RLE LDZ4 - Manual (Page 7)

User Guide: LDZ4 Chapter 1: Product Overview
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CHAPTER 1: PRODUCT OVERVIEW
1-1 DESCRIPTION
The LDZ4 is a complete monitoring system that detects and reports the presence of water and other
conductive liquids. The LDZ4 couples RLE’s water leak detection cable with an advanced control head to
monitor four individual zones. When a conductive liquid comes in contact with the sensing cable, an alarm
sounds and the leak and summary alarm relays activate. The LED that corresponds with the appropriate
zone also illuminates.
The LDZ4 is a supervised system - it continuously monitors the cable for leaks and cable integrity. A cable
break causes a cable fault indication. An alarm sounds and the appropriate cable fault relay and the
summary alarm relay activate. The appropriate cable fault LED is also activated.
1-2 LDZ4 FRONT PANEL INDICATORS
1-2.1 Leak Detected LEDs
One red LED for each zone. Flashes quickly if a leak is detected in the zone. Flashes slowly if the leak
goes away before the system is reset. On solid once the alarm is acknowledged - the Quiet button is
pushed.
1-2.2 Cable Fault LEDs
One yellow LED for each zone. Flashes quickly if a cable fault is detected in the zone. Flashes slowly
once the fault clears. On solid once the alarm is acknowledged - the Quiet button is pushed.
1-2.3 Power LED
On (green) as long as power is on.
1-2.4 Audible Alarm
Activates when a leak or cable fault is detected. Silenced with the Quiet switch.
Reset Switch - Used to reset all alarms. If any alarms still exist after they are reset, the LEDs will turn on,
the audible alarm will sound, and the relays will activate.
1-2.5 Quiet Switch
The audible alarm is silenced, and any LED(s) in alarm will glow solidly. If the alarm goes away, the
LED(s) will flash slowly.
1-2.6 Test Switch
Lights each zone’s LEDs in sequence. The audible alarm will sound. If the switch is held for the entire test
sequence, the LEDs will glow solidly and all three relays will activate until the switch is released. The test
sequence will also cycle when the unit is powered on.
NOTE :
The LDZ4 produces an alarm in the following conditions:
• Leak Detected
• Cable Fault