TGM 8 GAS Monitor instruction manual THIS MANUAL MUST BE CAREFULLY READ BY ALL INDIVIDUALS WHO HAVE OR WILL HAVE THE RESPONSIBILITY FOR INSTALLING, USING OR SERVICING THIS PRODUCT. Like any piece of complex equipment, this product will perform as designed only if installed, used and serviced in accordance with the manufacturer s instructions. OTHERWISE, IT COULD FAIL TO PERFORM AS DESIGNED AND PERSONS WHO RELY ON THIS PRODUCT FOR THEIR SAFETY COULD SUSTAIN SEVERE PERSONAL INJURY OR DEATH. The warranties made by Mine Safety Appliances Company with respect to these products are voided if the products are not installed, used and serviced in accordance with the instructions in this manual. Please protect yourself and others by following them. We encourage our customers to write or call regarding this equipment prior to use or for any additional information relative to use or repair. INSTRUMENT DIVISION 1-800-MSA-INST or FAX (412) 776-9783 MSA INTERNATIONAL (412) 967-3228 or FAX (412) 967-3373 Mine Safety Appliances Company 1996 - All Rights Reserved Manufactured by MSA Canada Inc., TORONTO, ONTARIO M3N 1X8 Distributed by MINE SAFETY APPLIANCES COMPANY PITTSBURGH, PENNSYLVANIA 15230 REV 3.1 07.06.98 212501
World Wide Product Support Locations Headquarters MSA International P.O. Box 426 Pittsburgh, PA 15230 TEL: (412) 967-3249 FAX: (412) 967-3451 Australia MSA (Aust.) Pty. Ltd. 137 Gilba Road P.O. Box 43, Wentworthville Sydney. Girraween NSW 2145, Australia TEL: (02) 688-0333 FAX: (02) 896-3224 Brazil MSA do Brasil, Ltda. Av. Roberto Gordon. 138 Caixa Postal 376 09901-970 Diadema Sao Paulo, Brazil TEL: (11) 445-1499 FAX: (11) 456-6433 Canada MSA Canada Inc. 148 Norfinch Drive North York, Ontario M3N 1X8, Canada TEL: (416) 667-9400 FAX: (416) 663-5908 Chile MSA de Chile Ltda. Avda. Salvador 1434 Casilla 16647, Correo 9 Santiago, Chile TEL: (2) 2255377 FAX: (2) 2250799 China Wuxi-MSA Safety Equipment Co. Ltd. 305 Xicheng Road Wuxi City. Jiangsu Province Peoples Rep. Of China TEL: (510) 2406134 FAX: (510) 2402310 France MSA de France 13 rue de la Guivernone BP617 95004 Cergy Pointoise Cedex TEL: (1) 34323432 FAX: (1) 30376305 Germany Auergesellschaft GmbH P.O. Box 620 D-12006 Berlin Germany TEL: (30) 6886-0 FAX: (30) 6886-115 Great Britain MSA (Britain) Ltd. East Shawhead Coatbridge, ML5 4TD Scotland, Great Britain TEL: (236) 424966 FAX: (236) 440881 Hungary MSA Auer Hungaria Biztonsagtechikai Kft. Gyomroi ut 140 H-1 108 Budapest X. Hungary TEL: (1) 1272-010 FAX: (1) 1272-010 India MSA (India) Ltd. P-25 Transport Depot Rd Calcutta 700088 India TEL: (33) 49-2206 FAX: (33) 4799368 Italy MSA Italiana S.p.A. P.O. Box 1719-20101 Milano, Italia TEL: (2) 89-20-19-18 FAX: (2) 82-59-228 Japan MSA Japan Ltd. 15-21 Roppongi 6-Chome Minato-Ku Tokyo 106. Japan TEL: (3) 3403-3918 FAX: (3) 3479-0460 Mexico MSA de Mexico S.A. de C.V. Francisco 1. Madero 84 Apartado 168 53500 Naucalpan de Juarez (Edo de Mexico) TEL: (5) 576-6444 FAX: (5) 359-4330 Middle East MSA Middle East Bin Hamoodah Bldg. Khalifa St. P.O. Box 46338 Adu Dhabi United Arab Emirates TEL: (2) 325-906 FAX: (2) 339-288 Netherlands MSA Nederland B.V. P.O. Box 39 1620 AA Hoorn Netherlands TEL: (2290) 503-03 FAX: (2290) 13340 Peru MSA del Peru S.A. Los Telares 139 Urb. Vulcano. Atc. Lima 3 Casilla 1933 (Mail) TEL: (14) 35-4065 FAX: (14) 36-1491 Russia Sibertech Monocrystal Institute Novosubirsk, Russia TEL: (7-3832) 33 12 79 FAX: (7-3832) 39 94 03 Southeast Asia MSA S.E. Asia Pte. Ltd. 51 Ayer Rajah Crescent #02-03 Singapore 0513 TEL: 776-1633 FAX: 778-2529 South Africa Boart MSA (Pty) Ltd. CNR. Kelvin St. & Steel Rd Spartan. P.O. Box 1710 Kempton Park 1620 TEL: (11) 394-5630 FAX: (11) 5648 Spain MSA Española S.A. Narciso Monturiol 7 Poligono Industrial Apartado de Correos 104 08960 Sant Just Desvern Barcelona TEL: (3) 372-51-62 FAX: (3) 372-66-57 Sweden AB Tegma Kopparbergsgatan 29 S-21444 Malmö TEL: (40) 80200 FAX: (40) 968-215 Switzerland MSA (Switzerland) Ltd. Grubenstrasse 24-26 CH-3072 Ostermundingen TEL: (31) 932-1151 FAX: (31) 932-113 Zimbabwe MSA Zimbabwe (Pvt.) Ltd. P.O. Box AY280, AMBY Harare Tel: (4) 486641 FAX: (4) 496357
