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Old 29.03.2015, 19:01
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DIY blind belt replacement

I need to replace the belts/bands that have broken in one of my horizontal-blind style shutters (lamellen storen).

But I cannot work out how to get the mechanism open!

Does anyone have an idea how to open up the unit shown in the picture? Maker is "Perma System", they're pretty old but work so I don't want to break them through brute force (just yet...)

I've tried sliding the top along and removing the drive bar with no luck; maybe I need to bend back the housing, but it doesn't feel like that and there's no sign they were made that way.

Thanks in advance.
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Old 29.03.2015, 23:56
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Re: DIY blind belt replacement

Try:
http://reparieren.blogspot.de/2012/1...en-offnen.html
Or Google for:
lamellenstoren zugband gerissen youtube

Last edited by me.anon; 30.03.2015 at 00:19. Reason: Addition
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Old 30.03.2015, 10:26
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Re: DIY blind belt replacement

Thanks, but they're slatted shutters, not rolladen which are much easier.

There's lots of YouTube videos showing complete replacement, and for interior ones, but nothing I can find for replacing the bands on exterior ones.


ps. the shutters are removed from the building, so I have full access to everything, I just can't get the plastic tilt/raise mechanism apart to access the belt. I guess I could sew a new belt on to the remains of the old one, but only as a last resort.
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Old 30.03.2015, 10:35
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Re: DIY blind belt replacement

Hi,

you should be able to bend the metal housing outwards a bit and the plastic elements should then pop out - but they will still be attached to the bands and drive shaft. It might be a bit tough, but you shouldn't break anything (push firmly down on the plastic element, and pull out the metal side-wall; once it's free, remove the plastic cover, and then it will also unclip from the other side).

The plastic elements may be in two parts, consisting of a top cover and the base (which holds the winch). Removing the top cover will allow you to inspect the winch and band. From this point you should have enough access to replace the band.

How easy it is to replace the band, I don't know, as it is also fixed into the base at the bottom of the blinds. It may also be difficult to get spare parts, (as repairing such things yourself is kind of unheard of here - this is also why it's such a struggle to find any related information on the internet), so suppliers may not be willing to provide any parts.

Also, top-tip here: when you rebuild it, you might find that the base is not level when winding it up. In this case (if there is no other means of adjustment), a small stapler is commonly used to 'adjust' the bands - fix a staple into the band which is longer. Stainless steel staples would ideally be your staple of choice.

(I took all ten of ours down, and rebuilt them with electric motors - I had to get all the parts from Germany, as the Swiss suppliers of the same equipment (Elero) absolutely refused to supply the components to us - we would have had to have contacted a 'storenbauer' who would do the work for us - for an astronomical price, more than likely.)
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Old 30.03.2015, 10:50
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Re: DIY blind belt replacement

Many thanks @chrisIDS - I can buy the bands online, e.g. http://shop.mps-elektro.com/Jalousien/Texbaender-u-a-/ but don't know exactly what to order until I get them apart.


I was hoping to not bend the metal, but it was only a faint hope!


I'll also automate them, but not this year, so this is partly an experiment to see how easy they are to work with, unfortunately the answer seems to be they're a pain.


Which German shop did you use? Any feedback?
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Old 30.03.2015, 11:27
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Re: DIY blind belt replacement

They can be a fiddly pain to work with; just requires patience!

Anyway, we got our stuff from http://www.friedrich-schroeder.de/.

Very good, and also deliver to Switzerland.
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