Multitech 1777.8/7-10 G3 Operating Instructions Manual Download Page 1

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Multitec

Operating instructions

1777.8/

-10

High-pressure pumps in

ring-section design

Works No.:

__________________________________

Type series:

__________________________________

These operating instructions contain fundamental
information and precautionary notes. Please read

the manual thoroughly prior to installation of unit,
connection to the power supply and commissioning. It is
imperative to comply with all other operating instructions
referring to components of this unit.

This manual shall always be kept close to the unit’s

location of operation or directly on the pump set.

Summary of Contents for 1777.8/7-10 G3

Page 1: ...ating instructions contain fundamental information and precautionary notes Please read the manual thoroughly prior to installation of unit connection to the power supply and commissioning It is imperative to comply with all other operating instructions referring to components of this unit This manual shall always be kept close to the unit s location of operation or directly on the pump set ...

Page 2: ...tion to power supply 12 6 1 5 Start up 12 6 1 6 Shutdown 12 6 1 7 Final check 12 6 2 Operating limits 12 6 2 1 Temperature of fluid pumped 12 6 2 2 Switching frequency 13 6 2 3 Minimum flows 13 6 2 4 Density of fluid pumped 13 6 3 Shutdown storage preservation 13 Page 6 3 1 The unit pump remains installed periodic check of operation 13 6 3 2 The pump is removed from the pipe and stored 13 6 4 Retu...

Page 3: ...anufacture of spare parts by customer 2 7 5 Non compliance with safety instructions 2 3 4 Operating limits 6 2 12 Personnel qualification and training 2 2 4 Preparations for dismantling 7 3 2 15 Priming the pump and checks to be carried out 6 1 2 11 Re adjusting the clearance gaps 7 5 25 Reassembly 7 4 20 Section Page Reassembly of hydraulic system 7 4 2 21 Recommended spare parts stock for 2 year...

Page 4: ...1 93 or country specific guidelines 2 1 Marking of instructions in the manual The safety instructions contained in this manual whose non observance might cause hazards to persons are specially marked with the general hazard sign namely safety sign as per ISO 7000 0434 The electrical danger warning sign is safety sign as per IEC 417 5036 The word is used to introduce safety instructions whose non o...

Page 5: ...ansport storage 3 1 Transport Handling Transport of the unit requires proper preparation and handling Never use the motor eyebolt for lifting the unit If the pump unit slips out of the suspension arrangement it may cause personal injury and damage to property Do not use lifting gear which may damage the pump e g no chains Fig 1 Transport of pump only Fig 2 Transport of pump unit For transporting t...

Page 6: ...ssure centrifugal pump in long coupled baseplate mounted or close coupled design horizontal or vertical version axial or radial suction nozzle Radial suction and discharge nozzles can be turned by 90 Bearings Radial bearings are silicon carbide plain bearings not on versions C and D self aligning Plain bearings lubricated by fluid handled Fixed bearings are rolling element bearings grease or oil l...

Page 7: ...equivalent standards Make sure that the concrete foundation has set firmly before placing the unit on it Its surface shall be truly horizontal and even 5 3 Installing the pump unit Before placing the baseplate on the foundation make sure that the concrete foundation is clean and smooth The complete pump unit must be aligned horizontally with the help of a precision spirit level It is imperative th...

Page 8: ...rques Tightening torque MTC Thread Strength Drive end Non drive 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 ...

Page 9: ...mp axis Direction of moments X around the horizontal axis parallel to the pump axis MY around the vertical nozzle axis X around the horizontal axis at a right angle to the pump axis Suction and discharge nozzle are regarded separately Max permissible pipeline forces material codes 10 11 12 13 Nom nozzle diameter DN 32 50 65 80 100 125 150 200 250 Vertical nozzle at a right angle to the shaft N Fx ...

Page 10: ...otor check whether thewires are firmly connected at the terminals and re tighten any loose wires n configuration low voltage Fig 12 Connection diagram for three phase motors n configuration Y configuration high voltage Fig 13 Connection diagram for three phase motors Y configuration 5 5 2 Setting the time relay Make sure that in the case of three phase motors with star delta starting method switch...

Page 11: ...ver see section 7 2 2 6 1 2 Priming the pump and checks to be carried out Before each start up the pump and the suction line must be completely vented and primed with the fluid to be pumped The pump has several plugged holes for venting adequate venting devices can be used in the pipelines The shut off valve in the suction or feed line must be fully open Fully open all auxiliary connections provid...

