AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 309
CAUTION
The lamp is hot (approx. 60 °C)! Allow the lamp to cool down after the
power supply has been disconnected (approx. 30 minutes).
Remove the old lamp:
1 Switch off the gas analyzer power supply!
2 Open the wall housing door or the 19-inch housing cover.
3 Remove the connector cables to the light barrier boards 1 and 2 above
the filter.
4 Remove the cables from the lamp 3.
5 Loosen 2 fastening screws 4 of the support using a 3-mm Allen wrench.
6 Remove the support with both filter wheels, step motors and lamp from
the housing.
7 Loosen 2 mounting screws 5 of the lamp 3 using a number 3 Allen
wrench.
8 Remove complete lamp 3 from the support 6.
9 Loosen the 12-V-supply connector 10.
10 Remove the mounting screw 8 with washer and mounting bracket for
the temperature sensor 9.
These parts are needed to mount the temperature sensor to the new
lamp.
11 Remove the temperature sensor 9 from the cavity of the temperature
sensor block 7.
12 Loosen the 2 mounting screws 11 of the heater block and remove the
complete heater block from the lamp 3.
Install the new lamp:
13 Before installing the new lamp, record the serial number shown on the
identification plate. It will be needed during amplification optimization.
14 Perform steps 3 to 12 in reverse order.
Restarting the gas analyzer:
15 Close the system housing so that it is tight.
Light penetration during operation leads to erroneous measurement
values and overranging ("Intensity" status message).
16 Turn on the gas analyzer power supply and wait for the warm-up phase
to end.-up.
17 Perform amplification optimization (see page 310).
18 Recommendation: Check sensitivity and linearity.
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