Replacing Pump

[Poconos]

Hi JV,
First comment is why change something that has been working. By that I mean change the specs. I agree with Carl to stay with a 2-speed. On the overheating issue I wouldn't be surprised if it's something as simple as blocked air passages. The fact it runs for an hour before shutting down says it probably isn't something catastrophic. Usually the air flow is from the front vents near the pump chamber to the rear vents. Have a good blast of air coming out there? If not I'd take off the back cover and get in there with high pressure air to try and blow out the passages. Some bugs like to build mud homes in things like electrical outlets and could be they built in your motor. If it is mud housing it may be more difficult to clean out. Check the airflow first and we'll go from there.
Al

[CarlD]

Hey! Al may just save you several hundred bucks!

[ttgivencej]

Thanks for the suggestions. The pump runs very quiet and smooth, so I don't think it is mechanical. It is probably lack of air circulation. I don't feel any air coming out the bottom back fins, probably something blocking the air flow. Next weekend I'll take it apart to try to clear it out.

Thanks.
JV