Document UT-MT-0693_EN
Page 30 of 33
Edition 15/01/2020
Supersedes edition 08/01/2019
LED INSET HELIPORT LIGHT LHI
INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
4.7.2
Installing the new cable lead with plug
Insert on the new power supply cable lead with plug (Figure 26
–
n° 1) the new gland
nut (Figure 26
–
n° 2) with teflon washer (Figure 26
–
n° 3), metal washer (Figure 26
–
n° 4) and then the new gland gasket (Figure 26
–
n° 5) so that the available length of
cables outside the fixture is approx. 50 cm when re-assembled. Pull both cables
through the suitable hole provided in the bottom of the lower cover; then splice each
cable for a length of approx. 7 mm and clamp the female faston terminal to the cable
(Figure 26
–
n° 6) and the male ones to the electronics wires.
Place the gland gasket inside its seat and tighten the gland nut. Restore internally the
electrical connections.
Figure 26 - Cable Lead With Plug
Close the light fixture following instructions of paragraph
“Closing the Fixture”,
“Leakage Test”
and
“Reinstalling the fixture”
.
4.8
PRESSURE VALVE
If a leakage is found through the pressure valve during an air pressure test, check
carefully where the leakage happens. If the leakage is between the valve (Figure 27 -
n°2) and the lower cover (Figure 27 - n°1), check the tightening of the valve body to
the lower cover from the outside of the fixture.
In case the pressure valve needs replacing operate as follows, considering the fixture
already opened following instructions of
“Removing and Opening the Light Unit From
the Base”
. Unscrew the valve body with gasket from the outside of the lower cover
(Figure 27 - n°1) by clamping the hexagonal end section of the valve body. Screw the
new valve on the lower cover; tightening torque is 0.35 Nm. Check the valve core
(Figure 27 - °4) is tightened to the valve body (Figure 27 - n°2) and then screw its cap
(Figure 27 - n°3).
Reassembly the light unit following instructions of paragraph
“Closing the Fixture”,
“Leakage Test”
and
“Reinstalling the fixture”
.
