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Disassembly & assembly instructions single stage centrifugal pumps 

TC… - MCU-… 

2 

INTRODUCTION 

 
These  instructions  are  for  the  maintenance  personnel  for  maintenance  and/or  repair  of  the  indicated  pump  series. 
Disassembly and assembly require expertise and knowledge of the procedures, therefore the work must be carried out 
by  qualified  personnel.  These  instructions  must  be  carefully  read  and  understood  in  conjunction  with  the  section 
drawings  and  tables  contained  in  the  manual  and  enclosed,  prior  to  attempt  any  work  on  the  pumps.  For  safety, 
installation  and  maintenance  instructions  consult  the  manual  “INSTALLATION  &  OPERATING  INSTRUCTIONS  FOR 
CENTRIFUGAL  PUMPS”  attached  to  the  pump  at  time  of  shipment.  Consult  also  any  other  attached  instructions  for 
accessories and/or components included with the pumps such as mechanical seals, heat exchangers, flushing systems, 
instrumentation, etc. Before operating or working on the pump it is recommended to adopt safety precautions  wearing 
safety attire (hat, glasses, gloves, shoes, etc.) and have ready the necessary tools required for the work to be done. 
Do not subject the pump of its components to sudden mechanical impacts and /or distortions. 
Do not damage or scratch the sealing  faces. Pay particular attention not to damage flat gaskets and O-Rings. Careful 
not to leave foreign matters such as moults, screws, washers, rags, etc. in the pump. 
When  requesting  spare  parts  or  technical  information  for  the  pump, always  quote  the  pump  model  number  and  serial 
number which is printed on the pump nameplate: therefore it is recommended not to remove the pump nameplate or, in 
case this action will be necessary, write the serial number on the pump (for example on the flange). 
Should  additional  information  be  required,  please  do  not  hesitate  to  contact  POMPETRAVAINI  or  the  closest 
representative. Should there be any difficulties in repairing the pump, it is recommended to send the pump for repair to 
POMPETRAVAINI or the local authorised representative. 
Pump  repairs  and/or  service  carried  out  by  customer  or  unauthorised  personnel  are  not  guaranteed  by 
POMPETRAVAINI

 

or by its subsidiaries. 

Note:  Pump parts list identify all pump components by item number (VDMA) in connection with the sectional drawings. 

All  drawings  are  for  reference  purpose  and  not  are  certified  for  construction,  however  should  additional 
information be required, contact POMPETRAVAINI or its closest representative.

 

 
 

INDEX 

 

1  -  Steps to be followed prior to pump disassembly 
2  -  Disassembly and assembly of pumps series TCH - TCT - TCA & MCU-CH / CHT / CHA group 1 - 2 - 3 
 

2.1 -  Disassembly 

 

2.2 -  Assembly 

3  -  Disassembly and assembly of pumps series MCU-CH group 3 NS and 4 NS 
 

3.1 -  Disassembly 

 

3.2 -  Assembly 

4  -  Disassembly and assembly of pumps series TCD and MCU-OD 
 

4.1 -  Disassembly  

 

4.2 -  Assembly 

5  -  Mechanical seals assembly 
 

5.1 -  Pumps series TCH - TCT - TCA - MCU-CH - MCU-CHT - MCU-CHA 

 

5.2 -  Pumps series TCD - TCD/SP - MCU-OD - MCU-OD/SP 

6  -  Replacing the packing rings 
7  -  Spare parts 
8  -  Section drawings and typical options 
9  -  Nomenclature of pump parts 
10 -  Engineering tables 

 
 
 

 

The liquids handled by the pumps and also their parts could be potentially dangerous for persons and 
environment:  provide  their  eventual  disposal  in  conformity  with  the  laws  into  force  and  a  proper 
environment management.

 

 
 

 

The  present  manual  is  not  assigned  for  pumps  subjected  to the  ATEX  94/9/CE  directive. In case  the 
pump is assigned in environments  subjected to the application ATEX 99/92/CE directive or in case the 
pump is provided with a nameplate indicating the ATEX stamp, it strictly forbidden proceed to start up 
the pumps but necessary to consult POMPETRAVAINI for clarifications. 
For pumps subjected to the ATEX 94/9/CE directive it is available a dedicated integrative manual.

 

 
 
 

In  preparing  this  manual,  every  possible  effort  has  been  made  to  help the  customer  and  operator  with  the  proper  installation  and  operation  of  the 
pump. Should you find errors, misunderstandings or discrepancies please do not hesitate to bring them to our attention. 

