Installation and operating manual 53 016-059
6. Maintenance
Isolate the system! Make sure that cables and electrical
components are disconnected from the power supply during
work.
6.1 Maintenance interval
Period Application case
1 year in single-family homes
6 months in multi-family homes
3 months in commercial buildings
6.2 Preparing maintenance
Unlock the Lock & Lift system by turning the key counter-clockwise. ➊
✓ Cover plate is lifted by turning.
Lift out the cover plate. ➋
Open the quick-release closure on the backflow preventer. ➌
Lift the pump out. ➍
Fig. [19]
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