5-5
5 Maintenance and Abnormality Handling
NB-series Programmable Terminals NB-Designer Operation Manual(V106)
5-2 Checking and Cleaning
5
• The back light or rubber packing of NB unit cannot be replaced.
• Deterioration over time can cause the tough points to move. If the 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 environ-
ment. Inspect the rubber packing periodically.
• In order to replace the battery, the NB units are also necessary to be replaced. Although it is
restricted to NB10W-01B, the battery replacement is available to be dealt as a repair.
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)
NB local time
Checking Items Checking Contents Criterion Checking Method
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