Macurco GD-12 Manual
Contents
1. 877 367 7891 Rev 08 19 2014 Aerionics 2014 All rights reserved Macurco is a trademark of Aerionics Inc MaCURCO 222. For proper use see supervisor or User Instructions or call Technical Service at 1 877 367 7891 e 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 e 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 e Ifthe instrument cannot be calibrated do not use until the reason can be determined and corrected e not cover or obstruct display or visual alarm cover e Ensure sensor inlets are unobstructed and is free of debris 3 is USE INSTRUCTIONS AND LIMITATIONS Z 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 NOTE Combustible gas detectors will respond to a wide range of hydrocarbons including aerosol sprays cleaning solvents paint thinner and other common household items Be alert to other hydrocarbons near the detector before assuming that the unit is false alarming or is defective Use For T
3. 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 rel lay 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 GD 12 configuration 1 Check the pressure gauge If there is 25 psi oi Place the test hood over the gas sensor Turn 2 3 The Fan relay should activate according to the settings 4 With the display function turned and the display will flash back and forth between ALI With the display function turned off the displa is activated NOTE If the Alarm relay fails to operate within 2 minut Gas cylinder is empty checl less the cylinder should be replaced on the regulator to start the gas flow gas concentration reaching the Alarm Relay setting 20 LEL for example the r and 20 The buzzer will sound indicating Alarm if the buzzer is turned On does not show the gas concentration but will show ALr when the Alarm relay tes consider these possibilities the pressure gauge Replace the gas cylinder if 25 psi or less Detector is in need of servicing return unit to factory for servicing a b Unit needs to be re calibrated go through recalibration and re test d Detector has Alarm relay sel to disable OFF Set Alarm relay to 20 LEL and repeat the te
4. in the SEn menu Push Next until End is displayed then push Enter to get back to normal operation The sensor life will be reset for 1 year NOTE If the sensor is reset and performing within acceptable speci sensor performance Do not disassemble unit or attempt parts and substitution of compon sickness or death CAUTION ications though the sensor is nearing to repair or modify any component o VAN WARNING he detector not replaced it is necessary to test and or calibrate the sensor to assure that it is still he end of its expected life There will be no other indication of this instrument This instrument contains no user serviceable ents may impair intrinsic safety which may adversely affect product performance and result in 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 sensor or instrument housing Cleaning Cleaning of the external surfaces is best carried out using a damp cloth with a mild detergent or soap Use a vacuum cleaner with soft brush to remove dust or contaminat TESTING Service at 1 877 367 7891 ion under the cover Do not blow out the sensor with compressed air WARNING Using a certified gas with a concentration other than the one listed for this detector when conducting a calibration or calibration verification test bump test will produce inaccurate readi
5. is activated 3 With the 4 20 mA function turned On the 4 20 mA output will correspond to the concentration 0 50 LEL The display will show FAn and and sound as outlined above 10 Default Configuration Factory Settings he de he de he de he de he de he de he de he de he de he de he de he de iau iau iau iau iau iau iau iau iau iau iau iau Gas setting is ME methane Power Up Test setting is On Display setting is Off Buzzer setting is Off Alarm Relay Setting is activation at 20 LEL Alarm Relay Configuration is Normally Open Fan Relay Setting is activation at 10 LEL Fan Relay Delay setting is 3 minutes Fan Relay Runtime setting is 0 Fan Relay Latching condition is OFF Trouble Fan Setting condition is OFF 4 20 mA Output setting is On To change settings remove the Philips screw on the front of the GD 12 Pull off the front cover of the unit 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 re
6. 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 if the display setting is On and finally go into normal operation The alarm relay will be activated for 10 seconds and the fan relay for 60 seconds during 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 indicator light will turn solid green Operation 1 With the display function turned On the GD 12 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 With the display function turned off the display does not show the gas concentration but will show ALr when the Alarm relay
