Bacharach HGM-SZ Installation & Operation Manual
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Bacharach HGM-SZ Installation & Operation Manual

Single zone gas monitors
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Single Zone Gas Monitors
HGM-SZ (Halogen) and AGM-SZ (Ammonia)
Instruction 3015-4256
Installation / Operation / Maintenance
Rev 13 – January 2013
Patent 6,590,690
UL 61010-1
CSA 22.2 No. 61010-1
EN 14624
Product Leadership • Training • Service • Reliability

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  • Page 1 Single Zone Gas Monitors HGM-SZ (Halogen) and AGM-SZ (Ammonia) Instruction 3015-4256 Installation / Operation / Maintenance Rev 13 – January 2013 Patent 6,590,690 UL 61010-1 CSA 22.2 No. 61010-1 EN 14624 Product Leadership • Training • Service • Reliability...
  • Page 2 Bacharach, Inc. warrants to Buyer that it will convey good title to this Product. Bacharach's liability and Buyer's remedy under this warranty of title are limited to the removal of any title defects or, at the election of Bacharach, to the replacement of this Product or parts thereof that are defective in title.

  • Page 3: Table Of Contents

    Single Zone Gas Monitor Table of Contents SECTION 1. INTRODUCTION........................1 1.1. How to Use This Manual........................1 1.2. Warning Statements ........................... 1 1.3. Caution Statements ..........................1 1.4. Hazard Symbols Located on the Monitor ................... 1 1.5. Safety Precautions ..........................1 1.5.1.
  • Page 4 Single Zone Gas Monitor 3.4.1. Overview ..........................22 3.4.2. Clearing / Silencing a Gas Alarm ..................22 3.4.3. Viewing the Gas Alarm Log ....................22 3.5. System Faults ........................... 23 3.5.1. Overview ..........................23 3.5.2. Clearing / Silencing a Fault Alarm ..................23 3.5.3.

  • Page 5: Section 1. Introduction

    Single Zone Gas Monitor SECTION 1. INTRODUCTION 1.1. How to Use This Manual Thank you for investing in a BACHARACH Single Zone Monitor. This manual provides important information on how to install, operate, and service the SZ monitoring unit. To assure operator safety and the proper use of the monitor, please read, understand, and follow the contents of this manual.

  • Page 6: Ac Power Supply

    1.5.6. Misuse and Modifications to the Monitor WARNING: The protection provided by the monitor may be impaired if the monitor is used in a manner not specified by Bacharach, Inc. Modifications to this monitor, not expressly approved, will void the warranty.

  • Page 7: Fusing

    The Bacharach SZ is designed to continuously test for the presence of gas in an area that is located up to 500 ft (152.4 m) away from the monitor. The SZ monitor displays the type of gas being monitored, along with displaying both the current gas level and the peak gas level detected in that area on its front panel LCD.

  • Page 8: Suggested Location Of Sampling Point

    Single Zone Gas Monitor The SZ monitor is shipped with its leak, spill, and evacuate alarm levels set at 100, 300 and 500 ppm respectively. Setting the monitor at these recommended alarm levels will satisfy the needs of most users. However, the ppm levels generated by system leaks into the environment are greatly influenced by the volume of air in the sampling area, air circulation, size of the leak, distance to the monitoring point, and a host of other variables.

  • Page 9: Specifications

    Single Zone Gas Monitor 1.7. Specifications Category HGM-SZ Specifications Single-zone infrared monitoring system for low level continuous monitoring of CFC, HCFC and HFC refrigerant gasses used in most commercial refrigeration systems. System design Product Type supports compliance to the refrigerant monitoring requirements of ANSI/BSR ASHRAE 15- 2007 and ASHRAE Safety Code 34-2007.
  • Page 10 Single Zone Gas Monitor Category General Single Zone Specifications Coverage Single zone Detector Type Infrared, Non-Dispersive Warm-up Time 15 minutes 3 Indicator lights: • Green Monitor is powered on. LED glows during normal operation; flashes when unit is in warm-up mode Front Panel •...

  • Page 11: Section 2. Installation

    Open the enclosure and inspect the interior of the monitor for loose components that may have become dislodged during shipment. If damage is discovered, please contact the nearest Bacharach Service Center for assistance. 2.1.3. Location of the Monitor Place the monitor in a location that will require no more than 500 ft (152.4 m) of tubing (total of sample...

  • Page 12: Connecting Gas Sample And Exhaust Lines

    All tubing connections are made on the bottom of the enclosure as displayed in the illustration below. Figure 2-2. HGM-SZ Monitor Bottom View * There is an additional service knockout on top of the case.

