Emerson Copeland Scroll ZB50KCE - Page 3

C6.2.27/0716-0219/E
5.3.3 Crankcase heaters ............................................................................................. 14
5.4 Pressure safety controls ................................................................................................ 14
5.4.1 High pressure control ......................................................................................... 14
5.4.2 Low pressure control .......................................................................................... 14
5.5 Discharge temperature protection ................................................................................. 15
5.5.1 ASTP Advanced Scroll Temperature Protection ................................................ 15
5.5.2 Discharge line thermostat................................................................................... 15
5.6 Motor protection ............................................................................................................. 17
5.7 High-potential testing ..................................................................................................... 17
6 Starting up & operation.................................................................................. 18
6.1 Strength pressure test .................................................................................................... 18
6.2 Tightness/pressure test .................................................................................................. 18
6.3 System evacuation ......................................................................................................... 18
6.4 Preliminary checks – Pre-starting .................................................................................. 18
6.5 Charging procedure ....................................................................................................... 19
6.6 Initial start-up ................................................................................................................. 19
6.7 Rotation direction ........................................................................................................... 19
6.8 Starting sound ................................................................................................................ 20
6.9 Deep vacuum operation ................................................................................................. 20
6.10 Shell temperature ........................................................................................................... 20
6.11 Pump-down cycle ........................................................................................................... 20
6.12 Minimum run time .......................................................................................................... 20
6.13 Shut-off sound ................................................................................................................ 21
6.14 Frequency ...................................................................................................................... 21
6.15 Oil level .......................................................................................................................... 21
7 Maintenance & repair ..................................................................................... 22
7.1 Exchanging the refrigerant ............................................................................................. 22
7.2 Rotalock valves .............................................................................................................. 22
7.3 Replacing a compressor ................................................................................................ 22
7.3.1 Compressor replacement ................................................................................... 22
7.3.2 Start-up of a new or replacement compressor ................................................... 22
7.4 Lubrication and oil removal ............................................................................................ 22
7.5 Oil additives ................................................................................................................... 23
7.6 Unbrazing system components ..................................................................................... 23
8 Dismantling & disposal .................................................................................. 24
DISCLAIMER .............................................................................................................. 24