Multitech 1777.8/7-10 G3 Aligning the pump / drive Coupling guard, 100 120 Nm, 125 120 Nm

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Multitec

5.3.1Aligning the pump / drive Coupling guard

Caution In compliance with health and safety regulations the pump must not be operated without a coupling guard / a guard on the drive lantern. If the

customer specifically requests not to include a coupling guard / lantern guard in our delivery, then the operator must supply one.

Baseplate-mounted units

After fastening the baseplate on the foundation, the coupling must be thoroughly checked and the pump

set be re-aligned (at the motor), if required.

Prior to checking the alignment/realignment, loosen the pump feet and re-tighten without transmitting any stresses or strains.

Caution Coupling check and realignment must be effected even if pump and motor are supplied

completely assembled and aligned on a common baseplate.

Straight-edge

a

b

a

b

Straight-edge

Gauge

Fig. 7 Aligning the coupling with the help of a gauge and a straight-edge

Straight-edge

a

b

a

b

Straight-edge

Gauge

Fig. 8 Aligning a spacer-type coupling

The radial and axial deviation between the two coupling halves must not exceed 0.1 mm.

Caution

 

For fluid temperatures of 120￿C and higher, the

 

 

 

foot bolts holding the pump on the baseplate must

be tightened to the following torques:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tightening torque

 

MTC

Thread

Strength

Drive

 

Non-drive

 

 

 

 

 

 

 

 

end

 

end

 

 

 

 

 

 

 

 

 

32

 

M 12

4.6

30 Nm

 

15 Nm

 

 

 

 

 

 

 

 

 

50

 

M 12

4.6

30 Nm

 

15 Nm

 

 

 

 

 

 

 

 

 

65

 

M 16

4.6

60 Nm

 

30 Nm

 

 

 

 

 

 

 

 

 

100

 

M 20

4.6

120 Nm

 

60 Nm

 

 

 

 

 

 

 

 

 

125

 

M 20

4.6

120 Nm

 

60 Nm

 

 

 

 

 

 

 

 

 

150

 

M 30

4.6

450 Nm

 

200 Nm

 

 

 

 

 

 

 

 

 

 

This will avoid that any increase in pump length due to thermal expansion will lead to warping and deformation.

The increase in height of pump and drive due to thermal expansion may differ; this has to be considered when aligning the coupling of pump units handling temperatures of 100￿C and higher.

The following equation can serve as a guide to estimate by how much the motor has to be elevated in relation to the pump:

￿H [mm] = 1/100000 * (￿Tp * Hp - ￿Tm * Hm)

￿Tp

=

Temperature difference pump - ambient (￿C)

Hp

=

Height of pump axis [mm]

￿Tp

=

Temperature difference motor - ambient (￿C)

Hp

=

Height of motor axis [mm]

 

In any case, also when using this correction, the

Caution

 

 

 

coupling has to be re-aligned when the unit has

reached operating temperature.

Close-coupled pumps and vertical pumps

Alignment between the motor and the pump is ensured by the centering effect between the motor flange and the drive lantern flange. It must be easy to rotate the shaft.

Caution

For MTC V 32-65 please observe the adjusting

 

dimensions for coupling alignment (see page 31).

Final check

Re-check the alignment as described in the sections above. It must be easy to rotate the coupling by hand. Check the integrity and proper functioning of all connections.

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Contents Works No Type series High-pressure pumps in ring-section designOperating instructions 1777.8/7-10 G3 Multitec Contents Section Adjusting dimensions for coupling Multitec IndexSafety Multitec GeneralMultitec Transport, storageAccessories Description ProductMultitec Installation at site Foundation / Checks to be carried out prior to installationInstalling the pump/unit Close-coupled pumpsAligning the pump / drive Coupling guard Be tightened to the following torques Tightening torqueThread Strength Drive Non-drive End 100 120 NmConnecting the piping Max. permissible pipeline forces material codes 10, 11, 12Max. permissible pipeline forces material codes 20 to Protection against foreign matterConnection to power supply Setting the time relayVacuum balance line Checking the direction of rotationMultitec Commissioning, start-up / Shutdown Temperature of the fluid pumped Start-upShutdown Gland packingSwitching frequency Returning to service after storageMinimum flows Density of fluid pumpedMultitec Servicing / maintenance Bearings and lubricationGeneral instructions PumpOil quality / Oil change MotorShaft seal Mechanical seal CouplingDismantling the bearings Dismantling the non-drive-end bearings Plain bearingAxial suction nozzle Radial suction nozzleGrease lubrication figs Oil lubrication with lip seal figOil lubrication with labyrinth seal fig Grease lubricationReplacing the shaft protecting sleeve Removing a double-acting mechanical seal Reassembly Dismantling the hydraulic systemIntermediate bearing bush Intermediate bearing diffuser With the rules of sound engineering practiceSeals Gland packing Reassembly of hydraulic systemStuffing box housing Mechanical seals Horizontal baseplate-mounted pump unitsSealing elements Leakage at the mechanical sealTightening the shaft nuts on Multitec pumps Rolling element bearing sizes Grease-lubricated bearings Fixed bearingMTC 100/125/150 Temperature of the rolling element bearings Re-adjusting the clearance gaps Maximum clearance gapsInstallation and returning to service Radial bearingMultitec Trouble-shooting General assembly drawing Pump sizes 32 toClose-coupled pump up to pump size Radial suction nozzleVertical design Pump sizes 32, 50 Pump sizes 100, 125Pump sizes 125 List of components Description525.1/2/4 Spacer sleeve 529Achtung Attenzion BildKSB Aktiengesellschaft

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