LBW-50 Operation and Maintenance Manual
Contents
1. AU PERSONNEL QUALIFIE Power for the LBW 50 must be a nominal 115 or 230 Volts AC 50 60 Hz 16 VAC or 24 VDC The 115 230 VAC power is connected to the transformer 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 terminal block J2 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 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 lighted green and de energized an alarm condition when the LED is not lit Page 12 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector External Connections Contacts for external connections e Auxiliary Relay contacts e Alarm Relay contacts e Pre Alarm Early Warning Relay contacts Wiring Diagram LBW 50 Installation wiring diagrams for the LBW 50 are shown on the next three pages2. RISQUE DE CHOC ELECTRIQUE NE PAS ENLEVER LE COUVERCLE AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L USAGER CONFIER L ENTRETIEN AU PERSONNEL QUALIFIE Push the test button see attached picture for location and make sure that all of the LED lamps light up and the relays to de energize If the leak detector has a service switch slide it 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 Place a new ammonia test bottle over the sensor and after 30 45 seconds slightly longer in coolers amp freezers the top LED lamp large lamp shall light up Also the Alarm and Auxiliary relays shall de energize at this time Remember during the calibration procedure the Early Warning LED lamp amber lamp will light up and the Early Warning relay shall de energize This is a factory set non adjustable setting To fine tune the Alarm setpoint adjust the POT2 potentiometer large potentiometer until the Alarm LED lamp just lights up and Page 25 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector AVAILABLE OPTIONS In addition to the standard features the LBW 50 can be equipped with these options e Aremote ammonia sensor with cable allowing t
3. COOL AIR INCORPORATED 1544 134th Avenue NE Ham Lake MN 55304 USA Phone 763 205 0844 Fax 763 432 9295 info coolairinc com www coolairinc com COOL AIR INCORPORATED LBW 50 Ammonia Leak Detector Peogrgt lvge Power Conlaminnian Earty Warning EE Minimal Contamina Cool Air Incorporated 1441 Rice Siroet 5L Paul MN 55117 19 28 ed eee Cooler Cem Model LBW 50 Ammonia Leak Detectors CAUTION amp 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 HN 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 Ammonia Leak Detector LBW 50 SPECIFICATIONS cont d Pollution Degree Tested to UL 61010 1 2004 R7 05 CAN CSA C22 2 61010 1 2004 Approvals EAD ByTUV Sum Certificate no Pending 1 Remote ammonia sensor with box and cable 500 ft max 2 Back up battery 3 Stainless steel washdown tube 4 Remote alarm light and horn unit with box cable amp TEST NORMAL SILENCE toggle switch Page 30 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector LBW 50 SPECIFICATIONS
4. N 9 ENCLOSURE MOUNTED COMPONENTS 11 EE ee e 12 RELAY STATUS Les 12 EXTERNAL LONNECTIONS 12 WIRING DIAGRAMG 0 cc cece cece cence ees 13 Typical 115 VAC Application 14 Typical 230 VAC Application 15 Typical 16 VAC or 24 VDC Application 16 INSTALLATION ANDSKIUR cece eccececcecesceseecs EXAMPLE APPLICATION 0 0 00 coc ccc ccc ccc cc cc ccnccecceceeeee Page 2 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector TABLE OF CONTENTS Cont TESTING ANDCALIBRATION cc ccccccccccceeeeeeeeeeeeeneaes 24 25 TECHNICAL SUPPOR P seg oc ide ee 26 WARRANIY tee ee ee 2a LBW S0OSDRCTIHICATIONS cc ccccccceccceeeceeeeeeeeeeesseeeeeees 28 29 Page 3 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector WARRANTY The LBW 50 comes with a 36 month limited 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 att
5. NAL AND DOES NOT CONNECT TO THE RED TERMINAL Also the shield and or drain conductor connects to the SHIELD terminal on the LBW 50 only do not connect in the Remote Sensor The Remote Sensor device is pictured next to the wiring diagram LBW 0 to Remote Sensor Wiring Jumpers connect pins 2 3 Far left for remote sensor Remote Ammonia Sensor Front Panel Mounted Circuit Board Sensor Page 20 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved Pre Warning Contacts If the ammonia concentration equals or exceeds the pre LBVV 50 Example Application alarm set point the LBW 50 Ammonia Leak Detector oi Bae ab a 18 23 SCHEECK EE EFFEEF e f E 2 e D g EES S S ZP a CHA SEKR SE SCER 5 232 d Sa S Ri gs EEE Se 2222 PE nasg eg Ze 5 qa s F EK aa A low stage ammonia compressor shuts off TH e SE i T De cf SE Fo stariji 2 ni KEES KS Pits be 2523245 SERS lt 5 SS a page BS TELE ASS SCAS lt a S Sag EEE SS grapo S Page 19 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector Power Supply MN 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
