Belfort AWOS, Maintenance Manual

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BELFORT
INSTRUMENT
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B. Verify obstruction lighting is functional and repair or replace as needed

C. Check backup battery terminals for corrosion and clean as needed

D. Replace or repair parts as required
Damage Identified? Yes

No

6. Perform Annual Temperature/Dew Point sensor confidence validation (Refer to maintenance
manual section 5.3) Sensor P/N: ______________ Serial No. _____ Pass

Fail

7. Perform the Annual Wind Speed Sensor confidence validation (refer to Maintenance Manual
section 5.5) Sensor P/N: ______________ Serial No. _____ Pass

Fail

8. Perform the Annual Wind Direction Sensor confidence validation (refer to Maintenance
Manual section 5.6)
Sensor P/N: ______________ Serial No. _____ Pass

Fail

9.
Perform the Verification of the Belfort AWOS Atomic clock per the Verification Procedure
in
Maintenance Manual Appendix G.
Battery voltage within between 3.5v and 4.8v Pass

Fail

Clock is receiving WWVB Updates. Last update is with 5 days of current date.
Pass

Fail

PC Clock contains correct local date and time.
Pass

Fail

Review the past years maintenance log and verify that no replacement of the Atomic Clock was
made. If a replacement was made, verify that P/N and Revision installed is acceptable to current
authorized VDD baseline.
Yes

No

11. Perform the DCP UHF Data Radio Accuracy Test Section IV of Appendix E Belfort AWOS
Commissioning / Annual Inspection Procedure. Record the measured values:
Belfort AWOS UHF Data Radio Accuracy Checklist:
1. DCP Radio Serial Number:______________
2. DCP FCC Authorized Frequency: ___________________(467.850 MHZ)
3. DCP Freq. Deviation: _____________________________ (2.2 KHZ2+-0.5 KHZ)
4. DCP RF Output Power: ______________________Watts (.75 to 1.25 watts)
5. DCP RF Modulation: ________________________% (78 to 82%)
6. DCP VSWR: _____________________ (< 3.0:1)
7. DCP FCC Authorized Frequency: ___________________(467.925 MHZ)
8. DCP Freq. Deviation: _____________________________ (2.2 KHZ +-0.5 KHZ)
9. DCP RF Output Power: ______________________Watts (.75 to 1.25 watts)
10. DCP RF Modulation: ________________________% (78 to 82%)
11. DCP VSWR: _____________________ (< 3.0:1)
12.
Perform the Belfort AWOS VHF Radio Accuracy Test Section V of Appendix E Belfort
AWOS Commissioning / Annual Inspection Procedure. Record the measured values::