1. The monitor described in this manual should be installed, operated, and maintained in strict accordance with any labels, cautions, warnings, drawings, instructions, and within the limitations stated. 2. The TGM Series must not be installed in areas or locations where explosive concentrations of combustible gases or vapours might occur in the atmosphere: Class I, Groups A, B, C, and D areas, as defined by the NEC. Because these monitors are not explosion-proof, they must be located in a non-hazardous area. 3. Use genuine MSA replacement parts when performing any maintenance on the TGM Series. Failure to do so may seriously impair instrument performance. Repair or alteration of the TGM Series beyond the scope of these instructions, or by anyone other than a certified MSA service person, could cause the product to fail to perform as designed and persons who rely on this product for their safety, could sustain severe bodily injury or death. 4. For safety reasons, this equipment must be operated and serviced by qualified personnel only. Read and understand the instruction manual completely before operating or servicing a TGM Series.
TGM8 Table of Contents Table of Contents Section 1 General Information... 1-1 Introduction... 1-1 LED Indicators, Relays & Audible Alarm...1-1 Warning and Alarm Condition, Sensor Failure Condition...1-1 Section 2 Installation and Specifications... 2-1 Installation of Monitor...2-1 Operating Specifications...2-1 External Connection: Remote Sensors, Relays, Power...2-3 Set-Up & Calibration...2-4 Active Points... 2-4 Warning & Alarm Delays, Alarm Latch, Display Mode...2-4 Audible Alarm Device...2-5 Section 3 General Operation... 3-1 Scanning, Auto-Ranging...3-1 Warning & Alarm...3-1 Sensor Failure...3-1 Section 4 Start-Up Procedure for TGM8...4-1 Calibration Log...4-3 Calibration Log...4-4 Parts List...4-5 TOC-1
TGM8 Table of Contents Section 5 Figure 1: TGM8 Enclosure Drawing...5-1 Figure 2: TGM8 Wiring Diagram...5-2 Figure 3: TGM8 Panel Layout/Connections...5-3 Figure 4: TGM8 Series Field Connection Diagram for RS-485 Series Communications Type Sensor...5-4 Figure 5: TGM8 Field Connection Diagram for 4-20 ma Analog Signal Type Sensor...5-5 Figure 6: TGM8 4-20 ma Sensor Wiring...5-6 Section 6 CSA Certification...6-1 FCC Compliance...6-1 Appendix A Figure 7A: Troubleshooting Guide for TGM8... A-1 Figure 7B: Troubleshooting Guide for TGM8... A-2 Figure 7C: Troubleshooting Guide for TGM8... A-3 Figure 7D: Troubleshooting Guide for TGM8... A-4 TOC-2
TGM8 Section 1 General Information Section 1 General Information Introduction This manual contains instructions for the MSA TGM8 Series. Description: The TGM8 Series is a microprocessor-based monitoring system designed to interface with a wide range of MSA Sensors. A total of eight (8) Sensors can be connected to the TGM8. The system comes complete with audible and visual status indication, relay outputs, and adjustable warning and alarm levels, complete with reset. The alarm relay is selectable for non-latching or latching with H1-9. Standard factory configuration is the non-latching mode. Sensor Failure Condition: The TGM8 Monitor has Sensor OK LEDs. The Sensor OK LED (Green) goes out if anyone of the remote sensor(s) fail and the sensor fail relay is energized. The sensor fail relay is non-latching. LED Indicators & Relays & Audible Alarm Warning Condition: When the gas concentration exceeds the warning setpoint, the AMBER warning LED turns on and the warning relay is activated. The warning relay is non-latching. When the Warning condition disperse below the setpoint, the relay will re-set. Alarm Condition: When the gas concentration exceeds the alarm setpoint, the RED Alarm LED turns on, the common alarm relay is activated and the audible alarm sounds. 1-1
