KRAL L Series - Default Chapter; Table of Contents

Table of contents
1 About this document ..................................................... 4
1.1 General information .......................................................4
1.2 Associated documents ..................................................4
1.3 Target groups ................................................................4
1.4 Symbols.........................................................................5
1.4.1 Danger levels ....................................................5
1.4.2 Danger signs.....................................................5
1.4.3 Symbols in this document .................................5
2 Safety .............................................................................. 6
2.1 Proper use .....................................................................6
2.2 Foreseeable misuse ......................................................6
2.3 Obligations of the operator-owner .................................6
2.4 Safety instructions .........................................................7
2.4.1 Fundamental safety instructions .......................7
2.4.2 Dangers at magnetic coupling systems ............7
2.4.3 Dangers during transportation ..........................7
2.4.4 Dangers during storage ....................................7
2.4.5 Dangers during installation ...............................8
2.4.6 Dangers during removal....................................8
2.4.7 Dangers during connection work ......................8
2.4.8 Dangers during operation .................................8
2.4.9 Dangers during servicing ..................................9
2.4.10 Dangers during maintenance............................9
2.4.11 Dangers during disposal ...................................9
3 Identification................................................................. 10
3.1 Type code....................................................................10
3.2 Rating plate .................................................................11
4 Technical data .............................................................. 11
4.1 Operating limits............................................................11
4.2 Sound pressure level...................................................12
4.3 Required NPSH values................................................12
4.4 Weights........................................................................13
4.5 Materials ......................................................................14
4.6 Accessories .................................................................15
5 Function description.................................................... 15
5.1 Pump structure ............................................................15
5.2 Pump unit structure .....................................................15
5.3 Functional principle......................................................16
5.4 Housing variants..........................................................16
5.5 Magnetic coupling........................................................16
5.6 Overflow valve .............................................................17
6 Transportation, storage............................................... 17
6.1 Dangers during transportation .....................................17
6.2 Dangers during storage ...............................................17
6.3 Unpacking and checking the state of delivery .............17
6.4 Transporting the pump/pump unit................................18
6.5 Storing the pump .........................................................19
7 Preservation ................................................................. 19
7.1 Preservation table........................................................19
7.2 Preserving the inner surfaces......................................19
7.3 Preserving the outer surfaces......................................20
7.4 Removing the preservation..........................................20
8 Installation, removal .................................................... 21
8.1 Dangers during installation ..........................................21
8.2 Dangers during removal...............................................21
8.3 Installing the pump.......................................................21
8.4 Removing the pump.....................................................22
9 Connection.....................................................................23
9.1 Dangers during connection work .................................23
9.2 Connecting the pump to the pipe system.....................24
9.3 Connecting the pump unit to the power supply............25
10 Operation........................................................................25
10.1 Dangers during operation ............................................25
10.2 Commissioning ............................................................26
10.2.1 Cleaning the pipe system ................................26
10.2.2 Filling and venting the pump............................26
10.2.3 Checking the direction of rotation ....................28
10.2.4 Commissioning the pump ................................29
10.3 During operation ..........................................................30
10.3.1 Checking the operating pressure.....................30
10.3.2 Monitoring filters and/or strainers ....................31
10.3.3 Adjusting the overflow valve ............................31
10.3.4 Switching off the pump unit .............................32
10.4 Decommissioning.........................................................32
10.4.1 Decommissioning the pump ............................32
10.5 Recommissioning.........................................................33
10.5.1 Recommissioning the pump ............................33
11 Maintenance...................................................................33
11.1 Dangers during maintenance.......................................33
11.2 Required maintenance.................................................34
11.3 Ball bearing ..................................................................34
11.4 Maintaining the pump...................................................34
11.5 Maintaining the magnetic coupling...............................34
12 Servicing ........................................................................35
12.1 Dangers during servicing .............................................35
12.2 Wear ............................................................................35
12.2.1 Magnetic coupling............................................35
12.3 Replacing the overflow valve .......................................36
12.3.1 Removing the overflow valve...........................36
12.3.2 Installing the overflow valve.............................36
12.4 Replacing the magnetic coupling .................................37
12.4.1 Removing the outer rotor.................................37
12.4.2 Removing the inner rotor .................................38
12.4.3 Installing the inner rotor ...................................39
12.4.4 Installing the outer rotor...................................40
12.5 Replacing the ball bearing and screw set ....................42
12.5.1 Removing the ball bearing and screw set........42
12.5.2 Installing the ball bearing and screw set..........43
13 Disposal..........................................................................44
13.1 Dismantling and disposing of the pump ......................44
14 Troubleshooting ............................................................45
14.1 Possible faults..............................................................45
14.2 Troubleshooting ...........................................................45
15 Accessories ...................................................................47
15.1 Heating.........................................................................47
15.1.1 Possible types of heating.................................47
15.1.2 Electrical heating system.................................47
15.1.3 Fluid heating system........................................49
15.1.4 Heating system special design ........................50
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OIL 02en-GB Edition 2019-03
Operating instructions