Omron NX701-1620, User Manual

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6 Inspection and Maintenance
6 - 12 NX-series CPU Unit Hardware User’s Manual (W535)
Additional Information
The date of manufacturing can be checked on the side of the Fan Unit.
DDMYY gives the lot number, and “M” gives the following meaning.
1 to 9: January to September, X: October, Y: November, Z: December
Precautions for Safe Use
Always turn OFF the power supply to the Controller before replacing the Fan Unit.
The Power Supply Unit may continue to supply power to the rest of the Controller for a few sec-
onds after the power supply turns OFF. The PWR indicator is lit during this time. Confirm that
the PWR indicator is not lit before you perform any of the above.
1
Turn OFF the power supply to the Controller.
2
Remove the Fan Unit while you push back the lever on top of the CPU Unit using a tool such as
a flat-blade screwdriver.
Precautions for Safe Use
Do not touch the heatsink inside the CPU Unit immediately after turning OFF the power supply.
Doing so may result in burn injury.
6-3-4 Procedure of Fan Unit Replacement
DDMYY