Riken Keiki GD-A80 Series, Руководство по эксплуатации

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6 Maintenance 6-1. Maintenance intervals and items
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6
Maintenance
The detector is an important instrument for the purpose of safety.
To maintain the performance of the detector and improve the reliability of safety, perform a regular
maintenance.
Continuing to use the detector without performing maintenance will compromise the sensitivity of the gas
sensor, thus resulting in inaccurate detection.
6-1. Maintenance intervals and items

Daily maintenance: Perform maintenance before beginning to work.

Monthly maintenance: Perform maintenance on the alarm circuit (alarm test) once a month.

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 lamp
check* Check that the power lamp lights up.
○ ○ ○
Status display
check* Check that the fault lamp does not light
up.
○ ○ ○
Gas
concentration
display check* Check that the concentration display
value is zero. When the reading is
incorrect, perform the zero adjustment
after ensuring that no interference
gases exist around it.
○ ○ ○
Alarm test* Inspect the alarm circuit by using the
alarm test function.
－
○ ○
Span adjustment* Perform the span adjustment by using
the calibration gas.
－ －
○
Gas alarm check* Check the gas alarm by using the
calibration gas.
－ －
○
* Check and adjustment are performed at the indicator/alarm unit side. See the operating manual of the
indicator/alarm unit for details.