3M MACURCO GD-6 Owner's Manual
Contents
1. 24VAC remote alarm Exhaust fan Controls relay amp transformer Exhaust fan GD 6 Typical Layout in Parking Garage GD 6 Space sensors equally GD 6 Air inlet door damper im louver Air inlet door damper louver auxiliary functions such as dialers lt amp Alarm Control Panel S Typical Connection to Alarm Control Panel 3M Macurco GD 6 Combustible Gas Detector can be used with 12VDC or 24VDC fire panels Alarm panel provides battery backed up power to 3M Macurco GD 6 Combustible Gas Detector 3M Macurco GD 6 Combustible Gas Detector dry contact fan relay can use panel power or fan power Check ratings on panel amp fan Match fan relay contacts to fan size and coil voltage to power source Alarm Control Panels are available with many features amp can control other devices such as smoke detectors fire detectors amp burglar alarms exhaust fan 2 12 or 24VDC power battery backed up Typical Connection to the 3M Macurco Detection and Ventilation Control Panel DVP 120 Gas detection and exhaust fan control is provided by 3M Macurco DVP 120 system This System will use the GD 6 Combustible Gas to current transducer Nitrogen Dioxide to current transducers or Carbon Monoxide to current transducers Each transducer will measure the level of the ta2. 4 9 14 Output in mA GD 6 20 FE vuoz v ov GD 6 rear view with Modular Connectors Typical Multiple 3M Macurco GD 6 Combustible Gas Detector Installation INSTALLATION NOTES One sensor per 900 square feet approximately 2 If the gas used is natural gas methane or Hydrogen H2 mount the 3M Macurco GD 6 Combustible Gas Detector high on a wall about one foot down from the ceiling If the gas used is propane LP mount the 3M Macurco GD 6 Combustible Gas Detector on a wall or column one foot above the floor See applicable building code for fan size vs air changes per periods of time Make sure there are air inlets to provide adequate air flow throughout the building 3M Macurco GD 6 Combustible Gas Detector fan relays are dry contact amp can switch up to 240V Several fan relays starters may be used Match the relays to the fan size E 4 20 12 24 or POWER N C N 0 spor fan T RELAY spot fan 1 RELAY x ALARM aL gt 1 RELAY spor fan RELAY AC or DC No Polarity N NC NO NC AC or DC No Polarity A NC 24VAC Transformer Relay starter 2 24VAC MAIN FAN POWER Coil Exhaust Fans
3. 24VDC 75 in alarm two relays 50mA fan relay only 23mA stand by Shipping Weight 1 pound 0 45 kg e Size 4 1 2 x 4x 2 1 8 in 11 4 x 10 2 x 5 4 cm Color dark gray Connections plugs terminals Mounting box not included 4x4 electric Fan relay 5A 240VAC pilot duty SPDT e Fan relay actuation selectable at 1 2 3 4 5 6 7 8 9 10 default 11 12 13 14 15 16 17 18 19 20 LEL Fan Delay Settings of 0 1 3 default 5 and 10 minutes e Fan Minimum Run Time settings are OFF default 3 5 10 or 15 minutes Alarm relay 0 5A 200V 10VA Alarm relay actuation selectable N O default or N C Alarm relay settings OFF 5 10 15 20 default 2596 LEL Current loop 4 20mA for 0 50 LEL e Operating environ 0 F to 125 F 18 C to 52 C 10 to 90 RH INSTALLATION AND OPERATING INSTRUCTIONS 4 The following instructions are intended to serve as a guideline for the use of the 3M Macurco GD 6 Combustible Gas Detector Controller and Transducer It is not to be considered all inclusive nor is it intended to replace the policy and procedures for each facility WARNING This detector monitors for the presence and concentration level of certain specified airborne gases Misuse may produce an inaccurate reading which means that higher levels of the gas being monitored may be present and could result in overexposure and cause sickness or death For proper use see supervisor User I
4. Using the detector outside of this temperature range may adversely affect product performance and result in sickness or death This detector helps monitor for the presence and concentration level of certain specified airborne gases Misuse may produce an inaccurate reading which means that higher levels of the gas being monitored may be present and could result in overexposure and cause sickness or death For proper use see supervisor or User Instructions or call 3M in U S A 1 800 243 4630 In Canada call Technical Service at 1 800 267 4414 Each time the unit is turned on it performs a self test which activates visual alarms If the self test fails or if all the alarms do not activate do not use Failure to do so may adversely affect product performance and result in sickness or death Do not cover or obstruct visual alarm Doing so may adversely affect product performance and result in sickness or death Do not disassemble unit or attempt to repair or modify any component of this instrument This instrument contains no user serviceable parts and substitution of components may impair product performance and result in sickness or death Using a certified gas with a concentration other than the one listed for this instrument and sensor when conducting a calibration or calibration verification test bump test will produce inaccurate readings This means that higher levels of the gas being monitored may be present and could result in overexpos