TGM8 Section 2 Installation and Specifications Section 2 Installation and Specifications Installation of Monitor Install the TGM8 on a wall or structure that is free from shock or vibration. It should be protected against physical damage, water, heat and direct sunlight. Install the Monitor so that its door can be opened and accessed for service. Operating Specifications Power Requirements: Standard 110 volts AC 50/60 Hz ± 10% @ 0.5 Amps or (Optional) 220 volts AC 50/60 Hz ± 10% @ 0.25 Amps or (Optional) 24 volts DC ± 10% @ 1.5 Amps max. Signal Input: 4 to 20 milliamps, 2 or 3-wire connection, OR RS-485, 4-wire connection. Temperature: Operating: Storage: Sensor Power: 0 to 40 C (32 to 104 F) -10 to 50 C (14 to 122 F) 24 Volts DC @ 200 milliamps Relay Contact Ratings: 10 Amps 1/8 H.P., 125 Vac 6 Amps 1/8 H.P., 277 Vac 5 Amps 30 Vdc Number of Relays: WARNING: 8 Relay SPDT, ALARM: 1 Relay SPDT, TROUBLE: 1 Relay SPDT Digital Readout Scale (Optional): 4 Digit Display (Point # and Gas Level) Status Display: Discrete LED for WARNING, ALARM, and SENSOR OK for each point. Alarm & Warning Setpoints: Field Selectable: Warning = 25% or 35% of Full Scale Alarm = 50% or 100% of Full Scale (unless otherwise specified when ordering). Sensor Fail Setpoint: Non-adjustable Time Delays: Fixed delay of 5 minutes OFF delay for Warning and fixed delay of 5 minutes ON delay for Alarm. Field Selectable feature. 2-1
TGM8 Section 2 Operating Specifications Audible Alarm: Solid ON-Standard Factory Setting (80-90 db @ 1 ft.) OR Variable Sound Pulse Calibration: All units are tested and pre-calibrated at the factory. Enclosure: Standard - Metal NEMA 1 Optional - Fiberglass NEMA 4 Dimensions: Height: 15.0 (380 mm) Width: 12.0 (305 mm) Depth: 3.75 (95 mm) 2-2
TGM8 Section 2 External Connections External Connections Perform all wiring and conduit installation in accordance to the Canadian Electrical Code or the National Electrical Code or to local electrical requirements. Use separate conduits for power wires, relay wires and signal wires. Remote Sensors: A total of eight (8) remote sensors can be connected to the TGM8 Monitor. Sensor may be a 4-20 ma analog signal type, 2- or 3-wire connector, or RS-485 serial communications type. The RS-485 type sensors may be of different gas type and range. The TGM8 Monitor will automatically adjust itself to read and interpret the RS-485 sensors properly. Use shielded cable for wiring installation. Signal wiring must not be installed in the same conduit with power or relay wiring. Refer to appropriate sensor wiring diagram (pp. 5-4, 5-5, 5-6) and sensor instruction manual for more details. WHEN CONNECTING THE REMOTE SENSORS, MAKE SURE THAT ALL WIRING IS CORRECT AND THE FOUR LEADS OF THE RS-485 BUS ARE NOT INTERCHANGED, OR PERMANENT DAMAGE TO THE SENSOR MAY RESULT. NOTE MAKE SURE THAT EACH RS-485 TYPE SEN- SOR IS GIVEN A UNIQUE ADDRESS ON ITS AD- DRESS JUMPERS, OR THE TGM8 MONITOR WILL NOT BE ABLE TO COMMUNICATE WITH IT. Relays: Perform all wiring and conduit installation in accordance to the Canadian Electrical Code or the National Electrical Code or to local electrical requirements. Use separate conduits for power wires, relay wires and signal wires. Remote Sensors: A total of eight (8) remote sensors can be connected to the TGM8 Monitor. Sensor may be a 4-20 ma analog signal type, 2- or 3-wire connector, or RS-485 serial communications type. The RS-485 type sensors may be of different gas type and range. The TGM8 Monitor will automatically adjust itself to read and interpret the RS-485 sensors properly. Use shielded cable for wiring installation. Signal wiring must not be installed in the same conduit with power or relay wiring. Refer to appropriate sensor wiring diagram (pp. 5-4, 5-5, 5-6) and sensor instruction manual for more details. WHEN CONNECTING THE REMOTE SEN- SORS, MAKE SURE THAT ALL WIRING IS CORRECT AND THE FOUR LEADS OF THE RS-485 BUS ARE NOT INTERCHANGED, OR PERMANENT DAMAGE TO THE SENSOR MAY RESULT. NOTE MAKE SURE THAT EACH RS-485 TYPE SENSOR IS GIVEN A UNIQUE ADDRESS ON ITS ADDRESS JUMPERS, OR THE TGM8 MONITOR WILL NOT BE ABLE TO COMMUNICATE WITH IT. 2-3
