Casella Evolution CM2010 Посібник з експлуатації - Сторінка 14
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Друкувати сторінкуEVOLUTION SERIES CM2010 OZONE ANALYSER
Symptom
Unstable span readings.
Lamp current does not go to
maximum when GEN LAMP:
CALIBRATE is selected
3.4 Routine Maintenance
Lamp Adjustment
The physical position of the lamp can be adjusted to achieve higher or lower concentrations of O3 if
desired by the operator. Adjust the lamp as follows:
1. From the CALIBRATION MENU, select CAL MODE: SPAN.
2. From the O3 GEN. MENU, select GEN. LAMP: CALIBRATE and press <Enter>. Verify that the
LAMP CURRENT increases to around 7 mA.
3. Allow the analyser to run in Calibrate mode for about 5 minutes. This allows the lamp to reach
operating temperature and stabilize.
4. Loosen the set screw securing the UV lamp and adjust the lamp (rotate and slide in and out of
the generator body) until the desired O
stabilize after each adjustment.
Note: This will now be the maximum value that the UV lamp can achieve.
5. Secure the set screw.
6. Select GEN. LAMP: OPERATE and press <Enter>.
7. Recalibrate the O
14
Possible Cause
Bad zero air.
Leak.
Loss of purge flow through the
generator.
Unstable analyser flow.
Dirty generator quartz tube.
Unstable generator chamber
temperature.
Bad UV lamp.
Failed IZS Control PCA
analyser not in CAL. MODE:
SPAN.
3
generator. Refer to the CM2010 IZS Module Operation Instructions.
3
Check the zero air supply (refer to
"Zero Air
Bookmark not defined.) and re-
place DFU filter.
Perform a leak check.
Verify a purge flow of approximately
35 cc/min. (refer to
flow is low, replace the purge filter,
orifice, or DFU.
Check analyser flow and verify
stability over time.
Clean the quartz tube (refer to
"Generator
Verify that O
50 °C 5 °C and stable. If not, re-
place the heater/thermistor or the
IZS Control PCA.
Replace the UV lamp (refer to
"Lamp
Replace the IZS Control PCA.
Select CAL. MODE: SPAN in the
CALIBRATION MENU.
output is achieved. Allow enough time for the output to
Solution
Scrubber" on page Error!
"Flow
Test"). If
Cleaning").
lamp temperature is
3
Replacement").
HB4014-02