6. Sensitivity Metal oxide semiconductor 833 mW integral heater Alumina ceramic base 100 mesh SUS 316 double gauge flame arrestor Alarm Pre Alarm and Auxiliary auxiliary relay operates at same time as alarm relay Relays Form C SPDT normally open normally closed energized in normally open state Rated 5A 115 VAC or 24 VDC Contacts for alarm pre alarm and Outputs auxiliary relays and external temperature sensor Operating Temperature 50 F to 125 F Operating Humidity 5 to 95 RH non condensing 115 230 VAC 60 Hz 0 12 Amps max or 24 VDC 0 58 Amps max or 16VAC 0 65 Amps max Ammonia Sensor Power Requirements Pantone 7 V2 H x 7 12 W x 4 12 D NEMA 4X rated UL listed CSA IEC Enclosure IP66 Page 29 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector TABLE OF CONTENTS IMPORTANT READ THIS FIRST AAA CAUTION Sess sed a a Shed dedi r EE AVOIDING NUISANCE ALARMS ccc cccccccccccecuceccucucuceceeces INTRODUCTION WEE STANDARD FEATURES 0000 ccc cece eccecceccscescescecescesees AVAILABLE OPTIONS EEN PARTS DESCRIPTION sco cs FRONT PANEL DISPLAY 0 0 cc cececeee 7 AMMONIA SENSOR 8 FRONT PANEL MOUNTED CIRCUIT BOARD 8 SERVICE SWITCH SERVICE MODE 9 ADJUSTABLE ALARM POTENTIOMETER 9 LED TEST BUTTON 0 ccc cc cece cece ee 9 LOCAL REMOTE JUMPERS 0cceee 9 REPLAY CED EE
7. The 115 VAC diagram is on page 14 the 230 VAC diagram is on page 15 and the 16 VAC or 24 VDC diagram is on page 16 Page 13 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector The detector is tested adjusted and calibrated at the factory To field adjust the Alarm setpoint of the detector for a specific installation follow the steps below A 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 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 Hold the desired ammonia test bottle over the sensor head Adjust the Alarm set point by adjusting the potentiometer labeled POT clockwise to increase the sensitivity and counter clockwise to decrease the sensitivity 5 Slide the service switch back to the Normal setting 6 For testing and calibrating the leak detector see the TESTING amp CALIBRATION section on page 24 25 LBW 50 Example Application This schematic on the next page illustrate
8. d by a flame arrestor and has an integral heater and a ceramic base that is resistant to severe environments If anew ammonia sensor is installed the detector must be re calibrated See the TESTING AND CALIBRATION section starting on pages 24 25 Front Panel Mounted Circuit Board The front panel mounted circuit board see picture on page 9 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 Page 8 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector Backup Auxillary Emergency Pre Warning Power Battery Relay Relay Relay Relay LEDs Service Switch POT1 Local POT2 Remote Jumpers LED Test Local or Remote Sensor connections FRONT PANEL MOUNTED CIRCUIT BOARD 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 Page 9 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector Backup Battery Testing Installation and Replacement The LBW50 can be supplied with an optional Backup Battery from Cool Air Incorporated This backup supply is good for approximately 1 1 2 hours of Operating time During normal opera
9. e Alarms To avoid nuisance alarms place the detector in service mode before e Adjusting the Alarm setpoint e Performing maintenance repairs testing or calibration e Performing maintenance on nearby compressor systems e Painting and or cleaning nearby e Performing refrigeration system maintenance e Washing down the area e Removing the ammonia sensor Furthermore be sure of the following before placing the detector in normal operating mode e The ammonia concentration reading is below the Alarm setpoint Page 4 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector LBW 50 Ammonia Leak Detector INTRODUCTION the relays de energize Adjusting clockwise shall cause the LED lamps to light up from the bottom to the top Adjusting counter The Cool Air Incorporated LBW 50 is an AC DC powered state of the art clockwise shall cause the LED lamps to turn off from the top to the ammonia leak detector that detects and displays ammonia concentrations of bottom 25 to 800 parts per million PPM It comes equipped with a solid state long life ammonia sensor that has a quick and accurate response to ammonia l Remove the ammonia test bottle tighten the cap on the bottle concentrations check off the schedule number on the bottle and enter the information on the enclosed log form STANDARD FEATURES 8 Remember slide the service switch to the NORMAL position this step
10. e 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 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 Adjustmentable Alarm Potentiometer There is one adjustment potentiometer that is provided to set the Alarm setpoint The Pre Alarm Early Warning is adjusted at the factory and locked into place The Alarm setpoint is also pre set at the factory but is field adjustable The adjustment procedure is in the INSTALLATION AND SET UP section on page 17 LED Test Button Pressing the momentary LED Test button will cause all LED s to light to up and all three relays to de energize to confirm that they are functional Local Remote Jumpers JMPR1 and JMPR2 convert from a local enclosure mounted sensor to a remote sensor For a local sensor both jumpers must connect pins to 2 the far right position when viewed as shown in the picture on page 10 Fora remote sensor both jumpers must connect pins 2 to 3 the far left position when viewed as shown in the picture on page 10 Relay LED s Two green LED s indicate that the relays are energized LED to the left of the rela
