Polar moire 115 CE squaring backgauge

*Polar mohr 115 CE
Hello, I’m reaching out to your expertise because we would like to adjust the squareness back gauge of our guillotine.
It’s not perfectly aligned, there’s a 0.2mm misalignment… we would like to fix this issue, and for now, we’ve placed a piece of adhesive tape to cover the gap.
We don’t have the service manuals, and someone could help us by describing the exact steps to follow? I’ve attached a few photos where I’ve numbered the screws, but we’re unsure which ones to loosen to make the adjustment. Could you also tell us what each numbered part in the photos is for?

We would love to understand this old machine!

Thank you, Tom

 

Unlock by loosening 1 in your drawing .dial 3 turn clockwise or anticlockwise to move saddle, scale should be + or- 0.1mm.then check square, it is trial and error. When square lock 1. 2 on your photois for up and down adjustment. 4 is for fixing whole thing down. Only loosen 4 if you are adjusting 2.

 

Thank you for your valuable help, Andy! It’s very clear now, I wasn’t sure and didn’t want to make a mistake!
Do you know what 5 and 6 are for in the picture?
Thanks again!

 

5 and 6 are used to hold the magnetic tapes in place which are under the concertina cover. They hold the program information

 

Not many Polar CE models around these days. The company I work for still has some spares, for future information if your machine breaks down

 

Thank you Andy for your explanations. Yes, the parts are a real issue, it’s a shame because it works very well. We already had a problem in 12 years with an ERNI relay… impossible to find, an electrician helped us by retrieving one from a cutter’s card.
Recently, there’s a problem I haven’t been able to diagnose yet. It stops in the low position, with the blade down. The only way to get it going again is by manually lifting it to the high position. This happens randomly several times a week, or nothing for 6 months. I first thought it was the push buttons, which have been replaced, but no, I’m increasingly wondering about the limit switches on the cam.

 

Very rarely do the cam switches go faulty, if my memory serves me correctly, follow the wire from the cam switches it should lead to a little box located at the back of the control panel. Guess what, located in this box are Erni relays controlled by the cam switches. These go faulty. If you send me the numbers I can offer you a price to send you new ones

 

I’m not sure I understand Andy, I checked the switch wires, but they go towards the PCB boards at the bottom of the guillotine, and there are a lot of wires all grouped together, so I’m losing track of things
What’s strange is that it’s an ERNI REL37 B1 5.5 24V relay that has already been replaced on board 7. I can’t seem to locate the small box you’re talking about.

 

I see now, going by your photo of the printed circuit boards,your model is different to uk models. I will try photo drawing of cam switch wiring and put on here tomorrow, see if it helps you

 

Is it a white light or infra red protection at front of guillotine

 

Red protection, but it was disabled by the previous owner. There is a small box at the back where the wiring for the push buttons connects

 

Are you saying the protection at athe front of the machine has been disconnected. So the machine will cut if you had your hands in front of the light barrier and some one pushed the buttons to cut

 

Yes… I know it’s very dangerous, we are aware of it and are being extra cautious. There are only two of us, and only one person is using it. Just talking about it gives me a cold sweat! If we had known at the time of the purchase…

 

Thanks Andy, I'll check all of that! Thanks for the help and the time you've dedicated!

 

Adjusting bolts 1 and 3 "push" against a center guide that is solid with the gibs underneath. If you turn one, you will need to turn the other the same amount. You cant unscrew one and expect the backgauge to pivot. You will need to screw the other side in the same amount.