66
Inspection and Cleaning
Section 5-2
Items to Inspect
Inspect the following items to determine whether 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 PT by, for example, re-
tightening screws.
Note
(1) Do not disassemble for repairs or modification.
(2) Disposal of batteries may be regulated by local authorities. Dispose of
them in accordance with the applicable laws and regulations.
Inspected
item
Inspection details
Criteria
Method
Power supply
voltage
Fluctuation in power
supply terminal volt-
age
Allowable voltage
fluctuation range
(24 VDC
±
15%)
Tester
Ambient envi-
ronmental con-
ditions
Ambient temperature
0 to 40
°
C
Thermometer
Ambient humidity
35% to 85%
Hygrometer
Presence of dust
There must be no
accumulated dust.
Visual
Presence of oil
There must be no oil
penetrating between
the front-panel sheet
and the plastic.
Visual
Mounting con-
ditions
Looseness of mount-
ing brackets
Must be tightened to
the specified torque.
Phillips screwdriver
Connecting cable
connections
Must be fully inserted
and locked, with no
looseness.
Visual
Looseness of screws
in external wiring
There must be no
looseness.
Phillips screwdriver
Conditions of exter-
nal connecting cables
Must not be starting
to break or have
other faults.
Visual, tester
Consumable
parts
Brightness of back-
light
Must be sufficiently
bright.
Backlight service life:
50,000 hours at 25
°
C
Visual
Battery
5 years (at 25
°
C)
Replacement every
five years
Summary of Contents for NSH5
Page 2: ......
Page 4: ...iv ...
Page 12: ...xii ...
Page 16: ...xvi ...
Page 24: ...xxiv EC Directives 6 ...
Page 58: ...34 Installing the Mounting Bracket Section 2 5 ...
Page 86: ...62 Connection Method Section 4 5 ...
Page 92: ...68 Precautions When Replacing the PT Section 5 4 ...
Page 98: ...74 General Specifications Appendix A ...
Page 99: ...75 Appendix B Dimensions 75 50 176 223 75 Four M4 70 5 16 5 ...
Page 102: ...78 Types of Memory Appendix C ...
Page 107: ...83 Recommended Enabling Circuits Appendix D Program Example ...
Page 108: ...84 Recommended Enabling Circuits Appendix D ...