Document UT-MT-0780_EN
Page 6 of 39
Edition 03/10/2015
Supersedes edition 03/11/2014
LED INSET THRESHOLD AND THRESHOLD WING BAR LIGHT
LRTH04
INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
4.4
PRISM REPLACEMENT .................................................................................................. 30
4.4.1
Removing the Prism ............................................................................................ 30
4.4.2
Installing the New Prism ..................................................................................... 30
4.5
LED MODULE REPLACEMENT ....................................................................................... 31
4.6
ELECTRONICS REPLACEMENT ....................................................................................... 32
4.7
ARCTIC KIT REPLACEMENT ........................................................................................... 33
4.7.1
Thermostat .......................................................................................................... 33
4.7.2
Heater.................................................................................................................. 33
4.8
GASKETS........................................................................................................................ 34
4.8.1
Gasket examination ............................................................................................ 34
4.8.2
O-Ring replacement ............................................................................................ 35
4.9
CABLE LEAD WITH PLUG ............................................................................................... 36
4.9.1
Removing the cable lead with plug ..................................................................... 36
4.9.2
Installing the new cable lead with plug .............................................................. 36
4.10
PRESSURE VALVE .......................................................................................................... 37
4.11
CLEANING ..................................................................................................................... 37
4.12
MONITORING ............................................................................................................... 37
5
TROUBLESHOOTING ..................................................................................................... 39
INDEX OF FIGURES
Figure 1 – 12” Dome outside view .................................................................................................... 9
Figure 2 – Lower Cover Outside View ............................................................................................. 10
Figure 3 – Lower Cover Inside View ................................................................................................ 11
Figure 4 – Wiring Diagram ............................................................................................................... 11
Figure 5 – Exploded View ................................................................................................................ 12
Figure 6 – Part List ........................................................................................................................... 13
Figure 7 - Complete P/N identification............................................................................................ 13
Figure 8 – Standard 12” shallow base ............................................................................................. 14
Figure 9 – Pavement Boring, Sawcutting and Joint Intersection Details ........................................ 17
Figure 10 – Example of Light Unit Configuration ............................................................................ 19
Figure 11 – Gaskets for 12” shallow base ....................................................................................... 22
Figure 12 – 12” shallow base for side or bottom ducts (method “B”) ............................................ 23
Figure 13 – Shallow base installation details .................................................................................. 23
Figure 14 – Optical device (refer to the manual UT-MT-0485 for further information) ................ 24
Figure 15 – Gaskets for L-868 base ................................................................................................. 25
Figure 16 - Lower Cover Fixing Screws ............................................................................................ 28
Figure 17 - Lower Cover with Pressure Valve .................................................................................. 28
Figure 18 – Fixture Gaskets ............................................................................................................. 29
Figure 19 - Prism Cleaning ............................................................................................................... 30
Figure 20 - Prism Replacement ....................................................................................................... 31
Figure 21 – LED Module Replacement (Threshold) ......................................................................... 32
Figure 22 – LED Module Replacement (Threshold Wing Bar) ......................................................... 32
Figure 23 – Wiring diagrams for the heaters .................................................................................. 34
