WDE
5© STULZ SpA . – all rights reserved EN/36B/08.2018
Table of contents
1.Safety directions ...................................................................................................7
1.1.Symbols used in this manual .................................................................................................................... 7
1.2.Labels on the unit ......................................................................................................................................... 7
1.3.General information..................................................................................................................................... 7
1.4.Handling refrigerants.................................................................................................................................. 8
1.5.Safety and environmental requirements.............................................................................................. 9
2.Unit identification................................................................................................10
2.1.Intended and non-intended use............................................................................................................13
3.Technical data and drawings ...............................................................................14
3.1.Application limits.........................................................................................................................................14
3.2.Technical data .............................................................................................................................................14
3.3.Drawings........................................................................................................................................................17
4.Components and operating principle ..................................................................24
4.1.Component layout......................................................................................................................................24
4.2.Operating method......................................................................................................................................24
4.3.Mechanical components..........................................................................................................................25
4.4.Cooling components .................................................................................................................................28
4.5.Motors ............................................................................................................................................................30
4.6.Control, monitoring and safety components.....................................................................................31
5.Unpacking and inspection ...................................................................................33
6.Installation...........................................................................................................36
6.1.Positioning the unit ....................................................................................................................................36
6.2.Mechanical installation .............................................................................................................................37
6.3.Electric connections..................................................................................................................................38
7.Start-up ...............................................................................................................40
8.Maintenance ........................................................................................................41
8.1.Safety instructions .....................................................................................................................................41
8.2.Preventive maintenance schedule .......................................................................................................42
8.3.Air circuit........................................................................................................................................................42
8.4.Refrigerant circuit ......................................................................................................................................43
8.5.General appliance cleaning procedures.............................................................................................44
9.Troubleshooting ..................................................................................................45
10.Uninstalling and disposal of the unit .................................................................46
11.Options..............................................................................................................48
11.1.Protective treatment on condenser and evaporator – TREATW...........................................48
11.2.Stainless steel casing – PAKIN..........................................................................................................48
11.3.Seaworthy case packaging - SEAPACK.........................................................................................48
11.4.Refrigerant R134a .................................................................................................................................48
11.5.Electric reheat – RSC............................................................................................................................51
11.6.Crankcase heater for compressor – CRA ......................................................................................51
11.7.Kit for low external temperatures – WINTER KIT........................................................................51
11.8.Main switch - SWT/SWM.....................................................................................................................51
11.9.WIB1000 / WIB1485...........................................................................................................................52
11.10.Voltage Monitoring – VCC.................................................................................................................52
11.11.Monitoring of phase sequence and phase loss (for 3-phase scroll compressors)
– PSCR..................................................................................................................................................................52
11.12.Soft start for three-phase compressor – SOFTT .....................................................................52
11.13.Soft start for single-phase compressor – SOFTM...................................................................55
