rcubed3r Posted February 28, 2013 Report Posted February 28, 2013 My 2 speed pump on my Caldera C45 sometimes will not start in slow speed (it'll hum only), thus kicking out the controls and stopping all the cycles on the tub. I have tested the capacitor and it is fine. The exact motor/pump for the spa is $450+ http://www.spaandpoolstore.com/73023.html Is there any reason why this one won't work? http://www.amazon.com/Waterway-Speed-230V-Pump-3421221-1A/dp/B009CI43LI/ref=sr_1_1?ie=UTF8&qid=1362092546&sr=8-1&keywords=3421221-1A#productDetails I am looking for a reasonable cost replacement. I don;t mind going ahead and putting a new pump on the spa, It is about 6 years old. Any other ideas, options, or assistance is appreciated! Ron Quote
Apollo217 Posted March 1, 2013 Report Posted March 1, 2013 No it won't the amps don't match up. The one from amazon is 8.5 amps on high speed while the correct one is 11.5. Try a waterway executive 48 in a 3 hp. The amps should be real close Quote
Spa_Guru Posted March 2, 2013 Report Posted March 2, 2013 True pump BHP or brake horsepower can be determined by the amps the motor draws. Amps X Volts X 0.0013410220 = Brake Horsepower. Therefore.... 11.5 X 240 x .001341 = 3.7 BHP and 8.5 amps comes to 2.73BHP BHP = The energy a pump produces briefly at stall. This number is about twice what continuous HP is. Knowing this formula saves you from the huge amount of BS advertised in spa horsepower. Quote
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