240v electric motor reverse ?

[foxhall351]

hello everyone
i am a newbie to your glorious forum.
i need some help please !

i have a 240v 5hp 2800rpm electric motor .
but i need to know if there is any way i can make it work in reverse. it is a coil or capacitor start motor if that is any help. also i dont need the motor to work forwards and in reverse. just reverse.
regards to all

foxhall351

 

[rtbcomp]

Welcome to the forum.

There may be a wiring diagram behind the terminal cover.

Failing that, can you describe the wires coming from the body of the motor to the terminals?

 

[ford34/2]

reversing

In the good old days the information was on the inside of the electrics connection cover, there were 4 lead connections - I think A1,A2,Z1,Z2, two of them were connected together, possibly on two threaded poles and a brass nut and washer on them, maybe A1 and Z1, the other terminal A2 and Z2, I think I used to swap them over, so you had A1 with Z2 and A2 with Z1
I am sure some whizz with info will be along soon
Stan

 

[foxhall351]

thank you so far for your replys people.
i will have a look in the motor cover tomorrow.

 

[awemawson]

usually a single phase motor has two windings, a start winding and a run winding. They are connected in parallel to stsrt, then by some means the start winding is disconnected. By reversing the phase (ie swapping it's begining for it's end and vice versa) of one winding it will usually start in the opposite direction. Frequently the start winding will be in series with a capacitor.

 

[mike 109444]

Depending on how the motor is made I have before now turned the rotor (shaft through the middle!) round ie take both ends off, swap around and reassemble with the shaft pointing out the other end. If that makes sense and is possible on your motor

 

[gordon stephenson]

I now remember asking this same question with regard to the hog roaster i built, but can't remember the answer,, Search for hog roaster on this forum and you will find the answer in one of the posts.

 

[foxhall351]

please help

hello again people
i have now had a look in the junction box on the motor and i have 4 wires coming from the motor body.
2 red wires and 2 black wires

1 red joins a blue wire to the capacitor
another red joins 1 of the black wires then the 2 of them join the live from the switch.

the remaining black joins a brown wire from the capacitor then they both connect to the neutral.
sorry about all this . i am confused.

 

[awemawson]

So it would appear that the start winding is the red pair in series with the capacitor, and the black pair are the run winding. A photo would help to be certain, but it's a fair bet if you swap the pair of black wires for each other it will run reverse.

 

[foxhall351]

picture

i do have a pic but i am not sure how to put it on here also its not very good .

 

[the snooper]

where you click post reply, click go advanced. then click add photographs choose your pics click upload wait for the upload click ok and submit post

 

[foxhall351]

photos i think

i think i have managed to post pictures. blimey people are helpful on this forum. thanks snooper