Member postings for Ian Patrick 2

Hey all, just a update!

I tried the new switch, removed the extra wire, hoping it was an internal connection on this one and boom, worked!

So must of been a worn out NVR

Thankyou for all of the help! Now I can start ordering some tooling for it!

Atvb

Ian

Hi all,

New NVR arrived today, however there is only 4 possible connections? Would the 5th connection (To create the magnet) be internal?

Thankyou all for far for the help!

Atvb

Ian

Would the Gear cover inside have a limit switch? It has a low and high gear setting. I will see if the new NVR unit solves the issue tomorrow but if not i shall have a look inside for another limit switch, i hadn't thought of that!

Atvb

Ian

Thankyou for the advice,

The guard switch is still in place, with the switch pressed down the mill doesn't light up or move at all, only once it is depressed does it work.

I have ordered a new NVR which should hopefully arrive tomorrow. I have (hopefully) attached some photos of the current NVR, i took the unit apart to have a look and noticed there is some scorch marks between the contacts, one in particular looks really bad, could this possibly be the fault?

All the best

Ian

Hello all first post on this forum hoping someone can help.

I recently purchased a used hobby milling machine off of ebay and am having some issues getting it to function correctly.

The milling machine in question is a Chester Champion 16vs.

When i went to pick it up it had the main wire cut. Once i got it home I opened up the control box to replace the wire and most (almost all) of the wires were disconnected from the board. Over the past couple of weeks i have been working on it in the evenings after work, i removed all the wires and started again, reassembling it but i have got to a point where i am stumped.

I have re wired it according to the wiring drawings available for that model. When powered up the speed display is working & the motor starts, but as soon as i let go of the ON button, the machine switches off again.

Does anyone have any ideas what the problem could be? Perhaps i have missed something. I have even gone as far as stripping down the ON OFF switch to check inside.

The DC motor itself looks barely used, i decided to replace the brushes anyway and gave the commutator a clean to remove any previous carbon.

All the wiring looks ok, the tachometer is working, the potentiometer seems to be working (doesnt switch on unless the dial is turned down to the minimum) the interlock guard is working and the E stop is working too.

I am just stumped at what is causing it to only function when the ON button is held down ??

Atvb

Ian