Cool Air LBW-50-RLV Series Manuel utilisateur

LBW-50-RLV-%

Ammonia Leak Detector

For vent line leak detection

LBW-50-RLV-%

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Rev. 1.0 10/14/2022

CAUTION & SYMBOL DEFINITIONS:

CAUTION: Gives detailed description of different situations

to avoid or not avoid for the proper operation of the

equipment.

WARNING: RISK OF ELECTRIC SHOCK. DO NOT

REMOVE COVER. NO USER SERVICEABLE

PARTS INSIDE. REFER TO QUALIFIED SERVICE

PERSONNEL.

AVIS: RISQUE DE CHOC ELECTRIQUE. NE PAS

ENLEVER LE COUVERCLE. AUCUN ENTRETIEN

DE PIECES INTERIEURES PAR L'USAGER.

CONFIER L'ENTRETIEN AU PERSONNEL

QUALIFIE.

LBW-50-RLV-%

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Rev. 1.0 10/14/2022

TABLE OF CONTENTS

CAUTION & SYMBOL DEFINITIONS .................................................... 2

IMPORTANT—READ THIS FIRST.......................................................... 4

CAUTIONS .......................................................................................................4

INTRODUCTION......................................................................................... 5

STANDARD FEATURES ............................................................................ 5

PARTS DESCRIPTION ............................................................................... 6

FRONT PANEL DISPLAY ..................................................................................6

AMMONIA SENSOR ..........................................................................................6

FRONT PANEL-MOUNTED CIRCUIT BOARD ....................................................7

SERVICE SWITCH (SERVICE MODE)................................................................7

ADJUSTABLE ALARM POTENTIOMETER..........................................................8

LED TEST BUTTON.........................................................................................8

LOCAL/REMOTE JUMPERS..............................................................................8

RELAY LED’S.................................................................................................8

ENCLOSURE-MOUNTED CIRCUIT BOARD .......................................................8

RELAYS ...........................................................................................................9

RELAY STATUS LEDS...................................................................................10

EXTERNAL CONNECTIONS ............................................................................10

WIRING DIAGRAM:.......................................................................................11

INSTALLATION AND SETUP................................................................. 13

REMOTE SENSING .........................................................................................15

REMOTE ALARM INSTALLATION ..................................................................15

AMMONIA LEAK INDICATION .......................................................................16

TESTING AND CALIBRATION ..............................................................16

TESTING.....................................................................................17

CALIBRATION ..........................................................................17

TECHNICAL SUPPORT ........................................................................... 18

WARRANTY................................................................................................ 19

LBW-50 SPECIFICATIONS ..................................................................... 20

LBW-50-RLV-%

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Rev. 1.0 10/14/2022

IMPORTANT READ THIS FIRST

PLEASE READ AND UNDERSTAND THIS SECTION

BEFORE INSTALLING AND OPERATING THE LBW-50

DETECTOR

CAUTION:

Operating the detector in lower temperatures will slow the detector

response rate, and high humidity or excessive heat can cause the

“Minimal Concentration” LED to light.

After applying power, test the detector to ensure it is operating

correctly. Be sure the detector has been powered on for at least 20

minutes before testing.

LBW-50-RLV-%

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Rev. 1.0 10/14/2022

INTRODUCTION

The Cool Air Incorporated LBW-50-RLV-% is an AC/DC powered

state-of-the-art ammonia leak detector that detects and indicates

ammonia concentrations of .1% to 10%. It comes equipped with a

catalytic bead, long-life ammonia sensor that has a quick and accurate

response to ammonia concentrations.

Outputs are three dry contact relays.

STANDARD FEATURES

The LBW-50-RLV-% comes with these additional standard features:

•Adjustable Alarm set point.

•Normally open, normally closed contacts for communicating

with common industry alarm systems.

•A NEMA 4X, UL-listed enclosure.

•Spare contacts for operating auxiliary equipment such as

exhaust fans, king valves, compressors, and additional

alarm systems.

•Service mode which allows for testing and calibrating

without setting off the alarms.

