 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000
0.1-4
3 SERVICE
3.1 IR-paths, cleaning and replacing.................................................................... 3.1-1
3.2 IR-source...................................................................................................... 3.2-1
3.3 Infrared electronics........................................................................................ 3.3-1
3.4 Infrared power supply.................................................................................... 3.4-1
3.5 Chopper ++++ see 3. 2................................................................................ 3.5-1
3.6 Infrared temperature regulation ..................................................................... 3.6-1
3.7 Leak checking............................................................................................... 3.7-1
3.8 Replacing the EPROMS................................................................................ 3.8-1
3.9 Clearing memory........................................................................................... 3.9-1
3.10 Electronic reset........................................................................................... 3.10-1
3.11 Coding of the IR-ranges .............................................................................. 3.11-1
3.12 Adding new IR-ranges................................................................................. 3.12-1
3.13 Cleaning the solenoid valves....................................................................... 3.13-1
3.14 Replacing the flow sensor ........................................................................... 3.14-1
3.15 Installing an AC power stabilizer.................................................................. 3.15-1
3.16 Replacing the gas pump.............................................................................. 3.16-1
3.17 Additional safety features for furnace pneumatics (optional)......................... 3.17-1
3.18 230V / 400 V operation................................................................................ 3.18-1
3.19 Upgrading of analysers with electronic rack for using the
new Windows software................................................................................ 3.18-1
4 MISCELLANEOUS
4.1 Ordering numbers......................................................................................... 4.1-1
4.2 Wiring diagrams............................................................................................ 4.2-1
4.3 Water and gas flow diagrams, analysis sequence.......................................... 4.3-1
4.4 Purging of the chopper.................................................................................. 4.4-1
4.5 Maintenance OH- 900, ON- 900 .................................................................... 4.5-1
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