Omron NS Series Setup Manual page 210

• Inspection Items
Inspect the PT for the following items to check whether the PT is operating within the speci-
fied criteria. If the PT is outside the criteria, use measures such as improving the operating
environment to conform to the standards, or tightening screws.
Inspection
Inspection details
items
Power Power terminal voltage
supply fluctuation
Ambient Ambient temperature
environment (temperature in control panel)
Ambient humidity
(temperature in control panel)
Presence of dust
Presence of oil
Mounting Looseness of fixed mounting
conditions bracket
Connection status of
Connecting Cable
Connectors
Looseness of external wiring
screws
Status of external connecting
cables
Parts with Backlight brightness
limited
service life
Battery
• Do not disassemble, repair, or modify the PT.
Note
• Follow all local government regulations, where applicable, when disposing of the Unit and
used batteries.
Criteria
Allowable voltage range
(24 VDC ±15%)
0 to 50°C
(Refer to Appendix 1.)
35% to 85%
(Refer to Appendix 1.)
No dust accumulated.
No oil between front panel sheet
and molding.
Specified torque.
Fully inserted, locked, and with
No looseness.
No looseness.
No breaks or other damage
Sufficient brightness.
Backlight life (at room tempera-
ture of 25°C) is 50,000 hours,
as a guideline.
5 years (at room temperature of
25°C).
7-2 Inspection and Cleaning
Inspection means
Tester
Thermometer
Temperature meter
Visual inspection
Visual inspection
Phillips screwdriver
Phillips screwdriver
Phillips screwdriver
Visual inspection,
tester
Visual inspection
Replace every 5
years
7-5