Multitech 1777.8/7-10 G3 operating instructions Tightening the shaft nuts on Multitec pumps

Page 23

Multitec

Caution When tightening the shaft nuts, please observe the following:

The shaft nuts must be tightened to the torques indicated in the table ”Tightening torques for shaft nuts”.

Tightening the shaft nuts on Multitec pumps

Shaft nuts without lockwasher

Caution

Not applicable to drive end on MTC 32/50/65 with self-locking shaft nut

 

 

 

 

 

 

 

 

 

 

 

 

 

Tightening torques for shaft nuts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drive end

 

 

Non-drive end

 

 

 

 

 

 

 

 

 

Pump size

 

A, B, C, D

E,F,V

 

A,B,E,F,V

C,D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nut

Nm

Nut

 

Nm

Nut

Nm

Nut

 

Nm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

80 1)

 

 

80 1)

 

 

 

 

80 1)

MTC 32

 

M 25x1,5

40 (***)

M 25x1,5

 

40 (***)

M 25x1,5

40

M 25x1,5

 

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100 (*)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

80 1)

 

 

80 1)

 

 

 

 

80 1)

MTC 50

 

M 30x1,5

40 (***)

M 25x1,5

 

40 (***)

M 30x1,5

40

M 30x1,5

 

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

120 (*)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100 1)

 

 

80 1)

 

 

 

 

100

MTC 65

 

M 35x1,5

50 (***)

M 30x1,5

 

40 (***)

M 35x1,5

50

M 35x1,5

 

50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

150 (*)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

150 1)

 

 

150 1)

 

 

 

 

150 1)

 

 

M 42x1,5

 

M 42x1,5

 

 

 

 

 

 

 

MTC 100

50

 

50

M 42x1,5

50

M 42x1,5

 

50 (***)

 

(2x)

(2x)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

150 (*)

 

 

150 (*)

 

150(*)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

200 1)

 

 

200 1)

 

 

 

 

200 1)

 

 

M 52x1,5

 

M 52x1,5

 

 

 

 

 

 

 

MTC 125

60

 

60

M 50x1,5

60

M 52x1,5

 

60 (***)

 

(2x)

(2x)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

200 (*)

 

 

200 (*)

 

200 (*)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

250 1)

 

 

250 1)

 

 

 

 

250 1)

 

 

M 62x1,5

 

M 62x1,5

 

 

 

 

M 62x1,5

 

 

MTC 150

 

80

 

80

M 60x1,5

80

 

80

 

(2x)

(2x)

 

(2x)

 

 

 

 

 

 

 

 

 

 

 

 

 

250 (*)

 

 

250 (*)

 

250 (*)

 

 

250 (*)

 

 

 

 

 

 

 

 

 

 

 

 

1)loosen after first tightening

(*)block first nut when tightening

(**)self-locking nut

(***) bend over lockwasher

Tightening the shaft nuts on Multitec pumps

Nut with lockwasher - (drive end and non-drive end on versions C and D)

M1

M2

1.) Tighten nut to torque M1, then loosen again

2.) Tighten to torque M2 and bend over lockwasher

Nut with locknut - drive end (and non-drive end on versions C and D)

M1

M2

M3

1.) Tighten first nut to torque M1, then loosen again

2.) Tighten first nut to torque M2

3.) Tighten second nut to torque M3, at the same time blocking first nut

Nut with locknut - non-drive end (except versions C and D)

M1

M2

1.) Tighten first nut to torque M1

2.) Tighten second nut to torque M2, at the same time blocking first nut

Self-locking nut - old version MTC E/F/V 32/50/65 (drive end)

No torques given

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Contents Works No Type series High-pressure pumps in ring-section designOperating instructions 1777.8/7-10 G3 Multitec Contents Multitec Index Section Adjusting dimensions for couplingMultitec General SafetyTransport, storage MultitecDescription Product AccessoriesClose-coupled pumps Multitec Installation at siteFoundation / Checks to be carried out prior to installation Installing the pump/unit100 120 Nm Aligning the pump / drive Coupling guardBe tightened to the following torques Tightening torque Thread Strength Drive Non-drive EndProtection against foreign matter Connecting the pipingMax. permissible pipeline forces material codes 10, 11, 12 Max. permissible pipeline forces material codes 20 toChecking the direction of rotation Connection to power supplySetting the time relay Vacuum balance lineMultitec Commissioning, start-up / Shutdown Gland packing Temperature of the fluid pumpedStart-up ShutdownDensity of fluid pumped Switching frequencyReturning to service after storage Minimum flowsPump Multitec Servicing / maintenanceBearings and lubrication General instructionsCoupling Oil quality / Oil changeMotor Shaft seal Mechanical sealRadial suction nozzle Dismantling the bearingsDismantling the non-drive-end bearings Plain bearing Axial suction nozzleGrease lubrication Grease lubrication figsOil lubrication with lip seal fig Oil lubrication with labyrinth seal figReplacing the shaft protecting sleeve Removing a double-acting mechanical seal With the rules of sound engineering practice ReassemblyDismantling the hydraulic system Intermediate bearing bush Intermediate bearing diffuserSeals Gland packing Reassembly of hydraulic systemStuffing box housing Leakage at the mechanical seal Mechanical sealsHorizontal baseplate-mounted pump units Sealing elementsTightening the shaft nuts on Multitec pumps Rolling element bearing sizes Grease-lubricated bearings Fixed bearingMTC 100/125/150 Radial bearing Temperature of the rolling element bearingsRe-adjusting the clearance gaps Maximum clearance gaps Installation and returning to serviceMultitec Trouble-shooting Pump sizes 32 to General assembly drawingPump sizes 100, 125 Close-coupled pump up to pump sizeRadial suction nozzle Vertical design Pump sizes 32, 50Pump sizes 125 529 List of componentsDescription 525.1/2/4 Spacer sleeveBild Achtung AttenzionKSB Aktiengesellschaft

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