Graf KLARO Easy Notice D'installation page 44

The pumping processes are carried out using air lift pumps
(or "mammoth" pumps). The special construction of the lift-
ers ensures that the minimum water level is defined precise-
ly (see adjacent figure). If the water level drops below the T-
piece, no more water will be extracted. When installing the
lifters, make sure that the cross-connection is installed with
the T-piece at the height of the minimum water level.
3. Installation and operating principle
Detailed technical drawings of the systems are available from Otto Graf
GmbH and are applicable for assembly and installation.
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Maximum water level
Inlet
Operating principle for the feeder
and clear water lifters
T-piece
Minimum water level
Compressed air