HGM-SZ Halogen Gas Monitor - Single Zone Instruction 3015-4256 Installation / Operation / Maintenance Rev. 5 April 2009 UL 61010-1 CSA 22.2 No.
WARRANTY Bacharach, Inc. warrants to Buyer that at the time of delivery this Product will be free from defects in material and manufacture and will conform substantially to Bacharach Inc.'s applicable specifications. Bacharach's liability and Buyer's remedy under this warranty are limited to the repair or replacement, at Bacharach's option, of this Product or parts thereof returned to Seller at the factory of manufacture and shown to Bacharach Inc.
Table of Contents 1 INTRODUCTION........................................................................................................................................ 1 How to Use This Manual ........................................................................................................................... 1 Warning Statements .................................................................................................................................. 1 Caution Statements .....................
Parameter ............................................................................................................................................ 20 Factory Default .................................................................................................................................... 20 The P-CHK Function ............................................................................................................................. 20 Overview..................................................
1 Introduction How to Use This Manual Thank you for investing in a BACHARACH HGM-SZ (Halogen Gas Monitor - Single Zone). This manual provides important information on how to install, operate, and service the HGM-SZ monitoring unit. To assure operator safety and the proper use of the monitor, please read, understand, and follow the contents of this manual. If you have a working knowledge of gas monitors, you will find this manual useful as a reference tool.
Safety Precautions AC Power Supply The HGM-SZ 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. It is highly recommended that the monitor be connected directly to the AC power source, preferably on its own circuit (with UPS or surge protection). A switch or circuit breaker rated 1.0 A, 250 VAC, with a minimum terminal spacing of 3.0 mm must be attached to the monitor’s AC power leads.
Functional Overview General Description Refrigerant monitors are specified to support compliance to federal, state and local safety codes governing gas emissions. Avoiding significant refrigerant loss reduces equipment replacement costs, maintains equipment efficiency, promotes safety, and protects the environment. The Bacharach HGM-SZ (Halogen Gas Monitor Single Zone) is designed to continuously test for the presence of refrigerant gas in an area that is located up to 500 ft (15.2 m) away from the monitor.
Suggested Location of Sampling Point At the point of a refrigerant gas leak, the gas is nearly pure. As refrigerant gas is dispersed into the air, the gas molecules diffuse, causing a dilution of the original concentration. The HGM-SZ measures the gas concentration at the point the sample is collected. Therefore, if the termination of the collection line is not at the exact point of the gas leak, then the monitor will read a diluted mixture of refrigerant gas and air.
2 Installation Installation Considerations Warnings & Cautions WARNING: Explosion hazard! Do not mount the HGM-SZ in an area that may contain flammable liquids, vapors or aerosols. Operation of any electrical equipment in such an environment constitutes a safety hazard. WARNING: Shock hazard! Always disconnect AC power before working inside the monitor. CAUTION: Drilling holes in the HGM-SZ enclosure may damage the unit and will void the warranty. Please use knockouts provided for electrical connections.
Mounting Instructions The HGM-SZ should be installed plumb and level and securely fastened to a rigid mounting surface. The enclosure utilizes keyhole mounting designed for ¼ inch fasteners. Install the four screws as displayed in the diagram below or by using the provided mounting template. Allow the screw heads to protrude approximately ¼ inch.
Tubing Considerations Use ¼ in. outside diameter (0.040 in. wall) flex tubing for all air lines (P/N 304-2742 or equivalent). The tubing should be clean and free of moisture or other contaminants. The tubing should be cut cleanly with a sharp knife and care should be taken not to distort the tubing end. IMPORTANT! Due to the reactive nature of refrigerant gas, it is important to use materials that will not absorb the gas as it passes through the sampling system.
Interior Schematic IR BENCH GAS OUT UNIVERSAL POWER SUPPLY SYSTEM BOARD IR BENCH GAS IN CLOCK BATTERY AC INPUT GROUND STUD AC INPUT TERMINALS LINE FUSES 1.0A, 250V, F CHARCOAL FILTER (Used to remove refrigerant gas from the purge air) EXTERNAL ALARM RELAY CONNECTOR *AIR SAMPLE PUMP FACTORY DEFAULT SWITCH 4–20 mA (Output only DO NOT apply power!) HYDROPHOBIC FILTER *NOTE: The plastic cable tie surrounding the air pump is to ensure safe handling during shipping. Please remove before operating.
