Maintenance And Replacement; Cleaning; Inspection - Omron CJ Series Operation Manual

7 Troubleshooting and Maintenance
7-7

Maintenance and Replacement

This section describes the routine cleaning and inspection recommended as regular maintenance as
well as the Unit replacement procedure.
7-7-1

Cleaning

Clean the PROFIBUS Master Units 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% sol
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.
7-7-2

Inspection

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.
Inspection Equipment
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.
Inspection Procedure
Check the items in the following table and correct any that are below standard.
Environmental conditions
7-32
Item
Ambient temperature
Ambient humidity
Dust/dirt accumulation
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
Standard Equipment
0° C to 55° C Thermometer
10% to 90% Hygrometer
None Check visually