Riken Keiki GD-3EC, Technical Manual

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7. Maintenance 7-7 Parts replacement
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7-7 Parts replacement
7-7-1 Sensor replacement
Please contact Riken Keiki for sensor replacement.
NOTE

Please contact Riken Keiki to request sensor replacement. Calibration using a calibration gas is required
after sensor replacement.
7-7-2 Replacement of periodic replacement parts
The product periodic replacement parts are as follows. The parts should be replaced at the recommended
replacement intervals.
<Recommended periodic replacement parts list>
Name
Recommended
check interval
Recommended
replacement interval
Quantity
(per unit)
Remarks
Sensor guard
(for SD-3RI/GHS)
6 months
3 - 8 years
1
Sensor guard
(for SD-3NC/GH/SP)
Sensor guard
(for SD-3EC/ECS/ECB)
Gas sensor Refer to separate
sensor specifications.
*1
Silicone removal filter 1 year *2
Activated carbon filter 1 year *3
*1: Function checking by a certified service engineer is required after parts replacement. Contact Riken Keiki to request
checking by a certified service engineer to ensure consistent operation and safety.
*2: For combustible gas sensor (SI-8)/Part No.: 4283 0030 20
*3: For combustible gas sensor (CF-8304)/Part No.: 4283 0040 10
NOTE

The above replacement intervals are guidelines only. Replacement intervals may vary depending on
actual operating conditions. These intervals do not constitute warranty periods. Replacement intervals
may vary depending on the results of regular maintenance.