WIRE MACHINE - Cutting speed went down drastically

[dzcatic]

Hello,

I have Fanuc wire machine (Tape cut - model 1). It is the old one, but still in a good shape

English is not my native language, and I am not a person with a technical background I hope you will not have a bad understanding.

In the last period, cutting speed went down more than 2x. I am not able to figure out what is the problem. I have a feeling when a machine is in the process of cutting that wire is sticking to the piece.

First I was thinking the water is the problem but after I changed the complete system problem repeats.

Machine works well, I always have correct measurements after work is complete, but work is very slow.

Does anyone have an idea what could be wrong? What should I check?

In the attachment, I have one image. Can someone answer the questions below once he takes a look at the image?


What is correct name of these two switches, and where I can order them (e-commerce site would be the best option)?


Could they cause the problem why machining is slow?

Can I take them out and clean?

Regards,