Maintenance and repair

Maintenance and repair work can only be carried out by qualified staff (e.g. customer service). The maintenance intervals in accordance with EN 12056‑4:

• ¼ year for commercial operations
• ½ year for multi-residential buildings
• 1 year for detached houses

Record all maintenance and repair work in a log. The log must be signed by the qualified staff and the operator.

Perform a test run after the maintenance work.