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SECTION 5. PREVENTIVE MAINTENANCE AND TROUBLESHOOTING
A periodic inspection and preventive maintenance program will significantly improve the
performance and longevity of this equipment. The main items of
routine maintenance are:
periodic inspection,and mirror cleaning. Maintenance of the system is otherwise limited to
that associated with troubleshooting the system.
5.1
PERIODIC INSPECTION
GENERAL. Perform periodic inspection of the system annually, or at intervals as
required by the service environment and extent of use. Inspection
consists of the following steps:
Visually check for damage of system components, with particular attention
given to:
cables and connectors
0-rings and gaskets
front panel switches and indicators
system optics
mounting hardware
Clean interior and exterior of all components, and tighten loose knobs and
hardware, as required.
Clean and lubricate 0-rings and gaskets with silicon grease. If necessary,
replace
any worn or damaged 0-rings or gaskets, or other components.
5.2 CLEANING SYSTEM OPTICS
.
The cleaning rate for the mirror is a direct function of the contaminant level of the air of
the operating environment. In time, the REBALANCE LED will stay lit after balancing.
This indicates that the mirror is getting dirty. Eventually it will get dirty enough that the
SERVICE MIRROR LED will light and the mirror must be cleaned to restore proper
operation. To clean the mirror:
1.
Remove the four screws from the top of the sensor and set lid aside.
2.
Unscrew two screws holding optics block on using supplied ball driver and
lift out optics block, exposing mirror.
3.
Clean the mirror using supplied cotton swab moistened with an approved
solvent, such as acetone followed by water. A few light swipes is sufficient;
use only enough solvent to wet and clean the mirror.
4.
Reassemble the sensor by replacing optics block and lid.
Содержание 1011C
Страница 7: ...7 C B A Figure 1 Dew Point Hygrometer System shown with optional cables...
Страница 9: ...9...
Страница 12: ...12 Figure 3 Dew Point Sensing Unit A B C...
Страница 14: ...14 Figure 4 Control Indicator Unit F A B C D E...
Страница 17: ...17 Figure 6 Power Unit Internal...
Страница 23: ...23 Figure 9 Flow Test Fixture Hookup...
Страница 28: ...28 FIGURE 10 System Response Characteristics...
Страница 31: ...31 Recommended cable Belden YQ27540 Figure 11 Wiring Diagrams...
Страница 32: ...32 Recommended cable Belden YQ27540 Wiring Diagrams Continued...
Страница 33: ...33...
Страница 34: ...34 Figure 13 Vapor Pressure e vs Dew Point TD or Saturation Vapor Pressure es vs Temperature T...
Страница 36: ...36 Figure 15...
Страница 37: ...37 Figure 16 Aspirating Fixture Hookup...
Страница 38: ...38 Figure 17 1011C Hygrometer Complete...
Страница 40: ...40 Table 2 Dew Point to Frost Point Conversions...
Страница 41: ...41 Table 3 Dew Point Error due to Pressure Change in Sampling System...
Страница 47: ...47...
Страница 48: ...48...