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Series MNKA bearing pedestal assembly 4 

Page 10

 

 
 

9250-003-en 

Revision 01 

TM 10458

 

Published 06/2022 

Product description 

The  housing  dimensions,  nominal  outputs  and 
technical  requirements  of  the  MNKA  bearing 
pedestal assembly 4 comply with ASME B73.3M, 
ISO 15783 / DIN ISO 5199.  

The  sectional  drawing  shows  the  design  of  the 
pump. See 

section 10.1

All  components  that  come  into  contact  with  the 
pumped medium are either encased in plastic or 
made of other resistant materials, e.g. silicon car-
bide. 

Housing 

100

  is  made  of  metallic  plating  and  a 

plastic liner. 

Bearing  bushes 

545

  and  axial  bearing  washers 

314 

are secured against torsion in the plain bear-

ing pedestal.  

Bearing  sleeve 

529/1

  is secured  against rotation 

in the impeller or 

529/2

 in the pump rotor.  

Can 

159

 is made of high-strength CFRP (carbon 

fiber  composite).  This  is  protected  against  the 
pumped  medium  by  can  insert 

158

  made  of  re-

sistant plastic. 

Plain bearing pedestal 

339

 separates the hydrau-

lic  part  of  the  pump  from  the  can  area.  Both 
spaces  are  connected  by  flushing  holes  in  the 
plain bearing pedestal, creating an internal flush-
ing  circuit  due  to  the  pressure  differences.  This 
serves to flush or cool the plain bearing. 

Oil bath lubrication only: 

Bearing pedestal 

330

 contains radial ball bearings 

321/1  and  321/2, 

which  are  lubricated  by  an  oil 

bath. The oil bath is sealed by shaft seals 

421/1 

and 421/2 

and 

412/1

 O-ring. 

 
Special designs: 

  A vacuum-tight can unit is created by bonding 

the can to the can insert. 

The can chamber is also vented and drained via 
the holes in the plain bearing pedestal.  
Additional  information  can  be  found  in  the 
brochure. 
 

Setup/installation 

5.1  Safety regulations 

 

Devices  that  are  operated  in  poten-
tially  explosive  areas  must  comply 
with  the  explosion  protection  regula-
tions. 

 

 

People  with  pacemakers  are  at  risk 
from  the  strong  magnetic  field  of  the 
magnetic  coupling.  Remaining  at  a 
distance of less than 500 mm from the 
pump can be potentially fatal for them. 

 

5.2  Pump/unit setup 

The structural layout must be prepared according 
to the dimensions of the installation plan. 

Installation  method:  On  poured  base  plate  and 
solid foundation 

  Align the base plate on the ground foundation. 

  Insert  the  foundation  bolts  and  under  fill  the 

base plate. 

  Only tighten the foundation screws evenly and 

firmly after the mortar has set. 

 

If additional installations are mounted, 
the stability of the entire unit must be 
checked when it is installed without a 
foundation. 

 

5.3  Aligning the pump

cou-

pling

motor 

 

The  following  is  for  general  infor-
mation purposes. Special instructions 
for  the  coupling  and  motor  manufac-
turer must be observed. 

After  fixing  the  base  plate  to  the  foundation  and 
connecting  the  piping,  the  alignment  of  the 
coupling  must  be  carefully  checked  and,  if 
necessary, the unit must be readjusted on the mo-
tor. 

  A coupling check and possible re-alignment is 

required even if the pump and motor are sup-
plied and aligned on a common base plate. 

  Before  starting  the  alignment,  loosen  support 

bracket 

183

 and then tighten it stress-free. 

  The pump must be aligned horizontally (on the 

shaft / discharge nozzle) in all directions with 
the aid of a spirit level (permissible position de-
viation max. 0.2 mm/m). 

  A  distance  depending  on  the  coupling  used 

must  be maintained  between  the  pump  shaft 
and the motor shaft. See installation plan. 

  Place supports in the immediate vicinity of the 

foundation / base plate screw connection. 

 

Ensure that the unit cannot be started 
up during work if a coupling guard is not 
attached.

