Can I reverse rotation

[OldKiwi]

First thank you for adding me.
I have a 230v single ph 5hp leeson motor I need to reverse (if possible).
I have no diagram and may not be able to as there is only 3 wires in the terminal box. It has both start & run caps. Can wires on the caps be swapped to change directions.

 

[Tony Stewart]

Yes in theory it's possible, but in practice its difficult for me to give advice on all black wires without knowing how to reconstruct the schematic without numbering all the wires and making R,C measurements between each pin.

 

[OldKiwi]

Thankyou for replying, the motor as is runs great just needs to be the opposite direction. Ive included a phot of each, start cap & the run cap along with the wire numbers connected to each post (pin). I hope this helps.

 

[rjenkinsgb]

Does the motor have a nameplate with a type number? If so, a photo of that plate may help?

 

[rjenkinsgb]

Generally, to reverse motors similar to that, you need to swap over the two wire that feed the start winding. Without knowing what wires are which on yours, it's guesswork.

This is an example for a roughly similar style Leeson motor using both start and run caps; to reverse this you swap two push-on? terminals in the connection box, by the look of it.

 

[MaxHeadRoom78]

If you can identify the Run winding, usually connected directly across the AC power, They just need reversing WRT the rest, if possible.

 

[ahsrabrifat]

Can wires on the caps be swapped to change directions.

No. Reversal requires swapping the start winding connections, and if those are not accessible externally, you may not be able to reverse the motor without opening it and modifying the wiring.

 

[OldKiwi]

Does the motor have a nameplate with a type number? If so, a photo of that plate may help?

Yes, here's a photo. Ive been in touch Leeson, neither the cat # or model # came up in their database.

 

[OldKiwi]

No. Reversal requires swapping the start winding connections, and if those are not accessible externally, you may not be able to reverse the motor without opening it and modifying the wiring.

Maybe that's what I need to do, reopen the motor. I am up for anything that will make this run the opposite direction. Ill post photos of it apart.

 

[MaxHeadRoom78]

error

 

[rjenkinsgb]

Unfortunately the plate does not help as much as it could; no diagram references.

Photo of the junction box?

 

[Les Jones]

A photograph of the end of the stator where the wires come out of the winding may also help as this is probably where one end of the main winding is connected to one end of the auxiliary winding.
It MAY be posible to just take the rotor out and the assemble the motor with the shaft coming out the other end to avoid bringing out wires to the ends of both windings. This will only work if the rotor is still aligned with the stator with the shaft comming out of the other end of the motor. This suggestion is no use if you need to be able to change the rotation direction with a switch.
Les.

 

[OldKiwi]

A photograph of the end of the stator where the wires come out of the winding may also help as this is probably where one end of the main winding is connected to one end of the auxiliary winding.
It MAY be posible to just take the rotor out and the assemble the motor with the shaft coming out the other end to avoid bringing out wires to the ends of both windings. This will only work if the rotor is still aligned with the stator with the shaft comming out of the other end of the motor. This suggestion is no use if you need to be able to change the rotation direction with a switch.
Les.

Les and you all, thank you for your valuable time & information.
Hopefully I have covered all the bases with these photos and readings, I love a challenge.

 

[rjenkinsgb]

It looks like only three wires from the stator?
T1, T+ (T4??) and T5.

T1 - T4 appears to be the run winding, and T1 - T5 the start, with a junction within the stator insulation.

If that is the case, the motor cannot be reversed by changing the terminals around, unfortunately.

 

[OldKiwi]

ItL looks like only three wires from the stator?
T1, T+ (T4??) and T5.

T1 - T4 appears to be the run winding, and T1 - T5 the start, with a junction within the stator insulation.

If that is the case, the motor is non-reversable

A photograph of the end of the stator where the wires come out of the winding may also help as this is probably where one end of the main winding is connected to one end of the auxiliary winding.
It MAY be posible to just take the rotor out and the assemble the motor with the shaft coming out the other end to avoid bringing out wires to the ends of both windings. This will only work if the rotor is still aligned with the stator with the shaft comming out of the other end of the motor. This suggestion is no use if you need to be able to change the rotation direction with a switch.
Les.

Les Jones, i took some quick measurements, reversing the stator looked like it just may work.it did. The motor is running just fine.i was getting ready to make a new shaft but this was a whole lot better and faster. Thank you for the suggestion.