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Teledyne API Model 200A NO
X
Analyzer Instruction Manual, 02246, Rev. G, DCN 5247
8.3 Replacing the Ozone Scrubber Charcoal
The Ozone scrubber consists of a charcoal filled canister mounted on the pump pack. See Table
2-2-3 for the scrubber location. To replace the charcoal:
1.
Turn off the analyzer and pump.
2.
Remove the scrubber from the pump pack by loosening the 1/4" tube fittings.
3.
Unscrew the upper end cap of the scrubber and empty the contents.
4.
Replace the charcoal with TELEDYNE API P/N 00596 or equivalent. Be sure the
charcoal completely fills the canister so that flow channels will not form.
5.
Replace the cap, then re-install the canister on the pump pack.
CAUTION
The charcoal used for the ozone scrubber should NOT be
treated with halogen compounds (chlorine, iodine, etc), since
explosive compounds may be formed on contact with ozone.
8.4 Replacing the Permeation
The permeation tube is contained in the oven at the rear - center of the instrument, refer to Table
2-2-5 for its location. See Table 6-6-6 for illustration.
1.
Turn off the power to the M200A.
2.
Remove the two pneumatic fittings and the rubber insulation from the top of the
assembly.
3.
Remove the oven cover by removing the two screws holding down the cover.
NOTE
That the fitting closest to the Ozone Generator is stainless steel.
This chamber is where the permeation tube should be.
4.
Remove the old permeation tube. Install the new permeation tube in the same chamber
with the membrane facing UP.
5.
Re-assemble the oven and turn on instrument power.
Permeation tubes require 48 hours at 50
C to reach a stable output. We recommend waiting this
long before any calibration checks, adjustments, or conclusions are reached about the permeation
tube.
8-5
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