Mitsubishi Electric MELSEC A Series User Manual page 8

[STARTUP AND MAINTENANCE PRECAUTIONS]
The online operations conducted for the CPU module being operated,
connecting the peripheral device (especially, when changing data or
operation status), shall be conducted after the manual has been carefully
read and a sufficient check of safety has been conducted.
Operation mistakes could cause damage or problems with of the
module.
Do not disassemble or modify the modules.
Doing so could cause trouble, erroneous operation, injury, or fire.
Use any radio communication device such as a cellular phone or a PHS
phone more than 25cm (9.85 inch) away from the PLC.
Not doing so can cause a malfunction.
Switch all phases of the external power supply off before mounting or
removing the module. If you do not switch off the external power supply,
it will cause failure or malfunction of the module.
Do not drop or give an impact to the battery installed in the module.
Otherwise the battery will be broken, possibly causing internal leakage
of electrolyte. Do not use but dispose of the battery if it has fallen or an
impact is given to it.
Always make sure to touch the grounded metal to discharge the
electricity charged in the electricity charged in the body, etc., before
touching the module.
Failure to do say cause a failure or malfunctions of the module.
[DISPOSAL PRECAUTIONS]
When disposing of this product, treat it as industrial waste.
[TRANSPORTATION PRECAUTIONS]
When transporting lithium batteries, make sure to treat them based on
the transport regulations. (Refer to Chapter 7 for details of the controlled
models.)
CAUTION
CAUTION
CAUTION
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