TGM8 Section 2 Setup & Calibration Setup & Calibration Active Points: The number of active scanning points (same as number of remote sensors) can be set by the first three jumpers (H1-1, H1-2, H1-3). The jumpers are binary encoded. If no jumpers are inserted, then only one point (address 1) is scanned. To scan more points, insert jumpers such that the decimal equivalent of the binary code on H1-1, H1-2 and H1-3 plus one, equals the number of points to be scanned. (Refer to Figure 3, Page 5-3). Warning & Alarm Delays: There is a fixed delay of five minutes available for both warning and alarm. This feature is selected with jumper H1-5. When the jumper is out, there is no delay on the warning and alarm relays. When the jumper is inserted, a fixed fiveminute delay is imposed on the warning and alarm. In the case of the warning, this delay is an OFF delay meaning that the warning relay(s) will remain activated for five minutes after the warning condition has been diminished. In the case of the alarm, this delay is an ON delay, meaning that it takes five minutes for the alarm relay (and audible device) to activate after the first alarm condition occurs. (Refer to Figure 3, Page 5-3). Alarm Latch: Normally, all relays return to their inactive state once their condition has cleared. The alarm relay can be made to latch in the activated position, even after all alarms have cleared. By inserting jumper H1-9, the alarm relay will remain latched after all alarms clear until the reset button is pressed. (Refer to Figure 3, Page 5-3). NOTE Pressing the reset button during an alarm condition does not affect the latching. The reset button must be pressed after the alarm condition has cleared in order to de-activate the alarm relay. Display Mode: The display of the TGM8 is auto-ranging for all RS-485 type serial sensors. The display mode jumpers have no effect on any RS-485 type sensors. The display mode jumpers take effect only if analog sensor inputs are used. The incoming analog signals are scaled to the full scale setting of the display mode jumpers. There are two sets of display ranges available: Range A and Range B. Jumper H1-4 selects which display range is active. If jumper H1-4 is OUT, Range A is selected; if jumper H1-4 is IN, Range B is selected. The following table shows the various jumper positions for the different display modes: 2-4
TGM8 Section 2 Setup & Calibration Range A: Full Scale H2-2 H2-1 200 out out 100 out in 10.0 in out 10.0/100* in in Range B: To select the solid-on audible alarm mode, jumper H1-6 must be inserted. To select the variable-on audible alarm mode, jumper H1-6 must be removed (Refer to Figure 3). In both modes, pressing the reset button will silence the audible alarm, but will not have any effect on the alarm LED on the front panel or the alarm relay. Full Scale H2-2 H2-1 999 out out 500 out in 250 in out 75 in in * This is a special Display Range that displays the first four channels (1-4) as 0-10.0 ppm and the second four channels (5-8) as 0-100 ppm. This is useful for NO 2 / CO applications. Audible Alarm Device: The TGM8 has two audible alarm modes. The first is a solid-on mode that sounds the audible device continuously while the TGM8 is in an alarm state. The second is a variable-on mode that sounds the audible device in an eight second interval pulsed fashion. The time between pulses is fixed, but the time of the audible alarm is determined by the amount that the alarm sensor is exceeding the alarm setpoint. For example, if the setpoint is at 50% and an alarm comes in at 55%, the audible alarm would give short beeps every eight seconds. As the alarm level increases from 55% to 100%, the beeps become longer in duration until a solid tone appears at 100%. 2-5
