Light Engineered Displays WD-SD Series - Spot Detector - Manual

Introduction
A Division of:
Light Engineered Displays, Inc.
109 Portwatch Way
Wilmington, N.C. 28412
Phone: (800) 251-2512
Fax: (800) 251-9878
Internet: www.ledinc.com
Email: [email protected]
WD-SD
SERIES
WD-SD
SPOT DETECTION
The AquaALERT spot type Water Detector, series
WD-SD, is specifically designed for water leak
detection and water level monitoring. A special
low voltage circuit uses very little current to detect
the presence of conductive fluids. Typical installa-
tions include computer room subfloor areas,
telephone equipment rooms, basements, bath-
room units, and areas adjacent to water tanks or
piping.
Operation
A WD Series detector is available for use with
either 12 vdc or 24 vdc circuits. The detector has
a Form C contact and is intended to be monitored
by a remote alarm panel, or a graphic annunciator
panel. The sensing probe consists of two conduc-
tors woven within a polyester cable. Several
drops of water, soaking into the cable, is all that is
needed to operate the detector. Once operated,
the Form C contact will change state to activate
the remote alarm panel. After the probe has
dried-out, the contact will return to normal. Con-
tact is rated for one amp, at 120 vac.
Installation and Testing
Place the detector in the area where water leak is
anticipated. Remove the top for access to the
terminal strip located inside unit. Connect to
alarm panel or annunciator as per the diagram
shown on the reverse side. When connections
have been made, test the unit by using a jumper
to simulate water reaching the probe. After proper
operation is verified, replace top and secure with
screws provided. If placement is to be perma-
nent, secure the detector to the floor with silicon
adhesive. Fasten the probe to the floor using the
self-stick cable clamps provided. Unit is designed
for cable entry. When conduit is required, set a
J-box adjacent to the detector and connect with a
short length of cable. Wiring must conform to
local codes.
Specifications
WD-SD/12
 Voltage: 12 VDC
 Probe current (Max): .8 ma
 Total Current Draw (Max): 40 ma
 Relay Rating: 1 amp
WD-SD/24
 Voltage: 24 VDC
 Probe Current (Max): 2 ma
 Total current Draw (Max): 28 ma
 Relay Rating: 1 amp
*NOTE: No current draw until water is detected.
12/24 VAC and audible models are available.