Emerson Copeland Scroll ZR24KRE Application Manuallines page 3

3.15 Suction line accumulator ................................................................................................ 16
4 Electrical connection ..................................................................................... 17
4.1 General recommendations............................................................................................. 17
4.2 Electrical installation ...................................................................................................... 17
4.3 Terminal box .................................................................................................................. 19
Terminal box - IP21 ........................................................................................... 19
4.3.1
Terminal box - Metal IP65 ................................................................................. 20
4.3.2
4.4 Motor insulation .............................................................................................................. 20
4.5 Motor protection ............................................................................................................. 20
4.6 High-potential testing ..................................................................................................... 20
5 Start-up & operation ....................................................................................... 22
5.1 Strength pressure test .................................................................................................... 22
5.2 Compressor tightness test ............................................................................................. 22
5.3 System evacuation ......................................................................................................... 22
5.4 Preliminary checks - Pre-starting .................................................................................. 23
5.5 Charging procedure ....................................................................................................... 23
5.6 Run-in time ..................................................................................................................... 23
5.7 Initial start-up ................................................................................................................. 23
5.8 Rotation direction ........................................................................................................... 24
5.9 Starting sound ................................................................................................................ 24
5.10 Deep vacuum operation ................................................................................................. 24
5.11 Shell temperature ........................................................................................................... 24
5.12 Pump-down cycle ........................................................................................................... 24
5.13 Minimum run time .......................................................................................................... 25
5.14 Shut-off sound ................................................................................................................ 25
5.15 Supply frequency and voltage ....................................................................................... 25
5.16 Oil level .......................................................................................................................... 25
6 Maintenance & repair ..................................................................................... 26
6.1 Disassembling system components .............................................................................. 26
6.2 Provisions of legislation & leak check requirements ...................................................... 26
6.3 Exchanging the refrigerant ............................................................................................. 27
6.4 Replacing a compressor ................................................................................................ 27
6.4.1 Compressor replacement ................................................................................... 28
6.4.2 Start-up of a new or replacement compressor ................................................... 28
6.5 Lubrication and oil removal ............................................................................................ 28
6.6 Oil additives ................................................................................................................... 29
7 Troubleshooting ............................................................................................. 30
8 Dismantling & disposal .................................................................................. 33
9 References ...................................................................................................... 33
Appendix 1: Tightening torques ............................................................................... 34
AGL_AC_ST_ZRKRE_E_Rev01