RC, If its a 1/3 hp model 0523 it is one of the older (and perhaps better) than todays 1/4 HP replacement especially if it has a GE motor.The older GE models seem to be bullet proof. Clean out the felt internal filters every few months and keep an eye on the end cap Orings especially on the exhaust side as it will wear out twice as fast as the intake side.If its a Sweetwater pump made by Gast it may not have internal filters or end caps. If you use the factory intake filter (orange tube style)just use light compressed air or wash it off as the color fades and collects dust etc. Should last a few seasons.10 psi is the rating on it and should have about 4.2 cfm open flow.close off the exhaust and make sure you can maintain 10 psi and if yes the vanes are AOK.Look at the ser number and the first 4 numbers will be the month and year built.Hope this helps.
