hammy Posted July 24, 2015 Report Share Posted July 24, 2015 This technically isn't a spa quetion, but actually a spa motor question. My son has built a rope tow in our backyard for pulling himself up to the top of a slope he's used for a skiing terain park. The rope tow currently uses a 5 HP gasoline snow blower engine that I want to replace with an electric motor. I have a Coast Spas Monster Flow 7HP 230V two speed pump motor from an old spa that I'd like to use. I've removed the pump and blower mechanisms from either end of the motor and attached a chain gear. We'll have to sort out gearing based on the pump speed, but my question is about wiring. I have a 230V outlet on the exterior of our house that powers a submersible pump in the lake that is part of our irrigation system. Since we don't use the irrigation ssytem in the winter, my plan is to wire this to the spa motor. The outlet is wired with a two wire (two hot plus ground) 12 gauge wire back to a 20AMP 230V GFI breaker versus the three wire (two hot, plus common, plus ground) typically used for ovens and dryers. The spa pump motor has four terminals (ground, common, low speed, high speed). My plan is use a double pole double throw switch and a single pole double throw switch wired in series to control the motor where the DPDT switch turns the motor on and off and the SPDT controls the speed. From the outlet to the pump I plan to connect the ground to the ground (obviously) and swtich both hot leads with the DPDT switch. One switched terminal of the DPDT switch will be wired to the common of the pump. The other switched terminal will be wired to the common of the the SPDT switch. I'll then wire one switched output of the SPDT the low speed terminal on the pump and the other switch output of the SPDT switch to the high speed connection. A diagram would obviously make this more clear, but hopefully this description suffices. I have experience with everything here except the spa pump, So my question is (ignoring the switches for a moment): is it correct to wire the pump by connecting one of the hot leads from the two wire 230V outlet to the common terminal on the pump and the other hot leads to either the low or high speed terminals on the pump (but obviously not both at the same time), or is thier something weird about spa motors that I should watch out for? Quote Link to comment Share on other sites More sharing options...
Dr. Spa Posted July 24, 2015 Report Share Posted July 24, 2015 Sounds like you got it. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.