Document UT-MT-0779_EN
Page 23 of 37
Edition 23/04/2019
Supersedes edition 06/03/2019
LED INSET RUNWAY EDGE LIGHT LIRE
INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
3.3
INSTALLING THE LIGHT UNIT ON L-868 BASE, SIZE B
Install L-868 light base in compliance with FAA AC 150/5340-30.
The fixture is shipped complete (including the lamps) and is ready for installation as
received, in case of 8” fixture it shall be complete of adaptor ring.
Be sure the flange on the transformer housing is clean and the O-Ring (Figure 15 –
n°2), if used, is in place in the O-Ring groove.
Connect the plug of the fixture to the receptacle of the isolating transformer inside
the deep base. Connect the grounding wire of the fixture to the grounding wire of the
deep base (faston connection). Then press the fixture firmly and evenly by hand onto
the base flange. Secure the fixture to the base by using the six locking screws
complete with washers, supplied with the base. One drop of anaerobic adhesive,
medium type (e.g. Loctite 243) should be applied to the screws before installation;
tightening torque is 35 Nm.
The fixture is subject to optical misalignment and/or mechanical damage if not
properly seated.
1. L-868 base
2. O-Ring between
fixture and base
Figure 15 – Gaskets for L-868 base
3.4
SECONDARY WIRING
The IEC 61823 International Standard (AGL series transformers) states at para. 4.6
that “if an earthing connection is provided, it shall be connected to the larger socket
of the transformer secondary connector.”
This means that, when a fixture is directly connected to the relevant isolation
transformer (provided with earthing connection), the fixture secondary side is wired
to the grounding network through the larger pin of fixture plug.