Содержание MCU Series

Страница 1: ... Rev 2 0_10 2010 DISASSEMBLY ASSEMBLY INSTRUCTIONS SINGLE STAGE CENTRIFUGAL PUMPS TC MCU ...

Страница 2: ...nded to send the pump for repair to POMPETRAVAINI or the local authorised representative Pump repairs and or service carried out by customer or unauthorised personnel are not guaranteed by POMPETRAVAINI or by its subsidiaries Note Pump parts list identify all pump components by item number VDMA in connection with the sectional drawings All drawings are for reference purpose and not are certified f...

Страница 3: ...e studs VDMA 902 2 this allows removal of the rotor from the pump casing Pumps with vortex impeller series TCT and MCU CHT are fitted with spacer ring VDMA 110 which must be removed from the casing or from the casing cover Remove the impeller nut VDMA 922 for cast iron construction or VDMA 925 for stainless steel construction so that the impeller VDMA 230 can then be removed from the shaft VDMA 21...

Страница 4: ...up 3 NS and 4 NS 3 1 DISASSEMBLY See the section drawings of fig 12 13 14 of chapter 8 Drain the oil from the bearing frame by removing the drain plug VDMA 903 4 Remove the bolts from the studs VDMA 902 2 so that the rotor may be removed from the pump Place the rotor assembly in the vertical position with the drive end toward the bottom Loosen the impeller nut VDMA 925 and remove the impeller VDMA...

Страница 5: ...ever that the primary dimensions must be the same and the material of construction must be suitable with the liquid handled For more information and the assembly dimensions pls contact POMPETRAVAINI or its closest representative Clean the stationary seal element removing encrustation oxidation and deposit of the flushing liquid Lubricate the seat and the elastomers of the stationary seat with oil ...

Страница 6: ...umps series TCD TCD SP MCU OD MCU OD SP Clean the stationary seal element of any encrustations oxidation or residues from the handled liquid Lubricate the seal cavity and the elastomers with a compatible light oil Place the bearing frame VDMA 330 in the vertical position with the shaft drive end at the bottom in the case of pump SP the bearing frame should have attached the extension flange VDMA 1...

Страница 7: ... careful not to disturb the packing rings while inserting the shaft sleeve on to the shaft Alternatively assembly first the pump and then the stuffing box as discussed above 7 SPARE PARTS When ordering the pump it is good practice to also order the necessary spare parts especially when there are no stand by pumps in the installation This will minimise unnecessary down times in the event of pump fa...

Страница 8: ...1 400 2 400 3 904 903 1 230 485 940 2 925 922 433 2 902 2 902 1 210 940 320 330 643 932 421 5 935 Fig 2 Pump series TCH gr 1 2 design 1 C Single mechanical seal NOTE VDMA 925 applies only to stainless steel design 433 2 323 507 421 1 360 1 400 2 901 1 903 4 183 330 904 1 161 524 561 914 935 360 2 210 940 421 643 932 320 923 935 639 Fig 3 Option with oversized bearing frame design 1X ...

Страница 9: ...39 932 507 400 4 903 4 323 210 183 901 321 400 2 421 5 161 360 1 421 4 914 940 923 360 2 932 3 643 935 330 902 1 485 940 2 Fig 4 Pump series TCH gr 3 design 1 C Single mechanical seal 230 135 900 1 135 2 161 102 900 2 110 902 2 904 1 400 1 230 Fig 5 Pump series TCA MCU CHA Impeller fully open Fig 6 Pump series TCT MCU CHT Vortex impeller ...

Страница 10: ...04 901 1 183 935 903 4 902 901 730 502 903 1 400 1 161 412 2 321 471 165 485 400 5 433 Fig 7 Pump series MCU CH gr 3 design R Single mechanical seal NOTE VDMA 925 applies only to stainless steel design 485 471 412 3 412 2 161 902 735 730 400 5 165 433 2 458 452 902 461 Fig 8 Option for design 1 R Single and cooled mechanical seal Fig 9 Option for design 1 B Packed and cooled stuffing box ...

Страница 11: ...eal back to back Fig 11 Option for design 1 R2 Cooled and double mechanical seal in series 903 3 102 230 400 1 903 2 161 902 2 471 1 904 400 3 940 2 925 163 421 1 210 400 6 914 502 1 412 2 903 1 902 507 731 4 400 4 903 4 701 350 183 639 901 1 400 2 360 2 320 923 940 400 7 485 471 524 901 2 323 932 3 903 4 421 901 433 2 400 5 412 4 Fig 12 Pump series MCU CH group 3 NS and 4 NS design R Single mecha...

