Contents
1 INTRODUCTION ....................................................................................................................................................................... 36
2 DESCRIPTION OF SYMBOLS .................................................................................................................................................... 36
3 SAFETY ..................................................................................................................................................................................... 36
3.1 General safety warnings .................................................................................................................................................................. 36
3.3 Safety during work ............................................................................................................................................................................ 36
3.5 Safety during system maintenance ............................................................................................................................................. 37
4 PUMP IDENTIFICATION ........................................................................................................................................................... 37
5 TECHNICAL CHARACTERISTICS .............................................................................................................................................. 37
6 DIMENSIONS AND WEIGHT ..................................................................................................................................................... 38
7 OPERATING INSTRUCTIONS .................................................................................................................................................... 40
7.1 Water temperature ............................................................................................................................................................................ 40
7.2 Maximum pressure and flow rate ................................................................................................................................................ 40
7.3 Minimum operating speed ............................................................................................................................................................ 40
7.4 Sound emission .................................................................................................................................................................................. 40
7.5 Vibration ................................................................................................................................................................................................ 40
8 PORTS AND CONNECTIONS .................................................................................................................................................... 41
9 PUMP INSTALLATION .............................................................................................................................................................. 42
9.1 Installation ............................................................................................................................................................................................ 42
9.2 Rotation direction .............................................................................................................................................................................. 42
9.4 Hydraulic connections ..................................................................................................................................................................... 43
9.5 Pump supply ........................................................................................................................................................................................ 43
9.6 Suction line .......................................................................................................................................................................................... 43
9.7 Filtration ................................................................................................................................................................................................ 43
9.8 Outlet line ............................................................................................................................................................................................. 44
9.10 V-belt transmission............................................................................................................................................................................ 45
10 START-UP AND OPERATION .................................................................................................................................................... 45
10.1 Preliminary checks ............................................................................................................................................................................. 45
10.2 Start-up .................................................................................................................................................................................................. 45
11 PREVENTIVE MAINTENANCE .................................................................................................................................................. 46
12 PUMP STORAGE ....................................................................................................................................................................... 46
12.2 Pipes ....................................................................................................................................................................................................... 46
13 PRECAUTIONS AGAINST FROST .............................................................................................................................................. 46
14 WARRANTY CONDITIONS ........................................................................................................................................................ 46
17 SPECIAL VERSIONS .................................................................................................................................................................. 52
17.1 MK2R-MK2SR pumps ........................................................................................................................................................................ 52
17.2 MK2C-MK25C pump ......................................................................................................................................................................... 59
17.3 MK2SH pump ...................................................................................................................................................................................... 62
18 DECLARATION OF INCORPORATION ...................................................................................................................................... 67
35