The preamble

I know NOTHING about elecrics..Sad i know but some people grasp it, other dont, i am one of them, so anything that tells me that this winding is secondary and voltd,amps watts go right over my head pleae do not get techbical it will not help Sorry to be blunt but that is the way my brain is. It jsut cannot get anything electrical in it… even computers i have trouble with, ( but onlt the theory side, using them is ok ,but if it doesn;t work, the i get someone in)

Thats it

Now a few weeks ago my Crompton motor has been making 'noises'

disconnected the wires from the motor from the Dewhurst rotary switch and noted what went where so far so good this, i can deal with

Took it to the local motor repair shop.. new bearings reqd Fixed and brought home yesterday And this is where the problems start. The gremlins that live in the shed have taken the diagram of what went where!!

Not to worry there is a diagram on P19 Fig 25 of the set up to contact it all back. AAARGH the colours are all wrong

jumping forward a bit the terminals on the dewhurst are ion the LH side T1-4 and on the right T5-8 there is an earth connector above T5

Still with me?

The powerto the switch uses T1 Brown and T3 Blue which corresponds to the Fig 25 diagram

Now this is where my brain goes into neutral

Fig 25 shows that connections of the motor , wire colour and termination on the switch as,

A1 black T5

A2 black T7

Z1 red T2

Z2 red T6

However my motor set up has the following

Terminal A brown

A2 brown

T blue

Z blue

Which knackers me what colour is now what?

To make it really confusing is when i did a continuity test i gor the following results ( i call the blue ones B1 and 2 and the Brown as B1 and 2

Thr battery used showed 1.4v ( see i do know a bit!!)

B1 to Z 1.67??????

B1 to T 1.4

B2 to Z 1.4

B2 to T 1.4

Br1 to A 1.4

Br1 to A2 1.4

Br2 to A 1.4

Br2 to A2 1.4

I was hoping to get a 0 on a couple of these readings!!

Now any ideas on what wire i put on what terminal

IIRC the browns went T2 and 6. which equates to the red in fig 25

Blues must go on T5 and 7

If i just connect them up what could go wrong and if the motor runs backwards in the forward position. wI suppose i would have to reverse 2 wires but what ones

In times like this i am glad i turned down that job in Bomb disposal!!!

Any thoughts and explained so a three year old can understand?

Sorry for the length of this Hopefully all the info you need is there

Malc

If your terminals on your Crompton are like mine Z, AZ, A T in the sequence Blue, Brown, brown, Blue that would be great

Ron

I have forearms like Popeye cranking the thing around by hand, and no monkey to dance to the music!!