 

Содержание MNKA Series

Страница 1: ...rt installation operation and maintenance Subject to change without prior notice Reprinting is generally permitted provided that the source is credited Richter Chemie Technik GmbH 9250 003 en Revision...

Страница 2: ...tion 13 6 Commissioning shutdown 14 6 1 First commissioning 14 6 1 1 Filling the pump housing 14 6 1 2 Startup 14 6 2 Operating limits 14 6 2 1 Abrasive media 14 6 2 2 Minimum maximum flow rate 14 6 3...

Страница 3: ...6 0 Fax 49 2152 146 190 E mail richter info idexcorp com Internet http www richter ct com Authorized representative in accordance with EC Machinery Directive 2006 42 EC Gregor Kleining Designation Sin...

Страница 4: ...0 4 x M16 270 30 3 80 8 x M16 220 25 4 100 8 x M16 310 35 6 150 8 x M20 620 70 Flanges according to ASME drilled according to DIN ISO PN25 DN Number x size Tightening torque inch mm DIN ISO in lb Nm 1...

Страница 5: ...machine system Failure of electronic devices and measuring in struments due to magnetic fields Danger to persons and their personal property from magnetic fields Danger to persons from electrical mech...

Страница 6: ...he unit described in the operating instructions See section 6 3 Pumps that convey media harmful to health must be decontaminated All safety and protective facilities are to be reinstalled and made fun...

Страница 7: ...r for other attachments and a corresponding marking must be present Example of the marking on the pump part When mounting the pump with non Ex components e g motor shaft coupling it is recommended to...

Страница 8: ...s no restrictions T4 is only valid for operation up to 1750 min 1 2 The can material is listed in the data sheet 3 If the temperature of the pumped liquid exceeds 180 C the ATEX approval becomes perma...

Страница 9: ...erature as possible Elastomers must be protected against UV radiation As a general rule do not exceed a storage period of 10 years For elastomer made of NBR the per missible storage period is 4 years...

Страница 10: ...y regulations Devices that are operated in poten tially explosive areas must comply with the explosion protection regula tions People with pacemakers are at risk from the strong magnetic field of the...

Страница 11: ...NPSHA present in the system should be at least 1 64 ft 0 5 m greater than the NPSHR required for the pump Otherwise a drop in pressure head cavitation or even pump failure will occur 5 4 2 Nozzle load...

Страница 12: ...on of the pump at the oper ating point is specified in the data sheet or factory certificate If the operating point is not known when the pump is delivered the power requirement can be taken from the...

Страница 13: ...red that the coupling guard used is either made of non sparking material or fulfills the im pact resistance test required by EN 13463 without impairment Richter offers both variants The operator must...

Страница 14: ...rge valve Monitor the venting process until no air but only liquid emerges Turn the drive shaft at the coupling a few times Monitor the venting process again until no more air emerges Close the discha...

Страница 15: ...the unit In terms of explosion protection potential ignition sources overheating electrostatic and induced charges mechanical and electrical sparks can result from these improper methods of operation...

Страница 16: ...7 2 2 Oil bath lubrication We recommend a mineral oil with the following characteristics for an expected bearing pedestal temperature of up to 158 F 70 C Viscosity index Approx 85 Kinematic viscosity...

Страница 17: ...Hold the individual parts of the magnetic couplings firmly or secure them Otherwise they could be attracted for example by a vice Risk of accident People with an artificial pacemaker Keep torso at a...

Страница 18: ...e because the can insert and can are bonded together 7 6 2 Dismantling the drive unit and long life lubrication system Remove socket head screw 914 5 with toothed lock washer 934 4 and pull off the pu...

Страница 19: ...2 onto drive shaft 213 Slide the drive shaft unit into bearing pedestal 330 fit the wave spring washer 953 1 and the rear bearing cover 361 and tighten all components using the cap screws 914 6 Tor q...

Страница 20: ...drive shaft 230 Apply two drops of Loctite 638 green to the thread of impeller shaft 230 apply FDA compliant grease to the fits e g Rivolta F L G GT 2 Mount plain bearing pedestal 339 and bearing bush...

