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Summary of Contents for Pumpex K 152
- Page 1 K152/202/203/252/302.58.0101.Eng/Digital K 152, 202, 203, 252, 302 SERVICE INSTRUCTION 1 (15)
- Page 2 K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital This Service Instruction applies to the following Electric Submersible Wastewater Pumps: K 152, K 202, K 203. K 252, K 302. Type F Wet Pit Installation Installed on a guide rail system with a quick-release base elbow, the base elbow is bolted to the floor of the sump.
- Page 3 SERVICE INSTRUCTION K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital Technical data The technical data are stamped on the data plate, which is located under the pump handle. A Type of pump B Serial number C Working voltage D Rated current E Rated output F Cos ϕ...
- Page 4 SERVICE INSTRUCTION K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital Disassembly Remove the pump from the pit and rinse it with water. Warning! Always check that the pump is disconnected from the electric power supply and cannot be energized, prior to any work being carried out.
- Page 5 SERVICE INSTRUCTION K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital Exchange of oil Exchange of oil should be carried out if the oil is discoloured by water or when a complete overhaul is done. Place the motor unit on the floor or a low work bench. Loosen the oil stick carefully to relieve over-pressure in the oil chamber.
- Page 6 SERVICE INSTRUCTION K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital RemovaI of Mechanical Shaft Seal Unit Remove the three (3) screws holding the seal unit to the oil housing bottom. The seal unit flange is provided with two (2) threaded holes. Clean the holes with a small screw driver (or tap M 6).
- Page 7 SERVICE INSTRUCTION K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital Removal of Shaft/Rotor Unit and Bearings The shaft/rotor unit and oil housing is held together by six (6) screws in a bearing cover above the lower ball bearings. Remove the screws and press out the shaft/rotor unit.
- Page 8 SERVICE INSTRUCTION K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital Exchange of Stator Unit If the motor overload protector has tripped repeated times, the stator should be checked. Remove the junction box cover. Remove the motor cable leads from the terminal board.
- Page 9 SERVICE INSTRUCTION K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital Disassembly of Cable Entry If water has penetrated through the cable entry into the junction box, the cable entry bushings should be replaced. Remove strain relief clamp on cable entry prior to unscrewing cable entry body.
- Page 10 SERVICE INSTRUCTION K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital Assembly of Bearings Check that the shaft is straight and key slot not damaged. Clean the shaft from burrs and foreign materials. Slide the bearing cover on to the shaft in such a way that the cover hub is facing the rotor.
- Page 11 SERVICE INSTRUCTION K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital Assembly of Shaft/Rotor unit and Oil Housing The shaft/rotor unit with bearings, is now complete and can be assembled to the oil housing. Press the lower bearing into the oil housing by hand. Lock the shaft/rotor unit into position by tightening the six (6) screws for the bearing cover.
- Page 12 SERVICE INSTRUCTION K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital Fit the terminal board plate (and terminal Connect the stator leads to the terminal boards) and tighten the three (3) screws. boards in accordance with the wiring diagram Old Marking New Marking...
- Page 13 SERVICE INSTRUCTION K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital Lift the stator unit in a hoist and place it over the shaft/rotor unit/oil housing assembly. Lower the stator unit into position. Be careful not to damage windings and check that the oil circulation channels are facing each others.
- Page 14 SERVICE INSTRUCTION K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital Assembly of Volute Turn the volute latches away from the centre of the volute and assemble the volute to the motor unit. The volute flange should meet firmly with the mating surface of the motor unit. Turn latches into locking position and tighten the bolts evenly.
- Page 15 SERVICE INSTRUCTION K 152, 202, 203, 252, 302 K152/202/203/252/302.58.0101.Eng/Digital Testing Connect motor cable to power supply and start the pump. The starting arrow shown on the junction box cover indicates direc- tion of rotation, Note! Each time the pump is removed, check lifting handle and that corresponding screws are firmly tightened.
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