TGM8 Section 3 General Operation Section 3 General Operation Scanning: The TGM8 will scan each active point in sequence, starting with point one. It will scan up to the last active point and then repeat from point one. As each point is scanned, the point number and the sensor input value are displayed for two seconds. Auto-Ranging: The TGM8 automatically detects the type of sensor connected on an RS-485 bus and determines its full scale value. All setpoints and the display are adjusted accordingly to match the various sensors full scale levels. If an analog sensor is connected, the display must be manually selected for the appropriate sensor full scale level using the display mode jumpers (Refer to Section 2 Display Mode on page 2-4). Warning and Alarm: The alarm function on the TGM8 is common to all points. Each point has individual warning relays and discrete LED s for Sensor OK, Warning, and Alarm. All points ar etied to a common alarm relay. The audible alarm will sound every time a new alarm occurs. It may be silenced by pressing the reset button on the front door of the monitor. LED for that point will turn on and after a delay defined by jumper H1-5, the relay will activate. At the same time the relay activates, the audible alarm will sound. The audible alarm may be silenced by pressing the reset button. If all active points drop below the alarm setpoint, the alarm will silence (if not silenced already by reset button) and the alarm level relay will de-activate if jumper H1-9 is not inserted. If jumper H1-9 is inserted for latching function, then the alarm relay will not de-activate automatically once all active points drop below the alarm setpoint. The relay will only deactivate once the reset button is pressed. Sensor Failure: If the TGM8 loses communications with one or more sensors, or if one or more sensors fail, that sensor OK LED will turn off and the sensor fail relay will activate. If an analog sensor is used and the input is between 1 ma and 3 ma, the sensor OK LED will turn off and the sensor fail relay will activate. Any analog input below 1 ma causes the TGM8 to ignore that analog input and treat that sensor as an RS-485 type sensor. If the level of any or more of the active points exceed(s) the warning setpoint, the warning LED for that point will turn on and the warning relay for that point will activate. If all active points drop below the warning setpoint, the warning LED will turn off and after a delay defined by jumper H1-5, the relay will return to its inactive state. If the level of any or more of the active points exceed(s) the alarm setpoint, the alarm level 3-1
TGM8 Section 4 Start-Up Procedure Section 4 Start-Up Procedure for TGM8 A B (A = Remote Sensor(s) B = TGM8 Monitor) Loosen the locking screws on front cover to open door. Check wiring and locate the power switch on main circuit board inside enclosure. Loosen the locking screws on front cover and open the sensor. Check wiring. * Ensure tha the binary coded jumper on H1-1 is properly inserted to reflect number of remote sensor(s) connected to TGM8 Monitor. Ensure that the binary coded jumper on H1-1 is properly inserted to address each individual sensor. (If RS-485, 4-wire connection to TGM8 Monitor). Turn power ON. * Green LED (POWER) Indicator on front panel should be ON. Green LED (Sensor OK) Indicator on front panel should be ON. * Red LED (SENSOR FAIL) Indicator on front panel should be OFF. * Amber LED (WARNING) Indicator on front panel should be OFF. * Red LED (ALARM) Indicator on front panel should be OFF. Note: Warning LED and Alarm LED may come on during initial power up. If audible alarm sounds, press RESET button to silence. IMPORTANT: Allow the gas monitor and sensor** to stabilize. * Applicable only to MSA UNTGS Sensor/Transmitter. ** Refer to Sensor/Transmitter manual for stabilization time. 4-1