  • Page 13: Tubing Considerations

    Single Zone Gas Monitor 2.3.2. Tubing Considerations Use ¼ in. outside diameter (0.040 in. wall) flex tubing for all air lines (P/N 0304-2743 or equivalent for HGM; P/N 0304-2742 or equivalent for AGM). The tubing should be clean and free of moisture or other contaminants.

  • Page 14: Connecting The Exhaust Line

    These kits are designed for use ONLY in confined/defined spaces with high potential for leaks, such as food cases, cold rooms, refrigeration rack rooms, etc. Bacharach’s SZ 2-way (P/N 3015-5404) and 3-way (P/N 3015-5405) splitter kits are available as an optional accessory. Refer to instruction 3015- 5415 (supplied with kit) for detailed installation instruction.

  • Page 15: Interior Schematic (Halogen Hgm)

    Figure 2-5. Interior Assembly of the Single Zone Halogen Gas Monitor NOTE: The plastic cable tie surrounding the pump is for stability during shipping. Please remove before operating. If the unit gets shipped to Bacharach for service, reinstall a plastic cable tie around the pump to prevent damage during shipping.

  • Page 16: Interior Schematic (Ammonia Agm)

    NOTE: The plastic cable tie surrounding the pump is to ensure safe handling during shipping. Please remove before operating. If the unit gets shipped to Bacharach for service, reinstall a plastic cable tie around the pump to prevent damage during shipping.

  • Page 17: Electrical Wiring

    Single Zone Gas Monitor 2.6. Electrical Wiring The SZ unit uses a universal power supply that is capable of accepting inputs of 100 to 240 VAC, 50/60 Hz. The monitor’s power consumption is 15 Watts (maximum). It is highly recommended that the monitor be connected directly to the AC power source, preferably on its own circuit.

  • Page 18: Connecting External Alarms

    Single Zone Gas Monitor 2.7. Connecting External Alarms 2.7.1. Overview The SZ monitor includes four SPDT relays whose contacts are rated 2 A at 250 VAC (inductive) and 5 A at 250 VAC (resistive). These relays are used for the connection of external alarm devices that are activated when the relay is energized.
  • Page 19 Single Zone Gas Monitor Figure 2-9. Typical AC External Alarm Relay 1 Wiring Figure 2-10. Typical DC External Alarm Relay 1 Wiring P/N: 3015-4256 Rev 13...

  • Page 20: Ma Current Loop Interface

    Single Zone Gas Monitor Jumper the ‘Live/Positive’ line of an external power source (DC devices) or the monitor’s AC input (AC devices) to the ‘Common’ terminal on the relay connector. Connect the ‘Live/Positive’ end of the strobe or horn to the ‘NO’ terminal of whichever level of alarm is appropriate for the application.

  • Page 21: Section 3. Operation

    Single Zone Gas Monitor SECTION 3. OPERATION 3.1. Front Panel Display and Controls Keypad Display Screen Use these buttons to: Displays current readings, menus, and 1. Enter function mode, then move parameters. arrow (>) on screen to the desired Enter Button function 2.

  • Page 22: General Operation

    Single Zone Gas Monitor 3.2. General Operation Once the SZ monitor has been installed, set up, and powered ON, the MEASURE 00485 pk monitor will make measurements in the area being sampled for desired 45ppm R134A gas without further operator intervention. The results of those measurements are shown on the front panel display.

  • Page 23: Display Screens

    3.3. Display Screens 3.3.1. Initial Power Up When the SZ monitor is first powered up all front panel lights are turned BACHARACH ON, and a splash screen appears showing the monitor’s firmware VERSION x.xx revision level. After a brief moment the Warm Up screen is display along with the front panel MONITOR ON light (green) blinking.
  • Page 24 Single Zone Gas Monitor #025 425PPM @ PPM LOG – Contains records of the last 200 measurements. Each 11/07/10 15:35 record shows the measurement’s date, time, and ppm level. Note that the interval at which the measurements are logged is determined by the LOG INT function.
  • Page 25 Single Zone Gas Monitor SPILLLVL – Sets the Spill Alarm level, adjustable from no lower than EDIT SPILL LEVEL the Leak Alarm level to a maximum value of 500 ppm, but not higher 0300 PPM than the Evacuate Alarm level. Factory default is 300 ppm. Refer to Appendix for recommended alarm settings for other gases.

  • Page 26: Gas Alarms

    ENTER to save that value and return to the previous screen. – Used to change the monitor’s calibration factor. This function is R134A CALFACTOR to be used ONLY with instructions from a Bacharach Service Center. 1.000 Factory default is 1.000.

  • Page 27: System Faults

    Single Zone Gas Monitor 3.5. System Faults 3.5.1. Overview If a system malfunction occurs, the SZ monitor will detect the problem and turn ON the front panel SYSTEM FAULT light. Additionally, an external alarm device may activate and the monitor’s internal audible alarm may sound if those features have been enabled (pages 14 and 22).

