6 Maintenance and Troubleshooting
6-4
NB-series Programmable Terminals Startup Guide Manual(V109)
Precautions for Safe Use
• Customers may not replace the backlight lamp inside the NB Unit. Please contact OMRON’s
customer service center.
•
Deterioration over time can cause the touch points to move. Calibrate the touch panel periodically.
• Water and oil resistance will be lost if the front sheet is torn or is peeling off. Do not use the
Unit, if the front sheet is torn or is peeling off.
• Dispose of the Units and batteries according to local ordinances as they apply.
• Periodically check the installation conditions in applications where the PT is subject to contact
with oil or water.
• The rubber packing will deteriorate, shrink, or harden depending on the operating environment.
Inspect and replace the rubber packing periodically.
Installation state Looseness of fixing metal
pieces etc.
Specified torque Phillips screwdrivers
Connection state of
connector for the cable
Inserted fully and without
looseness.
Phillips screwdrivers
Looseness of screw for
external wiring
Without looseness Phillips screwdrivers
State of external
connection cable
Without abnormality such
as disconnection etc.
Visual check + multimeter
Object with expected life Backlight brightness With enough brightness
Backlight life: approx.
50,000 hours (Typ) at
room temperature (25 °C)
with 40% brightness.
Visual check
Battery 5 years (at 25 °C) Replace it every 5 years
once.
Checking Items Checking Contents Criterion Checking Method
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