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M400E Ozone Analyzer Operator’s Manual General Troubleshooting & Repair of the M400E Analyzer
13.10.2. REPLACING THE STANDARD REFERENCE O
3
SCRUBBER
1. Turn off power to the instrument.
2. Remove instrument cover.
3. The reference scrubber is a blue colored canister located at the rear of the measure/reference valve
Assembly. See Figure 3-4.
4.
Disconnect the top 1/8” brass tube fitting from the scrubber.
5. Carefully remove the scrubber from the retaining clip.
6. Remove the bottom 1/8” brass tube fitting from the scrubber.
7. Perform the above steps in reverse to install the new scrubber.
NOTE
The new scrubber should be allowed to run in the instrument for at least 24 hrs after which the
instrument should be re-calibrated.
13.10.3. REPLACING THE IZS O
3
SCRUBBER
1. Turn off power to the instrument.
2. Remove instrument cover.
3. The IZS zero air scrubber is attached to the brass elbow inlet fitting on the top of the O
3
generator
assembly. See Figure 13-6.
4.
Disconnect 1/4” Tube Fitting nut on O
3
generator inlet fitting.
5. Disconnect 1/8” tube fitting on the other end of the scrubber.
6. Install new scrubber by reversing these steps.
IZ S Z E R O A IR
SCRUBBER
Figure 13-6: IZS O
3
Generator Zero Air Scrubber Location
04315 Rev. C1 257