Can it be rewired to be 2 speed
Can it be rewired to be 2 speed
(OP)
I have a Hydro-Air HA 430 single phase 1hp motor and would like to change it to 2 speed can this be done?
Specs
Ip-X5 220/240v 50-hz AC-1
Amps 5.2 Watts 1000
H(max) 16 m3/h 23
Any advice appreciated.
Pegitt
Specs
Ip-X5 220/240v 50-hz AC-1
Amps 5.2 Watts 1000
H(max) 16 m3/h 23
Any advice appreciated.
Pegitt





RE: Can it be rewired to be 2 speed
Modifying your current 1ph motor for 2 speed operation is not very practical. There are some options however;
1). Change out your current motor to one designed for 2-speed operation and modify your existing controls
2). Install a gearbox.
3). Install a drive and replace your current motor with a 3-ph.
Since most all (if not all) 240V drives these days will except a 1-ph input and deliver a 3-ph output. I think I would opt for #3. That way you could "tinker" around and find whatever speeds you require.
There might be some other ways to go but, those are the three that come to mind right now.
Take it easy
Ed
RE: Can it be rewired to be 2 speed
May be a new winding could be re-designed to get two speeds, but it will be expensive and need a motor expert shop to calculate the new winding parameters properly.
RE: Can it be rewired to be 2 speed
cheers
Pegitt
RE: Can it be rewired to be 2 speed
If the motor is a perminate run capacitor motor you can switch in and or out a different value run capacitor.
RE: Can it be rewired to be 2 speed
Take a look at these options... (This is just an example)
http://ww
RE: Can it be rewired to be 2 speed
This link should work...notice the 2 speed models...
http://www
RE: Can it be rewired to be 2 speed
RE: Can it be rewired to be 2 speed
RE: Can it be rewired to be 2 speed
"Venditori de oleum-vipera non vigere excordis populi"
RE: Can it be rewired to be 2 speed
Find out what kind of motor it is. If it is a PSC (Permanent Split Capacitor) design, there are speed controllers that will work. If it is any type that has an external capacitor on it there is no way to reduce speed. You must either replace it with a 2 speed version as he showed, or reduce the speed externally as aolalde said. The catalog information does not indicate what type it is, and that box on top of it could be big enough to hold external capacitors. Open it up and take a look. If you don't know what a capacitpor looks like, look at the label for any designations that include the term "mf" (for microfarads). That would indicate it is a capacitor. if there is nothing but wires insidethere, it may be a PSC motor and you could put a VFD on it and use an external pot to change speed.
If all this sounds too complicated for you, live with it like it is.
"Venditori de oleum-vipera non vigere excordis populi"
RE: Can it be rewired to be 2 speed
The idea is that the big motor can run at normal full speed, and the small motor drive the load at reduced speed. When running at normal speed the small motor would be significantly overspeeded, but that might not be a serious issue. I suppose it depends on how far apart the two required speeds need to be.
I realise this is not a terribly brilliant idea, but it may still be practical and workable in some situations with a bit of care.
RE: Can it be rewired to be 2 speed
Another aspect of what I said about your existing controls is the issue of "flick a switch" as you put it. That is a tricky prospect in spa controls. There needs to be carefull attention paid to human safety when dealing with switches and being wet.
"Venditori de oleum-vipera non vigere excordis populi"