Submersible sewage pump as floodable, single-stage block unit in stationary, vertical installation for pumping of untreated sewage, which attacks the pumps neither chemically nor mechanically. Pump with radially arranged discharge piece and axial pump intake. Service-friendly unit structure by separated motor and pump housing unit. The duty values must be guaranteed according to ISO 9906, class 2B.
Submersible motor in pressure-resistant design, with double mechanical shaft seal in EMU block design, as well as separate
sealing chamber filled with medical white oil and additional leakage chamber with float control. Motor chamber dry. Sealing
of the motor at the shaft by a double, wear-resistant mechanical shaft seal independent of the direction of rotation entirely
made of silicon-carbide as closed unit in sealing cartridge of stainless steel and additional shaft sealing ring. Both seals in the
sealing cartridge are cooled and lubricated by medical white oil or water/glycol on customer’s request. The motor chamber is
equipped with connecting terminals. Protection of the motor winding by thermistors installed. Both closed ball bearings are
maintenance-free and filled with high-quality grease. All casing parts are of cast iron, shaft and connecting elements are of
stainless steel. The motor is suitable for intermittent operation (S2) under full load in emerged condition.
