“Sandy” electric submersible sludge pump

Technical data and special features:

• Air valve: forced cooling of the pump in a dry-running situation / SMART motor protection: phase failure protection, direction of rotation control / Pump cover: easy maintenance of the electrical components / Outer casing made of corrugated stainless steel
• External oil check screw: easy service and maintenance / Test chamber: early warning of sealing problems / Cartridge seal: pre-assembled, easy and quick installation / Vortex impeller: clogging-proof / Polyurethane-coated flow casing: higher wear resistance
• Three-phase electric motor: squirrel-cage motor, insulation class: H (IEC 85)
• Pump type: N – normal pressure and H – high pressure
• Max. delivery head: 30 m (N) / 44 m (H)
• Max. flow rate: 1,020 l/min (N) / 480 l/min (H)
• Shaft speed: 2,890 rpm
• Rated current at 230 V: 19 A / Rated current at 400 V: 11 A / Rated current at 500 V: 8.7 A
• Pressure connection : 3″ / Pressure connection: ISO-G
• Motor protection: Phase monitor for phase sequence and phase failure, temperature monitor with thermal sensors in the stator open at 140 C (= SMART system), air cooling valve
• Rubber hose cable – SubCab: 4G2.5 mm, length 20 m
• Bearing: Ball bearing with C3 pitch
• Passage: 46 mm (N 1.8″) / 32 mm (H 1.3″)
• Optional accessories: zinc anodes, float switches, external float switches, floating pontoon

Application limits:

• Max. immersion depth: 20 m
• Max. liquid temperature: 40 C
• pH value of the liquid: 5 – 8
• Max. density of the liquid: 1,100 kg/m

Materials:

• Castings: aluminum
• Outer housing, motor shaft, screws/nuts: stainless steel
• Wheel: Hard-Iron
• Flow housing: aluminum/polyurethane
• O-rings: Nitrile rubber

Shaft seals:

• Seal cartridge with double sliding ring in an oil chamber
• Material – lower seal: silicon carbide – silicon carbide
• Material – upper seal: tungsten carbide – tungsten carbide

• Connection voltage: 400 V
• Input power: max. 6.7 kW
• : 480 mm
• Frequency: 50 Hz
• Weight: 57 kg
• Height: 879 mm
• Brand: Grindex
• Rated power: 5.6 kW
• Protection class: IP68