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Pumpex K 152, Service Instructions Manual, Page: 10 / 16

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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.

Pack lower bearings with grease (type SKF Alfalub LGHT 3/1 or
similar) and slide the bearings on to the shaft with the wider
sides of the inner rings facing each other. See sketch.

Place upper bearing on the shaft and press all three (3) bearings
into positions, i.e. against the shaft shoulders.

Mount bearing washer and circlip on the shaft below lower
bearing.

If a press is not availabIe, heat bearings to 100-120 °C in an oil
bath prior to assembly.

Note: Do not overfill bearings and bearing covers with grease.
Bearing manufacturers recommend to fill covers and bearings
2/3 full.

Summary of Contents for K 152

Page 1: ...K 152 202 203 252 302 SERVICE INSTRUCTION 1 15 K152 202 203 252 302 58 0101 Eng Digital ...

Page 2: ...ubmersible The pump is supported by an adjustable fabricated steel stand mounted at the factory The height of the stand is sufficient for the standard suction elbow to be used on a flat floor The pump volute is drilled or threaded on the connection flange and equipped with studs on the suction flange The motors are equipped with a maintenance free internal closed loop cooling system which dissipat...

Page 3: ...ors are always equipped with a maintenance free internal closed loop cooling system which dissipates the heat to the liquid that is being pumped An exchange system is used for the Stator Unit and Mechanical Shaft Seal Unit Box 5207 S 12116 JOHANNESHOV SWEDEN 5 6 7 8 9 1 2 3 4 K 80 No 99999999 P 2 2 0 kW 3 Ph 50 Hz U 400 V Y n 1385 rpm Class F IP68 I 5 4 A 98 kg 20 m 1 Type of pump 2 Serial number ...

Page 4: ...ays check that the pump is disconnected from the electric power supply and cannot be energized prior to any work being carried out The motor unit is assembled to the volute by two 2 latch bolts Loosen the latch bolts with a wrench supplied with the pump and turn the latches free from the flange of the motor unit The motor unit can now be separated from the volute ...

Page 5: ...nit to drain all the oil from the oil housing Replace the 0 rings for oil plug and oil stick and tighten the oil plug Fill new oil through the hole for the oil stick Oil type Enerpar M002 or similar Oil quantity 11 15 kW motor 14 5 litres 23 40 kW motor 18 5 litres Don t forget to tighten oil stick Removal of Impeller The impeller is fitted on a cylindrical shaft end To simplify the loosening of t...

Page 6: ...ly the seal unit will back off from the oil housing bottom A defective seal unit should always be replaced The defective seal unit should be sent to the nearest service point in ex change for a rebuilt unit Removal of Stator Unit Place the motor unit in an upright position Remove the screws holding the stator housing and oil housing together Remove the two 2 plastic caps and screw two screws M 12 ...

Page 7: ...press out the shaft rotor unit Bearings which have been in contact with water or otherwise damaged shall be replaced Place the shaft rotor unit in a wise with soft jaws Remove the circlip and bearing washer from the shaft Screw the impeller bolt onto the shaft in order not to damage the threads when using a bearing puller Mount the puller over the ball bearings and pull off the bearings Turn the r...

Page 8: ...d ground stator housing If the insulation resistance is below 1 megohm the stator unit should be dried in an oven the temperature pre ferably not to exceed 90 C Check the circuit of the three 3 built in thermal contacts for continuity using an ohm meter or bridge If the circuit is open the defective contact should be identified by checking each individual thermal contact The faulty thermal contact...

Page 9: ...ing groves and mating surfaces Grease or oil 0 rings to eliminate damage during assembly Put some grease or oil on screw threads to simplify disassembly during future overhaul Assembly of Cable Entry Measure inner diameter of cable entry rubber bushing to see that it corresponds to cable diameter Place rubber bushing and washers one 1 on each side of the bushing on the cable Pull cable through the...

Page 10: ...e type SKF Alfalub LGHT 3 1 or similar and slide the bearings on to the shaft with the wider sides of the inner rings facing each other See sketch Place upper bearing on the shaft and press all three 3 bearings into positions i e against the shaft shoulders Mount bearing washer and circlip on the shaft below lower bearing If a press is not availabIe heat bearings to 100 120 C in an oil bath prior ...

Page 11: ... Unit Place oil housing and shaft rotor unit on its side for assembly of the mechanical shaft seal unit Add some oil to the shaft and apply grease on the 0 rings of the shaft seal unit there are two 2 0 rings fitted on the seal housing and one 1 inside the shaft sleeve Slide the seal unit on the shaft and press gently into position Do not use hammer Tighten the three 3 screws firmly Fill oil as de...

Page 12: ...screws Place the shaft rotor unit oil housing assembly in an upright position and remove the old gasket Clean the mating surfaces between oil housing and stator housing with a knife or scraper Cover up the oil channels to avoid foreign objects from falling down into the oil chamber Apply glue e g Permatex on both sides of the gasket and mount it on the oil housing Check that the oil channels are o...

Page 13: ...k that the oil circulation channels are facing each others Tighten the eight 8 screws holding the stator unit to the shaft rotor unit oil housing assembly and mount plastic caps in the two 2 threaded holes Assembly of Impeller Place the flat key in the shaft key slot The impeller can now be pressed on the shaft by hand Lock the impeller with a piece of wood pipe or similar Mount impeller bolt with...

Page 14: ...lation an 0 ring is used between volute and oil housing Adjustment of Volute Wear Ring Lay the pump on its side and check the clearance between impeller and volute The clearance shall be max 0 7 mm Should the clearance be larger loosen the screws holding the adjustable volute wear ring and tap the ring gently with a soft hammer until clearance is correct Tighten the screws Note Older pump versions...

Page 15: ...52 202 203 252 302 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 ...

Page 16: ......

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