Mini Lathe Electrikery.......

[Bluechip]

John

yes live working was the norm then , trice for degreasing yep , dis boards with no cover on the live bit and at 550 vac 

we used to clean the DC 220 vdc bus bars live bare hands  , open front slate switch panels and open frame rotary converters


later I spent the latter 30 years working for a bank looking after the engineering for the computer centre at Kegworth , retrained in diesel fitting , air control systems ,BAS and later BAS system programming

Now do nowt only play in WS  as I need wheels to get

David D

going to Dave BC's  by ek thou is gerrin a bit close , I will hey to get a thicker tin hat 


Stuart

Tin Hats are no 'kin good ... if I were you, I'd get some Blast Doors fitted ... 

BTW I went to Kegworth from 1987 - 1995 .. I don't recognise your name though.

Maybe you weren't in the Oddies Luncheon Club ??

Dave BC

[lordedmond]

Small world

I was In the engineering dept that door on the left when you when in the staff entrance


we were shift 'C"  ran parallel with "Dork"

my fitter spent most of his spare time perched on the end of the bar in the oddies ( Ron ) doing crosswords with his cash on the bar

you would remember the New Inn and the Cap and Stocking  then


Stuart Hardy

[Bluechip]

Stuart

Know the room. Been in there for odd reasons.

My hang out was on the Mezzanine floor, with the ... er ... whatever they did/or were ... 

Never went in the other pubs, seem to remember a fairly edible steak pie/chips in the Oddies.

I worked for Masstor Systems Inc. Our kit was where you went in the main systems hall.

3 pairs of somewhat anonymous white boxes, with vertical windows where you could watch the accessor nipping up and down.
( if you were desparate for something to do )

I would probably recognise faces, can't remember names too well.

For some reason I can remember Noel, one of the sleuths on the gate .. dunno why.

Dave BC

 

[lordedmond]

I Think I have you but not sure

they were the octagonal boxes with the carts stored around the walls  pretty nifty bit of kit


faces well not much of mine can be seen , full set and glasses


yes Noel and the crew at the gate house Len and John as well

Stuart

[Bluechip]

I Think I have you but not sure

they were the octagonal boxes with the carts stored around the walls  pretty nifty bit of kit


faces well not much of mine can be seen , full set and glasses


yes Noel and the crew at the gate house Len and John as well

Stuart

Nope, wrong ones. They were the StorageTek Silos. With a telly on the things.

Mine ran parallel to the 'main drag'. Come through the doors, walk straight on, on your immediate left.

Table near them with the printers etc. on.

Going a bit    aren't we ??

Dave BC

[Stilldrillin]

Off topic?

Are we?

What was the topic? 

What are you all talking about?

I'd join in..... If I understood....... 



 

David D

[Bluechip]

What are you all talking about?

David D

Ooops, we appear to have struck a snag ...

We were rather hoping you might know     

That's it then ... anybody got a 'Plan B' ???

Dave BC

[DaveH]

Plan B

What the **** was plan A

DaveH

[Bluechip]

Dave

Errrr ... not sure .. I think we're going round in circles ... 

Maybe Plan A was really Plan Z from last time around  ??

Time for my afternoon nap

Dave BC

[Stilldrillin]

Plan B? 

Well..... Mebbe! 

Something in the transmission has made a strange noise, for a while now........

Re assembling the motor, I noticed a clean/ polished line around the inside of the housing, in line with the plastic cooling fan.
Closer inspection showed a blade cracked 3/4 the way through, able to swing outward under centrifugal force. Also a small corner missing from another blade......   

Stuart's Amadeal link took me to the correct motor....... And the board to match......

If Dave can fix the old board, I will have a spare. Which, of course will never be needed...... 

David D

[John Swift]

 Hi Dave D and Dave BC ,

just incase you didn't look at all of the cnczone link

I've added the circuit I traced  for of the small pcb with the blue relay

hope the tests go well tomorrow     


 John

[Stilldrillin]

John.
Thank you!

I did have a look..... Then me brain started overloading again........ 

The motor and board are on their way from Amadeal. I will take advice before installing em.

I can repair the blown copper trace with a soldered wire.

I'm meeting Dave BC at a local show, next weekend. He can have the board to play with then....... 


At the moment, I'm hopeful I can cope with a simple unplug/ replug....... Mebbe! 

