Colchester SaftiLok problem

This topic has 10 replies, 2 voices, and was last updated 12 November 2019 at 00:19 by Mr Spoon.

Viewing 11 posts - 1 through 11 (of 11 total)

Author

Posts
3 November 2019 at 23:28 #435893
Mr Spoon
Participant
@mrspoon82510
New here but lurked for a long time. About time I got involved!

I have a Colchester Triumph round head lathe. Owned it for years but only now getting it up and running.

I have a problem with the start lever. It will not latch into place. It doesn't have much travel. I have to hold the handle up firmly. The reversing switch works fine though.

If I adjust the stops at the back until it latches then the limit switch trips in and it wont start at all.

Do I need to dismantle the rear switch or is it just an adjustment problem? What is the purpose of the rear limit switch?

Any help most welcome.
Advert

3 November 2019 at 23:28 #13686
Mr Spoon
Participant
@mrspoon82510
4 November 2019 at 21:32 #436035
Phil Whitley
Participant
@philwhitley94135
Right! first I have a roundhead student, not a triumph. Is it anything like this on yours? The round drum is the forward/reverse, and the box with the plunger is the start/stop. it does require adjustment to stay locked down, but as I remember it is adjustment on the lever mechanism, not the switch itself.
5 November 2019 at 01:48 #436058
Mr Spoon
Participant
@mrspoon82510
Thanks for that.

mine is pretty similar.
5 November 2019 at 01:49 #436059
Mr Spoon
Participant
@mrspoon82510
So is the switch at the bottom the actual stop start?

It says limit switch on it.
5 November 2019 at 20:15 #436152
Phil Whitley
Participant
@philwhitley94135
yes, that is the stop/start, and when I rebuilt my student, I had to mess with the adjustment to get it functioning again, I will have a look tomorrow when I am at the workshop and get back to you tommorow
6 November 2019 at 00:01 #436168
Mr Spoon
Participant
@mrspoon82510
Thanks for that.

So basically if you push that plunger down at the back of the lathe it should run?
7 November 2019 at 14:20 #436330
Phil Whitley
Participant
@philwhitley94135
Yes it should, and you should hear the relay behind the control panel at the front click in (loudly)
7 November 2019 at 17:55 #436346
Mr Spoon
Participant
@mrspoon82510
Just tried it – the lathe started fine – loud clunk from below – but then stopped again after a second or so. It seems as if it cuts out if you push the switch down too far. Is that correct or do you think the switch needs adjusting?
7 November 2019 at 20:05 #436370
Phil Whitley
Participant
@philwhitley94135
you need to have a look behind the belt guard and adjust the locknuts till you get this effect, see the pics marked "ON" and "OFF". mine is not the saftiloc type, just an up/on down/off switch, but looks exactly like yours. On the saftiloc type you had to pull the handle towards you, then lift it before the lathe would start.

yes, I think if it goes to far it will switch off again
12 November 2019 at 00:19 #436928
Mr Spoon
Participant
@mrspoon82510
I opened the switch to see what was going on.

Any idea why it is designed to trip off if you push it down too far?

Really annoying. When I adjust it to latch it is on the verge of tripping. To get it to run I have to push the bottom contacts back down again.

Any chance of opening the switch cover and taking 2 photos – up and down? With the lathe UNPLUGGED of course!
Author

Posts