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Anonymous Poster

changing the rotation

02/15/2009 10:05 AM

I have a 1ph, 2 hp 110/220 volt mod#HD56MRB34D21 , stock # HD2HPM/03992 motor. Rotation is ccw. I need cw. Using the 220v wiring method the diagram tells me too: bolt stud

#1 has yello w/ black = line1

#3 has brown(smaller dia. wire)

#4 has red

#5 has white & a orange

#6 has yellow = line2

Is it not possible to change some of these around to change the rotation?

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#1

Re: changing the rotation

02/15/2009 10:10 AM

Forgot to mention. It has two capacitors on it.

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#2

Re: changing the rotation

02/15/2009 11:55 AM

Hi,

I assume you have a Two-Speed Capacitor-Start Motor with Two Capacitors. That is two running windings, two starting windings, with two capacitors. One capacitor is for high speed (2hp = 1.4914kW) and the other is for low speed (1hp = 0.7457kW).

It may not be reversible, unless the motor is a Two Voltage Reversible Capacitor Start Motor, with two additional leads which are brought out from the starting winding circuit, for external reversing.

Probably to reverse motor, the wiring configuration may have to be changed to that of the Two Voltage Reversible Capacitor Start Motor with one capacitor. Where two sections of the starting winding are internally connected in series with two leads brought out for power,one lead of the starting winding is internally connected to the mid-point of the two running winding, the other lead of the starting winding is brought out of the motor and connected to the running winding 1 for one direction of rotation. For reverse rotation, the lead of starting winding is changed to running winding 2. Where direction of current is changed in the starting winding. Only one capacitor is used.

Hope this will help. Look up Two Voltage Reversible Capacitor Start Motor.

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#3

Re: changing the rotation

02/15/2009 12:18 PM

guest; you may have a motor for a air compressor. usually you reverse # 5 & 8, or red & black, it sounds like a capacitor start & the other capacitor run. perry

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#6
In reply to #3

Re: changing the rotation

02/15/2009 4:24 PM

OK what I did was switch the red for the yellow w/ black. So now the red is connected to Line 2 . The rotation has CHANGED.BUT the motor will not get going. I let it run for about 10 seconds and it sounds like its stugling to pass first gear so to speak. Now what?

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#7
In reply to #6

Re: changing the rotation

02/15/2009 6:14 PM

Hi,

You have changed the two leads but have not interconnected the two running windings.

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#8
In reply to #7

Re: changing the rotation

02/15/2009 6:44 PM

Ron,

Sounds like I need to dismantle this motor to figure out which wires are coming from these windings. Sound right? But I can keep the one Line in on the yellow and the other on the red which is now on the #1 pole cause the yellow/blk is nor ont he #4 pole.

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#10
In reply to #8

Re: changing the rotation

02/15/2009 7:17 PM

Cabinetr,

Your approach sounds right, identify the motor cables, and do all the necessary connection at the motor terminal, the running windings dose not have to be connected internally. If you could identify them and connect them at the motor terminal, that should do. Possibly identify respective running windings by measure of winding resistance, high ohms - lower hp, low ohms - high hp winding.

Remember to implement electrical safety before you test.

Let us know if all works out.

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#11
In reply to #8

Re: changing the rotation

02/16/2009 9:03 AM

You need to identify the two wires that go to the start winding, one will be in series with the start switch the other probably in series with the start capacitor [ note the start capacitor could also be in the other leg ] in any case when you have identified the two wires reverse the two connections this should reverse your rotation. Note start with all the wires in there original position as it sounds like you have made a wrong connection.

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#13
In reply to #11

Re: changing the rotation

02/16/2009 5:30 PM

Thank you ALL for the support and efforts.

Here is what I have. Start cap. ( cause it says"start")has two red wires. One to the winding. One to the #4 pole which has this flap and a contact on it which looks like the switch.

The other cap. which does not say "start" is blue and should be the run cap. has two blue wires. One to a winding. One to the #5 pole which is the other end of this switch (seperate but also has a contact on it) Now the #5 pole is where the orange and white wires are.

I will place the red and yellow/blk. wires back on their orig. poles.

Tell me if you will, Which color wires to move where. Are you guys telling me to disconnect wires @ their soldering points? Or can I just move these wires around @ the poles?

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#9
In reply to #6

Re: changing the rotation

02/15/2009 6:47 PM

Refer to diagram of Charsley99, You must have the runnig winding and starting winding configuration right.

Note the change in current flow as stated in my original post, as aresult change in rotation with active winding configuration.

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#4

Re: changing the rotation

02/15/2009 12:50 PM

This may help;

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#5
In reply to #4

Re: changing the rotation

02/15/2009 3:47 PM

Sorry this doesn't show start and run cap.

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#12

Re: changing the rotation

02/16/2009 5:01 PM

Hard to believe but try switching the rotor end for end. The end plates should be compatible. The feet bolts might change position, just slot the holes on the mounting plate. If not, return motor for one that runs the right way.

The wire connections are only to change the windings from 110V run to 220V run. The 220V will use a smaller wire to run the motor at full load. Singe phase motors are designed to turn one way only regardless of the external wire connections.

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#14
In reply to #12

Re: changing the rotation

02/16/2009 5:39 PM

When I switched the #4 red and put it on the #1 pole where a lead comes in w/ the yellow /blk wire , the roration did change. BUT the motor could not get going 100%. Do you see this as what you said. One direction only?

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