6 - 2 Inspections
6-12
This section describes inspections that should be performed regularly.
■
Notes on inspections
•
Do not use organic solvents or alkali for cleaning.
•
Turn off the power before cleaning.
•
Tighten terminals and screws to specified torque.
■
Inspection procedures
Chapter 6. MAINTENANCE AND INSPECTION
Check points
Check
Correction
Mounting bracket, power supply
All screws must be properly
Tighten or correct as necessary.
terminals, connector
tightened and all connectors and
connection sand connector
terminals properly connected.
securing screws
Ambient temperature and humidity Temperature and humidity must be If the temperature is too high,
Environmental conditions
within the prescribed range.
install a fan to lower the
There must be no corrosive gas,
temperature.
dust or condensation.
Adjust environment to ensure
proper ventilation.
Panel protective sheet
The display should be easy to
Wipe the panel protective sheet
view.
with a soft damp cloth or use a
The panel protective sheet must
soft brush.
be properly attached.
If required, replace the panel
There must not be any dust on the protective sheet.
panel protective sheet.
Power supply voltage
The power supply voltage must be Check the power supply, power
within the following ranges
voltage and wiring.
DC power supply: 20.4 to 27.6Vdc
Battery life
The battery must be less than 4
Battery replacement.
years old.
No battery alarms should have
been generated.
