beka
Hello! I recently bought a brand-new Opemus 6 with a colour filter wheel. When I try to fold the colour filters in or out using the lever, it doesn’t move the filters. When I then turn the filter wheel itself, it clicks into the correct position. Does anyone have any advice on whether this can be fixed? I haven’t had a look inside to see how the system works yet.
Gast
From your description, I reckon something’s come loose inside. You’ll probably have no choice but to unscrew the casing. Judging by my Meograde head, which is surely built in a similar way, it can’t be all that difficult. Don’t worry.
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Regards, Jürgen
Renate
That sounds very much like congealed grease. So unscrew it, take it apart, wash it, re-grease it and put it back together. It’ll take a couple of hours, and then it’ll be working smoothly again.
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Best regards
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Renate
StraDi
Even though this thread is a bit old… it’s certainly not obsolete.
There is absolutely NO place for ‘grease’ or ‘oil’ in a colour mixing head! I don’t know of any colour mixing head – from Kaiser to Durst to Omega Chromega and many others – in which the mechanical parts for adjusting the filter are greased or need to be greased!
Likewise, cheerfully ‘taking apart’ one of these is not without its problems, as – particularly after an equally cheerful ‘wash’ – the filter settings will ideally no longer be correct... depending on the mechanical design.
Ink mixing heads can often be dismantled quite easily; in most cases, a simple and careful cleaning of the mechanism with alcohol and cotton buds is sufficient, taking great care not to touch the filters. You should not grease anything at all! The halogen lamps give off enormous heat, which causes volatile components of the greases and oils to evaporate and, over time, a coating to build up, particularly on the lamp and filters.
cu ...
Dirk
Renate
It’s all down to skill and dexterity. You’ll soon see which grease to use, where it needs to go and where it shouldn’t. If you take a careful approach, you won’t end up adjusting the filter settings either. As every colour head works differently, I can’t provide a one-size-fits-all guide.
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Best regards
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Renate
StraDi
From:
"So, unscrew it, take it apart, wash it, re-grease it and put it back together."
To:
"It’s all just a question of skill and dexterity. You’ll see for yourself which grease to use, where it needs to go and where it shouldn’t. If you proceed carefully, the filter settings won’t be affected either."
Given the potential problems that might arise (grease and oil at high temperatures, adjustment/calibration of the filters, etc.), that’s actually quite an incoherent statement. Especially considering that it can be quite difficult, if not impossible, for the ‘average’ user to check this. :)
Wolf_XL
I consider “adjusted filter values” to be nonsense – the values on the colour mixing head scales do not correspond to any physical quantity – they are merely a division arbitrarily defined by the manufacturer, ranging from “no filter effect” to “full effect”… So it simply needs to be ensured, on the one hand, that the minimum and maximum values can be set at the endpoints of the scale where possible, and, on the other hand, that the readings are reproducible. The colour mixing head for the Opemus III, for example, had the annoying quirk that if I had adjusted the filter from 40 to 60, for instance, and then turned it back to 40 again, the two 40 values differed. It nearly drove me to despair a few times... If you wanted to go back to the previous filter value from a higher one, you first had to set the filter to ‘zero’ and then set the old value again from there...
