ᐅ Steel garage door from the 1990s does not close properly

Created on: 6 Jun 2021 02:59
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1080p
6 Jun 2021 02:59
Hello home builders,

When I bought my house, the garage had an old up-and-over garage door from Normstahl, probably from the 1980s or 1990s. I can’t find the exact model name, nor any old manuals, YouTube tutorials, or forum posts about it. The door itself is still in pretty good condition, with heavy tin plating, no rust, and no mechanical damage. So far, I’ve operated it manually—it requires a bit of a jiggle to fully close and lock into the frame, but it’s been fairly easy.

Now, an electric opener (RolloPort S1) has been installed, which attaches at the center of the top edge of the door. When force is applied at this point, the door no longer fully closes. Even by hand, I can’t get it to close properly from this position. The motor drive is properly aligned; nothing is pushing, pulling, or causing binding sideways.
I checked the mechanism and springs and lubricated everything but couldn’t find any adjustment options. I believe the door is not centered when closed: it presses on one side, while there is a 15mm (0.6 inch) gap on the other side.

If anyone is familiar with this type of door, I would appreciate any tips. Also, if someone knows a company that still services or adjusts these old doors in Berlin, I’d be grateful for that information as well. It would be a shame to replace this durable door, especially since it’s actually the most modern part of the garage ;-)

Best regards

Open garage with workbench, shelves, boxes, toolboxes, and ladder; stone floor.
H
hampshire
6 Jun 2021 11:18
Observe and measure whether the gate leaf and the frame deform under tension within the masonry. Some systems not only pull in the center but also push against the frame. This can quickly cause movements of several centimeters (inches), enough to cause jamming. Often, better fastening of the upper horizontal part of the metal frame to the masonry helps, since the gate itself is less often the issue.
D
driver55
6 Jun 2021 14:17
I read that it was already sticking when closing by hand.

I would first unhook the electric drive and identify the pinch point(s) when closing manually, fix them, and then observe the behavior again with the electric drive.
There aren’t many possible causes for this type of gate.
G
GeradeSchräg
7 Jun 2021 16:00
Hi, I have taken a look at the operator manual.

Since these points haven’t been mentioned here yet, here are some things I noticed:

Check the gate hinge or pivot angle; you might need a curved one.
Does the operator have enough power for your gate? It’s possible that the operator shuts off for safety reasons if the load is too high.
Have you tried adjusting the force limit?
Are the end points correctly programmed?