5. From normal operation mode press the Next button 3 times to get to the Test Mode tSt Press the Enter button once to get into the Test Menu Press the Next button to scroll through the four test options and press Enter to initiate the selected test Note that if the relay or 4 20mA output has been disabled the test selection will not be displayed in the test menu Art Alarm Relay Test 10 seconds Frt Fan Relay Test 60 seconds 42t 420 loop test 25 seconds gtS Gas Test 3 minutes no output to the panel during the gas test The display will flash during the test or in the case of the gas test the level will alternate with the expected gas mE Pro or Hy Once the test is complete the display will return to steady display To exit the test menu press the Next button until is displayed then press Enter to return to normal mode SX Go 16 Combustible Gas Test WARNING The following steps must be performed when conducting a calibration or calibration verification test bump test to ensure proper performance of the monitor Failure to do so may adversely affect product performance and result in sickness or death When performing a calibration or calibration verification test bump test only use certified calibration gas at the required concentration level Do not calibrate with expired calibration gas If the instrument cannot be calibrated do not use until the reason can be determined and corrected D
6. WARNING Using a certified gas with a concentration other than the one listed for this instrument and sensor when conducting a calibration or calibration verification test bump test will produce inaccurate readings This means that higher levels of the gas being monitored may be present and could result in overexposure and cause sickness or death For proper use see supervisor or User Instructions or call 3M in U S A 1 800 243 4630 In Canada call Technical Service at 1 800 267 4414 General There are multiple ways to test the 3M Macurco GD 6 Combustible Gas Detector after installation Operation Test Manual Operation Test Combustible Gas Test and Quick Gas Test The 3M Macurco GD 6 Combustible Gas Detector also has the ability to test itself automatically and does so every 2 1 2 minute cycle If the unit detects an improper voltage or inoperable component it will default into Error mode In Error mode the unit will Flash Green and both the fan amp alarm relay will be actuated Check that the 3M Macurco GD 6 Combustible Gas Detector OPERATING LED type light is illuminated continuously If not do not proceed with the tests If the unit is in error mode contact your local representative or 3M Macurco Technical Service representative for information on resolving the problem 15 Operation Test Remove the single screw in the middle of the front cover of the 3M Macurco GD 6 Combustible Gas Detector Remove the fron
7. menu Then press the Enter button to enter the Con menu The first selection is the dEF or Default setting Press Enter If it is already in Default configuration there will be no action If it is not already in Default configuration nO will be displayed Press Next to change it to YES flashing then press Enter to confirm the change solid and press Enter again to return to dEF in the Con menu Press Next until End is displayed then press Enterto return to normal operation Selecting Power Up Test Option PUt To select the Power Up Test Configuration in normal mode press the Next button twice to get to Con or the Configuration menu Then press the Enter button to enter the Con menu Then press the Next button to get to the second selection PUt or Power Up Test setting Press Enter If the test is On press Next to turn it OFF flashing then press Enter to confirm the change solid and press Enter again to return to PUt in the Con menu Press Next until End is displayed then press Enter to return to normal operation 12 Selecting Display Option dSP 0 select the Display Configuration in normal mode press the Next button twice to get to Con or the Configuration menu hen press the Enter button to enter the Con menu Then press the Next button twice to get to the third selection dSP or Display setting Press Enter If the display is press Next to turn it OFF fl
8. recommendations If any component becomes defective during the warranty period it will be replaced or repaired free of charge if the unit is returned in accordance with the instructions below This warranty does not apply to units that have been altered or had repair attempted or that have been subjected to abuse accidental or otherwise The above warranty is in lieu of all other express warranties obligations or liabilities THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE ARE LIMITED TO A PERIOD OF TWO 2 YEARS FROM THE PURCHASE DATE 3M shall not be liable for any incidental or consequential damages for breach of this or any other warranty express or implied arising out of or related to the use of said gas detector Manufacturer or its agent s liability shall be limited to replacement or repair as set forth above Buyer s sole and exclusive remedies are return of the goods and repayment of the price or repair and replacement of non conforming goods or parts FOR MORE INFORMATION In United States contact Website www 3M com OccSafety Technical Assistance 1 800 243 4630 For other 3M products 1 800 3M HELPS or 1 651 737 6501 22 23 24 3M Occupational Health and Environmental Safety Division 3M Center Building 0235 02 W 70 St Paul MN 55144 1000 Printed in U S A 3M 2008 2011 All rights reserved 3M and Macurco are trademarks of 3M Company used under license in Canada 34 8707 586
