GEA Grasso - Default Chapter; Table of Contents

OPERATING INSTRUCTIONS
CO
2
/NH
3
CASCADE UNIT
250 - 1000 KW
_551511_om_kas_gbr_1_.doc 5
TABLE OF CONTENTS
1 Operating instructions.......................................................................................................................... 10
1.1 Delivery.................................................................................................................................... 10
1.2 Transport and storage ............................................................................................................ 10
1.3 Transport instructions ............................................................................................................. 10
1.4 Installation............................................................................................................................... 10
1.5 Assembly.................................................................................................................................. 11
1.6 Start-up instructions............................................................................................................... 11
1.6.1 Basics ........................................................................................................................... 11
1.6.2 First commissioning..................................................................................................... 11
1.6.2.1 Leak test....................................................................................................... 11
1.6.2.2 Drying, vacuum ............................................................................................ 12
1.6.2.3 Oil charge..................................................................................................... 12
1.6.2.4 Checking the direction of rotation of the driving motor ........................... 15
1.6.2.5 Checking the direction of rotation of the oil pump motor........................ 15
1.6.2.6 Adjustment of oil pressure .......................................................................... 15
1.6.2.7 Mounting the coupling................................................................................ 16
1.6.2.8 Refrigerant charging.................................................................................... 16
1.6.2.9 Operating position of valves ....................................................................... 17
1.6.2.10 Checking the water circuits ....................................................................... 19
1.6.2.11 Initial startup.............................................................................................. 19
1.6.2.12 Setting the setpoint / limit values and safety devices .............................. 20
1.6.2.13 Switching on the CO
2
refrigerant pumps.................................................. 20
1.6.2.14 Switching on the compressor .................................................................... 20
1.6.2.15 Checking the adjustment of the control slide........................................... 20
1.6.2.16 Checking the control slide adjustment times............................................ 20
1.6.2.17 Automatic mode........................................................................................ 21
1.7 Shutdown in the event of dangerous situations.................................................................... 21
1.8 Switching off ........................................................................................................................... 21
1.8.1 Normal shutdown ....................................................................................................... 22
1.8.2 Shutting down for a lengthy period .......................................................................... 22
1.8.3 Measures during stoppages ....................................................................................... 22
1.8.3.1 Monthly........................................................................................................ 22
1.8.3.2 Four weeks before putting back into service ............................................. 22
1.8.4 Putting back into service after approx 1 year............................................................ 22
2 Start-up / Operation of GSC ................................................................................................................ 23
2.1 General Information ............................................................................................................... 23
2.2 Description of the Grasso System Control.............................................................................. 23
2.2.1 View............................................................................................................................. 23
2.2.2 Lamps/ Push buttons .................................................................................................. 23
2.2.3 Operator terminal....................................................................................................... 24
2.2.3.1 Key assignment............................................................................................ 24
2.2.3.2 Open table of contents ............................................................................... 26
2.2.4 Status messages .......................................................................................................... 27
2.3 System description GSC........................................................................................................... 29
2.3.1 Explanation of the system LED................................................................................... 30
2.4 Alarms ..................................................................................................................................... 31
2.4.1 View active alarms and warnings............................................................................... 31
2.4.2 No alarm signal and the compressor will not start.................................................... 31
2.4.3 Restart following Alarms ............................................................................................ 31
3 Description of Design and Function .................................................................................................... 34
3.1 Brief Description...................................................................................................................... 34