4 Service.
4.1 External inspection
In order to protect the pump and impeller from abrasive particles and jamming, dust that enters the
pump with the pumped air must be flushed out of the pump chamber through the opening under the
cover.
If the working fluid is hard water, it must be softened or the pump must be flushed
periodically with a solvent (10% oxalic acid solution).
4.2 Detailed overview
Please note: Pumps must be repaired at the manufacturer's
premises or by specialists authorized by the manufacturer.
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