Kessel Staufix FKA Einbau- Und Betriebsanleitung Seite 32

2.3 Intended use
The control unit is to be used exclusively for the control of
backwater valves type Staufix FKA and Ecolift L FKA for fae-
cal-free and faecal wastewater. The control unit must not be
used in a potentially explosive environment.
Any of the following actions that are not expressly authorised
in writing by the manufacturer can invalidate the warranty:
modifications or attachments
use of non-genuine spare parts
Repairs carried out by companies or persons not autho-
rised by the manufacturer
32 / 168 Installation and operating instructions