Bilge Pump

[Flyfisher70]

I have a Rule bilge pump 360gph, which I was running on a 6 Volt 7ah battery with a timer switch set, inline fuse and had it set at cycles of 15 seconds on/off. Well the bilge pump already took a dump after only using it on two outing.

Is this normal for the pump to stop working so soon after only two outings? Should I get another type off pump or do you guys think I just got a bad pump from the get go?

I did all the trouble shooting I could do, all wires and connections are corrosion free. I even cut the wire and tried the pump with just the battery and the pump is completely dead.

Thanks for any help guys.