Electrical Wiring The HGM-SZ 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. It is highly recommended that the monitor be connected directly to the AC power source, preferably on its own circuit. The connection should be completed with UL approved multi-conductor wire (minimum 16 AWG), rated 300 VAC at 105°C. Locate a convenient service knockout and install electrical conduit in the typical manner.
Connecting External Alarms Overview The HGM-SZ includes four SPDT relays whose contacts are rated 2 A at 250 VAC. These relays are used for the connection of external alarm devices that are activated when the relay is energized.
Typical External Alarm Relay 1 Wiring Jumper the ‘Neutral’ line of an external power source or the monitor’s AC input to the ‘Common’ terminals on the relay connector. Connect one end of the strobe or horn to the ‘NO’ terminal of whichever level of alarm is appropriate for the application. The other end of the strobe or horn is connected to the other leg of the external power source. For protection, install an in-line fuse of the appropriate size and design for the external alarm device being used.
Notes: 12 Instruction 3015-4256
3 Operation Front Panel Display & Controls Display Screen ENTER Press this button to: 1. Clear peak reading 2. Save a function screen’s displayed value SILENCE / QUIT Press this button to: Keypad Use these buttons to: 1. Enter function mode, then move arrow (>) on screen to the desired function 2. Scroll through data MONITOR ON LED (Green) SYSTEM FAULT LED (Yellow) ALARM Light (Red) 1. Flashes during warm-up 2.
If a system fault occurs (see Fault Code list on Page 19), the monitor responds by turning ON the front panel SYSTEM FAULT (yellow) light and energizing the fault relay. If the internal audible alarm is turned ON, it too will activate (AUDALRM page 16). An optional external alarm device can be connected to the fault relay to alert personnel that a system fault has occurred (Page 10).
Function Screens The Function screens are used to display stored data and to set up the monitor. From the Data Display screen, press any Keypad button to display the first Function Menu screen. Next, use the Keypad buttons to move the arrow (>) on the display until it is next to the desired function, and then press the ENTER button to select that function.
The DIAGNOS Function (Page 22). GAS TYPE – Used to select of any one of the refrigerant gas types listed for monitoring. (See the gas library in the Specifications section.) Factory default is R-134a. Use the Keypad to select the desired gas type, and then press ENTER to save the selection and return to the previous screen. LEAKLVL – Sets the Leak Alarm level, adjustable from 1 to 300 ppm. Factory default is 100 ppm.
SILENCE – Used to enter a length of time for which the internal audible alarm and the external alarm are turned OFF when the front panel SILENCE button is pressed. The factory default is 300 seconds (5 minutes). If the cause of the alarm/fault has not been cleared at the end of this time period, the internal audible alarm and the external alarm device are reactivated. Use the Keypad to enter the desired time period, and then press ENTER to save that value and return to the previous screen.
Gas Alarms Overview If the refrigerant gas ppm level in the area being monitored exceeds its preset Leak, Spill, or Evacuate Alarm level (Page 16), the HGM-SZ will detect this alarm condition and turn ON the front panel ALARM light. Additionally, an external alarm device may activate and the monitor’s internal audible alarm may sound if those features have been enabled (Pages 10 & 16).
Viewing the Fault Log From the Data Display screen, use the Keypad buttons to place the arrow (>) on the display next to the FAULTS function. Then press ENTER to display the fault log. #03 <0800> @ 11/12/08 08:17 #04 <0000> @ 11/12/08 08:30 FAULT CODE<1800> 12 ZONE FLOW FAULT CODE<1800> 13 PURGE FLOW The fault log shows the monitor’s current fault status.
Clearing the Stored PPM Log, Alarm & 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 15). Next, press the Right Arrow Keypad and ENTER buttons at the same time. A single, long tone should be heard when the data has been successfully cleared.
Screen Display 14.72 * AMB14.81 0.09dif <0000> Manifold Pressure ∗ Stored Ambient Pressure Pressure Difference Fault Code Manifold Pressure – Current manifold pressure in psia. Stored Ambient Pressure – Stored ambient pressure in psia. Pressure Difference – The difference between the current manifold pressure and the stored ambient pressure. Fault Code – Current fault code (Page 19).
The DIAGNOS Function 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. Keypad Functions From the Data Display screen, use the Keypad buttons to place the arrow (>) on the display next to the DIAGNOS function. Then press ENTER to display the first of two Diagnostic screens.
The Calibration Function 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. IMPORTANT! Changing the calibration factor will VOID the factory calibration. Typically, the monitor will remain within the factory-calibrated accuracy indefinitely and no calibration is required.