9. the gas cylinder if 25psi or less b Unit needs to be re calibrated go through recalibration and re test c Detector is in need of servicing return unit to factory for servicing d Detector has fan relay set to disable OFF or 20 LEL Set fan relay to 5 LEL and repeat the test Remove the gas from the sensor Proceed to test the alarm relay or replace the top cover Testing the Alarm Relay Note The gas concentration to activate the Alarm relay depends on the setting Connect the 20 LEL cylinder of Combustible Gas to the regulator Ensure that the gas used for calibration matches the gas selected in the 3M Macurco GD 6 Combustible Gas Detector configuration 1 2 3 4 With the display function turned On and the gas concentration reaching the Alarm Relay setting 20 LEL for example 6 Check the pressure gauge If there is 25psi or less the cylinder should be replaced Place the test hood over the gas sensor Turn on the regulator to start the gas flow The Fan relay should activate according to the settings the display will flash back and forth between ALr and 20 The buzzer will sound indicating Alarm if the buzzer is turned On With the display function turned off the display does not show the gas concentration but will show ALr when the Alarm relay is activated Note If the Alarm relay fails to operate within 2 minutes consider these possibilities a Gas cylinder is empty check
10. 2 9 Requester Creator File Name Structure Date Farrel Allen deZinnia 34870758629 indd SS 41964 6 17 11 Printed Colors Front Printed Colors Back Match Colors This artwork has been created as requested by 3M 3M is responsible for the artwork AS APPROVED and assumes full responsibility for its correctness
11. Macurco Combustible Gas Detector Controller and Transducer User Instructions GD 6 GAS DETECTOR DO NOT PAINT IMPORTANT Keep these User Instructions for reference GD 6 TABLE OF CONTENTS GENERAL SAFETY INFORMATION Intended Use List of Warnings and Cautions USE INSTRUCTIONS AND LIMITATIONS Do Not Use For General Description Features Specifications INSTALLATION AND OPERATING INSTRUCTIONS General Information Location Installation Garage diagram 4 20mA Output dia Multiple Device diagram Alarm Control Panel diagram DVP 120 Control Panel diagram Power Up 11 Operation AA Default Factory Settings 11 Gas Selection 12 Display setting 213 Buzzer setting 13 Alarm Relay setting 13 Alarm Relay Configuration 13 Fan Relay setting 13 Fan Relay Delay setting 13 Fan Minimum Runtime setting 4 20mA Output setting On Board Diagnostics Sensor Poisons 14 MAINTENANCE 15 Cleaning 15 Testing 15 Operation Test 16 Manual Operation Test 16 Combustible Gas Test AT Quick Gas Test 20 21 Field Calibration Procedure Zero the Sensor Calibration 3M GAS DETECTION PRODUCTS WARRANTY FOR MORE INFORMATION GENERAL SAFETY INFORMATION Intended Use The 3M Macurco GD 6 Combustible Gas Detector Con
12. ame spacing as for smoke detectors 30 foot centers 900 square feet per detector Note alcohols ammonia cleaning solvents paint thinner gasoline vapors and aerosol propellants aerosol cans such as hair spray usually contain a combustible gas may cause alarms Installation 1 2 The 3M Macurco 60 6 Combustible Gas Detector mounts on a type 45 electrical box supplied by the contractor Connect the 3M Macurco GD 6 Combustible Gas Detector to Class 2 power supply only It is suggested to use a separate transformer for powering the unit or units because of possible interference s from other devices on the same power supply Connect the 3M Macurco GD 6 Combustible Gas Detector to the control cables with terminal plugs When making connections make sure the power is off Typical installation in small garage Typical layout in Relay small garage 24VAC coil Controls transformer amp relay fan GD 6 mount centrally _ Y _ Main fan power air inlet lt door louver lt a to computer or to remote 24VAC alarm control panel There are two terminals for Power 12 to 24VAC or 12 to 48VDC with no polarity preference There are two terminals for the dry alarm relay contacts again with no polarity preference The alarm relay can switch up to 0 5A 200V or 10VA The alarm relay is activated if gas reaches or exceeds the alarm settings The alarm relay can be configured to normally op
13. ashing then press Enter to confirm the change solid and press Enter again to return to dSP in the Con menu Press Next until End is displayed then press Enter to return normal operation Selecting Buzzer Option bUZ 0 select the Buzzer Configuration in normal mode press the Next button twice to get to Con or the Configuration menu hen press the Enter button to enter the Con menu The fourth selection is the bUZ or Buzzer setting Press Next three imes to get to bUZ then press Enter If the display is On press Next to turn it OFF flashing then press Enter to confirm he change solid and press Enter again to return to bUZ in the Con menu Press Next until End is displayed then press Enterto return to normal operation Selecting Alarm Relay Setting ArS 0 select the Alarm Relay Setting in normal mode press the Next button twice to get to Con or the Configuration menu Then press the Enter button to enter the Con menu The fifth selection is the ArS or Alarm Relay Setting Press Next four times to get to ArS then press Enter If the display is OFF disabled press Mextto change it to 5 10 15 20 or 25 LEL flashing hen press Enter to confirm the change solid and press Enter again to return to ArS in the Con menu Press Next until End is displayed then press Enter to return to normal operation Selecting Alarm Relay Configuration Arc 0
14. en default N 0 or normally closed N C and will activate if the gas concentration exceeds alarm set point 5 10 15 20 default 25 LEL It will deactivate once the gas concentration drops below the alarm set point Note that the disable setting will cause the alarm relay not to engage at all The dry contact SPDT fan relay has three terminals The common COM normally open N O and the normally closed N C contact The fan relay can switch up to 5 0A up to 240VAC see OPERATION section of these User Instructions for details on relay settings The fan relay can be wired to normally open N O or normally closed N C and will engage if the fan setting 1 2 3 4 5 6 7 8 9 10 default 11 12 13 14 15 16 17 18 19 20 LEL is exceeded for the fan relay delay time 0 1 3 default 5 10 minutes The fan relay will disengage once both of these conditions have been met 1 Combustible gas concentration has dropped below fan setting and 2 Fan relay run time 0 default 3 5 10 15 minutes has been exceeded Note that the disable fan setting will cause the fan relay to not engage The fan relay will engage in trouble fault condition and will disengage once trouble fault condition is cleared The Current Loop is 4mA in clean air and 4 20mA for 0 50 LEL exhaust 50 37 5 25 12 5 0 Percent 96 LEL
