9. Maintenance
9-1. Maintenance intervals and items
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9
9.
Maintenance
The gas detector is an important instrument for the purpose of safety.
To maintain the performance of the gas detector and improve the reliability of safety, perform a regular
maintenance.
9-1. Maintenance intervals and items
Perform the following maintenance regularly before use.
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Daily maintenance: Perform maintenance before commencing each work.
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Regular maintenance: Perform maintenance once or more for one year (Recommendation: once or
more for six months).
Maintenance item
Maintenance content
Daily
maintenance
Regular
maintenance
Battery level
Check that the battery level is sufficient.
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Tube
Check for cracks and holes.
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Filter
Check the dust filter for dust or clogging.
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Operation of main unit Check the LCD display for a fault indication.
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Concentration
display check
Make the gas detector draw in fresh air and
check that the concentration display value is
zero. When the value is other than zero,
perform zero adjustment by air calibration
after ensuring that no interference gases exist
around.
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Span adjustment
Perform span adjustment using a calibration
gas.
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Gas alarm calibration Check the gas alarm using a calibration gas.
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NOTE
•
The span adjustment requires dedicated equipment and creation of calibration gas. Therefore,
contact RIKEN KEIKI for span adjustment.
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The built-in sensor of the gas detector has a validity period and must be replaced regularly.
•
The sensor life has expired if, for example, the sensor cannot be calibrated in span adjustment, the
reading does not come back after fresh air adjustment, or the reading fluctuates. In this case,
contact RIKEN KEIKI. Note that the warranty period is one year.
WARNING
•
If an abnormality is found in the gas detector, contact RIKEN KEIKI immediately.
