Cool Air LBW-50-RLV Series User manual

LBW-50-RLV-%
Ammonia Leak Detector
For vent line leak detection

LBW-50-RLV-%
Page 2
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
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-%
Page 3
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
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-%
Page 4
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
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-%
Page 5
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
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-%
Page 6
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
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-%
Page 7
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
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-%
Page 8
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
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-%
Page 9
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
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.

LBW-50-RLV-%
Page 10
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
Relay Status LED’s
Each relay has a surface-mounted LED associated with it that
indicates the status of the relay. A relay is energized (a non-alarm
condition) when its LED is lit (green), and de-energized (an alarm
condition) when the LED is not lit.
External Connections
Contacts for external connections:
•Auxiliary Relay contacts
•Alarm Relay contacts
•Pre-Alarm (Early Warning) Relay contacts

LBW-50-RLV-%
Page 11
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
Wiring Diagram: LBW-50
Installation wiring diagrams for the LBW-50.The 100 to 240 VAC
diagram is shown below, and the 24 VAC or 24 VDC diagram is on
page 12.

LBW-50-RLV-%
Page 12
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.

LBW-50-RLV-%
Page 13
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
INSTALLATION AND SETUP
Caution: Do not apply power to the detector until instructed to
do so.
When power is applied to the detector, may immediately go into
Alarm status and the LED’s will indicate a large ammonia
concentration. This is normal. When the sensor warms to normal
operating temperature (usually about a minute) the detector will
return to a non-alarm status. For this reason, the detector must be
placed in service mode before applying power to the detector to
avoid nuisance alarms.
Once the LED’s are no longer lit up, set the service switch back into
the normal mode.
The detector is tested, adjusted, and calibrated at the factory. To field
adjust the Alarm set point of the detector for a specific installation,
follow the steps below.
1. Open the detector enclosure and place the detector in service
mode by sliding the service switch to the “Service” position.
2. Apply power to the detector and allow the sensor to warm up to
normal operating temperature (at normal operating temperature,
all LEDs will be unlit).
3. Apply test gas of desired % Ammonia, balance air to the sensor
at .3L/min
4. Adjust the Alarm set point by adjusting the potentiometer labeled
‘POT2’ clockwise to increase the sensitivity and
counterclockwise to decrease the sensitivity. Until the Alarm
LED (top red LED) just comes on.
5. Remove the test gas.
6. As soon as the gas sensed is below the low alarm set point
(yellow LED is off). slide the service switch back to the
‘Normal’ setting.
7. For testing and calibrating the leak detector, see the “TESTING
& CALIBRATION” section.

LBW-50-RLV-%
Page 14
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.

LBW-50-RLV-%
Page 15
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
Remote Sensing
Please request special documentation for remote sensing.
Remote Alarm Installation
Remote Alarm allows for an audible and visible alarm of the LBW-50
at a local or remote location.
The wiring diagram below shows the connections from the LBW-50
to the Remote Alarm. Power for the Remote Alarm is derived from
the 16 VAC or 24 VDC ‘Power’ terminal strip on the LBW-50 Front
Panel Circuit Board. An Alarm signal is derived from the LBW-50
enclosure-mounted circuit board.
The Remote Alarm device is pictured next to the wiring diagram.

LBW-50-RLV-%
Page 16
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
Ammonia Leak Indication
In the event of a higher-than-normal ammonia concentration, the
front-panel LEDs will indicate as follows:
If the Ammonia
Concentration… Then the… And…
Equals or exceeds
.1%
Red “Minimal
Concentration” LED lights
No other actions
occur
Equals or exceeds
the pre-alarm set
point
Yellow “Early Warning”
LED lights
The pre-alarm
relay trips
Continues to
increase above the
pre-alarm set point
First red “Progressive”
LED lights
No other actions
occur
Equals or exceeds
the alarm set point Red “Alarm” LED flashes
The alarm and
auxiliary relays
trip
After an alarm, the alarm and auxiliary relays will automatically reset
when the ammonia concentration falls below the alarm set point, and
the pre-alarm relay will automatically reset when the ammonia
concentration falls below the pre-alarm set point.
TESTING AND CALIBRATION
It is recommended the detector(s) be tested at least once a month in
critical areas and once a quarter in non-critical areas to ensure they
are operating correctly. Also, the detector must be calibrated at least
once a year to ensure it is detecting and displaying ammonia
concentration accurately. At the time of calibration, you must use
new ammonia test gas that can be purchased from Cool Air Inc. or
their distributors. If a new ammonia sensor is installed, the detector
must be recalibrated. All tests and calibrations must be documented.
◄ INCREASING ◄CONCENTRATION ◄