4 Maintenance Warnings & Cautions WARNING: Always disconnect AC power before working inside the monitor. CAUTION: When working inside the monitor, be very careful not to dislodge any electrical wiring or pneumatic tubing. The HGM-SZ contains sensitive electronic components that can be easily damaged. Be careful not to touch or disturb any of these components. Charcoal Filter The Charcoal Filter (Page 8) removes refrigerant gas from the purge-air stream during the purging process.
Bench Replacement Items Required: Replacement IR Optical Bench Kit 3015-4572: o IR Bench Assembly: 3015-5086 (550 mW) o Cable Ties (Qty. 2) 3015-2835 o Instruction Sheet 3015-4571 Medium Phillips Head Screwdriver Small Flat Blade Screwdriver Wire Cutter (for removing cable ties) Removing the IR Bench 1. Find the AC power source for the HGMSZ and switch OFF the AC circuit breaker. Ensure that the monitor’s front panel green MONITOR ON indicator is OFF. 2.
2. Refer to Figure 2 to perform the following steps to remove the old IR bench: a. Pull the 10-pin and 12-pin electrical connectors from their sockets on the IR bench. Note that these connectors may have been secured in place for shipping purposes with either hot-glue or cable ties. As necessary, either pry the hot-glue from each connector, or cut off the cable ties. b. Pull the tubing from the gas-inlet and gas-outlet fittings on the IR bench. c.
Adjusting the IR Bench Voltage 8. Enter the monitor’s set-up mode and display the IR bench voltage adjustment screen as follows: a. With the monitor in its MEASURE mode, use the Keypad buttons to place the arrow (>) on the display next to the CAL function. b. Press the Right-Arrow and ENTER buttons at the same time to display the revision screen. c. Press the QUIT button to display the set-up screen. d.
Replacement Parts & Optional Accessories Replacement Parts Item Description Part Number HGM-SZ complete assembly 3015-4200 Battery: 204-0020* Filters: Charcoal, Zero Air 3015-4306 Hydrophobic 07-1650 Termination (gas sample line) 3015-3420 Fuse: 1.0 A, 250 V, Type “F” 04-2620 Replacement Pump 3015-5176 Tubing: ¼ in OD by the foot 304-2743 250 ft.
Service Centers Replacement parts and service can be obtained by contacting one of the following Bacharach Service Centers. United States México Bacharach, Inc. 621 Hunt Valley Circle New Kensington, PA 15068 Phone: 724-334-5051 Fax: 724-334-5723 Email: help@bacharach-inc.com Bacharach de México Playa Regatas No. 473 Tercer Piso Col. Militar Marte Delegación Iztacalco, 08830 México D.F. México Phones: +52-555-634-7740 +52-555-634-7741 FAX: +52-555-634-7738 Email: bacharach@prodigy.net.
Appendix A HGM-SZ Specifications Product Type Multiple refrigerant gases and single area monitoring system for low level continuous monitoring of CFC, HCFC and HFC refrigerant gasses used in most commercial refrigeration systems. System design supports compliance to the refrigerant monitoring requirements of ANS/BSR ASHRE 15-1994.
Specifications, Con’t. Response Time/Flow Rate (Dependent on gas-sample line length; 0.25" OD x 0.17" ID tubing) Gas-Sample Line Feet (Meters) 100 (30.5) Response Time Seconds 15 200 (61) 28 300 (91.4) 44 405 (123) 500 (152.
Recommended Alarm Settings & Gas Enumeration Refrigerant Leak PPM Spill PPM Evacuate PPM Decimal Hex 00 R11 100 300 500 0 R12 100 300 500 1 01 R22 100 300 500 2 02 R23 100 300 500 3 03 R113 100 300 500 4 04 R114 100 300 500 5 05 R123 25 35 50 6 06 R124 100 300 500 7 07 R134A 100 300 500 8 08 R401A 100 300 500 9 09 R402A 100 300 500 10 0A R402B 100 300 500 11 0B R404A 100 300 500 12 0C R407A 100 300 500 13 0D R407C 100
NOTES: Instruction 3015-4256 33
Headquarters: 621 Hunt Valley Circle, New Kensington, PA 15068 PH: 724-334-5000 • Toll Free: 800-736-4666 • FAX: 724-334-5001 Website: www.bacharach-inc.com • E-mail: help@bacharach-inc.com Printed in U.S.A. ® Registered Trademark of Bacharach Inc.
