6 Maintenance and Troubleshooting
6-2
NB-series Programmable Terminals Startup Guide Manual(V109)
6-1 Maintenance
This section describes the maintenance methods for preventing errors occurring.
Maintain the PT to keep it in its optimal condition.
z Backup of application
When the unit needs to be repaired due to the occurrence of some faults or to be replaced by the
substitute, be sure to make backup of the applications and keep it in a safe location.
z Spare part of Unit
It is recommended to prepare the spare part of NB Unit in advance in order to repair the system
when the faults occurred in NB Unit or the screen is not clear due to the backlight life expires.
z Replace of battery
The lithium battery is used for the backup of the non-screen data such as calendar data, clock data
etc.
The life of the battery is approximate 5 years at 25
°C (1 year = 365 days ×12 hours /day). If the
battery is used at high temperature, its life will be reduced. Ask for repairment after backup the
project data according to the environment in which you are using the NB units.
Do not attempt to disassemble the units or touch inside of the units while the power is
ON. Otherwise it may result in electric shock.
Always the personnel in charge confirm that installation, inspection, and maintenance
were properly performed for the NB Units.
“Personnel in charge” is qualified and responsible for obtaining safety in each phase
of machine design, installation, operation, maintenance, and disposal.
Do not attempt to disassemble, repair, or remodel the NB units. Otherwise it may
impair the proper safety functions.
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