Riken Keiki GD-F3A-SC-A, Operating Manual

Page: 15 / 24

13
６．MAINTENANCE AND INSPECTION
Gas detection and alarm instrument is kept in continuous operation over a long time and must
perform a vital role as a safety device. For this purpose, periodical inspection must be made.
The High-pressure Gas Safety Act in Japan sets forth the obligation of periodical inspection of
the gas detection and alarm instrument.
- Maintenance Contract –
Be sure to perform the regular maintenance inspection since this is an instrument for
security and safety. If this detector head founds defective, contact our nearest agent or
RIKEN KEIKI soon.
６－１．Inspection frequency and items
The inspection includes a daily inspection which a person in charge of control and operation of
the gas detection instrument performs inspection before work once a day, and a monthly
inspection carried out once a month, and periodical inspections conducted by the service
personnel designated by manufacturer. The inspection items are confirmation of lights,
concentration indication and alarm function on the indicator/alarm unit side. It is also necessary
to carry out gas calibration at least every 6 months. The law in Japan sets forth that the unit
must issue an alarm during the circuit inspection related to alarm while providing normal
operation, at least, once a month.
To maintain the safety operation of the gas detection instrument, it is recommended to keep
the maintenance contract with our authorized distributor for regular maintenance, adjustment
and overhaul etc including the gas sensitivity adjustment (gas calibration).
For the detail of maintenance contract, contact our nearest agent or RIKEN KEIKI.
・This is a safety instrument and the inspection every 6 months or more is
mandatory to ensure the safety. If the unit is used by continuously
without inspection, the sensor sensitivity may change, resulting in failure
of correct detection.
WARNING
！
* NOTE
・Be sure to inform sections concerned beforehand when performing
alarm test or gas calibration. For the equipment connected with output
signal from indicator/alarm unit, perform them after disconnecting the
output signal.
・Special trained engineer for gas detection instrument can perform
maintenance work and inspection accurately and efficiently. Then, it is
recommended to contact our authorized agent for maintenance and
inspection.