Cleaning And Maintenance; Cleaning; Periodic Inspections - Omron NX1P2 series User Manual

7 Inspection and Maintenance
7-1

Cleaning and Maintenance

This section describes daily maintenance and the cleaning and inspection methods.
Inspect the NX-series NX1P2 CPU Unit daily or periodically in order to keep it in optimal operating con-
dition.
7-1-1

Cleaning

Perform the following cleaning procedures periodically to ensure the NX-series CPU Unit is maintained
in the best operating condition. Always turn OFF the power supply to the Controller before performing
the cleaning procedures.
• Wipe off the dust or dirt on the front, top or bottom of the Unit over with a dry, soft cloth when doing
daily cleaning.
• If dust or dirt remains even after wiping with a soft, dry cloth, wipe over with a cloth that has been wet
with a sufficiently diluted detergent (2%) and wrung dry.
• When the CPU Unit is used in a dusty environment, remove the dust on the heatsink inside the CPU
Unit with a tool such as an antistatic gas duster. Do not touch the inside of the CPU Unit.
• A smudge may remain on the Unit from gum, vinyl, or tape that was left on for a long time. Remove
the smudge when cleaning.
Precautions for Correct Use
• Never use volatile solvents, such as paint thinner, benzene, or chemical wipes.
• Do not touch the connectors.
7-1-2

Periodic Inspections

Although the major components in NX-series Controllers have an extremely long life time, they can
deteriorate under improper environmental conditions. Periodic inspections are thus required to ensure
that the required conditions are being kept.
Inspection is recommended at least once every six months to a year, but more frequent inspections
may be necessary depending on the severe environments.
Take immediate steps to correct the situation if any of the conditions in the following table are not met.
Periodic Inspection Items
Inspec-
No.
tion item
1 External
power
supply
2 I/O power
supply
7 - 2
Inspection details
Check for voltage fluctua-
tions at the power supply ter-
minals.
Check for voltage fluctua-
tions at the I/O terminals.
Criteria
The voltage must be Use a voltage tester to check the
within the allowable power supply at the terminals. Take
voltage fluctuation necessary steps to bring voltage of
range. the supplied power to within the
allowable voltage fluctuation range.
Voltages must be within Use a voltage tester to check the I/O
specifications for each power supply at the terminals. Take
Unit. necessary steps to bring voltage
fluctuations within limits.
NX-series NX1P2 CPU Unit Hardware User's Manual (W578)
Correction