Maintenance And Inspection; Instructions For Maintenance And Inspection - Mitsubishi 900 Series User Manual

7

MAINTENANCE AND INSPECTION

This chapter explains the items which should be performed daily or periodically to use the GOT to its opti-
mum.

7.1 Instructions for Maintenance and Inspection

The following instructions should be observed for maintenance and inspection.
DANGER
CAUTION
7 - 1
7.1 Instructions for Maintenance and Inspection
When power is on, do not touch the terminals.
Doing so can cause an electric shock or malfunction.
Before starting cleaning or terminal screw retightening, always switch off the power
externally in all phases.
Not switching the power off in all phases can cause a module failure or malfunction.
Undertightening can cause a short circuit or malfunction.
Overtightening can cause a short circuit or malfunction due to the damage of the
screws or module.
Before changing the backlight, always turn the GOT power OFF (When using a
GOT bus connection, also turn OFF the PLC CPU power), and remove the GOT
main unit from the panel before changing the backlight.
Not switching the power off in all phases may cause an electric shock.
Not removing the unit from the enclosure can cause injury due to a drop.
Do not disassemble or modify the module.
Doing so can cause a failure, malfunction, injury or fire.
Do not touch the conductive and electronic parts of the module directly.
Doing so can cause a module malfunction or failure.
The cables connected to the module must be run in ducts or clamped.
Not doing so can cause the module or cable to be damaged due to the dangling,
motion or accidental pulling of the cables or can cause a malfunction due to a cable
connection fault.
When unplugging the cable connected to the module, do not hold and pull the cable
portion.
Doing so can cause the module or cable to be damaged or can cause a malfunction
due to a cable connection fault.
When disposing of the product, handle it as industrial waste.
While changing the backlight, do not touch the circuit boards and electronic parts of
the GOT.
Doing so can cause a failure or malfunction.
When replacing the backlight, use the gloves.
Otherwise, it may cause you to be injured.
If you should directly touch the plated area of the main unit case with hand, be sure
to wipe off the fingerprint and so on, and install the main unit case.
Otherwise, it may cause a trouble or malfunction.
Start changing the backlight more than 5 minutes after switching the GOT power
off.
Not doing so can cause a burn due to the heat of the backlight.