Flash Technology VANGUARD FTS 270, Справочное руководство

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Flash Technology Revision A - 2/13/2020 33
PHOTODIODE MOUNTING
Use the following guidelines for installing the photodiode:

Locate the photodiode where it has an unobstructed view of the polar sky*.

It must not view direct or indirect artificial light.

The photodiode should be supported vertically at the top end of a vertical length of rigid conduit to
prevent moisture intrusion.

Ensure ½” flexible conduit is used for the PHD wire that routes to the FTC enclosure (bottom of the rigid
conduit).
*If possible, mount the photodiode in a location that will allow easy access for future testing.
FH 372 INSTALLATION
FH 372 MOUNTING
Flash Technology recommends the installation of one or more lightning rods near the uppermost flashhead(s). The
copper lightning rods should extend a minimum of 36” above the height of the flashhead and a minimum of 18”
horizontally away from the flashhead.
The flashhead is mounted to the tower pedestal utilizing ½ inch galvanized or stainless steel hardware. Four
mounting holes are provided on the flashhead base (Figure 2-13). The mounting holes will align with most tower
pedestals. The flashhead must be installed level to maintain light output in accordance with FAA requirements.

Verify that the mounting surface is free of debris.

Align the four mounting holes in the base of the beacon with the holes in the tower or pedestal’s
mounting plate.

Leaving the hardware assemblies loose, secure the beacon with the provided ½ inch stainless steel or
galvanized hardware (Part # 5991740).

With the light engine secured by the two outer latches, place a level on the beacon’s top plate and verify
that it is level in two directions. Note: Flash Technology’s “T”- Level (Optional Part # 11000013455) has
two vials to simplify installation.

If the beacon is not level, add stainless steel shim material or washers (stainless steel or galvanized) as
necessary to level the beacon.

Tighten the hardware once the beacon is level in both directions. Verify that the beacon is still level once
the hardware is fully tightened.