David D

[lordedmond]

David



just swap the wires one at a time and you will be fine


Stuart


John Swift
 on the first pic shown by David all I see is three cap's a R and an inductor the big yell thing is marked  c3 with the blue ones c1 ,c2  I do not see any relays on that particular board


Stuart

[Stilldrillin]

John Swift
 on the first pic shown by David all I see is three cap's a R and an inductor the big yell thing is marked  c3 with the blue ones c1 ,c2  I do not see any relays on that particular board

Stuart

Ohhh....... Stuart!!

Pleese........ Don't start all that, all over again!     







             

     David D........               
                 

[John Swift]

Hi Dave ,

add a lable/ marker  to one of the red  wires  that connect to the control pcb

then take a photo or make a note

changing the wires over one by one is a very good idea

but you need to have a plan B if some wires come off by accident ( been their   )


PS  just spotted the cable ties   your photo on page 3 gives all the detail you need

PPS    using your photo just added your wire colours to a diagram of the control

         not sure of order of mains wires but ties help to get them right



Hi Stuart ,

the relay board is in the control box with the speed control PCB

the relay circuit could be use full while fault finding

since it is an interlock for the power and switches the 27 ohm braking resistor

the damaged filter PCB is in a plastic box hidden by the motor cover  at the rear  of the machine

 John

[Stilldrillin]

I've just soldered in, a length of wire.

Not a pretty site, but neither am I........ 




I've now got continuity down all 3 strips, (including the blob, top right). But nowt across. 

David D

[John Swift]

 Hi Dave  ,

I'd clean as much of the black deposit of between the live and earth tracks as possible

sooner or later the current will track across

I can't see a connection between the small capacitor and the live track

    John

[Stilldrillin]

Point take over black deposit, John.

Small capacitor? There is continuity to my wire, from the top right solder blob, as the copper is sound between it and resistor blob.
I thought also routing through capacitor would be belt & braces.......

David D

[Stilldrillin]

Still here......

I mostly use brake/ clutch cleaner spray. But, it wouldn't touch the black deposit! Thinners did the job!  

I've taped the loose mica cover to the pcb, and assembled with new grommets into the plastic box housing, and machine cover.
Got continuity from each plug pin (l, n, e) to the appropriate component in the control box.... With no crossover.

Just need a parcel to arrive from Amadeal now. Sigh......  

David D

P.S.

When it arrives.....

Am I safe to fit motor and board...... And just switch on????

[lordedmond]

Just let us know when you switch on  I will call up Ratcliffe and warn them to expect a current surge   



Take some pic of the wiring as has been sated and change only one at once



Stuart

[modeldozer]

Hi

If I may chip in, these boards need to be adjusted after instalation. If it is a KB one the manuals are avaleble and explain the procedures.

Abraham

[Stilldrillin]

Thanks Abraham. 

It is a KB....... Hmmmm...... 

I'd have far more confidence, stripping & rebuilding an engine..... Something like a V12 Jaguar....... 

David D

[75Plus]

Thanks Abraham. 

It is a KB....... Hmmmm...... 

I'd have far more confidence, stripping & rebuilding an engine..... Something like a V12 Jaguar....... 

David D

The KB boards need adjustment ONLY if you are dissatisfied with the factory settings. If adjustment is required the manual has clear instructions, including pictorials, to follow. The main consideration is installing the proper HP resistor for the motor being controlled.

Joe

[Stilldrillin]

Thanks Joe! 

They are being supplied as a "pair", so should match without fiddlin'...... Mebbe! 

Still no delivery.  So, I rang a short while ago, and talked to the Boss, Hugh.
Both of his staff are away...... Coping on his own! Parcel's ready! Arranged delivery for Thurs morning......

Possible power dip, in the North East Midlands, Thurs aft...... 

David D

[Stilldrillin]

Well..... Ok......

The parcel arrived a bit late. Managed only to wire and locate motor, and swap boards, before family matters got in the way......

I now have 2 boards, both with orange stickers saying. Plug in horsepower resistor (R21) must be installed for this product to operate.

If that's an instruction to me, I've got a problem..... I can only see R20 and R22, and nothing unplugs.....  


Is this an instruction to the person who sets up the board, before it comes to me?  

Confused of Staveley.