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Inspection and Maintenance
1. Inspection and Maintenance 5-1
5
1. Inspection and Maintenance
Daily Inspection
Check that the screws on the V9 series unit 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 commercially available
alcohol.
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.
Periodical Inspection
Inspect the following points periodically.
Are the ambient temperature and humidity appropriate?
0 to +50 °C (0 to +40 °C for the V9150 series), 85 %RH or less
Are the environmental conditions appropriate?
No excessive dust and no conductive dust
Is there corrosive gas in the atmosphere?
Is the source voltage in the allowable range?
AC power supply: 100 to 240 VAC 15 % to +10 %DC power supply: 24 VDC 10 %
Are the V9 series mounting screws tightened firmly?
Are the connectors and terminal screws used for connection with other devices tightened firmly?
Has the coin-type lithium battery passed its replacement date?
Within about 5 years from the date of manufacture
DANGER
Always turn OFF the power before conducting inspection or maintenance. Failure to do
so could cause an electric shock or damage to the unit.