11. he sensor to be located a maximum of 500 feet away from the detector COOL AIR I AMMONIA iz E d COTE SENSOR e An internal back up battery to keep the detector working during loss of main power e A stainless steel washdown tube installed over the sensor to minimize the chance of getting wet during washdown e A remote alarm light and horn box with a toggle switch to TEST NORMAL SILENCE the alarm Contact Cool Air Incorporated technical support for more detailed information or for purchasing any of these options Page 6 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector PARTS DESCRIPTION Front Panel Display The front panel display is comprised of a series of labeled indicating LED s The LED s provide an indication of ammonia concentration alarm status power supply and service mode at a glance Front Panel Display LBW 50 Ammonia Alarm Progressive Indicating LEDS Contamination Early Warning Minimal Contamination Cool Air Incorporated 1441 Rice Street St Paul MN 55117 1 651 487 8844 www coolairinc com For information on how the display indicates ammonia concentrations see the sections on ammonia leak indication Page 7 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector TESTING AND CALIBRATION FIELD TESTING ONCE A MONTH We recommend testing not calibrat
12. ing your ammonia leak detector once every month using the supplied ammonia test bottle For your convenience there are numbers to check off on the ammonia test bottle for each month of testing After one year purchase a new ammonia test bottle follow the calibration procedure below and then use the same bottle for testing your ammonia leak detector throughout the year To test the detector follow these steps 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 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 Hold a sample bottle of ammonia of concentration over the sensor 3 Check the following e LEDs on the front display panel light up from the bottom to the top A Remove the ammonia sample Wait until the ammonia concentration reading is below the pre alarm set point then slide the service switch to the NORMAL position and close the detector enclosure Remember this step is only req
13. is only required if the service switch was turned to the The LBW 50 comes with these additional standard features SERVICE position in step 4 above e Adjustable Alarm setpoint a Congratulations You have successfully calibrated your Cool Air e Normally open normally closed contacts for communicating with Incorporated LBW 50 Am monia Leak Detector We reco mmend common industry alarm systems this calibration to be performed once a year using a new ammonia e A NEMA 4X UL listed enclosure test bottle These can be purchased from your local Cool Air e Spare contacts for operating auxiliary equipment such as exhaust Incorporated distributor or directly from the manufacturer fans king valves compressors and additional alarm systems e Service mode which allows for testing and calibrating without setting off the alarms Page 5 Rev 2 1 08 10 Page 26 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector FIELD CALIBRATION ONCE A YEAR l Visually inspect the leak detector for any corrosion damage etc that could possibly affect the calibration procedure Make sure that the leak detector is powered up for a minimum of 8 hours before the calibration procedure is performed WARNING RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER NO USER SERVICEABLE PARTS INSIDE REFER TO QUALIFIED SERVICE PERSONNEL AVIS
14. orney fees claims or damages including incidental and consequential damages THE DETECTOR MUST BE TESTED AT LEAST ONCE A MONTH 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 Page 28 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector TECHNICAL SUPPORT For technical support contact Cool Air Incorporated using any of these methods Contact Sales Representative Phone 651 487 8844 USA Fax 651 487 8857 USA E mail info coolairinc com Web site www coolairinc com Address Cool Air Incorporated 144 Rice Street St Paul MN 55117 3899 USA Page 27 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector 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 for at least 8 hours before testing Adequately cover the detector sensor during washdown and avoid spraying the washdown liquid directly onto the sensor Avoiding Nuisanc
15. power supply Allow 24 hours of leak detector operation time before testing the new battery Page 22 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector Remote Alarm Installation Remote Alarm allows for an audible and visible alarm of the LBW 50 at a local or remote location WARNING RISK OF ELECTRIC SHOCK DO NOT HN 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 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 to Remote Alarm Wiring L DW 20 REMOTE ALARM TB6 Power RED 16VACor Terminal ee 24 VDC Alarm Relay Contacts NC NORMAL CLOSE C COMMON NO NORMAL OPEN Page 21 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector 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 pr