LBW-50-RLV-%
Page 17
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
TESTING:
To test the detector, follow these steps:
1. Open the detector enclosure and slide the service switch to the
“SERVICE” position, if needed. This step deactivates the Early
Warning, Alarm, and Auxiliary relays so that any attached strobe
lights, horns, and/or monitoring systems are not activated. In
some applications, if alarming is required, leave the service
switch in the “NORMAL” position.
2. Apply test gas of desired % Ammonia, balance air to the sensor
at .3L/min
3. Check the following:
•LEDs on the front display panel light up from the
bottom to the top.
•If not is service mode the relay should activate.
4. Remove the ammonia sample.
Wait until the ammonia concentration reading is below the
pre- Alarm set point (yellow LED goes off), then slide the service
switch to the “NORMAL”
Position and close the detector enclosure. Remember, this step is
only required if the service switch was turned to the “SERVICE”
position in step # 1 above. Testing is now complete.
CALIBRATION:
1. Visually inspect the leak detector for any corrosion, damage,
etc. that could possibly affect the calibration procedure.
2. Make sure that the leak detector is powered up for a
minimum of 20-minutes before the calibration procedure
is performed.
3. Slide the service switch to the “SERVICE” position. This
step deactivates the Early Warning, Alarm, and Auxiliary
relays so that any attached strobe lights, horns, and/or
monitoring systems are not activated. In some applications,
if alarming is required, leave the service switch in the
“NORMAL” position.
4. Apply test gas of desired % Ammonia, balance air to the
sensor at .3L/min for 30-45 seconds, the top LED lamp
(large lamp) shall light up. Also, if not in service mode, the
Alarm and Auxiliary relays will de-energize. Remember,

LBW-50-RLV-%
Page 18
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
during the calibration procedure, the Early Warning LED
lamp (amber lamp) will light up, and the Early Warning
relay, if not in service mode will de-energize. This is a
factory set, non-adjustable setting.
5. To fine tune the Alarm set point, adjust the POT2
potentiometer (large potentiometer) until the Alarm LED
lamp just lights up. Adjusting clockwise shall cause the LED
lamps to light up from the bottom to the top. Adjusting
counterclockwise shall cause the LED lamps to turn off from
the top to the bottom.
6. Calibration complete Remove the test gas from the sensor.
7. After the detector indicate ammonia level below the low
alarm set point (Yellow LED off) slide the service switch to
the “NORMAL” position. this step is only required if the
service switch was turned to the “SERVICE” position in step
# 4 above.
8. We recommend this calibration to be performed once a year
or whenever the sensor has been replaced. Use a new
ammonia test gas with balance air. These can be purchased
from your local Cool Air Incorporated distributor or directly
from the manufacturer.
TECHNICAL SUPPORT
For technical support, contact Cool Air Incorporated using any of
these methods:
Contact: [email protected]
Phone: [phone] (USA)
Fax: [phone] (USA)
E-mail: [email protected]
Web site: www.coolairinc.com
Address:
Cool Air Incorporated
1544 134th Ave NE134th Avenue NE
Ham Lake Ham Lake, MN 55304 55304
USA

LBW-50-RLV-%
Page 19
Rev. 1.0 10/14/2022
Copyright © 2022 by Cool Air Incorporated. All rights reserved.
WARRANTY
The LBW-50-RLV-% comes with a 36-month warranty from the time
of purchase.
Cool Air Incorporated guarantees that the LBW-50 ammonia leak
detector, when connected to and operated in accordance with the
instructions contained in this manual, will perform in accordance with
the warranty expressed on the cover of the detector. Not installing,
maintaining, repairing, or operating the detector in accordance with
the instructions in this manual will automatically void the warranty.
Cool Air Incorporated will not be held liable for any losses, liabilities,
judgments, attorney fees, claims, or damages, including incidental
and consequential damages.
THE DETECTOR MUST BE TESTED AT LEAST ONCE A
MONTH IN CRITICAL AREAS, QUARTERLY IN
NON_CRITICAL AREAS AND CALIBRATED AT LEAST
ONCE A YEAR TO ENSURE IT IS OPERATING
ACCURATELY AND CORRECTLY. TEST AND
CALIBRATION RECORDS MUST BE RECORDED ON
APPROPRIATE LOG SHEETS.