15. etector can be used with 12VDC or 24VDC fire security panels A WARNING Use only for monitoring the gas which the sensor and instrument are designed to monitor Failure to do so may result in exposures to gases not detectable and cause sickness or death For proper use see supervisor or User Instructions or call 3M in U S A 1 800 243 4630 In Canada call Technical Service at 1 800 267 4414 Do Not Use For The 3M Macurco GD 6 Combustible Gas Detector is NOT intended for use in hazardous locations or industrial applications such as refineries chemical plants etc DO NOT mount the 3M Macurco 60 6 Combustible Gas Detector where the normal ambient temperature is below 0 F or exceeds 125 F 18 C or above 52 C The 3M Macurco GD 6 Combustible Gas Detector mounts on a type 4S electrical box supplied by the contractor WARNING The 3M Macurco GD 6 Combustible Gas Detector may not function effectively below 0 F or above 125 F 18 C or above 52 C Using the detector outside of this temperature range may adversely affect product performance and result in sickness or death General Description The 3M Macurco GD 6 Combustible Gas Detector is a low voltage dual relay combustible gas EX detector and automatic ventilation controller The 3M Macurco GD 6 Combustible Gas Detector uses a microcomputer controlled electronic system to measure the concentration of combustible gas actuate
16. for the gas for 45 seconds If no gas is applied or detected in that time the display will return to CAL 9 When the sensor detects the gas the display will flash back and forth between the gas concentration and SPn and the calibration will progress The display will show this for a maximum of 165 seconds 10 When the calibration is successful the display will flash back and forth between 10 and PAS 11 Remove the gas The display will return to SPn then normal mode The calibration is done 12 If the calibration fails the display will flash back and forth between the gas concentration and FAL fail If this occurs check the pressure gauge on the regulator If the pressure is less than 25psi the flow of gas may not be adequate to properly calibrate the unit If there is proper pressure in the cylinder repeat steps 4 through 11 If the unit fails to calibrate twice contact 3M Macurco Technical Assistance at 1 800 237 9049 13 Disassemble the cylinder and regulator 14 Re assemble the 3M Macurco GD 6 Combustible Gas Detector make sure the LED is aligned with the hole in the front case 15 See Calibration Flowchart 3M FIXED GAS DETECTION PRODUCTS LIMITED WARRANTY 3M warrants the GD 6 gas detector will be free from defective materials and workmanship for a period of two 2 years from date of manufacture indicated on the inside cover of the GD 6 provided it is maintained and used in accordance with 3M instructions and or
17. he process is successful the display will read __0 alternating with PAS blinking Zero Calibration complete If the process was not successful the display will read __1 alternating with Fail blinking Zero Failed If this occurs repeat steps 2 through 4 If the sensor fails to zero twice contact Technical Assistance 1 800 237 9049 To return to Normal Mode press Enter and then press Next until End is displayed Press Enter to return to Normal Mode alibration Remove the Philips screw on the front of tne 3M Macurco GD 6 Combustible Gas Detector Pull the front cover of the unit off Assemble the 10 LEL gas cylinder and regulator together Ensure that the gas used for calibration matches the gas that the 3M Macurco 60 6 Combustible Gas Detector is configured to mE Pro or Hy Check the pressure gauge on the regulator If you have 25psi or less you will need to replace the gas canister Place the test Hood from the regulator over the gas sensor To select Calibration Span Mode SPn from normal mode press the Next button four times to get to CAL or Calibration Mode Press the Enter button to get to 000 Calibration Zero Mode then press the Next button to get to Calibration Span Mode 21 7 Press the Enter button and the display will read 10 alternating with the gas mE Pro or Hy blinking indicating the sensor is looking for gas 8 Start applying gas to the gas sensor Note The sensor will look
18. n The fan and alarm relay will be activated for the power up cycle unless the Power Up Test PUt option is OFF The indicator light LED will flash green during the self test cycle At the end of the 1 minute cycle the unit will take its first sample of the air and the light will turn solid green WARNING Do not cover or obstruct visual alarm LED Doing so may adversely affect product performance and result in sickness or death Operation 1 With the display function turned the 3M Macurco GD 6 Combustible Gas Detector will show the current concentration of gas LEL or 0 zero in clean air When the gas concentration reaches the Fan Relay setting 10 LEL for example the display will flash back and forth between FAn and 10 With the display function turned Off the display does not show the gas concentration but will show FAn as long as the fan relay is activated 2 With the display function turned On and the gas concentration reaching the alarm relay setting 20 LEL for example the display will flash back and forth between ALr and 20 The buzzer will sound indicating Alarm if the buzzer is turned On With the display function turned off the display does not show the gas concentration but will show ALr when the Alarm relay is activated 3 With the 4 20mA function turned On the 4 20mA output will correspond to the concentration 0 50 LEL The display will sho
