Emerson 460 manual

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Table of contents for the manual

  • Page 1

    Infra struc ture Mana geme nt & Monit oring For Bu siness -Critic al C ontinuity™ Lieber t Liqui -tec t ® 460 Installa tion Manu al - Z one L eak Det ection Sens or[...]

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    i T ABLE OF CONTENTS I NTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 E XTERIOR D IMENSIONS AND M OUNTING D ET AILS . . . . . . . . . . . 1 P LACEMENT ON S UBFLOOR U NDER C OOLI NG S UPPORT E QUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 P OWER W IRIN G . . . . . . . . [...]

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    1 Introduction Liebert Liqui-tect ® Leak Detection Sensors install quickly an d work simply for reliable detection of condu ctive aqueous fluid leaks. The Liqui-tect 460 Sensor provides zo ne protecti on using the easy-to- install and quick-drying Liebert leak detection cable. LEDs located on the top cover of the module provid e visual indication.[...]

  • Page 6

    2 Placement on Subfloor Under Cool ing Support Equipment (Other applications such as long perimeter walls can be monitored) As shown above , the Liqui-tect 460 (LT460) may be placed on a sub- floor, where it is connected to the leak detection cable t hat surrounds the leak detection zone —the area directly beneath the unit being protected or othe[...]

  • Page 7

    3 Power Wiring The LT460 is rated for 24 VAC, 50/60 Hz and 0.12 amp. Figure 1 24V from Liebert environment al units to L T460 Figure 2 24V from transformer to L T460 Power Wi ring 24V from Li ebe rt En viro nmenta l Uni t to LT46 0 Lieber t Deluxe Sys /3, Challeng er, Him od or MM2 (8 Ton) TB1 T5 (24V) G5 (Ground) LT460 TB1 TB1- 1 TB1- 2 24V from T[...]

  • Page 8

    4 Wiring to Auxiliary Alarm Panels The LT460 has two Form-C dry contac t alarm output contacts (TB2 & TB3). Each contact is rated for 24 VAC at 3 amp. Figure 3 L T460 to Liebert environment al unit s Figure 4 L T460 to Liebert cont act monitor p anel Liebert Deluxe Sys /3, Challenger, Him od or MM2 (8 To n) 24 (24V) 51 LT460 TB2 TB2-2 (C) TB2- [...]

  • Page 9

    5 Configuration Switch Settings A four-position DIP switch is used to select two alarm (filter) delays and three mutually exclusive alarm modes. The switches are located next to the wiring termination blocks. Leak Detect Filter Delay (SS1) SS1 selects the leak detect filter delay , the interval for which a leak condition must b e continuously detec[...]

  • Page 10

    6 Alarm Retest Delay (SS3) SS3 selects the alarm retest delay , the setting in which an alarm is latched and reteste d every hour. OFF = Non-latching (default) ON = Latching-retest each hour The factory default is OFF = Non-latching. If SS3 = ON and a leak is detected, the alarm conditi on is latche d, the sensor goes into a “sleep” mode and po[...]

  • Page 11

    7 LED Operation System Normal (Green): • ON contin uously whe n power is applied to sensor. Alarm Pending (Y ellow): • ON continuously duri ng leak detect filter delay and cable fault delay. • FLASHING (with Leak Detected LED) to indicate cable fault cond ition. Leak Detected (Red): • FLASHING to indicate leak detected alarm. • FLASHING ([...]

  • Page 12

    8 Inst allation of Leak De tection System Cable 1. Attach the leak detection cable to the LT460 module. 2. Activate module and test detect ion cable. (Touch detection cable with a clean moist cloth or paper towel. ) Dry detection cable to remove the alarm condition. (A hair dryer can be used to speed up the drying.) Note: Do not try to saturate the[...]

  • Page 13

    9 4. The installation o f th e hold-down clips should be in pairs according to Figure 5 with the follow ing considerations: Figure 5 Inst a llation of hold-down clip s in pairs a. On e pair every 6 to 8 feet in stra ight patterns (see Figure 6 ). b. On e pair every 3 to 4 feet in circular patterns (see Figure 7 ). c. One pair at the beginni ng an d[...]

  • Page 14

    10 Leak Detection Kit In st allation Scenarios Scenarios Upflow Unit Detection around entire unit Up flow Unit Detection on sides and in front of unit Downflow Unit Detection around entire unit Downflow Unit Detection on sides and in front of unit Distance from unit Distance: In back On sides In front 2 ft 2 ft 2 ft No cable behind 2 ft 2 ft 1 ft 1[...]

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    Ensuring The High A vaila bility Of Mission-Critic al Dat a And App lic ations. While every precaution has been tak en to ensure the accuracy and comple teness of this lite rature, Lie bert Corporation assumes no responsibility and disclaims all liability for damages resulting from u se of this inform ation or for any e rrors or omissions . © 2010[...]