5-32 | Model 900 ADA / Model 930 Sulfur Pit Analyzers
3. Open the Oven door and allow the Oven to cool down enough to
ensure safe handling of its internal components.
The Oven enclosure and components within the Oven are hot; take
precautions to avoid burning yourself.
4. GP Analyzers Only:
Turn off the Instrument Air supply to the analyzer and then close the
Aspirator Air valve.
Purged Analyzers:
The Instrument Air supply must always remain on for the Purge
Bypass Switch to operate properly.
5. Meanwhile, open the Electronics Enclosure and:
a. Disconnect the ribbon cable from J100 on the Optical Bench board
(from J102 on the Micro-Interface board).
b. Disconnect the AC power line (connector plug) from TB100 on the
Optical Bench board.
c. Disconnect terminals of yellow/green ground wire that runs from
the Electronics Enclosure to the Optical Bench.
d. Optional: If using the Optical Bench Purge, disconnect the purge
line (black tube) from the Optical Bench Purge Fitting.
6. After the Oven has cooled down enough to work on, disconnect the
Measuring Cell from the Heater Plate and remove it from the Oven:
The analyzer sample system will be under positive pressure; take
precautions to avoid injury.
a. Disconnect the Measuring Cell tubing.
b. Remove the Heat Transfer Block Plug from the Heat Transfer Block
and then remove the M4 x 25 screw using only a flat hex key. Do
not use a ball driver – the head can break off inside the screw.
!
WARNING
!
WARNING
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