Stulz Explorer WPA - Page 5

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WPA EXPLORER ORIGINAL INSTRUCTIONS
Subjet to change without notice
5.6 Electrical connection data ...........................................................................................................51
6. Installation ...........................................................................................52
6.1 Positioning .............................................................................................................................................52
6.1.1 Minimum distance from obstacles or other chillers ............................................................................53
6.1.2 Distance of installation of several units ...................................................................................................... 53
6.2 Weight on the supports .................................................................................................................54
6.3 Refrigerant circuit ..............................................................................................................................56
6.4 External water circuit ......................................................................................................................56
6.5 Outside temperature sensor ......................................................................................................58
6.6 Chilled water connection ..............................................................................................................59
6.7 Filling and bleeding air ...................................................................................................................59
6.8 Electrical connection.......................................................................................................................60
6.9 Opening the electric cabinet ..................................................................................................... 61
6.10 Position of the electrical connections .............................................................................. 61
6.11 Pump control .....................................................................................................................................62
6.11.1 System with external pump .............................................................................................................................62
7. Commisioning ......................................................................................63
7.1 Preparation ............................................................................................................................................. 63
7.2 First-Startup ...........................................................................................................................................63
7.2.1 Oil preheating ............................................................................................................................................................... 64
7.2.2 Commissioning of the chilled water circuit ............................................................................................... 64
7.2.3 Commissioning of the refrigerant circuit ....................................................................................................65
8. Maintenance ........................................................................................67
8.1 Safety instructions .............................................................................................................................67
8.1.1 Warning notes ...............................................................................................................................................................67
8.2 Maintenance intervals .....................................................................................................................67
8.3 Refrigerant Circuit .............................................................................................................................68
8.3.1 Refrigerant charge ....................................................................................................................................................68
8.3.2 Quantity ............................................................................................................................................................................69
8.3.3 Tightness of refrigerant circuit ..........................................................................................................................69
8.3.4 Purity ..................................................................................................................................................................................69
8.3.5 Exchange of filter drier ...........................................................................................................................................70
8.3.6 HP switch ......................................................................................................................................................................... 70
8.3.7 LP switch...........................................................................................................................................................................70
8.3.8 Expansion valve ...........................................................................................................................................................71
8.3.9 Compressor ....................................................................................................................................................................71
8.4 Air circuit ..................................................................................................................................................72
8.4.1 Condenser .......................................................................................................................................................................72
8.4.2 Condenser Fan ............................................................................................................................................................. 72
8.4.3 Filter ....................................................................................................................................................................................72
8.5 Water circuit ...........................................................................................................................................72
8.5.1 Tightness ..........................................................................................................................................................................72
8.5.2 Evaporator ....................................................................................................................................................................... 73
8.5.3 Differential pressure switch .................................................................................................................................73
8.6 Electric circuit .......................................................................................................................................73
8.6.1 Powerboard ....................................................................................................................................................................73
8.7 Unit in general ....................................................................................................................................... 73
9. Malfunction ..........................................................................................74
10. Dismantling and disposal .....................................................................76
11. CE declaration of Conformity ...............................................................77