KRAL DKC Series, Operating Instructions Manual

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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
1.4.4 Symbols for personal protective equipment...... 6
1.5 Designations in this document....................................... 6
2 Safety .............................................................................. 6
2.1 Proper use ..................................................................... 6
2.2 Foreseeable misuse ...................................................... 6
2.3 Obligations of the operator-owner ................................. 7
2.4 Safety instructions ......................................................... 7
2.4.1
Fundamental safety instructions ....................... 7
3 Identification................................................................... 8
3.1 Type code...................................................................... 8
3.2 Rating plate ................................................................... 9
4 Technical data ................................................................ 9
4.1 Operating limits.............................................................. 9
4.2 Filling volume................................................................. 9
4.3 Required NPSH values.................................................. 9
4.4 Internal pressure loss of the pump station..................... 9
4.5 Sound pressure level................................................... 10
4.6 Weights........................................................................ 10
4.7 Heating system (optional)............................................ 11
4.7.1
Operating data ................................................ 11
4.7.2 Heating system special design ....................... 11
5 Function description.................................................... 12
5.1 Structure ...................................................................... 12
5.2 Functional principle...................................................... 13
5.3 Reversing valve ........................................................... 13
5.4 Expansion valve .......................................................... 13
5.5 Pressure measurement ............................................... 13
5.6 Strainer ........................................................................ 14
5.7 Options ........................................................................ 15
5.8 Heating system (optional)............................................ 16
5.8.1
Possible types of heating ................................ 16
5.8.2 Electrical heating system ................................ 16
5.8.3 Fluid heating system ....................................... 17
5.8.4 Heating system special design ....................... 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 station..................................... 18
6.5 Storing the pump station.............................................. 19
6.6 Heating system (optional)............................................ 19
6.6.1
Storing heating elements ................................ 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 Mounting the pump station........................................... 21
8.4 Protecting the pump station against pressure peaks ... 23
8.5 Installing the heating system (optional)........................ 23
8.5.1
Danger when installing the heating element.... 23
8.5.2 Installing the electrical heating system ............ 23
8.5.3 Installing the fluid heating system.................... 25
8.5.4 Installing the heating system special design ... 25
8.6 Removing the pump station ......................................... 25
9 Connection ..................................................................... 27
9.1 Dangers during connection work ................................. 27
9.2 Connecting the pump station to the pipe system ......... 27
9.3 Insulating the pump...................................................... 28
9.4 Connecting the pipe station electrically/pneumatically
..................................................................................... 28
10 Operation........................................................................ 29
10.1 Dangers during operation ............................................ 29
10.2 Commissioning ............................................................ 30
10.2.1 Cleaning the pipe system ................................ 30
10.2.2 Filling and venting the pump station ................ 30
10.2.3 Checking the direction of rotation .................... 32
10.2.4 Commissioning the pump station .................... 32
10.2.5 Taking the heating into operation (optional) .... 33
10.3 During operation .......................................................... 34
10.3.1 Checking the operating pressure..................... 34
10.3.2 Setting the pressure maintaining valve (optional)
......................................................................... 34
10.3.3 Activating the reversing valve.......................... 35
10.3.4 Operating the two-way valve (optional) ........... 35
10.3.5 Switching off the pump station......................... 36
10.4 Decommissioning......................................................... 36
10.4.1 Taking the pump station out of operation ........ 36
10.5 Recommissioning......................................................... 37
10.5.1 Recommissioning the pump station................. 37
11 Maintenance ................................................................... 38
11.1 Dangers during maintenance ....................................... 38
11.2 Required maintenance ................................................. 38
11.3 Maintaining the pump station ....................................... 38
11.4 Maintaining the strainers .............................................. 39
12 Servicing ........................................................................ 39
12.1 Dangers during servicing ............................................. 39
12.2 Signs of wear ............................................................... 39
12.3 Servicing the pump station........................................... 39
12.4 Replacing the pump ..................................................... 40
12.5 Cleaning the strainer .................................................... 41
12.6 Replacing the seal ring of the control plug ................... 43
13 Disposal.......................................................................... 44
13.1 Dismantling and disposing of the pump station ........... 44
14 Troubleshooting ............................................................ 45
14.1 Possible faults .............................................................. 45
14.2 Troubleshooting ........................................................... 45
2 OID 02en-GB Edition 2019-11 Operating instructions