Document UT-MT-0428
Page 29 of 35
Edition 11/03/2014
Supersedes edition 04/30/2012
INSET RUNWAY EDGE LIGHT SLRE
INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
4.4.1
Removing the Prism
Remove the fixture from the base and open it following instructions of
“Removing
and Opening the Light Unit From the Base”
.
Clean out possible pieces of the old prism and all accumulated debris from the inside.
Remove the filter assembly (Figure 20 - n°7) unscrewing the relevant screws HSCH
M5x10 (Figure 20 - n°8); unscrew the three screws HSFH M5x12 (Figure 20 - n°6) and
remove the mounting plate (Figure 20 - n°5). Then remove the old prism and the
gasket, carefully clean the prism seat by scraping and taking care not to damage the
relevant walls.
4.4.2
Installing the New Prism
Place a new gasket (Figure 20 - n°2) in the prism cavity on the dome, then position
and press by hand the prism (Figure 20 - n°3) in the relevant seat and place a new
prism nylon gasket in the back side of the prism (Figure 20 - n°4).
Then fasten the mounting plate (Figure 20 – n°5) with the three relevant screws HSFH
M5x12 (Figure 20 - n°6); tightening torque is 2.5 Nm. Inspect all components inside
the fixture for damages or signs of corrosion. Replace all necessary components.
Close the light fixture following instructions of paragraph
“Closing the Fixture”,
“Leakage Test”
and
“Reinstalling the fixture”
.
Figure 21 - Prism Replacement
4.5
FILTER REPLACEMENT
Remove the fixture from the base and open it following instructions of
“Removing
and Opening the Light Unit From the Base”
.
It is highly recommended to do a complete overhaul of the fixture. Contact OCEM -
ENERGY TECHNOLOGY for any suggestion.
