I have a new (old) blower!!!!!

[Semper Gumby]

I installed new heat and air in the house yesterday to replace a working but 25 year old system.  When they pulled out the old furnace/AC blower I took one look and saved it from the waist bin.  

I have always needed a blower for doing tuneups and this one is industrial!  One motor with two blowers - one on each end of the motor.

So I need to hook it up.  There are six wires two brown that are connected to a capacitor (not a problem) and a red, white, black and blue.

I think the white is ground and the other three are the phases.  How do I connect these to a switch to get house power to them and run the fan.  Can I get varible speed by energizing less than three phases?

Thanks in advance.  

[Bob_Roller]

You'll probably need 220v service, if you don't have an outlet for this, say for an electric clothes dryer, you may not be able to do this, unless you run a dedicated circuit from the circuit breaker box .

Check to see if there is a data plate on the electric motor, it should be on there .

[montmil]

An excellent refuse/reuse/recycle idea for the blower unit, but the 220V requirements will likely create more revamp problems than it's worth.

If memory serves, Harbor Freight sells a 110V blower that looks just like the ones used by NASCAR teams over at your local track. They do move a lot of air and are probably lighter and easier to store away.

Monte

[Darwin_R65]

color coding of wiring depends on where in the world you live.

check this web page for an explanation.
http://www.3phasepower.org/3phasewiring.htm

[Barry]

It does sound like a 3 phase motor which is not something you find in domestic properties in the UK.

If it is and you have a 3 phase supply it doesn't matter which way around the 3 phase wires are connected. All that will happen is that the motor will rotate in one direction or the other.  If it's the wrong direction just swap 2 of the phase wires and it will reverse the direction for you.

Just a thought though single phase motors have a capacitor to provide some phase shift during starting - 3 phase motors do not usually need one so I think what you have is a 3 phase motor being operated on a single phase supply. See this link for connections and how this works:

http://www.gwm4-3phase.com/uands/static1.htm

Can I get varible speed by energizing less than three phases?

Not normally the power output will be substantially lower and the motor will tend to overheat.