Toshiba nv Series Instruction Manual page 8

4. Safety Precautions on Maintenance and Inspection
When installing or removing the
module, unit, terminal block, or
Mandatory
wiring cable, make sure that the
external power supply is off.
Otherwise, there will be live electric poles
on the back of the external terminal block
of the module, causing an electric shock.
Do not connect the battery in
reverse, charge, disassemble,
Prohibited
overheat it, throw it into fire, or
short-circuit it.
It may cause an explosion or fire.
Replace the battery every 5
years.
Mandatory
If the battery is worn, the data or programs
saved in the controller module may be lost,
causing an accident or damage to the
machine due to malfunction.
Replace the shutdown capacitor
every 8 years.
Mandatory
If the shutdown capacitor is worn, the data
or programs saved in the controller module
may be lost, causing an accident or
damage to the machine due to
malfunction.
Do not drop, crush, or apply
strong shocks to the device,
Prohibited
module, or board.
Otherwise it will cause failure.
vi
6F8C1511
WARNING
When replacing the power fuse
or alarm fuse of the device, turn
Mandatory
off the device.
Otherwise, it may cause an electric shock
or fire.
Replace fuses or batteries with
specified items.
Mandatory
Using anything other than specified may
cause a fire or failure.
Be extremely careful when
measuring the power supply
Mandatory voltage at the power terminal
part of the module during an
inspection.
Otherwise, it may cause an electric shock.
CAUTION
Replace the battery for the
controller module every 4 years
Mandatory
(confirmation required) if the
annual average temperature is
30C or less, or every 2 years
(confirmation required) if it is
above 30C.
If the battery is worn, the data or programs
saved in the controller module may be lost
depending on the application, causing an
accident or damage to the machine due to
malfunction.
When replacing the module, do
not install the different type.
Prohibited
Otherwise, it may cause an accident or
damage to the machine due to
malfunction.