YOKOGAWA IR400 series, User Manual

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<7.MAINTENANCE>
7-9
IM 11G02N01-01E
7.4 Inspection and maintenance of limited service-life
components
The analyzer uses limited-life components. The recommended replacement periods are listed in the
below table.
(1) Limited service-life components are those which wear out or for which failure is presumed within
five years under normal operating or storage conditions. Components with more than five years
of service life are the exception.
(2) The following table only involves the recommended periods for conducting preventive
maintenance for limited service-life components; these periods do not guarantee that accidental
failures will not occur.
(3) The recommended replacement periods are tentative and depend on operating conditions.
(4) The recommended replacement periods may vary depending on the field date.
Checkpoint
Check and
maintenance items
Procedure and criteria
Recommended check and
maintenance periods
Routine Once
a
week
Once
a
month
Every
three
months
Every
six
months
Once
a
year
Every
two
years
Every
five
years
Infrared gas analyzer
1. Light source Recommended replacement period: Every five years (*1)

2. Sector motor Recommended replacement period: Every two years (*1)

3. Detector without
O
2
sensor
Recommended replacement period: Every five years (*1)

4. O-ring Recommended replacement period: Every two years,
inspect it when cleaning of measuring cell. See Sec. 7.3
O

5. LCD panel Recommended replacement period: Every five years (*1)

6. Power supply Recommended replacement period: Every five years (*1)

7. Measuring cell Set up an appropriate maintenance period ( by referring to
the check results)
O
8. Reference cell Recommended replacement period: Every five years (*1)

(*) In the check and maintenance columns, place a check mark (
O
) for check and confirmation work,
a dark star (

) for replacement, and a white star (

) for parts preparation for preventive maintenance.
(*1) These are work of service person, contact our service persons.

Precautions to be taken while checking
(1) When handling reference gas (during calibration), carefully read the reference-gas instruction
manual to use the gas correctly. In particular, special attention must be taken in handling carbon
monoxide gases; otherwise, you may suffer from gas poisoning.
(2) During maintenance checks, be sure to keep the near fan on. If any gas leaks, you may suffer
from gas poisoning.
(3) When replacing the analyzer gas filter or conducting maintenance service of the washer,
completely shut the calibration-gas valve. Otherwise, you may suffer from gas poisoning.