Omron NT11 - 01-2004, User Manual

Page: 156 / 186

143
Inspection and Cleaning
Section 6-3
Cautions on replacing the NT11
When replacing the NT11 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 NT11 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.
!Caution Do not disassemble for repairs or modification. Otherwise, the product may
malfunction.
!Caution The disposal of the unit may be regulated by national or local authorities. Dis-
pose of them in accordance with the laws and regulations of the relevant
country and local authority.
Ambient environmental
conditions Ambient temperature (temper-
ature in the operation panel) 0 to 50
°
C Thermometer
Ambient humidity
(humidity in the operation
panel) 35% to 85% Hygrometer
Presence/absence of dust Dust must not be settled Visual inspection
Mounting conditions Looseness of mounting brack-
ets etc. To be no looseness Accessory tools
Connector connections of con-
necting cable To be fully inserted and locked,
with no looseness
Looseness of screws in exter-
nal wiring To be no looseness Phillips screwdriver
Conditions of external connect-
ing cables Faults such as incipient dis-
connections. Visual inspection
Components with limited
lives Brightness of the backlight Must be sufficiently bright.
Backlight life: 50,000 hours
Visual inspection
Point Inspected Inspection Details Criterion Inspection Instrument