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© STULZ S.p.A. – all rights reserved EN/06.2016/i09
WSA ExplOrEr OriginAl inStructiOnS
Subjet to change without notice
6.2 Weight on the supports .................................................................................................................59
6.3 Refrigerant circuit ..............................................................................................................................62
6.4 External water circuit ......................................................................................................................62
6.5 Water connection ..............................................................................................................................64
6.6 Filling and bleeding air ..................................................................................................................65
6.7 Electrical connection .......................................................................................................................66
6.8 Opening the electric cabinet .....................................................................................................66
6.9 Position of the electrical connections ..................................................................................67
6.10 Pump control .....................................................................................................................................68
7.2.1 Oil pre-heating ..............................................................................................................................................................70
7.2.2 Commissioning of the chilled water circuit ................................................................................................70
7.2.3 Commissioning of the refrigerant circuit .....................................................................................................71
8.2 Maintenance intervals .....................................................................................................................73
8.3 Refrigerant Circuit ..............................................................................................................................74
8.3.1 Refrigerant charge .....................................................................................................................................................74
8.3.2 Quantity .............................................................................................................................................................................75
8.3.3 Tightness of refrigerant circuit ...........................................................................................................................75
8.3.4 Purity ...................................................................................................................................................................................75
8.3.5 Exchange of filter drier ...........................................................................................................................................75
8.3.6 HP switch .........................................................................................................................................................................76
8.3.7 LP switch...........................................................................................................................................................................76
8.3.8 Expansion valve ............................................................................................................................................................77
8.3.9 Compressor .....................................................................................................................................................................77
10. Dismantling and disposal .....................................................................84
11. cE declaration of conformity ...............................................................85