Page 12: ...p regularly for at least 5 minutes see also 6 3 fire fighting pumps at least once a month drinking water pumps at least once in 48 hours stand by pumps at least once a week It is better to operate the pumps by alternating daily During these periodic check runs also check the integrity and proper functioning of the auxiliary feed lines 6 1 7 Final check After the pump has been primed it must be eas...

Page 13: ...umps in material variants 10 13 20 and 21 cast iron variants particularly if the pumps are handling aggressive water qualities high oxygen content In such cases the pump should remain filled and the operation check run should be performed at least every other day instead of once a month or once every 3 months see also 6 1 5 In the event of frost and or prolonged shutdowns the pump must be drained ...

Page 14: ... 7 2 2 Bearings and lubrication On grease lubricated units the rolling element bearings of the MTC32 and the non drive end rolling element bearings of the MTC50 and MTC65 in design C and D are lubricated for life and do not require re lubrication For this reason no lubricating nip ples are provided on the bearing brackets Pump Depending on the pump version the rolling element bearings are either g...

Page 15: ...drops approx 7 l H 7 2 4 Coupling If the flexible coupling elements begin to show signs of wear they must be replaced in due time and pump motor alignment must be checked 7 3 Dismantling If you need additional information or instructions please contact KSB s customer service 7 3 1 General instructions Drainage Cleaning If the pump was used for handling liquids posing health hazards see to it that ...

Page 16: ... its two O rings 412 2 N B Anti rotation pin 561 1 remains in position Radial suction nozzle Fig 18 Undo bolts 901 3 and remove cover 160 1 with O ring 412 3 and bearing cartridge 381 with O rings 412 2 Remove circlip 932 1 shaft in C45 or bolt 901 2 and disc 550 7 shaft in 1 4021 1 4462 Pull out bearing sleeve 529 Remove disc 550 6 N B Anti rotation pin 561 1 remains in position Fig 19 Rolling el...

Page 17: ...t together with washer 550 10 and O ring 412 12 Remove bearing cover 360 2 The rotating unit is adjusted axially by means of spacers 551 1 When reassembling the pump after partial dismantling bearing or seal replacement the same spacer discs 551 1 must be mounted on the bearing side to reproduce the original rotor adjustment When dismantling keywayed nut 920 6 all relevant positions such as sequen...

Page 18: ...be used for leverage Remove balance drum 59 4 disc 550 3 and sleeve 524 with a puller engaged in the threaded holes on the drum This is not possible on pumps without balance drum Fig 30 Pump design without balance drum Fig 31 7 3 5 Dismantling the mechanical seal 7 3 5 1 Dismantling the mechanical seal Remove the bearing as described in sections 7 3 3 1 and 7 3 3 2 On grease lubricated pumps pull ...

Page 19: ... secure fan shaft 87 5 and fan impeller 831 1 with Loctite 222 Remove support 59 7 Remove the bearing as described in section 7 3 3 1 as well as spacer sleeve 525 1 and bearing housing 350 1 Remove the mechanical seal as described above Fig 34 7 3 5 3 Removing a water cooled mechanical seal seal code 64 Fig 35 Note This mechanical seal design is used for temperatures from 140 to 200 C and sizes 12...

Page 20: ...1 2 2 1 1 2 1 2 1 1 2 2 2 8 8 8 2 2 2 2 2 1 2 1 2 2 2 2 2 2 8 8 8 3 2 3 3 2 2 3 2 2 2 2 3 3 3 9 9 9 3 3 3 3 3 2 3 2 3 3 3 4 4 4 12 12 12 4 4 4 4 4 3 4 3 30 30 30 50 50 50 150 150 150 50 50 50 50 50 30 50 30 For shaft seal codes 61 62 63 and 64 with mechanical seal 433 523 Mechanical seal compl 3 Shaft sleeve set 2 2 3 2 4 2 5 3 6 3 7 4 90 50 For oil lubrication 421 4 Lip seal 4 8 8 8 9 12 150 423 ...

Page 21: ... 4 2 3 Fig 37 7 4 3 Seals Gland packing Before re packing thoroughly clean the packing chamber and the gland cover Packing rings must be inserted so that the cut edge of each ring is displaced by approx 90 to 120 in relation to the previous one Slip the pre stressed packing rings onto the shaft protecting sleeve press home the first packing ring with the help of the gland cover Each packing ring m...

