4 Troubleshooting and Maintenance
4-10
CJ-series PROFIBUS Slave Unit Operation Manual for NJ-series CPU Unit (W510)
4-4
Maintenance and Replacement
This section describes the routine cleaning and inspection recommended as regular maintenance as
well as the Unit replacement procedure.
Clean the PROFIBUS Slave Unit regularly as described below in order to keep the network in its opti-
mal operating condition.
•
Wipe the Unit daily with a dry, soft cloth.
•
When a spot can't be removed with a dry cloth, dampen the cloth with a neutral cleanser (2% solu-
tion), wring out the cloth and wipe the Unit.
Precautions for Correct Use
Precautions for Correct Use
Never use volatile solvents such as paint thinner, benzine or chemical wipes. These substances
could damage the surface of the Unit.
Be sure to inspect the system periodically to keep it in optimum operating condition. In general, inspect
the system once or twice a year, but more frequently if the system is used in high temperature or high
humidity environments or dirty/dusty conditions.
Prepare the following equipment before inspecting the system.
Required Equipment
Philips type screwdriver, multimeter, alcohol and a clean cloth.
Optional Test Equipment
Depending on system conditions, a synchroscope, oscilloscope, thermometer or hygrometer (to
measure humidity) might be needed.
Check the items in the following table and correct any that are below standard.
4-4-1
Cleaning
4-4-2
Inspection
Inspection Equipment
Inspection Procedure
Item
Standard
Equipment
Environmental conditions
Ambient temperature
0° C to 55° C
Thermometer
Ambient humidity
10% to 90%
Hygrometer
Dust/dirt accumulation
None
Check visually
