PN 903-8797, Rev A
Before performing maintenance on the analyzer, bleed down the pres-
sure in the sample system by closing the isolation valve on the Sample
Probe or at the Sample Inlet valve. Then, open the Bypass Valve, if not
already done, and allow the gas pressure in the sample system and
Measuring Cell to depressurize for approximately 5 minutes.
This procedure is necessary prior to changing out any components
or replaceable parts, as part of regular preventive or general mainte-
nance.
Checking Flamepaths and Gaps
Possible Cause/
Condition Corrective Action
• Flamepath joining
surfaces have scratches,
dents, or other damage.
• Flamepaths around
User Interface win-
dows/push-buttons are
worn or damaged.
Electronics Enclosure
Each time the Electronics Enclosure is opened, inspect the
joining surfaces for damage (scratches, dents, etc.).
Before closing the Electronics Enclosure door, carefully clean the
joining surfaces (amepath) with a soft non-abrasive cloth.
During each analyzer maintenance, use a feeler gauge to
check the amepath gap of the Electronics Enclosure anges
(enclosure door and housing joining surfaces). The gap must
not exceed 0.08 mm; if the gap exceeds this value, contact
AMETEK for advice.
See “Examining and Caring For the Flamepaths” in this chapter.
User Interface Window/Push-buttons
Inspect the amepaths around the User Interface’s window and
push-buttons for signs of wear (discoloration) or damage (bent
or scratched push-buttons).
For information on what to do if these amepaths appear worn
or damaged, contact AMETEK Service.
See “Examining and Caring For the Flamepaths” in this chapter.
Other Flamepaths
For information on the required dimensions of other amepath
joints, contact AMETEK Service.
See “Examining and Caring For the Flamepaths” in this chapter.
Checking and Recording Operating Temperatures
From the RUN Mode screen, check and record the operating temperatures to
ensure they are all within 2 % of their setpoints. Compare the current tempera-
tures to the actual settings.
RUN Mode
Maintenance and Troubleshooting | 4-7
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