CONTENTS
5
8009441/YN36/V3-0/2015-08| SICK OPERATING INSTRUCTIONS | GM35
Subject to change without notice
7.5 Zero adjust ....................................................................................................79
7.5.1 Preparing the system for zero adjust ...........................................79
7.5.2 Fine adjustment on the optical axis on the SR-unit ....................79
7.5.3 Performing zero adjust .................................................................80
7.6 Starting measuring operation.......................................................................81
7.6.1 Installing the purge air fixtures ....................................................81
7.6.2 Purge air units start-up.................................................................81
7.6.3 Sender/receiver unit and reflector start-up ................................82
7.6.4 Installing the weatherproof cover for the SR-unit .......................84
7.6.5 Installing the weatherproof cover for the purge air units ...........84
7.6.6 Evaluation unit start-up ................................................................85
7.6.7 Setting up the SCU System Control Unit .....................................86
8 Maintenance.............................................................................................88
8.1 Safety.............................................................................................................88
8.2 Preparation and general preparatory work ..................................................89
8.3 Maintenance work on SR-unit and reflector ................................................89
8.3.1 Visual inspection and enclosure cleaning ...................................89
8.3.2 Cleaning the optical interface (window) on the SR-unit..............90
8.3.3 Cleaning the optical interface (window) on the reflector ............91
8.3.4 Checking the zero point................................................................91
8.3.5 Checking optical alignment ..........................................................92
8.3.6 Checking the IR source.................................................................93
8.4 Maintenance work on the purge air supply .................................................94
8.4.1 Preparation and general inspection ............................................94
8.4.2 Checking and replacing the purge air filter .................................95
8.4.3 Restarting and checking the purge air unit .................................96
8.5 Evaluation unit (EvU).....................................................................................97
8.6 Box Measuring...............................................................................................98
8.6.1 Determining the necessary test gas concentration ....................98
8.6.2 Carrying out measurement...........................................................98
8.6.3 Restart Measuring mode........................................................... 100
8.7 Filter box measurement for checking the measuring ducts of H
2
O and
CO
2
.............................................................................................................. 101
8.7.1 Setpoint values .......................................................................... 101
8.7.2 Carrying out measurement........................................................ 102
8.7.3 Restart Measuring mode........................................................... 103
9 Troubleshooting and Clearing Malfunctions..................................... 104
9.1 Malfunction categories/possible effects .................................................. 104
9.2 Purge air failure.......................................................................................... 105
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