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Cool Air LBW-420-RLV Manual

Ammonia leak detection systems
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0 to 10% Vent Line SENSOR ONLY
LBW-420-RLV-% 24VDC (optional 100 to
240VAC)
Models
FIRMWARE 12

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Summary of Contents for Cool Air LBW-420-RLV

  • Page 1 Models 0 to 10% Vent Line SENSOR ONLY LBW-420-RLV-% 24VDC (optional 100 to 240VAC) FIRMWARE 12...

  • Page 3: Table Of Contents

    ERVICE IMEOUT ........... 18 ETTING THE UXILIARY ELAY AIRING ............19 ETTING THE RELAY LATCHING ............19 ETTING A LATCHED RELAY Page | 1 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.

  • Page 4: Specifications

    0.5 Amps max. Dimensions 9½” H x 8” W x 4½” D Weight 6 lbs. Enclosure NEMA 4X rated, UL listed Pollution Degree Page | 2 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.

  • Page 5: Important-Read This First

    The Cool Air Incorporated LBW-420-RLV-% has a fully isolated DC to DC power supply, allowing the LBW-420-RLV-% to be Page | 3 Firmware version 12 Rev. 10-1 10-14-2022...

  • Page 6: Standard Features

    The LBW-420-RLV-% requires a DC supply voltage between 18 and 36 volts. The LBW-420-RLV-% can be configured to supply power to the 4- 20 mA circuit(s) or can operate as a fully isolated 4-20 mA sensor. 4–20 mA Analog Outputs...

  • Page 7: Parts Description

    (%). It will also be use in setting options and calibration. Optionally it can display temperature. Page | 5 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.

  • Page 8: Ammonia Sensor

    NOTE: The service switch may be a jumper instead of the switch. Page | 6 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.

  • Page 9: Ushbuttons

    Setting the information displayed on the front panel • Programming set points • Displaying system information • Calibrating the detector • Page | 7 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.
  • Page 10 Caution: Before closing the detector enclosure, be sure to return the rotary selector switch to position “0” or “1” to correctly display ammonia concentration. Page | 8 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.
  • Page 11 “0”, then back to “3” to continue programming the alarm set point. Page | 9 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.

  • Page 12: Enclosure-Mounted Circuit Board

    4 to 20mA output for the temperature sensor. Power Power for the LBW-420-RLV-% must be a DC voltage between 18 and 30 volts with a current rating of at least 0.5 amps at 24 volts. Power is connected to terminal block J2.

  • Page 13: Relays

    External temperature sensor input (not available on • this model) Alarm Relay contacts (Hi Alarm) • Pre-alarm Relay contacts (Low alarm) • DC Power • Page | 11 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.

  • Page 14: M A Analog Output

    0 %. If the current is 20 mA, then the ammonia concentration is 1% (1% range), 2% (2% range), and 10% (10% range) Page | 12 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.
  • Page 15 This circuit is shown in figure 2 below: Fig 2 Page | 13 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.
  • Page 16 The maximum allowable resistance in the receiving device must not exceed Rmax using this formula: Rmax = 50 (Vs – 7.5) Page | 14 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.

  • Page 17: Installation And Setup

    “0” or “1”). See the next section on setting the display mode. Be sure the displayed ammonia concentration is below the programmed Low alarm set point Return the detector to normal Page | 15 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.

  • Page 18: Programming And Operation

    Set the rotary selector switch to position “3” to program the ammonia the Hi-Alarm set point (ALARM RELAY) or “4” to program the ammonia Low Alarm set point (PRE-ALARM RELAY). Page | 16 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.

  • Page 19: Programming The 4-20 M Arange

    Remove the jumper and return the rotary selector switch to the desired position. Move the service jumper to the “OFF” position and close the detector enclosure. Page | 17 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.

  • Page 20: Setting The Service Mode Timeout

    Once you have selected the desired service mode timeout you must hold the ENTER button for two seconds before removing the SET 1 jumper or changing the rotary switch. Page | 18 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.

  • Page 21: Setting The Relay Latching

    Message Codes If the service jumper is in the “on” position, the display message shows: Message Code Description Service jumper “on” Page | 19 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.
  • Page 22 At the time of calibration, it is highly recommended to use ammonia test gas that can be purchased from Cool Air Inc. or their distributors. The detector is initially calibrated and programmed at the factory. However, if a new ammonia sensor is installed, the detector must be recalibrated.
  • Page 23 “ON” position in step # 1 above. Testing is now complete. Page | 21 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.
  • Page 24 Set the rotary selector switch to position “9”. Page | 22 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.
  • Page 25 Remember, this step is only required if the service jumper was moved to the “ON” position in step 1 above. Testing is now complete. Page | 23 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.
  • Page 26 TECHNICAL SUPPORT For technical support, contact Cool Air Incorporated using any of these methods: Phone: (763) 205-0844 (USA) Fax: (763) 432-9295 (USA) E-mail: info@coolairinc.com Web site: www.coolairinc.com Address: Cool Air Incorporated 1544 134 Ave NE Ham Lake, MN 55304 Testing and maintenance supplies;...
  • Page 27 3-months bump testing in non-critical areas, and annual or twelve (12) month calibration service, which shall include proof of Page | 25 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.
  • Page 28 All other warranties, express or implied, including, but not limited to, the implied warranties of merchantability or fitness for a particular purpose are hereby disclaimed Page | 26 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.
  • Page 29 Limitation of Liability It is understood and agreed that cool air Incorporated’s liability, whether in contract, in tort, under any warranty, in negligence or otherwise shall not exceed the amount of the purchase price paid by the purchaser for the product and under no circumstances shall cool air incorporated be liable for special, indirect, or consequential damages.
  • Page 30 THIS PAGE INTENTIONALY LEFT BLANK Page | 28 Firmware version 12 Rev. 10-1 10-14-2022 Copyright © 2020 by Cool Air Incorporated. All rights reserved.
  • Page 32 1544 134 AVE NE, Ham Lake, MN 55304 USA Phone (763) 205-0844 Fax (763) 432-9295 info@coolairinc.com www.coolairinc.com...

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