Airport Systems
2.6.5Verify Photocell Operation Connected to Controller
1.Verify proper mounting and orientation of photocell. Photocell shall face toward the polar sky (e.g., North in the northern hemisphere), not toward the sun.
2.Set LOCAL / REMOTE switch to REMOTE.
3.Verify that the correct Mode status LED (DS25 - DS27 Figure
4.Completely cover photocell (use a glove or hat, for example).
5.Verify Night Mode status LED DS27 is lit red.
6.Verify all other LEDs are in normal operating condition.
7.Verify that the Tower Lighting System is operating in normal night mode per 2.6.4.3. (Steps 2 through 6 only)
8.Uncover the photocell to expose it to ambient light.
9.Verify Mode status LEDs are in normal status for current ambient light conditions (during normal daylight, DS25 shall be lit red and DS26 and DS27 shall be unlit).
2.6.6Verify Photocell Operation Not Connected to Controller
15.Disconnect connector TB2 from PCB1 in the Master Controller.
16.Verify all Flashhead LEDs (DS1 - DS24) are lit red.
17.Verify Photocell status LED DS28 (Figure
18.Verify Photocell alarm LED DS30 (Figure
19.Verify all Flashheads are operating in Day mode (maximum brightness). The Flashheads will very slowly drift out of sync.
20.Reconnect connector TB2 to PCB1 in the Master Controller.
21.Verify that the Flashhead Status LED for each Flashhead on the tower is lit green (including any AOL). Unused Flashhead status LEDs shall be off. (DS1 - DS24: Figure
22.Verify Photocell status LED DS28 (Figure
23.Verify Photocell alarm LED DS30 (Figure
If the system passed all of the tests in Sections 2.6.3 - 2.6.6 above, the Master Controller, photocell and tower wiring were installed properly and the system is ready
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