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Bacharach HGM300 Installation & Operation Manual

Refrigerant monitoring system
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Download this manual See also: Installation Manual
HGM300 / RDM800
Refrigerant Monitoring System
Instruction 3015-4149
Installation & Operation Mini Manual
Rev. 8 – April 2006
SECTION 1 (Page 2) Introduction, standard accessories and mounting specifications
SECTION 2 (Page3) Suggested location of HGM300/RDM800 and pickup points
SECTION 3 (Page 4) HGM300/RDM800 component locations
SECTION 4 (Page6) Basic HGM300/RDM800 monitor system connections
SECTION 5 (Page 10) Multiple HGM connections
SECTION 6 (Page 12) Powering up the monitoring system
SECTION 7 (Page 13) Programming the HGM300 using the RDM800
SECTION 8 (Page 15) Programming the HGM300 using PC software
SECTION 9 (Page 17) Responding to alarms
SECTION 10 (Page 19) Log interval and trend screen
SECTION 11 (Page 20) Working with the fault and fault log screens, and
resetting to factory default settings
SECTION 12 (Page 22) Working with the diagnostic screen.
SECTION 13 (Page 24) Whom to contact.

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Summary of Contents for Bacharach HGM300

  • Page 1 Rev. 8 – April 2006 SECTION 1 (Page 2) Introduction, standard accessories and mounting specifications SECTION 2 (Page3) Suggested location of HGM300/RDM800 and pickup points SECTION 3 (Page 4) HGM300/RDM800 component locations SECTION 4 (Page6) Basic HGM300/RDM800 monitor system connections...
  • Page 2 SECTION 1 Introduction Welcome – This mini manual is an introduction to the installation and operation of the HGM300/RDM800 refrigerant monitoring system. For detailed installation / operation / maintenance information, please refer to Instruction 3015-4148. As you open the shipping carton locate the following items: •...
  • Page 3 HGM300 / RDM800 Refrigerant Gas Leak Monitor Mechanical Room Placement The HGM300 should be centrally located in the mechanical room and be readily accessible for easy visual monitoring and servicing. Air sample tubing may be run in lengths up to 500 feet.
  • Page 4 SECTION 3 HGM300 Components Factory Default Node Switch Address Switches 4–20 mAdc Interface Board AC Power (Optional) ON/OFF Switch Dual 4-20 mAdc Outputs AC IN (Signal Out Only) Connector DO NOT APPLY POWER! RS-485 Location of Connector AC Input Line Filter...
  • Page 5 RDM800 Components Terminator Switches RS-485 to RS-485 to Relay AC IN HGM300 Building Connector Connector T3 Monitors Management System Instruction 3015-4149...
  • Page 6 “LEAK, SPILL and EVAC”. Connect the “SYSTEM FAULT” relay if used. The dual 4-20mAdc output connector is located on the left side of the HGM300 main PC board. This is a SIGNAL OUT ONLY function. Both loops must be wired if this option is installed. If only one loop is used, the unused loop must have a jumper wire installed.

  • Page 7: Alarm Relays

    HGM300 WIRING SCHEMATIC OPTIONAL DUAL LOOP MAIN 4-20 mADC COMMON ALARM RELAYS 5 AMP, 240 VDC COMMON LOOP 1 ZONE LOOP 2 PPM RS-485 LEAK SPILL EVACUATE FAULT 1C NO NC 2C NO NC 3C NO NC 4C NO NC...
  • Page 8 RDM800 WIRING SCHEMATIC AUXILIARY ALARM RELAYS 5 AMP, 240 VAC USER DEFINABLE RS-485 RS-485 HOST MONITORS C NO NC C NO NC B A GND B A GND MAIN SPECIAL NOTE: TO ESTABLISH THE RS-485 COMMUNICATION LINK WITH THE RDM800 OR WITH A BUILDING MANAGEMENT SYSTEM, USE #18 GAGE AWG, MULTI-STRANDED, SHIELDED AND TWISTED PAIR, INSTRUMENT CABLE.
  • Page 9 Typical HGM300 Relay 1 and Relay 2 Wiring LEAK SPILL EVACUATE FAULT Horn Strobe Aux. Power Main AC Input Jumper the ‘Neutral’ of the auxiliary power connector to the ‘Common’ on the relay block. Connect one end of strobe or horn to the ‘NO’ of whichever level of alarm is appropriate for application.

  • Page 10: Multiple Hgm's

    “through” the RDM800 to the HGM300’s, but not physically on the HGM300/RDM800 network. NOTE: If the HGM300 is not at the end of the line in a series connection, then the terminator on the HGM must be set to “OUT.” Also, each end of the series must have the terminator set to “IN”.

