Document UT-MT-0573
Page 24 of 28
Edition 03/13/2012
Supersedes edition 02/09/2010
SLTH – SEMI-FLUSH THRESHOLD LIGHT
INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
Any O-Ring that is stretched, torn, has a permanent set or some other defect, which would
prevent it from forming a water-tight seal must be replaced with a new O-Ring.
Remove the fixture from the base and open the fixture, as described at paragraph 4.1.
Light assembly is equipped with the following gaskets:
•
O-Ring between dome and lower cover (fig.1 - n°20);
•
O-Ring around the dome (fig.1 - n°19);
•
O-Ring between fixture and shallow base (fig.7 – n°7);
•
prism gasket mounted between prism and the dome (fig.1 - n°4). As much as regards
prism gasket replacement see par 4.3.
5.6.2. O-Ring replacement
Remove the old O-Ring from the groove and clean the flange mating surfaces and the
groove, scraping carefully. Take care not to damage the mating surface and the bottom
and sides of the groove. Position it in the centre of its groove and push it inside.
NOTE 1: Make sure that the proper O-Ring is re-inserted into the groove.
NOTE 2: The seat of an O-Ring gasket is dimensioned to allow the proper positioning
when compressed between the mating surfaces. Screws properly tightened are
important in obtaining a complete seal.
TIGHTENING TORQUE
lower cover HSCH M5x16
2.5 Nm
44 Nm (for shallow base)
fixture locking screw
25 Nm (for L-868 base, size B)
5.7.
CABLE LEAD WITH PLUG
5.7.1. Removing the cable lead with plug
Remove the fixture from the base and open the fixture, as described at paragraph 4.1.
Inside the lower cover, disconnect the pair of wires with faston terminals from the
insulating strip of the damaged cable lead. Remove the faston terminals by cutting the
cables, unscrew the gland and pull out the cable lead with gland gasket.
5.7.2. Installing the new cable lead with plug
Insert on the new power supply cable lead with plug the new gland nut with teflon washer,
metal washer and then the new gland gasket 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.
Place the gland gasket inside its seat and tighten the gland nut. Restore internally the
electrical connections.
Reassembly the fixture following instructions of par 4.2.
