7 Maintenance
7-1. Maintenance intervals and items
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7
7
Maintenance
The monitor is an important instrument for the purpose of safety.
To maintain the performance of the monitor and improve the reliability of safety, perform a regular
maintenance.
7-1. Maintenance intervals and items
This is a safety unit. Never fail to perform daily and regular maintenance before use.
•
Daily maintenance: Perform maintenance before commencing each work.
•
Regular maintenance: Perform maintenance once or more for every six months to maintain the
performance as a safety unit.
Maintenance
item
Maintenance content
Daily
maintenance
Monthly
maintenance
Regular
maintenance
Power supply
check
Check that the LCD display lights up.
Concentration
display check
Check that the concentration display
value is "20.9%".
When the reading is incorrect,
perform the air calibration after
ensuring that no other gases exist
around it.
Alarm test
Inspect the alarm circuit by using the
alarm test function.
Span
Adjustment
Perform span adjustment using a
calibration gas.
Gas alarm
check
Check the gas alarm using a
calibration gas.
NOTE
The built-in sensor of the monitor has a validity period and must be replaced regularly.
WARNING
If an abnormality is found in the monitor, contact RIKEN KEIKI immediately.
