Belfort AWOS, Maintenance Manual

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-41-
BELFORT
INSTRUMENT
Proprietary Information
16. If no replacement sensor is immediately available, remove the faulty sensor from the system.
17. Put the Belfort AWOS Alert in “Wind Direction Inoperable” mode by toggling the “ALERT
MESSAGE” toggle switch located on the lower half of the hinged tower section three (3)
times. Confirm the correct alert message is reported on the HHDU.
18. The Wind Direction will be reported by the system as ‘Not Available” until the replacement
sensor is installed.
19. If a system component has been determined to be faulty or suspect bad, go to Section 5.10
and follow those instructions.
20. After installation of a replacement sensor, perform the Annual Wind Direction Sensor
Verification Procedure detailed in section 5.6 of this manual.
21. Untie the rope and SLOWLY erect the tower to the vertical position and secure it by
installing and tighten-up (DO NOT OVER TIGHTEN) the three (3) tower-securing bolts.
NOTE: Be careful to avoid pinching the wires on the inside of the hinged Tower Section
when raising the tower.
22.
If the sensor is operational and maintenance tasks are complete, toggle the “ALERT
MESSAGE” switch 4 times to return the unit to service.
23. At the DATU display operator’s terminal, when all maintenance actions are complete, issue
another NOTAM advising users that “
Belfort AWOS maintenance activities were
completed, system has been returned to normal operation
.” The expiration date and
time of this NOTAM should coincide with the same expiration date and time of the previous
advisory NOTAM that was issued to put the system in the maintenance mode. Verify that
this NOTAM advisory is correctly displayed on the operator screen. Refer to the
"Belfort
AWOS Operator Manual" for instructions on how to enter and delete NOTAMs .
7.0
T
OOLS AND
T
EST
E
QUIPMENT
R
EQUIRED
1.
Common hand tools (i.e., wrenches, screwdrivers, nut drivers)
2. Digital multi-meter (DMM) Fluke 77 or equivalent
3. Notebook computer with DB9 serial interface
4. PROCOMM software, PROCOMM Plus, Datastorm Tech or equivalent
5. Portable pressure standard Model 760-16B with Current NIST Traceable Calibration
Certificate, (Paro-scientific, Inc or equivalent)
6. Visibility sensor calibration kit 32041, (Belfort Instrument Company)
7. Magnetic compass S&Y 183, Stocker and Yale or equivalent
8. Kestrel Model 3000 Wind Instrument with calibration kit
9. Scanner w/AC Adapter Radio Shack PRO 36/273-1455 or equivalent
10. Wire brush (Commercial)
11. Scraper, w/razor blade (Commercial)
12. Gloves, rubber (Commercial)
13. Techni-Tool TECH DUSTER inert dusting gas or equivalent
14. Battery Terminal cleaning brush (Sears P/N 00947697000 or equivalent)
15. Wooden tongue depressors (to be used to remove debris from DCP pressure ports)
8.0
K
EY
S
YSTEM
P
ERFORMANCE
P
ARAMETERS AND
E
XPECTED
S
ENSOR
O
UTPUTS
– Refer to the
appropriate sensor verification procedure as provided in section 5.0 of this manual.