TGM8 Section 4 Start-Up Procedure A B (A = Remote Sensor(s) B = TGM8 Monitor) Ensure that delay function selection jumper on main circuit board is NOT inserted. * Insert Test Jumper to 100% test position. Red LED (SENSOR FAIL), Amber LED (WARNING), Red LED (ALARM) on the Remote Sensor shall come on. (See Note 1). The audible horn sounds, Amber LED (WARNING) and Red LED (ALARM) on TGM8 Monitor shall also come on. (Press the RESET BUTTON to silence horn). Note: Warning and Alarm Relays will energize. Any remote equipment which may be connected to the associated relay contacts should now be activated. Note: TGM8 Monitor is factory preset as follows: WARNING Level: ALARM Level: Audible Signal: Delay Function: 35% of Full Scale 50% of Full Scale Activates on at ALARM level No Delay (jumper not inserted) The MSA TGM8 Monitor allows for field adjustment from factory settings. Please refer to Section 2 of this manual to change settings in order to meet the required sequence of operation. * * Remove Test Jumper from 100% test position. Repeat this alarm simulation test on other sensor(s) if needed. The initial function test and start-up is now completed. Close front door and sensor cover and secure locking screws. Note 1: Remote Sensor, other than MSA UNTGS Series Sensor, must use calibration check gas to simulate alarm condition. * Applicable only to MSA UNTGS Sensor/Transmitter. 4-2
TGM8 Section 4 Calibration Log Calibration Log DATE READING RESET DATE READING RESET 4-3
TGM8 Section 4 Calibration Log Calibration Log DATE READING RESET DATE READING RESET 4-4
TGM8 Section 4 Parts List Parts List * When ordering replacement parts, Please State MSA s P/N and S/N of unit. Item TGM8 Mother Board 25/35 & 50/100 (110 Vac Version) TGM8 Display Board Complete TGM8 Display Board, Less Display Ribbon Cable Assembly MSA Part No. 215292 213122 213123 Use only genuine MSA replacement parts when performing any maintenance on the TGM8 Monitor. Failure to do so may seriously impair instrument performance. Repair or alteration of the TGM8 Series Monitor beyond the scope of the instruction manual could cause the product to fail to perform as designed. Disconnect all power source(s) to the TGM8 before removing or changing any components. 4-5
TGM8 Section 5 Figure 1 Section 5 Figure 1: TGM8 Enclosure Drawing 5-1
TGM8 Section 5 Figure 2 Section 5 Figure 2: TGM8 Wiring Diagram 5-2
TGM8 Section 5 Figure 3 Section 5 Figure 3: TGM8 Panel/Layout Connections 5-3
TGM8 Section 5 Figure 4 Section 5 Figure 4: TGM8 Series Field Connection Diagram for RS-485 Series Communications Type Sensor 5-4
TGM8 Section 5 Figure 5 Section 5 Figure 5: TGM8 Field Connection Diagram for 4-20 ma Analog Signal Type Sensor 5-5
TGM8 Section 5 Figure 6 Section 5 Figure 6: TGM8 4-20 ma Sensor Wiring 5-6
TGM8 Section 6 CSA Certification & FCC Compliance Section 6 CSA Certification Certificate of Compliance No. LR 51078-5 FCC Compliance This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. Device may not cause harmful interference. 2. Device must accept any interference received, including interference that may cause undesired operation. NOTE This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his or her own expense. Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate this equipment. 6-1
TGM8 Appendix A Figure 7A Appendix A Figure 7A: Troubleshooting Guide for TGM8 A - 1
TGM8 Appendix A Figure 7B Appendix A Figure 7B: Troubleshooting Guide for TGM8 A - 2
TGM8 Appendix A Figure 7C Appendix A Figure 7C: Troubleshooting Guide for TGM8 A - 3
TGM8 Appendix A Figure 7D Appendix A Figure 7D: Troubleshooting Guide for TGM8 A - 4
Manufactured by MSA Canada Inc. TORONTO, ONTARIO, CANADA M3N 1X8 Call Toll Free @ 1 (800) 267 0672