Emerson Copeland Discus Series - Suction Gas-Cooled Compressors; Nameplate Information; DWM Copeland Designation (Old Models)

D6.3.4/0715-0716/E
6.6 Oil additives ..................................................................................................................... 26
6.7 Unbrazing system components ....................................................................................... 26
7 Troubleshooting .............................................................................................. 27
7.1 Lubrication problems ........................................................................................................ 27
7.2 Oil dilution ........................................................................................................................ 27
7.3 Refrigerant migration ....................................................................................................... 27
7.4 Inadequate suction superheat ......................................................................................... 27
7.5 Acid formation .................................................................................................................. 28
7.6 Inadequate compressor cooling ....................................................................................... 28
7.7 High discharge temperatures ........................................................................................... 28
7.8 Motor burnout due to undersized contactors ................................................................... 28
7.9 Motor burnout due to by-passed or disconnected protectors .......................................... 28
8 Dismantling & disposal ................................................................................... 28
Appendix 1 – Compressor connections .................................................................... 29
Standard compressor connections .......................................................................................... 29
Discus compressor connections .............................................................................................. 35
Appendix 2 - Tightening torques (Nm) ...................................................................... 38
Disclaimer ................................................................................................................... 39