Dormakaba ES 250 PRO - 4.17 Adjust the tensioning device

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WN 059677 45532 - 11/2023
ES 250 PRO/ES 250 PRO FST
ES 400 PRO/ES 400 PRO FST
Mounting instructions
13. Tighten the screws on the tensioning device.
Fig.62
13.
4.17 Adjust the tensioning device
1. Slide the door leaf along the entire travel path. Check whether the toothed
belt is running centrally on the wheel assembly of the tensioning device.
If the toothed belt is not running centrally on the wheel assembly, the
tensioning device must be adjusted.
Fig.63
2.
4. 3.
2. Loosen the nut.
3. Adjust the tensioning device.
4. Tighten the nut.