LBW-50-RLV-%

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Rev. 1.0 10/14/2022

PARTS DESCRIPTION

Front Panel Display

The front panel display is comprised of a series of labeled indicating

LED’s. The LEDs provide an indication of ammonia concentration,

alarm status, power supply, and service mode at a glance.

For information on how the display indicates ammonia

concentrations, see the sections on ammonia leak indication

Ammonia Sensor

The detector comes with a catalytic bead, long-life sensor that has a

high sensitivity to amine compounds and a quick response to

concentrations of ammonia.

If a new ammonia sensor is installed, the detector must be re-

calibrated. See the “TESTING AND CALIBRATION” section.

LBW-50-RLV-%

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Rev. 1.0 10/14/2022

Front Panel-Mounted Circuit Board

The front panel-mounted circuit board contains the controls necessary

for adjusting and operating the detector. Each control is described in

detail in the following pages. When the detector enclosure is open,

this circuit board is on the left, attached to the front panel.

Service Switch (Service Mode)

The detector can be set to one of two modes: normal operating mode

or service mode. The detector is in normal operating mode when the

service Switch is in the “Normal” position. When the service switch

is in the “Service” position, the detector continues to function as

usual, however the alarm, pre-alarm, and auxiliary relays are

disabled. This allows the detector to be serviced, tested, and

calibrated without tripping the alarm relays and setting off the alarms.

LBW-50-RLV-%

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Rev. 1.0 10/14/2022

NOTE: When the detector is in the service mode, the

“Service” LED on the front panel flashes yellow. After 30 minutes in

service mode, the “Minimal Contamination” and “Early Warning”

LEDs will also be lit. This is done as a reminder to set the service

switch back to the “Normal” mode.

Adjustable Alarm Potentiometer

There is one adjustment potentiometer that is provided to set the

Alarm set point. The Pre-Alarm (Early Warning) is adjusted at the

factory. The Alarm set point is also pre-set at the factory but is field

adjustable. The adjustment procedure is in the “INSTALLATION

AND SET-UP” section.

LED Test Button

Pressing the momentary LED Test button will cause all LEDs to light

to up and all three relays to de-energize to confirm that they are

functional. This also allows testing of connected devices with out the

need to expose the sensor to ammonia gas.

Local/Remote Jumpers

JMPR1 and JMPR2 are not used in this device and must connect pins

2 to 3, the far-right position.

Relay LED’s

Two green LEDs indicate that the relays are energized. LED 9, to the

left of the relays, indicates that Alarm and Auxiliary relays are

energized. LED 10, to the right of the relays indicates that the Pre-

Warning relay is energized.

Enclosure-Mounted Components

The enclosure-mounted components include an AC to DC converter

for 100 to 240 VAC, 50/60 Hz operation. An optional back-up

battery can be installed in the location shown and wired to the front-

panel circuit board “Battery” terminal.

LBW-50-RLV-%

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Rev. 1.0 10/14/2022

Power Supply

WARNING: RISK OF ELECTRIC SHOCK. DO NOT

REMOVE COVER. NO USER SERVICEABLE

PARTS INSIDE. REFER TO QUALIFIED SERVICE

PERSONNEL.

AVIS: RISQUE DE CHOC ELECTRIQUE. NE PAS

ENLEVER LE COUVERCLE. AUCUN ENTRETIEN

DE PIECES INTERIEURES PAR L'USAGER.

CONFIER L'ENTRETIEN AU PERSONNEL

QUALIFIE.

Power for the LBW-50 must be a nominal 100 to 240 Volts AC,

50/60 Hz, 16 VAC, or 24 VDC. The 100 to 240 Volts AC power is

connected to the AC to DC converter mounted on the back panel of

the enclosure. The 16 VAC or 24 VDC power is connected directly

to the “Power” terminals on the upper left-hand corner of the front

panel mounted circuit board. A safety ground terminal is also

provided on the back panel.

Relays

The detector has three miniature printed circuit board relays: The

Alarm, Pre-Alarm (Early Warning), and the Auxiliary relays. The

Auxiliary relay operates at the same time as the Alarm relay. In the

normal operating mode, the relays are energized in a normally open

state. If a loss of power to the detector occurs, the relays will de-

energize and the alarms, if connected, will activate.

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