Do this carefully and add no more than 2 turns at a time. If it doesn’t, you may need to put a few extra turns in the metal tab to increase the tension. It should slide up and down freely and roll up completely as you would expect. Now test the blind to ensure there is sufficient tension in the roller. With the roller in the frame, replace the holding clips at both ends to secure the roller back in the frame. I found using flat head pliers to hold the tab while pressing the tab into the frame helped keep the tension.
Turn it approximately 4 or 5 more turns and place the roller back into the frame ensuring you do not let go if the metal tab and release the tension. Roll up the whole the blind back onto the roller then, turn the metal tab at the right hand end of the roller in a clockwise direction until you feel it start to tension up. Once the roller is back together, you’ll need to tension the roller. I used the flat head screwdriver but I was conscious not to slip and stab myself or damage the roller. It’s almost impossible to do it with your fingers so you’ll need a tool to assist. Again….you need to be careful how you do this.
Once the spring is secured back to the end tab, you need to push the tab back onto the roller. Ours went on fairly tightly and I don’t expect it to come off again but I think some sort of adhesive like a drop of super glue might help prevent this happening again. You will see that it simply pushes back onto the black stopper. Tip the roller to the right and the spring should fall into sight. Very carefully prise off the right hand plastic end of the roller using a flat head screwdriver. If you have no tension in the roller at all and the blind has seized completely, you will need to expose the spring. You can now skip to step 6 for reassembly. 2 or 3 turns in a clockwise direction should suffice. You simply need to put a few extra turns in the spring to increase the tension. Holding the right side metal end as it comes out of the housing is the best way to do this.
If that’s the case, undo the small screws holding the roller in the frame at both ends of the roller and carefully lift the roller out of the housing ensuring the roller doesn’t suddenly unwind as there will be some tension in the system. If you have some tension in the blind but it doesn’t roll up completely, it will just need extra tension wound into the spring. Now, depending on what the problem is with your blind, there are 2 separate processes. Lift the frame off the wall and place on a table. Remember to remove the screws from the bottom first and support the frame when removing the last screw from the top. Undo all the screws and store them and the tabs in a safe place. Remove all the small plastic tabs to expose the screws that secure the blind assembly to the wall. This is a step by step guide to restoring tension in the roller blind of Dometic Alloy Chal Tinted Windows.
Roll up tinted window shades windows#
I was about to give up when I found that these windows are indeed repairable and its extremely easy to do. I did a search on the internet for a solution however I couldn’t find anything that seemed to match our windows. If this happened to one of the larger windows, it would be very expensive to fix. At the cost of around $400 to replace the entire window, I was a little miffed. I had heard that it was likely the spring inside the roller had broken and that the only solution was to replace the entire window as spare parts were not available. This happened to the blind in our small Dometic window in our ensuite. Anyone who has the Dometic push out windows on their caravan or motorhome will know that, while they are very convenient, they have a habit of binding up and, occasionally, the roller mechanism stops completely.
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