58
Motor-driven lock for timber and steel doors
Operating instructions
B-2156x | B-2157x
11.2021 | | Designed in Germany
EN
8.
Maintenance and care
Maintenance work may only be carried out by qualified personnel who have been trained or
authorised by the manufacturer.
The operational availability must be verified at regular intervals.
A defective product must be replaced by a new one.
Additionally, check that all fixing points are secure. Loose hose connections must be re-tightened.
Contamination that impairs the mechanical properties of the product (e. g. key or lever handle
operation/latchbolt) must be cleaned.
The lock mechanism is lubricated for life and is therefore maintenance-free.
Lightly grease the latchbolt head 1x annually. Do not use oil or penetrating oil, e. g. WD40 as this
could damage lock electronics!