19. nstructions or call in U S A 1 800 243 4630 In Canada call Technical Service at 1 800 267 4414 If you have any doubts about the applicability of the equipment to your job situation consult an Industrial Hygienist or call 3M Macurco Technical Service at 1 800 243 4630 In Canada call 1 800 267 4414 General Information The 3M Macurco GD 6 Combustible Gas Detector helps combustible gas detection and automatic exhaust fan control for automotive maintenance facilities enclosed parking garages warehouses with forklifts etc The GD 6 can be used with 12VDC or 24VDC fire security panels Location A 3M Macurco GD 6 Combustible Gas Detector is usually located in areas where there is potential for gas leaks where there are gas appliances areas through which gas pipes pass where batteries are being stored or charged etc NOT mount the 3M Macurco GD 6 Combustible Gas Detector in a corner DO NOT mount the 3M GD 6 Combustible Gas Detector where the normal ambient temperature is below below 0 F or exceeds 125 F 18 C or above 52 If the target gas is lighter than air natural gas Methane or Hydrogen H mount the 3M Macurco GD 6 Combustible Gas Detector high on a wall about one foot down from the ceiling If the target gas is heavier than air propane LP mount the 3M GD 6 Combustible Gas Detector on a wall or column one foot above the floor Use the s
20. o not cover or obstruct display audible alarm opening or visual alarm cover Ensure sensor inlet is unobstructed and is free of debris General The 3M Macurco GD 6 Combustible Gas Detector can be bump tested or calibrated with a Field Calibration Kit FCK with Methane Propane or Hydrogen gas regulator and test hood available through your local representative or from 3M Macurco Contents of the FCK e 3M Macurco Methane Gas Field Calibration Kit GDM FCK 34L 10 LEL 34L 20 LEL Carry Case Regulator Tubing Calibration Hood e 3M Macurco Propane Gas Field Calibration Kit GDP FCK 34L 10 LEL 34L 20 LEL Carry Case Regulator Tubing Calibration Hood e 3M Macurco Hydrogen Gas Field Calibration Kit GDH FCK 34L 10 LEL 34L 20 LEL Carry Case Regulator Tubing Calibration Hood FCK Information Several detectors can be calibrated with one FCK The only limitation is the amount of gas in the cylinder The 17 liter cylinder with 0 2 LPM Liters Per Minute regulator has approximately 85 minutes of continuous calibration run time Replacement cylinders are available The gas cylinder should be replaced when the pressure gauge on the regulator shows 25psi or less Note For optimum test results it is suggested that the unit be in clean air solid green light on and be in a low ambient air flow 17 Gas Testing Testing the Fan Relay Note The gas concentration to activate the fan relay depends on the
21. relays and provide a 4 20mA 0 50 LEL output The 3M Macurco GD 6 Combustible Gas Detector is low maintenance with a long life 5 years pellistor sensor and optional gas test and calibration kits The 3M Macurco GD 6 Combustible Gas Detector is a low level meter capable of displaying from 0 50 LEL of combustible gas Features ETL Listed to UL 61010 1 The 3M Macurco GD 6 Combustible Gas Detector can be bump tested with the FTK with 10 LEL Methane 10 LEL Propane or 10 LEL Hydrogen gas regulator and calibration hood The 3M Macurco GD 6 Combustible Gas Detector can be field calibrated using 10 LEL Methane 10 LEL Propane or 10 LEL Hydrogen gas regulator and calibration hood The 3M Macurco GD 6 Combustible Gas Detector is a low level meter capable of displaying from 0 50 LEL EX Selectable fan and alarm relay activation e 5A SPDT fan relay controls starters of exhaust fans e 0 5AN 0 or N C alarm relay connects to warning devices or control panels e 4 20mA current loop The 3M Macurco GD 6 Combustible Gas Detector mounts on a standard 4x4 electrical box and becomes cover for the box Supervised system any internal detector problem will cause the fan amp alarm relay to activate Optional calibration kit is available One screw allows access for calibration Specifications Power 3W max from 12 to 24VAC Volts Alternating Current or 12 to 48VDC Volts Direct Current e Current
22. rget gas and provide this information to the DVP 120 over a 4 to 20mA current loop power and signal connections for the transducers are provided from the DVP 120 control panel via unshielded four conductor cable The DVP 120 control panel provides three relays which can be used for ventilation fan control or alarm signaling These relays SPDT Form C are for pilot duty only capable of switching 10 amps loads up to 240VAC NOTE 1 Power connections at the sensor are non polarized Main Fan Power Exhaust Fans NS 3M MACURCO DETECTION AND VENTILATION CONTROL PANEL DVP 120 Relay 1 Panel Power i 120 250VAC 120VAC ALARM STARTER RELAYS 120VAC COILS 120VAC Power e 10 Power Up WARNING Each time the unit is turned on it performs a self test which activates visual alarms If the self test fails or if all the alarms do not activate do not use Failure to do so may adversely affect product performance and result in sickness or death The 3M Macurco GD 6 Combustible Gas Detector cycles through an internal self test cycle for the first minute that it is powered The unit will execute the test cycle any time power is dropped and reapplied i e power failure During the self test cycle the unit will display the firmware version number then count down from 60 to 0 and finally go into normal operatio
