Omron CJ1W-DRM21, CS1W-DRM21 operation manual Maintenance and Replacement, Cleaning, Inspection

Maintenance and Replacement Section 9-4

9-4 Maintenance and Replacement

This section describes the routine cleaning and inspection recommended as regular maintenance as well as the Unit replacement procedure required if a DeviceNet Unit fails.

9-4-1 Cleaning

Clean the DeviceNet Units regularly as described below in order to keep the network in its optimal 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% solution), wring out the cloth, and wipe the 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.

Never use volatile solvents such as paint thinner, benzene, or chemical wipes.

These substances could damage the surface of the Unit.

9-4-2	Inspection
		Be sure to inspect the system periodically to keep it in its optimal operating
		condition. In general, inspect the system once every 6 to 12 months, but
		inspect more frequently if the system is used with high temperature or humid-
		ity or under dirty/dusty conditions.
Inspection Equipment		Prepare the following equipment before inspecting the system.
		Required Equipment
		Have a standard and Phillips-head screwdriver, multimeter, alcohol, and a
		clean cloth.
		Equipment Required Occasionally
		Depending on the system conditions, a synchroscope, oscilloscope, ther-
		mometer, or hygrometer (to measure humidity) might be needed.
Inspection Procedure		Check the items in the following table and correct any items that are below
	!Caution	standard.
			Item	Standard	Equipment
		Environmental	Ambient and cabinet temperature	0°C to 55°C	Thermometer
		conditions
			Ambient and cabinet humidity	10% to 90%	Hygrometer
			(with no condensation or icing)
			Dust/dirt accumulation	None	---
		Installation	Are the Units installed securely?	No looseness	---
			Are the communications connec-	No looseness	---
			tors fully inserted?
			Are the external wiring screws	No looseness	---
			tight?
			Are the connecting cables	No damage	---
			undamaged?

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