Omron GRT1 - 27-11-2006, Operation Manual

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Maintenance
Section 4-4
4-4 Maintenance
This section describes the routine cleaning and inspection recommended as
regular maintenance.
4-4-1 Cleaning
Clean the PROFIBUS Communication Unit regularly as described below in
order to keep it in an optimum operating condition.
• Regularly wipe the Unit with a dry, soft cloth.
• If a spot cannot be removed with a dry cloth, dampen the cloth with a neu-
tral cleaner, wring out the cloth and wipe the Unit.
!Caution Never use volatile solvents such as paint thinner, benzine or chemical wipes.
These substances could damage the surface of the Unit.
4-4-2 Inspection
Be sure to inspect the system periodically to keep it in optimum operating con-
dition. In general, inspect the system once or twice a year, but more fre-
quently 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 stan-
dard.
Item Standard Equipment
Environmental
conditions
Ambient temperature 0° C to 55° C Thermometer
Ambient humidity 10% to 90% Hygrometer
Dust/dirt accumulation None ---
Installation Are the units installed securely? No looseness ---
Are the communication connectors
fully inserted? No looseness ---
Are the external wiring screws
tight? No looseness ---
Are the connecting cables undam-
aged? No damage ---