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MONITORING
®
Liqui-tect 300
INSTALLATION MANUAL
Point Leak
Detection
Sensor
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TABLE OF CONTENTS INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 EXTERIOR DIMENSIONS AND MOUNTING DETAILS. . . . . . . . . . . 1 PLACEMENT ON SUBFLOOR UNDER COOLING SUPPORT EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 WIRING TO A LIEBERT ENVIRONMENTAL UNIT . . . . . . . . . . . . . 3 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 i
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Introduction ® Liebert Liqui-tect Leak Detection Sensors install quickly and work simply for reliable detection of leaks. The Liqui-tect 300 Sensor should be placed at critical points on the floor. Two corrosion-resistant, gold-plated probes sense the presence of aqueous liquids. When a leak is detected, the Liqui-tect 300 sensor generates an alarm signal at the Liebert environmental unit. NOTE: This sensor can provide an alarm signal only to a Liebert envi- ronmental unit; it should be con
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Placement on Subfloor Under Cooling Support Equipment (Other applications such as drip pans and ceiling pipe trays can be monitored) To a Liebert environmental unit Leak detection zone (directly beneath unit) LT300 As shown above, the Liqui-tect 300 (LT300) may be placed on a sub- floor within the leak detection zonethe area directly beneath the unit being protected or other areas such as the unit drip pan or ceiling pipe trays. The LT300 is a two-wire connection to the Liebert environme
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Wiring to a Liebert Environmental Unit The LT300 has two wires for connection to a Liebert environmental unit. Note: This sensor should be connected only to a Liebert envi- ronmental unit. Figure 1 LT300 to Liebert environmental units Liebert Deluxe System/3, Challenger, LT300 Himod or Mini-Mate2 (8 ton) Environmental unit Orange wire 24 (24V) Brown wire 51, 55 or 56 LT300 Liebert Mini-Mate2 (1 to 5 ton) Environmental unit Orange wire TB1-1 (24V) Brown wire TB1-2 or TB1-3 You can wire up to
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Troubleshooting Under normal conditions (no leaks), the LT300 probes create an open in-line switch. When a leak is detected (alarm condition), the switch closes. To determine whether the LT300 is working properly, perform the fol- lowing test: 1. Provide one lead of a 24VAC source to the LT300 orange wire. Con- nect one lead of an AC voltmeter to the LT300 brown wire and the second lead of the AC voltmeter to the second lead of the 24VAC source. 2. Read the AC voltmeter to check that there i
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MONITORING ® Liqui-tect 300 INSTALLATION MANUAL Technical Support/Service The Company Behind the Products Web Site www.liebert.com With over a million installations around the globe, Monitoring Liebert is the world leader in computer protection 800-222-5877 systems. Since its founding in 1965, Liebert has monitoring@liebert.com developed a complete range of support and Outside the US: 614-841-6755 protection systems for sensitive electronics: Single-Phase UPS 800-222-5877 Environmental systems