23. se User Instructions Sensor Poisons The gas sensor in the detector is designed with extreme sensitivity to the environment As a result the sensing function may be deteriorated if it is exposed to a direct spray from aerosols such as paints silicone vapors etc or to a high density of corrosive gases such as hydrogen sulfide sulfur dioxide for an extended period of time 14 MAINTENANCE The 3M Macurco GD 6 Combustible Gas Detector does not require regular maintenance other than cleaning The unit uses a long life pellistor sensor that has a 5 year life expectancy All maintenance and repair of products manufactured by 3M are to be performed at the appropriate 3M manufacturing facility 3M does not sanction any third party repair facilities WARNING Do not disassemble unit or attempt to repair or modify any component of this instrument This instrument contains no user serviceable parts and substitution of components may impair intrinsic safety which may adversely affect product performance and result in sickness or death CAUTION Avoid the use of harsh cleaning materials abrasives and other organic solvents Such materials may permanently scratch the surfaces and damage the display window labels or instrument housing Cleaning Cleaning of the external surfaces is best carried out using a damp cloth with a mild detergent or soap Vacuum under the cover with soft brush to remove dust or contamination Testing
24. se sickness or death For proper use see supervisor User Instructions or call 3M in U S A 1 800 243 4630 In Canada call Technical Service at 1 800 267 4414 1 Units to be tested must be powered continuously for a minimum of 3 minutes before proceeding 2 For optimum test results the unit should be in clean air and be in a low ambient air flow 3 Check that the 3M Macurco GD 6 Combustible Gas Detector status indicator light is illuminated green continuously If not do not proceed with tests See 3M Macurco GD 6 Combustible Gas Detector Trouble Indicator section in these User Instructions 4 The display option should be set to and reading 0 LEL in clean air 5 Aim the lighter into the sensor grate area under DO NOT PAINT on the front cover and release the gas without igniting the flame for 2 to 3 seconds Macurco GD 6 GAS DETECTOR DO NOT PAINT 20 Zero the Sensor 1 2 3 7 C 1 2 oon Pw Remove the Philips screw on the front of the 3M Macurco GD 6 Combustible Gas Detector Pull the front cover of the unit off To select Calibration Zero Mode 000 from normal mode press the Next button four times to get to CAL or Calibration Mode Then press the Enter button to get to 000 Calibration Zero Mode Press the Enter button and the display will read 0 alternating with 000 blinking indicating zero calibration in progress max 165 sec If t
25. select the Alarm Relay Configuration in normal mode press the Next button twice to get to Con or the Configuration menu Then press the Enter button to enter the Con menu The sixth selection is the Arc or Alarm Relay Configuration Press Next five times to get to Arc then press Enter If the relay is nO normally open press Next to turn it to nC flashing then press Enter to confirm the change solid and press Enter again to return to Arc in the Con menu Press Next until End is displayed then press Enter to return to normal operation Selecting Fan Relay Settings FrS To select the Fan Relay setting in normal mode press the Next button twice to get to Con or the Configuration menu Then press the Enter button to enter the Con menu The seventh selection is the FrS or Fan Relay setting Press Next six times to get to FrS then press Enter If the fan relay is OFF disabled press Next to change it to 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 or 20 LEL flashing then press Enter to confirm the change solid and press Enter again to return to run in the Con menu Press Next until End is displayed then press Enterto return to normal operation Selecting Fan Relay Delay FrD To select the Fan Relay Delay setting in normal mode press the Next button twice to get to Con or the Configuration menu Then press the Enter button to enter the Con menu The eighth
26. selection is the FrD or Fan Relay Delay Press Next seven times to get to FrD then press Enter If the delay is OFF disabled press Next to change it to 1 3 5 or 10 minutes flashing then press Enter to confirm the change solid and press Enter again to return to FrD in the Con menu Press Next until End is displayed then press Enterto return to normal operation 13 Selecting Fan Minimum Run Time Frr To select the Fan Minimum Runtime setting in normal mode press the Next button twice to get to Con or the Configuration menu Then press the Enter button to enter the Con menu The ninth selection is the or Fan Minimum Run Time Press Next eight times to get to then press Enter If the runtime is OFF disabled press Next to change it to 3 5 10 or 15 minutes flashing then press Enter to confirm the change solid and press Enter again to return to run in the Con menu Press Next until End is displayed then press Enter to return to normal operation Selecting 4 20mA Output Option 420 To select the 4 20mA Output Option in normal mode press the Next button twice to get to Con or the Configuration menu Then press the Enter button to enter the Con menu The tenth selection is the 420 or 4 20mA Output Option Press Next nine times to get to 420 then press Enter If the 4 20mA is On press Next to turn it to OFF flashing then press Enter
