Operating manual - CAFP unit
6/75 008326 en 2019.10
3.6 R717 side ............................................................................... 42
3.7 Mechanical float valve ........................................................... 43
3.8 Automatic oil return system, guiding principle .................... 44
3.9 Mechanical oil equalizing - reciprocating compressor,
guiding principle .................................................................... 47
3.10 Oil equalizing - screw compressors, guiding
principle ................................................................................. 48
3.11 Service and maintenance...................................................... 48
3.12 Water treatment .................................................................... 49
3.13 Cooling tower......................................................................... 49
4. Installation and start-up ............................................................. 50
4.1 Base frame alignment ........................................................... 50
4.2 Drying of refrigeration plants................................................ 50
4.3 Points to observe during assembly ....................................... 50
4.4 Points to observe if water has entered a plant in
operation................................................................................ 51
4.5 Drying method....................................................................... 51
4.6 Drying instructions ................................................................ 52
4.7 Practical considerations ........................................................ 53
4.8 Vacuum pump........................................................................ 53
4.9 Use of gas ballast valve ......................................................... 53
4.10 Vacuum gauge ....................................................................... 53
4.11 Hoses ..................................................................................... 53
4.12 Signs of remaining water in the plant ................................... 54
4.13 Lubricating oils ...................................................................... 56
4.14 Oil specification ..................................................................... 56
4.15 Charging instructions ............................................................ 56
4.16 Mixing of CO2and ammonia.................................................. 57
4.17 CO2quality for CAFP .............................................................. 58
5. Operating instructions ................................................................. 59
5.1 Safety precautions ................................................................ 59
5.2 Ventilation.............................................................................. 59
5.3 Pressure ................................................................................. 59
5.4 Hot and cold surfaces ............................................................ 59
5.5 Unisab reading, safety and capacity regulating
system ................................................................................... 59
5.6 Preparations for starting ....................................................... 59
5.7 Starting sequence and regulation definitions....................... 60