KRAL K 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.........................................................................4
1.4.1 Danger levels ....................................................4
1.4.2 Danger signs.....................................................5
1.4.3 Symbols in this document .................................5
2 Safety .............................................................................. 5
2.1 Proper use .....................................................................5
2.2 Foreseeable misuse ......................................................5
2.3 Obligations of the operator-owner .................................6
2.4 Safety instructions .........................................................6
2.4.1 Fundamental safety instructions .......................6
3 Identification................................................................... 6
3.1 Type code......................................................................6
3.2 Rating plate ...................................................................7
4 Technical data ................................................................ 8
4.1 Operating limits..............................................................8
4.2 Required NPSH values..................................................8
4.3 Sound pressure level.....................................................8
4.4 Weights..........................................................................8
4.5 Accessories ...................................................................8
5 Function description...................................................... 9
5.1 Pump structure ..............................................................9
5.2 Pump unit structure .......................................................9
5.3 Functional principle......................................................10
5.4 Housing variants..........................................................10
5.5 Shaft seal.....................................................................10
5.6 Overflow valve .............................................................11
6 Transportation, storage............................................... 12
6.1 Dangers during transportation .....................................12
6.2 Dangers during storage ...............................................12
6.3 Unpacking and checking the state of delivery .............12
6.4 Transporting the pump/pump unit................................12
6.5 Storing the pump .........................................................13
7 Preservation ................................................................. 14
7.1 Preservation table........................................................14
7.2 Preserving the inner surfaces......................................14
7.3 Preserving the outer surfaces......................................14
7.4 Removing the preservation..........................................14
8 Installation, removal .................................................... 15
8.1 Dangers during installation ..........................................15
8.2 Dangers during removal ..............................................15
8.3 Installing the pump ......................................................15
8.4 Removing the pump ....................................................16
9 Connection ................................................................... 17
9.1 Dangers during connection work .................................17
9.2 Connecting the pump to the pipe system ....................17
9.3 Insulating the pump .....................................................18
9.4 Assembling the pump and motor.................................18
9.5 Connecting the pump unit to the power supply ...........19
10 Operation........................................................................20
10.1 Dangers during operation ............................................20
10.2 Commissioning ............................................................20
10.2.1 Cleaning the pipe system ................................20
10.2.2 Filling and venting the pump............................20
10.2.3 Checking the direction of rotation ....................22
10.2.4 Commissioning the pump ................................22
10.3 During operation ..........................................................24
10.3.1 Checking the operating pressure.....................24
10.3.2 Monitoring filters and/or strainers ....................24
10.3.3 Adjusting the overflow valve ............................24
10.3.4 Switching off the pump unit .............................25
10.4 Decommissioning.........................................................25
10.4.1 Decommissioning the pump ............................25
10.5 Recommissioning.........................................................26
10.5.1 Recommissioning the pump ............................26
11 Maintenance...................................................................26
11.1 Dangers during maintenance.......................................26
11.2 Required maintenance.................................................27
11.3 Ball bearing ..................................................................27
11.4 Maintaining the pump...................................................27
11.5 Cleaning the leakage vent hole....................................27
12 Servicing ........................................................................28
12.1 Dangers during servicing .............................................28
12.2 Wear ............................................................................28
12.2.1 Signs of wear...................................................28
12.2.2 Mechanical seal...............................................28
12.3 Replacing the overflow valve .......................................28
12.3.1 Removing the overflow valve...........................28
12.3.2 Installing the overflow valve.............................29
12.4 Replacing the coupling.................................................29
12.4.1 Removing the coupling ....................................29
12.4.2 Installing the coupling ......................................30
12.5 Replacing the ball bearing ...........................................31
12.5.1 Removing the ball bearing...............................31
12.5.2 Installing the ball bearing.................................31
12.6 Replacing the mechanical seal ....................................33
12.6.1 Removing the mechanical seal........................33
12.6.2 Installing the mechanical seal..........................33
12.7 Replacing the screw set...............................................35
12.7.1 Removing the screw set ..................................35
12.7.2 Installing the screw set ....................................35
13 Disposal..........................................................................36
13.1 Dismantling and disposing of the pump ......................36
14 Troubleshooting ............................................................37
14.1 Possible faults..............................................................37
14.2 Troubleshooting ...........................................................37
15 Accessories ...................................................................39
15.1 Heating.........................................................................39
15.1.1 Possible types of heating.................................39
15.1.2 Electrical heating system.................................39
15.1.3 Fluid heating system........................................41
15.1.4 Heating system special design ........................42
16 Spare parts.....................................................................43
16.1 Overview ......................................................................43
16.2 Maintenance kits ..........................................................44
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OIK 14en-GB Edition 2019-11
Operating instructions