Riken Keiki GD-3EC, Technical Manual

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7. Maintenance 7-1 Maintenance intervals and items
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7
Maintenance
The product is an important safety and disaster prevention device.
Perform product maintenance at regular intervals to ensure performance and to improve disaster prevention
and safety reliability.
7-1 Maintenance intervals and items
The following items should be maintained regularly before using the product:
• Daily maintenance:
Perform maintenance before commencing work.
• Monthly maintenance: Inspect the alarm circuit (alarm test) once a month.
• Regular maintenance: Perform maintenance at least once a year (ideally, at least once every six months).
Maintenance
item
Maintenance details
Daily
maintenance
Monthly
maintenance
Regular
maintenance
Power supply
check
Check to confirm that the power lamp
is lit.
〇 〇 〇
Concentration
display check
Check to confirm that the concentration
reading is zero (or [20.9] (vol%) for
oxygen).
If the reading is offset, perform zero
calibration after confirming that no
miscellaneous gas is present in the
vicinity.
〇 〇 〇
Alarm test Use the alarm test function to check
the alarm circuit.
If you use an optional alarm relay,
check the relay at the same time.
－ 〇 〇
Calibration Perform sensitivity calibration using a
calibration gas.
－ － 〇
Gas alarm check Check the gas alarm using a calibration
gas.
－ － 〇
Grounding cable
check
To ensure EMC performance, check to
confirm that the grounding cable
connection is secure and free of
corrosion.
－ － ○
<Maintenance services>
Riken Keiki provides services related to regular maintenance including calibration, adjustments, and servicing.
Preparing a calibration gas requires dedicated equipment, including gas cylinders of the specified concentration
and gas sampling bags.
Our certified service engineers have expert knowledge of the dedicated tools and products. We recommend
taking advantage of our maintenance service to ensure safe use of the product.