27. setting 1 2 3 18 Remove the Philips screw on the front of the 3M Macurco GD 6 Combustible Gas Detector Remove the front cover Connect the 10 LEL cylinder of Combustible Gas to the regulator Ensure that the gas used for calibration matches the gas selected in the 3M Macurco GD 6 Combustible Gas Detector configuration Assemble regulator hose and test hood and place the test hood over the gas sensor Check the pressure gauge on the regulator If you have 25psi or less you will need to replace the gas canister Note The time to activate the fan relay depends on the delay setting PRESSURE GAUGE A HBH MENU NEXT 72 ENTER TEST MACURCO GD 6 TEST LEL HOOD 7 Turn on the regulator to start the gas flow and wait with the gas applied continuously With the display function turned On the 3M Macurco GD 6 Combustible Gas Detector will show the current concentration of gas or 0 zero in clean air When the gas concentration reaches the fan relay setting 5 LEL for example the display will flash back and forth between FAn and 5 With the display function turned Off the display does not show the gas concentration but will show FAn as long as the fan relay is activated Note If the Fan relay does not close within 2 minutes consider these possibilities a Gas cylinder is empty check the pressure gauge Replace
28. t cover Observe the LED light on the front of the 3M Macurco GD 6 Combustible Gas Detector If the light is solid green proceed to step 6 If the light is off or flashing Green refer to the General section of this User Instruction Locate the switch labeled ENTER TEST on the left side of the printed circuit board Press the Test switch once The 3M Macurco GD 6 Combustible Gas Detector will step through a cycle test a The display progresses through the Art alarm relay test Frt fan relay test then 42t 4 20mA output test b During the first 5 seconds of the test cycle the alarm relay will be closed so any devices connected to that relay will be tested c The Fan relay will be activated for the next 1 minute of the test so if the fan circuits are wired in the normal manner the fan should run d The 4 20mA output will then ramp up from 4 to 20mA over the next 130 seconds of the test so if the circuit is wired in the normal manner the control panel or building automation system should respond e At the end of the test cycle the light will turn green and be on steady Normal Operation the fan amp alarm relay will be in standby mode and the 4 20mA output will return to 4mA in clean air 8 When testing is completed reassemble the unit or units Manual Operation Test This option gives the user the opportunity to manually initiate an individual test for each relay the analog output and the sensor response to gas
29. the pressure gauge Replace the gas cylinder if 25psi or less b Unit needs to be re calibrated go through recalibration and re test c Detector is in need of servicing return unit to factory for servicing d Detector has Alarm relay set to disable OFF Set Alarm relay to 20 LEL and repeat the test Remove the gas from the sensor after test Proceed to test the 4 20mA output or replace the top cover Testing the 4 20mA current loop Connect the 20 LEL cylinder of Combustible Gas to the regulator Ensure that the gas used for calibration matches the gas selected in the 3M Macurco GD 6 Combustible Gas Detector configuration 1 2 3 4 Check the pressure gauge If there is 25psi or less the cylinder should be replaced Place the test hood from the regulator over the gas sensor Turn on the regulator to start the gas flow The fan relay should activate according to the settings The alarm relay should activate according to the settings 19 5 The 4 20mA output should ramp up from 4 in clean air to 20mA at 50 LEL See 4 20mA diagram in these User Instructions Note If the 4 20mA output does not ramp up within 2 minutes consider these possibilities a Gas cylinder is empty check the pressure gauge Replace the gas cylinder if 25psi or less b Unit needs to be re calibrated go through recalibration and re test c Detector is in need of servicing return unit to factory for servicing d Detector has 4 20mA op
30. tion set to OFF Set 4 20mA option to On and repeat the test 6 Remove the gas from the sensor Re assemble the 3M Macurco GD 6 Combustible Gas Detector make sure the LED is aligned with the hole on the front of the case Quick Gas Test A cigarette lighter can be used to perform a functionality test of the 3M Macurco GD 6 Combustible Gas Detector This test allows installers to do a quick functionality test of the gas sensor 7 Wait for a few seconds The digital display should climb indicating the increased gas concentration at the sensor confirming a pass of the quick test Note If the Display does not change within 10 seconds consider these possibilities a Lighter is empty b Unit needs to be re calibrated go through the Field Calibration Procedure in these User Instructions and re test c Detector is in need of servicing return unit to factory for servicing Wait for the display to return to 0 LEL and configure options to desired settings Field Calibration Procedure ote For optimum calibration results the unit should be in clean air and be in a low ambient air flow WARNING Using a certified gas with a concentration other than the one listed for this instrument and sensor when conducting a calibration or calibration verification test bump test will produce inaccurate readings This means that higher levels of the gas being monitored may be present and could result in overexposure and cau
