Richter MNK Series - Manual (Page 2)

Series MNK
Page 2
9230-050-en Revision 11
TM 7903 Edition 07/2010
List of Contents
List of Contents ........................................ 2
Relevant documents ................................. 3
1 Technical data ...................................... 3
1.1 Tightening torques ....................................... 4
1.2 Type plate, dry-running, ATEX-and housing
markings ...................................................... 4
1.3 Spare parts .................................................. 4
2 Notes on safety .................................... 5
2.1 Intended use ................................................ 5
2.2 For the customer/operator ........................... 6
2.3 For maintenance ......................................... 6
2.4 Conversion work and production of spare
parts by the customer .................................. 6
2.5 Improper operation ...................................... 6
2.6 Special requirements for explosion protection
................................................................. 6
2.6.1 Filling the unit ................................................... 6
2.6.2 Special operating conditions ............................ 7
2.6.3 Chargeable liquids ........................................... 7
2.6.4 Identification ..................................................... 7
2.6.5 Check of the direction of rotation ..................... 7
2.6.6 Mode of operation of the pump ........................ 7
2.6.7 Temperature limits ........................................... 8
2.6.8 Maintenance ..................................................... 8
2.6.9 Electric peripheral equipment ........................... 8
3 Transport, storage and disposal ........ 9
3.1 Return consignments .................................. 9
3.2 Disposal ....................................................... 9
4 Product description ........................... 10
5 Installation .......................................... 10
5.1 Safety regulations ...................................... 10
5.2 Installation of pump / unit .......................... 10
5.3 Alignment of pump-coupling-motor ........... 10
5.4 Piping......................................................... 11
5.4.1 Nominal size ................................................... 11
5.4.2 Nozzle loads ................................................... 11
5.4.3 Suction line ..................................................... 11
5.4.4 Supply lines .................................................... 11
5.4.5 Discharge line ................................................ 11
5.4.6 Venting and draining ...................................... 11
5.5 Pipe fittings ................................................ 12
5.6 Monitoring facilities .................................... 12
5.7 Drive .......................................................... 12
5.8 Coupling .................................................... 12
5.9 Final check ................................................ 13
5.10 Coupling guard .......................................... 13
5.11 Electric connection .................................... 13
6 Commissioning/Shutdown ................ 13
6.1 Initial commissioning ................................. 13
6.1.1 Filling the pump housing ................................ 13
6.1.2 Start-up ........................................................... 13
6.2 Operating limits ......................................... 14
6.2.1 Abrasive media............................................... 14
6.2.2 Min./max. flow rate ......................................... 14
6.3 Shutdown .................................................. 14
6.4 Restarting .................................................. 14
6.5 Improper operations and their consequences
(examples) ................................................ 14
7 Maintenance ....................................... 15
7.1 Screw connections of the housing ............ 15
7.2 Bearing pedestal ....................................... 15
7.2.1 Long life grease lubrication ............................ 15
7.2.2 Oil bath lubrication.......................................... 15
7.3 Cleaning .................................................... 16
7.4 Stand-by pumps ........................................ 16
7.5 Notes on dismantling ................................ 16
7.5.1 Protective clothing .......................................... 16
7.5.2 Magnetic fields ............................................... 16
7.6 Dismantling ............................................... 16
7.6.1 Dismantling the slide-in unit ........................... 17
7.6.2 Dismantling the drive unit Long life grease
lubrication ....................................................... 17
7.6.3 Changing the radial ball bearings Long life
grease lubrication ........................................... 17
7.6.4 Dismantling the drive unit Oil bath lubrication17
7.6.5 Changing the radial ball bearings Oil bath
lubrication ....................................................... 18
7.7 Notes on assembly ................................... 18
7.8 Assembly ................................................... 18
7.8.1 Assembly of drive unit Long life grease
lubrication ....................................................... 18
7.8.2 Assembly of drive unit Oil bath lubrication .... 18
7.8.3 Perform trial assembly of plain bearing pedestal
with impeller, inner magnet assembly and plain
bearings .......................................................... 19
7.8.4 Determine thicknesses S
1
and S
2
of the distance
washers 551. .................................................. 19
7.8.5 Final assembly ............................................... 19
7.8.6 Fill bearing pedestal with oil ........................... 20
7.9 Tests ......................................................... 20
8 Malfunctions ....................................... 21
9 Sectional drawing .............................. 22
9.1 Legend ...................................................... 22
9.2 MNK with grease lubrication ..................... 23
9.3 MNK with oil bath lubrication ..................... 24
10 Assembly aids .................................... 25
10.1 Boring templates ....................................... 25
10.2 Installation device for plain bearings ......... 25
10.3 Pull-off device for plain bearing bushes .... 25