Page 22: ...n of rotation must be observed for mechanical seals with uni directional springs Fig 39 Sealing elements Sealing elements made of EPDM must never come into contact with oil or grease Defective O rings which have sustained mechanical damage such as cuts cracks and deformation as well as changes in properties from deposits or embrittlement must be replaced Gaskets shall always be replaced by new one...

Page 23: ... 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 M 42 1 5 150 1 M 42 1 5 150 1 150 1 MTC 100 M 42x1 5 2x 50 M 42x1 5 2x 50 M 42x1 5 50 M 42x1 5 50 2x 150 2x 150 150 M 52 1 5 200 1 M 52 1 5 200 1 200 1 MTC 125 M 52x1 5 2x 60 M 52x...

Page 24: ...f the rotor is not required The correct axial position of the rotor is achieved by inserting spacer discs 551 1 to a total thickness of 1 6 mm 1 x 1 mm 3 x 0 2 mm in bearing housing 350 1 on the side of the bearing or angular contact ball bearings On the old versions the rotor is axially positioned by inserting spacer discs 551 1 on both sides of the bearing or angular contact ball bearings to a t...

Page 25: ...s only 1 0 mm if the fluid is pumped from a vessel under vacuum conditions 2 5 mm for all other operating conditions Should wider clearances be found the parts subject to wear must be replaced Note Pump performance is adversely affected by excessive clearances Losses in efficiency and discharge head will occur 7 5 2 Repairs Clearance between impeller 231 and suction casing Sizes 32 to 65 for mater...

Page 26: ...k barrier liquid pressure 2 3 Score marks or roughness on shaft protecting sleeve shaft sleeve Replace shaft protecting sleeve shaft sleeve Fit new shaft seal Vibrations during pump operation Improve suction conditions Re align the pump Re balance the impeller Increase pressure at the pump suction nozzle The unit is misaligned Re align Pump is warped or sympathetic vibrations in the piping Check p...

Page 27: ...o pump size 50 Axial suction nozzle pump size 65 and above 1 for pump models with mechanical seal only 2 pump size 65 and above 3 pump size 100 and above 4 except pump size 32 5 pump sizes 32 and 50 only 6 hydraulics 9 2 10 2 11 1 and 12 1 only 7 for variant with balance drum only Multitec 27 9 General assembly drawing ...

Page 28: ...Pump sizes 32 50 and 65 Vertical design Pump sizes 100 125 and 150 1 for pump models with mechanical seal only 2 pump size 65 and above 3 pump size 100 and above 4 except pump size 32 5 pump sizes 32 and 50 only 6 hydraulics 9 2 10 2 11 1 and 12 1 only 7 for variant with balance drum only ...

Page 29: ...nly 2 pump size 65 and above 3 pump size 100 and above 4 except pump size 32 5 pump sizes 32 and 50 only 6 hydraulics 9 2 10 2 11 1 and 12 1 only 7 for variant with balance drum only Material codes 20 21 22 23 and 30 Return of balancing line MTC 150 2 pole Version C Version B ...

Page 30: ...land packing1 471 1 2 Seal cover 500 1 Ring 502 1 2 Casing wear ring 1 520 1 2 3 4 Sleeve 1 523 1 Shaft sleeve 524 Shaft protecting sleeve 1 525 1 2 4 Spacer sleeve 1 Part No Description 529 Bearing sleeve SiC 1 540 1 3 Bush 1 550 1 2 3 4 6 8 9 10 11 Disc 1 551 1 2 Spacer disc 561 1 Grooved pin 565 Rivet 59 4 Balance drum 1 59 7 Support 636 Lubricating nipple 638 Constant level oiler 681 2 Couplin...

Page 31: ...htung Baugrößen 32 bis 65 Ausführung E Ex F Fx V Vx Bei den Motoren für die Version Ex Fx und Vx handelt es sich um Sondermotoren mit verstärkter Lagerung die nicht durch Standard Motoren ersetzt werden können Les moteurs pour les versions Ex Fx et Vx sont des moteurs spéciaux à paliers renforcés qui ne peuvent pas être remplacés par des moteurs standard The motors of versions Ex Fx and Vx are spe...

Page 32: ...0 01 06 2006 Subject to technical modification without prior notice KSB Aktiengesellschaft P O Box 1361 91253 Pegnitz Bahnhofplatz 1 91257 Pegnitz Germany Tel 49 9241 71 0 Fax 49 9241 71 1791 www ksb com Multitec ...

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