Omron NT11 - 01-2004 User Manual page 156

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