Omron V022-E3-1 operation manual Section, Cautions on replacing the NT600S

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Section 7-4

Points inspected

Inspect the following points to determine if there is any divergence from the stated criteria. If there is, either improve the surrounding environment so that the values fall within the stated range, or adjust the NT600S.

Point Inspected	Inspection Details	Criterion	Inspection Instrument
Power supply voltage	Fluctuation in power supply	Permissible voltage fluctuation	Tester
	terminal voltage	range
		(24 VDC --15% +10%)
Ambient environmental	Ambient temperature	0 to 50￿C	Thermometer
conditions	(temperature in the operation
	panel)
	Ambient humidity	35% to 85%RH	Hygrometer
	(humidity in the operation
	panel)
	Presence/absence of dust	Dust must not be settled	Visual inspection
Mounting conditions	Looseness of mounting	To be no looseness	Accessory tools
	brackets etc.
	Connector connections of	To be fully inserted and locked,
	connecting cable	with no looseness
	Looseness of screws in	To be no looseness	Philips screwdriver
	external wiring
	Conditions of external	Faults such as incipient	Visual inspection
	connecting cables	disconnections.
Components with limited	Brightness of the backlight	Must be sufficiently bright.	Visual inspection
lives		Backlight life:
		Brightness is halved after
		about 20,000 hours in use.
	Brightness of EL display unit	Must be sufficiently bright.	Visual inspection
		EL display unit life:
		Brightness is reduced by 30%
		after about 30,000 hours in
		use.

Caution Do not disassemble for repairs or modification. Otherwise, the product may

￿malfunction.

The disposal of the NT600S (and used backlights) may be regulated by national or local authorities. Dispose of them in accordance with the laws and regula- tions of the relevant country and local authority.

Cautions on replacing the NT600S

When replacing the NT600S after discovering a fault during inspections, note the following points:

Be sure to switch the power OFF before replacement.

￿After replacement, check that the new NT600S is not subject to the same error.

If a faulty unit is returned for repairs, write as detailed a description of the fault as possible and send this description together with the unit to the OMRON address indicated on the back cover of this book.

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