Страница 12: ...ig 13 Option for design RR Double mechanical seal back to back Fig 14 Option for design B Packed stuffing box 903 4 412 505 433 2 902 900 1 901 2 502 1 940 2 903 1 904 230 643 922 320 901 932 940 210 360 2 183 400 2 901 1 421 5 330 320 2 505 2 412 1 903 932 1 400 1 102 903 3 167 163 Fig 15 Pump series TCD and MCU OD ...

Страница 13: ...63 Casing cover 542 Mechanical seal bush 165 Cooling cover 561 Elastic pin 167 Cooling plate 637 Oil filling plug 183 Support foot 639 Oil sight gauge 184 Extension flange 643 Oil dipstick 210 Shaft 672 Cock 230 Impeller 701 Piping 320 Ball bearing 730 Fitting 321 Ball bearing 731 Fitting 323 Roller bearing 735 Nipple 330 Bearing frame 900 Screw 350 Bearing frame 901 Screw 360 Bearing cover 902 St...

Страница 14: ...305 25x62x17 Seal side N 1 NU207 35x72x17 Drive side N 2 7207 35x72x17 N 2 AS25357 25x35x7 Seal side N 1 AS35477 35x47x7 Drive side N 1 AS30527 30x52x7 On sleeve Ø30 On shaft Ø24 On sleeve Ø35 On shaft Ø30 Di 30 De 51 H 10 N 4 Di 35 De 51 H 8 N 4 0 45 25 160 25 200 32 125 32 160 32 200 40 125 40 160 40 200 50 125 50 160 50 200 Group 2 32 250 N 2 6307 35x80x21 Seal side N 1 NU309 45x100x25 Drive si...

Страница 15: ...RINGS TYPE RADIAL SEAL RINGS TYPE for SHAFT MECHANICAL SEAL Ø mm PACKING RINGS Dim x N rings mm OIL KG Group 1 25 125 N 2 6305 25x62x17 N 2 AS25357 25x35x7 On sleeve Ø30 On shaft Ø24 Di 30 De 51 H 10 N 4 0 45 25 160 25 200 32 125 32 160 32 200 40 125 40 160 40 200 50 125 50 160 50 200 Group 2 32 250 N 2 6307 35x80x21 N 2 AS35477 35x47x7 On sleeve Ø45 On shaft Ø30 Di 45 De 70 H 12 N 4 0 90 40 250 4...

Страница 16: ...9 0 74 0 89 6 5 40 315 95 110 16 0 44 0 59 0 74 0 89 8 50 125 95 110 16 0 34 0 49 0 44 0 59 16 50 160 95 110 16 0 34 0 49 0 44 0 59 13 50 200 95 110 16 0 34 0 49 0 44 0 59 9 50 250 105 120 16 0 44 0 59 0 74 0 89 5 50 315 105 120 16 0 44 0 59 0 74 0 89 7 5 65 125 105 120 16 0 44 0 59 0 74 0 89 20 3 65 160 120 135 16 0 44 0 59 0 74 0 89 18 65 200 120 135 16 0 44 0 59 0 74 0 89 14 65 250 120 135 16 0...

Страница 17: ...Disassembly assembly instructions single stage centrifugal pumps TC MCU 17 Blank page ...

Страница 18: ...Disassembly assembly instructions single stage centrifugal pumps TC MCU 18 Blank page ...

Страница 19: ...us Corrosive Irritant Malodorous Clean Dirty With suspended parts Spec Gravity Viscosity PH TOTAL WEIGHT KGs MAXIMUM DIMENSIONS X cm Y cm Z cm NOISE measured at 1 m Pressure dB A Power dB A INSTALLATION SERVICE Inside Outside Continuous Intermittent Explosive area MOTOR type Frame No Poles No Revolutions RPM Absorbed power Amp Installed Power kW HP Frequency Hz Supply Volt Enclosure IP Insulation ...

Страница 20: ...FUGAL PUMPS LIQUID RING VACUUM PUMPS LIQUID RING COMPRESSORS PACKAGE VACUUM UNITS WITH PARTIAL OR TOTAL SERVICE LIQUID RECIRCULATION NA5 SM TCH0 GB00 PRINTED IN ITALY Smontaggio TC MCU Inglese POMPETRAVAINI S continuing research results in product improvement therefore any specifications may be subject to change without notice S p A 20022 CASTANO PRIMO Milano ITALY Via per Turbigo 44 Zona Industri...

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