Daikin EWWQ380B-SS Installation, Operation And Maintenance Manual page 3

Water-cooled screw chillers
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Refrigerant side measurements ....................................................................................................................................... 40
Electrical measurements .................................................................................................................................................. 40
Service and limited warranty............................................................................................................................................ 41
Obligatory routine checks and starting up apparatuses under pressure ................................................................... 42
Important information regarding the refrigerant used .................................................................................................. 42
List of tables
Table 1 - Acceptable water quality limits ............................................................................................................................ 11
Table 2 - Typical operating conditions with compressors at 100% ..................................................................................... 29
Table 3 - Routine maintenance programme ....................................................................................................................... 33
List of Figures
Fig. 1 - Lifting the unit..................................................................................................................................8
Fig. 2- Minimum clearance requirements for machine maintenance......................................................................9
Fig. 3 - Water piping connection for heat recovery exchangers..........................................................................10
Fig. 4 - Adjusting the safety flow switch .............................................................................................................................. 12
Fig. 5 - User connection to the interface terminal board .................................................................................................... 15
Fig. 6 - Refrigeration cycle of the EWWQ B-SS / EWWQ B-XS DUAL Fr4 unit ................................................................. 18
Fig. 7 - Refrigeration cycle of the EWWQ B-SS / EWWQ B-XS Mono Fr4 unit .................................................................. 19
Fig. 8 - Refrigeration cycle of the EWWQ B-SS / EWWQ B-XS DUAL 3200 unit............................................................... 20
Fig. 9 - Refrigeration cycle of the EWWQ B-SS / EWWQ B-XS Mono 3200 unit ............................................................... 21
Fig. 10 - Picture of Fr4100 compressor ............................................................................................................................... 23
Fig. 11 - Picture of Fr3200 compressor .............................................................................................................................. 23
Fig. 12 - Compression process ........................................................................................................................................... 24
Fig. 13- Refrigeration capacity control mechanism of compressor Fr3200 - Fr4 ............................................................... 25
Fig. 14 - Capacity control mechanism ................................................................................................................................. 26
Fig. 15 - Installation of control devices for Fr4 compressor ................................................................................................ 32
Fig. 16 - Installation of control devices for Fr3200 compressor .......................................................................................... 32
D-EIMWC00508-16EN - 3/48

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