7 Maintenance
7-1. Maintenance intervals and items
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7
Maintenance
The gas detector is an important instrument for the purpose of safety.
To maintain the performance of the gas detector and improve the reliability of safety, perform a regular
maintenance.
7-1. 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.
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.
Flow rate
check
Check the flow rate to find abnormalities.
Filter check
Check the dust filter for dust or clogging.
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.
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Summary of Contents for SD-1DOX-AS
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Page 61: ...10 Product Specifications 10 1 List of specifications 59 Outline Drawings Adapter A NPT1 2...
Page 65: ...10 Product Specifications 10 1 List of specifications 63 Outline Drawings Cable gland G3 4...
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