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1. Remove the front panel from the instrument by unscrewing the 2 screws underneath the
instrument (No. 1) that secure it in place. Use the cross screwdriver supplied in the tool kit for this
purpose.
2. Once removed, the flow chamber assembly (No. 2) can be seen located to the right of the flow
meter.
3. Remove the holding screw from the flow chamber assembly.
4. Holding the assembly between thumb and forefinger, gently ease it out of the instrument and
discard.
5. Replace the assembly with the new one from the maintenance kit, Put the new assembly back in
place in the instrument and secure with the holding screw. A guide rod is in place to ensure
correct positioning.
6. Replace the front guard and secure in place with the 2 screws underneath the instrument.
7. After changing the spot, a sensor calibration must be performed before using the instrument for
measurement purposes.
Section 8 Troubleshooting
8.1 Measurement
Symptom
Display appears to be frozen - no
active cursor
Display appears to be frozen out
of range
Degassing in flow meter
Measurement spiking
Response time too long
22 English
Possible solution
Check measurement mode (continuous or sample)
When "Out of Range", measurement interval is 60 seconds
Adjust flow rate to between 150 and 200 mL/min
Verify that the filter (if using) is not blocked
Ensure all tubing is tightly and correctly connected to the sample inlet and
outlet connections
Remove any residual air bubbles from the sample line by turning the sample
inlet/outlet valve to the PURGE position for 5 seconds
Use tubes supplied with instrument (low O
Check flow rate and connections
Prior to package sampling, purge the piercer with N
Perform the monthly cleaning procedure
permeable material)
2
gas
2
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