
8.2.5 Menu tree, Maintenance......................................................... 51
9 Maintenance...................................................................................... 52
9.1 Safety......................................................................................................... 52
9.2 Maintenance plan..................................................................................... 53
9.2.1 Maintenance protocol.............................................................. 53
9.2.2 Expendable, wearing and spare parts.................................... 54
9.3 Preparatory work....................................................................................... 54
9.4 Visual check.............................................................................................. 54
9.5 Removing the sender/receiver unit and reflector unit........................... 55
9.6 Cleaning optical surfaces......................................................................... 55
9.7 Cleaning the control unit.......................................................................... 56
9.8 Cleaning the purge air unit....................................................................... 57
9.9 Checking the function of the IR source................................................... 57
10 Troubleshooting................................................................................. 58
10.1 Safety......................................................................................................... 58
10.2 Monitoring and diagnostic system........................................................... 58
10.3 Device not functioning.............................................................................. 59
10.4 Clearing malfunctions on the control unit............................................... 59
10.4.1 Communication error between control unit and receiver..... 59
10.5 Malfunction messages............................................................................. 60
10.6 Warning messages................................................................................... 61
10.7 Repairing inadequate purge air supply................................................... 63
10.8 Corrosion on flange.................................................................................. 63
11 Decommissioning............................................................................. 64
11.1 Safety......................................................................................................... 64
11.2 Removing the device................................................................................ 64
11.3 Preparing the device ready for shipping.................................................. 65
11.4 Environmentally compatible disposal ..................................................... 66
12 Technical data.................................................................................... 67
12.1 GM35 system............................................................................................ 67
12.2 Sender/receiver unit................................................................................ 67
12.3 Reflector unit............................................................................................. 68
12.4 Control unit, AWE, sheet steel enclosure................................................ 68
12.5 Control unit, AWE, cast metal enclosure................................................. 69
12.6 Connection unit......................................................................................... 69
12.7 Purge air attachment................................................................................ 70
12.8 Dimension drawing, sender/receiver unit .............................................. 71
12.9 Dimension drawing, reflector unit........................................................... 72
12.10 Dimension drawing, control units............................................................ 73
12.11 Dimension drawing, flange with tube, DN125........................................ 74
12.12 Dimension drawing, purge air attachment.............................................. 74
12.13 Dimension drawing, connection unit....................................................... 75
CONTENTS
8009441/147K/V4-0/2021-02 | SICK O P E R A T I N G I N S T R U C T I O N S | GM35 5
Subject to change without notice