Страница 21: ...ing bush 545 x of plain bearing pedestal 339 Lift plain bearing pedestal 339 together with im peller 230 using the 3 strand sling chain and make sure that the square engages in the seat of plain beari...

Страница 22: ...Series MNKA bearing pedestal assembly 4 Page 22 9250 003 en Revision 01 TM 10458 Published 06 2022 Lower bearing pedestal 339 together with impeller 230 above pump rotor 859...

Страница 23: ...r pyramid on the threaded rods and an open end wrench size 13 press the drive unit into the lantern chamber In the process turn the threaded rods evenly in alternation Attention Magnetic forces Risk o...

Страница 24: ...t and insert it into the holder If the oil level still drops too far add oil to the oil level controller again 7 9 Tests The pumps are tested with water at the manufacturer s The measured operating da...

Страница 25: ...o low or the NPSHR too high Are the pipe resistances too high Is the viscosity too high Is the direction of rotation correct Is the speed too low or the impeller diameter too small Are pump parts worn...

Страница 26: ...Series MNKA bearing pedestal assembly 4 Page 26 9250 003 en Revision 01 TM 10458 Published 06 2022 9 Exploded view drawing 9 1 Long life lubrication...

Страница 27: ...Series MNKA bearing pedestal assembly 4 Page 27 9250 003 en Revision 01 TM 10458 Published 06 2022 9 2 Oil bath lubrication...

Страница 28: ...Plain bearing gasket 412 x O ring 415 1 Centering gasket 509 1 Intermediate ring 523 x Shaft sleeve 529 x Bearing sleeve 545 x Bearing bush 554 x Washer 557 2 Contact washer 858 Drive rotor 859 Pump...

Страница 29: ...Series MNKA bearing pedestal assembly 4 Page 29 9250 003 en Revision 01 TM 10458 Published 06 2022 10 2 Sectional drawing...

Страница 30: ...Series MNKA bearing pedestal assembly 4 Page 30 9250 003 en Revision 01 TM 10458 Published 06 2022 10 3 Sectional drawing of oil bath lubrication...

Страница 31: ...sing them to expand radially This creates a frictional connection between the device and the plain bearing bush that is gentle on the material The bearing bush can now be removed by axial impact on th...

Страница 32: ...To unscrew the impeller we recommend the use of the universal impeller wrench This tool can be used for all impeller diameters from 230 mm to 350 mm The tool consists of a heavy duty band wrench whic...

Страница 33: ...hter Chemie Technik GmbH Baureihe Series Serie Ausf hrung Magnetkupplungspumpe MNKA Design Magnet drive pump Group 4 Einsatzgrenzen operating limits 1 Baugr e size MNKA 6x4x13 MNKA 4x3x13 MNKA 3x2x13...

Страница 34: ...lungspumpe MNKA Design Magnet drive pump Group 4 Construction Pompe entra nement magn tique 9250 00 3046 4 00 TM 10432 31 03 22 2 2 1 2 3 4 Standard Class 150 version Standard Class 300 version Except...

Страница 35: ......

Страница 36: ......

Страница 37: ...ls The laws are such as the Health and Safety at Work Act ArbSt ttV the Ordinance on Harzadous Substances GefStoffV BIOSTOFFV the procedures for the prevention of accidents as well as regulations to e...

Страница 38: ...tamination of the pumps valves and component sent in for repair On the basis of this information for the contractor is it possible to meet the necessary preventive action during the execution of the r...

Страница 39: ...ch cleaning method radioactive3 1 if no then forward to D other pollutant 2 Aggregates which are contaminated with microbiological or explosive substances are only accepted with documented evidence of...

Страница 40: ...ai Info idexcorp com Internet www richter ct com Richter Pumps Valves Inc 406 State Street Cedar Falls 50613 IA USA Tel 1 319 268 8038 Fax 1 319 273 8157 Email RichterCedarFalls Info idexcorp com Inte...

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