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4-1
Section 4 Inspection and Maintenance
4-1 Inspection and Maintenance
Warning
Be sure to turn off the power before conducting inspection or maintenance.
Failure to do so could cause an electric shock or damage to the unit.
4-1-1 Daily inspection
• Check that the screws on the @E.Terminal are tightened firmly.
• Check that the connectors and terminal screws used for connection with other devices are tightened firmly.
• If the display surface or frame is dirty, wipe it with a soft cloth soaked in alcohol (commercially available).
• Conduct periodical inspection once or twice a year. The number of inspections may be increased as necessary if
facilities are relocated or modified, or the environment is hot, humid, or dusty.
4-1-2 Periodical inspection
Inspect the following points periodically.
• Are the ambient temperature and humidity appropriate?
0 to +50 °C, 85 % RH or less
• Are the environmental conditions appropriate?
No excessive dust, no conductive dust contamination, and not stained with organic solvents.
• Does the atmosphere contain no corrosive gas?
• Is the source voltage in the allowable range?
With DC power supply: 24 V DC ± 10 %
• Are the @E.Terminal mounting screws tightened firmly?
• Are the connectors and terminal screws used for connection with other devices tightened firmly?
• Is the lithium primary battery within the expiry date?
About 5 years from the date of your purchase