31. to confirm the change solid and press Enter again to return to 420 in the Con menu Press Next until End is displayed then press Enter to return to normal operation Onboard Diagnostics The 3M Macurco GD 6 Combustible Gas Detector monitors all critical functions of the unit through software diagnostics that continuously test and verify unit operations If a problem is found the unit will switch to a fail safe error mode or trouble condition In this error mode the Fan and Alarm relays will be activated the 4 20mA current loop will go to 24mA and the LED light will Flash Green This is a safety precaution To clear this mode simply turn off power to the unit for a few seconds or press the TEST switch inside the unit This will cause the unit to restart the 1 minute self test cycle The 4 20mA signal can be used for troubleshooting e is most likely a connection problem e 4 20mA is normal gas reading range 0 50 LEL e 24mA indicates a Trouble condition Error Codes e 101 Sensor is missing 102 Temperature compensation failed t04 EEPROM checksum t08 Sensor is shorted e 110 Bad EEPROM e 120 Bad factory calibration e t40 Factory calibration was not done e 180 reading failed If the error mode repeats frequently check for continuous power and proper voltage If power is not the problem and a unit has repeating error conditions it may need to be returned to 3M Macurco for service as noted in the
32. troller and Transducer is a low voltage device with selectable 4 20mA output buzzer and digital display options It is an electronic detection system used to measure the concentration of combustible gas and provide feedback and automatic exhaust fan control to help reduce combustible gas concentrations in parking garages maintenance facilities or other light commercial applications The 3M Macurco GD 6 Combustible Gas Detector is a low level meter capable of displaying from 0 50 LEL Lower Explosive Limit of combustible gas The 3M Macurco GD 6 Combustible Gas Detector is factory calibrated and tested for proper operation but can also be calibrated in the field List of Warnings and Cautions within these User Instructions WARNING Each person using this equipment must read and understand the information in these User Instructions before use Use of this equipment by untrained or unqualified persons or use that is not in accordance with these User Instructions may adversely affect product performance and result in sickness or death Use only for monitoring the gas which the sensor and instrument are designed to monitor Failure to do so may result in exposures to gases not detectable and cause sickness or death For proper use see supervisor or User Instructions or call 3M in U S A 1 800 243 4630 In Canada call Technical Service at 1 800 267 4414 GD 6 may not function effectively below 0 or above 125 F 18 C or above 52 C
33. ure and cause sickness or death For proper use see supervisor User Instructions or call 3M in U S A 1 800 243 4630 In Canada call Technical Service at 1 800 267 4414 e The following steps must be performed when conducting a calibration or calibration verification test Dump test to ensure proper performance of the monitor Failure to do so may adversely affect product performance and result in sickness or death When performing a calibration or calibration verification test bump test only use certified calibration gas at the required concentration level Do not calibrate with expired calibration gas f the instrument cannot be calibrated do not use until the reason can be determined and corrected Do not cover or obstruct display or visual alarm cover Ensure sensor inlet is unobstructed and is free of debris USE INSTRUCTIONS AND LIMITATIONS WARNING Each person using this equipment must read and understand the information in these User Instructions before use Use of this equipment by untrained or unqualified persons or use that is not in accordance with these User Instructions may adversely affect product performance and result in sickness or death Use For The 3M Macurco GD 6 Combustible Gas Detector helps combustible gas detection and automatic exhaust fan control for automotive maintenance facilities enclosed parking garages warehouses with forklifts etc The 3M Macurco GD 6 Combustible Gas D
34. w FAn and ALr and sound as outlined above Default Configuration Factory Settings The default Display setting is Off The default Power Up Test setting is On e The default Buzzer setting is Off The default Alarm Relay setting is activation at 20 LEL The default Fan Relay Delay setting is 3 minutes The default Fan Minimum Runtime setting is OFF The default Fan Relay setting is activation at 1096 LEL The default Alarm Relay Configuration is Normally Open The default 4 20mA Output setting is OFF 11 To change settings remove the Philips screw on the front of the 3M Macurco GD 6 Combustible Gas Detector Pull off the front cover of the unit HHH N MENU NEXT ENTER TEST MACURCO GD 6 Gas Selection To select the Gas Option in normal mode press the Next button once to display the current gas selection mE is Methane Pro is Propane and Hy is Hydrogen Then press the Enter button twice to enter the selection menu The currently selected gas will be shown on the display Press Next to scroll through the available gases selections The selected gas will be flashing press Enter to select the gas and Enter again to confirm the selection To return back to normal mode press Next until End is displayed and press Enter Selecting Default Configuration dEF To select the Default Configuration in normal mode press the Mext button twice to get to Con or the Configuration
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