
Document UT-MT-0780_EN Page 6 of 39
Edition 03/10/2015 Supe sedes 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 P ism ............................................................................................ 30
4.4.2 Installing the New P ism ..................................................................................... 30
4.5 LED MODULE REPLACEMENT ....................................................................................... 31
4.6 ELECTRONICS REPLACEMENT ....................................................................................... 32
4.7 ARCTIC KIT REPLACEMENT ........................................................................................... 33
4.7.1 The mostat .......................................................................................................... 33
4.7.2 Heate .................................................................................................................. 33
4.8 GASKETS........................................................................................................................ 34
4.8.1 Gasket examination ............................................................................................ 34
4.8.2 O-Ring eplacement ............................................................................................ 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
Figu e 1 – 12” Dome outside view .................................................................................................... 9
Figu e 2 – Lowe Cove Outside View ............................................................................................. 10
Figu e 3 – Lowe Cove Inside View ................................................................................................ 11
Figu e 4 – Wi ing Diag am ............................................................................................................... 11
Figu e 5 – Exploded View ................................................................................................................ 12
Figu e 6 – Pa t List ........................................................................................................................... 13
Figu e 7 - Complete P/N identification............................................................................................ 13
Figu e 8 – Standa d 12” shallow base ............................................................................................. 14
Figu e 9 – Pavement Bo ing, Sawcutting and Joint Inte section Details ........................................ 17
Figu e 10 – Example of Light Unit Configu ation ............................................................................ 19
Figu e 11 – Gaskets fo 12” shallow base ....................................................................................... 22
Figu e 12 – 12” shallow base fo side o bottom ducts (method “B”) ............................................ 23
Figu e 13 – Shallow base installation details .................................................................................. 23
Figu e 14 – Optical device ( efe to the manual UT-MT-0485 fo fu the info mation) ................ 24
Figu e 15 – Gaskets fo L-868 base ................................................................................................. 25
Figu e 16 - Lowe Cove Fixing Sc ews ............................................................................................ 28
Figu e 17 - Lowe Cove with P essu e Valve .................................................................................. 28
Figu e 18 – Fixtu e Gaskets ............................................................................................................. 29
Figu e 19 - P ism Cleaning ............................................................................................................... 30
Figu e 20 - P ism Replacement ....................................................................................................... 31
Figu e 21 – LED Module Replacement (Th eshold) ......................................................................... 32
Figu e 22 – LED Module Replacement (Th eshold Wing Ba ) ......................................................... 32
Figu e 23 – Wi ing diag ams fo the heate s .................................................................................. 34