling period between operations.

Phil P

PS:

Definitions

Pump Assembly = pump and motor

Operation period = open or close all sides to pressure limit.