  • Page 28: Fault Codes

    Single Zone Gas Monitor 3.5.4. Fault Codes FAULT CODES ARE ADDITIVE. For example: A fault code of <1800> indicates that both a Purge Flow Fault <1000> and a Zone Flow Fault <0800> have occurred. Code Name Description <0001> Box Temperature Enclosure temperature is outside normal range (or IR detector has Fault failed).

  • Page 29: Clearing The Stored Ppm Log, Alarm And Fault Data

    Single Zone Gas Monitor 3.6. Clearing the Stored PPM Log, Alarm and Fault Data Up to 200 gas measurements, and 30 alarm and fault events are stored by the monitor. To clear stored data, first display the data to be cleared by using the PPM LOG, ALARMS or FAULTS function (page 22).

  • Page 30: The Diagnos Function

    Single Zone Gas Monitor 3.9. The DIAGNOS Function 3.9.1. Overview The DIAGNOS function displays sensor data and status information useful to a service technician for troubleshooting various fault conditions. Explanations of the data shown in these screens are given below. 3.9.2.

  • Page 31: The Calibration Function

    Single Zone Gas Monitor 3.10. The Calibration Function 3.10.1. Overview If greater than standard accuracy is desired, the factory’s default calibration factor of 1.000 may be adjusted by performing the calibration procedure as described below, and then selecting the monitor’s CAL function to enter the new calibration factor.

  • Page 32: Section 4. Maintenance

    Single Zone Gas Monitor SECTION 4. MAINTENANCE 4.1. Warnings and Cautions WARNING: Shock Hazard! Always disconnect AC power before working inside the monitor. WARNING: Before performing any operation or maintenance, verify connection of the AC power ground wire to the monitor’s ground stud. Under no circumstances should this monitor be operated or serviced without a protective ground.

  • Page 33: Fuses

    Single Zone Gas Monitor 4.5. Fuses The SZ monitor is protected from electrical damage by two, 1 A, 250 V, type “F” fuses (page 11). Carefully remove the fuses from their fuse clips and visually inspect each fuse for damage. Replace the fuses as required (P/N 0004-2620).

  • Page 34: Replacement Parts And Optional Accessories

    ** 3015-5716 is a conversion kit for older-style internal filters R-123 3015-3852 R-22 3015-3430 Gas Verification R-134a 3015-3437 R-123 3015-3438 WARNING: In compliance with agency approvals and safety regulations, the battery must be replaced with the specified Bacharach replacement part. P/N: 3015-4256 Rev 13...

  • Page 35: Service Centers

    Single Zone Gas Monitor 4.11. Service Centers Replacement parts and service can be obtained by contacting one of the following Bacharach Service Centers. United States Bacharach, Inc. 621 Hunt Valley Circle New Kensington, PA 15068-7074 Phone: 724-334-5000, 800-736-4666 Fax: 724-334-5723 Email: help@MyBacharach.com...

  • Page 36: Appendix A. Data Tables

    Single Zone Gas Monitor APPENDIX A. DATA TABLES A.1. Recommended Alarm Settings Refrigerant Leak PPM Spill PPM Evacuate PPM R113 R114 R123 R124 R134A R401A R402A R402B R404A R407A R407C R409A R410A R500 R502 R503 R507 R508B H1301 R408A FA188 R236FA N1230 R227...

  • Page 37: Response Time/Flow Rate

    Single Zone Gas Monitor A.2. Response Time/Flow Rate Gas-Sample Line Response Time Response Time Feet (Meters) Seconds (HGM) Seconds (AGM) 100 (30.5) 200 (61) 300 (91.4) 400 (123) 500 (152.4) Dependent on gas-sample line length; 0.25" OD x 0.17" ID tubing. P/N: 3015-4256 Rev 13...

  • Page 38: Appendix B. Agency Approvals

    VP of Product Development Date: 06 December 2010 The technical documentation file required by this directive is maintained at the corporate headquarters of Bacharach, Inc. European Standard EN14624: 2005 testing with R-134a (Halogen Gas Monitor Only). Min. Sensitivity Threshold 1 ppm Max.
  • Page 39 Single Zone Gas Monitor ∇ ∇ ∇ P/N: 3015-4256 Rev 13...
  • Page 40 Single Zone Gas Monitor Headquarters: 621 Hunt Valley Circle, New Kensington, PA 15068-7074 Toll Free: 800-736-4666 • Tel: +1-724-334-5000 • FAX: +1-724-334-5001 Website: www.MyBacharach.com • E-mail: help@MyBacharach.com Printed in U.S.A. ® Registered Trademark of Bacharach Inc. P/N: 3015-4256 Rev 13...

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