Riken Keiki GD-10X Series, Operating Manual

Page: 23 / 35

6 Maintenance 6-1. Maintenance intervals and items
- 21 -
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
mainte-
nance
Monthly
mainte-
nance
Regular
mainte-
nance
Power Supply
Check* Check that the power lamp lights up.
○ ○ ○
Status display
Check* Check that the fault lamp does not light up.
○ ○ ○
Concentration
Display Check* Check that the concentration display value is zero (or
20.9 vol% on the oxygen meter). When the reading is
incorrect, perform the zero adjustment (or span
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.
NOTE

Before starting alarm test or span adjustment, be sure to provide a notification to the related
sections and block external signals.