  • Page 11: Building Management System

    Multiple HGM’s Connected to a Building Management System Daisy Chain Fashion BUILDING MANAGEMENT SYSTEM RS-485 TERMINATOR “IN” HGM300 HGM300 HGM300 HGM300 UNIT 1 UNIT 2 UNIT 3 UNIT 4 NODE 1 NODE 2 NODE 3 NODE 4 TERMINATOR TERMINATOR TERMINATOR TERMINATOR “OUT”...
  • Page 12 During start up the software will pull a vacuum test to verify the number of zones and a plugged zone will give a false count • Communication connection between HGM300 and RDM800 • Check node address for the HGM300 (or multiple HGM300s) • Terminator positions Instruction 3015-4149...
  • Page 13 8. Press the “LOG INTERVAL” button only if the interval is to be reduced from the 1440 minute (once every 24 hours) factory setting to a lower setting. (At the 1440 minute setting the HGM300 will record the observed PPM level once every 24 hours. This can be reset to lower numbers to trend a problem in a given zone.)
  • Page 14 Zone Setup Screen #2 10. Press the “LEAK LEVEL” button. Use left/right keys to move across and up/down keys to readjust leak alarm PPM level to desired PPM level. 11. Press the “SPILL LEVEL” button. Repeat as in step 10. NOTE: The spill level must be greater than or equal to the leak level.
  • Page 15 Programming the HGM300 Using PC Software NOTE 1: There are two versions of PC software. Use Version 1.0 with HGM300 units with v1.0 Unit Firmware, which were built June 2001 or before (as indicated by a serial number that starts with AF01 or lower).
  • Page 16 To Send a Saved Program to an HGM300 Open the HGM300 PC software; open the proper saved program; connect the PC to the HGM300; go to HGM, SEND SETUP and then press ENTER. The saved program will be sent to the HGM300.

  • Page 17: Responding To Alarms

    SECTION 9 Responding To Alarms To respond to an alarm from the System Screen, press the button adjacent to the blinking ALARMS field. This will take you to the Alarm Summary Screen. System Screen Alarm Summary Screen The Alarm Summary Screen displays a list of all alarm conditions across the network. Each box represents a single alarm.
  • Page 18 Repeat this procedure for each active alarm. When all alarms are acknowledged the red alarm light will go out on the HGM300 and the alarm relays will de-activate. All pending alarms across the entire network must be acknowledged before the RDM800 returns to normal operation. Once this occurs, the RDM800 red alarm light will go out and its relays will de-activate.
  • Page 19 SECTION 10 Log Interval and Trend Screen The HGM300 retains a data log of 100 measurements per zone. The stored measurements are displayed on the Trend Screen starting on the left and moving to the right. The LOG INTERVAL setting is a useful tool to determine what is occurring in a mechanical room over time.

  • Page 20: Critical Faults

    “NO FLOW” message in each individual zone affected. Check for a blockage in the air sample line or at the line end filter. Once the blockage has been cleared, the HGM300 will return to normal operation after the zone has been sampled. NOTE: This can take some several minutes since it is dependent upon how many zones there are and their lengths.

  • Page 21: Viewing The Fault Log

    IMPORTANT: Performing this function wipes out all program parameters, alarms, faults, trends and log files. Resetting the HGM300 – Press and hold down the Factory Default switch (left most switch inside the HGM300); cycle AC power OFF then ON; listen for five beeps; and then release the switch. Reprogram the HGM300 per Section 7 in this manual.

  • Page 22: Working With The Diagnostic Screen

    SECTION 12 Working with the Diagnostic Screen The Diagnostic Screen displays reference values for use by repair technicians. From the top level Zone Screen press the SYSTEM key to go to the System Screen. Press the Diagnostic key to view the reference values.
  • Page 23 LINE 8: Zero Temperature – This line contains the sensor and enclosure temperature measured and stored during the last purge cycle in degrees C. LINE 9: Bench Temperature – This is the current IR sensor temperature in degrees C as well as the raw voltage coming from the temperature sensor itself.

  • Page 24: Mailing Address

    PLEASE REVIEW COMPLETE WARRANTY CONDITIONS. PARTS: 2 YEARS AFTER SHIPMENT FROM FACTORY UNLESS OTHERWISE NEGOTIATED. LABOR: 90 DAYS AFTER SHIPMENT. DRILLING INTO THE TOP OF THE HGM300 OR RDM800 CASE VOIDS THE WARRANTY. ANY WATER FOUND IN THE INFRARED DETECTING BENCH VOIDS THE WARRANTY.

This manual is also suitable for:

Rdm800

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