16. s an example application Page 18 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector INSTALLATION AND SETUP Caution Do not apply power to the detector until instructed to do so The detector comes with four mounting feet packaged in the detector enclosure for shipment Use the directions that accompany the mounting feet for mounting the detector enclosure The detector should be mounted in a location where ammonia leaks are most likely to occur such as near valve groups compressors and refrigeration coils Be sure the detector is visible and easily accessible Avoid locating the detector where it might be damaged by forklift traffic and or any other types of external activity In washdown areas please make sure the sensor is protected from washdown by installing our optional stainless steel wahsdown tube It is important not to install the detector specifically the sensor in designated smoking areas as even a minute concentration of smoke will set off the alarm A 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 The detector is set at the factory to operate on 115 VAC When power is first applied to the detector in the field it will immedia
17. tely 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 Page 17 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector LBW 50 115 230 VAC Transformer By Others Including Wire 115 VAC 90 60 Hz Typical 115 VAC Application Page 14 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector LBW 50 L 115 230 VAC Transformer By Others Including Wire 230 VAC 50 60 Hz Typical 230 VAC Application Page 15 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector LBW 50 To TB6 on Front Panel Circuit Board By Others Including Wire 24VDC or 16 VAC Typical 24 VDC or 16 VAC Application Page 16 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved
18. tion the backup battery is not used but is kept trickle charged In the event of a power failure the unit will seamlessly operate off of the back up battery A 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 To test an existing or new battery installation simple disconnect the leak detector power supply The unit should stay in normal operation and not turn off If the unit turns off check to make sure that the red and black wires are secure on the battery terminals and the circuit board terminals If the wiring is good the battery should to be replaced If the back up battery needs to be replaced because it has either failed or will not keep a charge a new back up battery can be ordered through your local leak detector supplier or directly from Cool Air Incorporated Prior to removing the old battery disconnect the leak detector power supply remove the black and red wires from the battery terminals cut the wire cable strap used primarily for shipping and remove the battery from the Velcro mounting pad Install the new battery onto the Velcro mount pad remove the battery protector caps plug the black wire into the black terminal plug the red wire to the red terminal and reconnect the leak detector
19. uired if the service switch was turned to the SERVICE position in step above Testing is now complete Page 24 Rev 2 1 08 10 Copynght 2010 by Cool Air Incorporated All rights reserved lt 4 INCREASING d CONCENTRATION lt 4 LBW 50 Ammonia Leak Detector 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 Red Minimal No other actions 25 PPM Concentration LED lights occur Equals or exceeds the pre alarm set point Yellow Early Warning The pre alarm LED lights relay trips Continues to increase above the pre alarm set point First red Progressive No other actions LED lights occur The alarm and Red Alarm LED flashes auxiliary relays trip Equals or exceeds the alarm set point 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 Page 23 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector Ammonia Sensor The detector comes with a solid state long life sensor that has a high sensitivity to amine compounds and a quick response to concentrations of ammonia The sensor is protecte
20. ys indicates that Alarm and Auxiliary relays are energized LED 10 to the right of the relays indicates that the Pre Warning relay is energized Page 10 Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector Enclosure Mounted Components The enclosure mounted components include a transformer for 115 230 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 Power Transformer Optional Backup Battery location Local Ammonia Sensor connector Page Rev 2 1 08 10 Copyright 2010 by Cool Air Incorporated All rights reserved LBW 50 Ammonia Leak Detector Remote Sensing Remote Sensing allows the ammonia sensor to be located remotely from the LBW 50 Remember there is only one sensor per leak detector A 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 The wiring diagram below shows the connections from the LBW 50 to the Remote Sensor All connections to the Remote Sensor are made at the LBW 50 terminal strip on the Front Panel Circuit Board using 4 conductor shielded cable Note specifically that the RED WIRE CONNECTS TO THE REM TERMI
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