7. 1 877 367 7891 Location 60 12 mounting height is dependent upon the target gas If the target gas is lighter than air methane NG or Hydrogen H2 mount the 90 12 high on a wall or column about one foot down from the ceiling in a central area where air movement is generally good If the target gas is heavier than air propane LP mount the GD 12 low a wall or column about one foot above the floor in a central area where air movement is generally good The unit on average can cover about 900 sq ft 84 sq meters The coverage depends on air movement within the room or facility Extra detectors may be needed near any areas where people work or where the air is stagnant Do NOT mount the GD 12 where the normal ambient temperature is below below 0 F or exceeds 125 F below 18 C or above 52 C Z WARNING High voltage terminals 100 240VAC are located within this detector presenting a hazard to service technicians Only qualified technicians should open the detector case and service the internal circuits Ensure power is removed from the detector prior to servicing the unit Failure to do so may result in sickness or death General Wiring Information With the exception of the safety ground all field wiring is completed via modular connectors provided After wiring simply plug the modular connectors into the matching connectors on the back side of the detector Mains Power Connection Mains connections shou
8. 120 240VAC 120 240VAC zz 5 ce A 8 NO om POWER 120VAC gt 1 24V remote alarm MAIN FAN lt Relay POWER ZN starter 120VAC exhaust fans 1 In this configuration the Fan or primary relay is used as a low level alarm relay The Alarm or secondary relay is used as a supervisory relay when used in the normally closed option 2 The GD 12 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 indicating a trouble condition at the panel and the GD 12 display will Flash the error auxiliary functions Alarm Control nel such as dialers Air inlet Typical layout in parking garage P oF NC fre initiating circuit 12 Input Channels veer LG MACURCO DVP 120 DETECTION AND VENTILATION CONTROL PANEL Exhaust Fans x avi STARTER RELAYS 120VAC COILS 120VAC Power Typical connection to the Macurco DVP 120 Detection and Ventilation Control Panel Power Up The GD 12 cycles through an internal self test cycle for the first minute that it is
9. GAS DETECTION e 6 Macurco 60 12 Combustible Gas Detector Controller and Transducer User Instructions Important Keep these User Instructions for reference TABLE OF CONTENTS GENERAL SAFETY INFORMATION Intended Use List of Warnings and Cautions USE INSTRUCTIONS AND LIMITATIONS Use For Do Not Use For General Description Features Specifications INSTALLATION AND OPERATING INSTRUCTIONS Location Connections Installation 4 20 mA Output diagram Rear View Image Gas Valve Control diagram Multiple Device diagram Alternate Alarm Panel diagram DVP 120 Control Panel diagram Power Up Operation Default Factory Settings Display setting Buzzer setting Alarm Relay setting Alarm Relay Configuration Fan Relay setting Fan Relay Delay setting Fan Minimum Runtime setting Fan Relay Latching setting Trouble Fan Setting 4 20mA Output setting On Board Diagnostics Sensor Poisons MAINTENANCE End of Life Signal Sensor Life Reset Cleaning Testing Operation Test Gas Test Quick Gas Test Field Calibration Procedure MACURCO GAS DETECTION PRODUCTS WARRANTY 4 C1 RR gt gt CO CO GENERAL SAFETY INFORMATION Intended Use The Macurco GD 12 is a line voltage dual relay Combustible Gas detector controller and transducer The GD 12 utilizes an internal switching power supply that is capable of using line voltage between 100 and 240VAC and 50 60Hz The GD 12 has sele
10. al operation 12 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 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 Enter to return to normal operation Selecting Fan Relay Run Time 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 Frr 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 Fan Relay Latching Option To select the Fan Relay Latching Option in normal mode push the Next button twice to get to Con or the Configuration menu Then pu
11. an relay latching or not latching default selectable Alarm relay 0 5A 120 V 60 VA Alarm relay actuation selectable N O default or N C Alarm relay settings diS 5 10 15 20 default 25 LEL Current loop 4 20 mA for 0 50 LEL selectable to off or on default Buzzer 85 dBA at 10cm settable to off default or on Digital display 3 digit LED selectable to off default or on Operating Environment 0 F to 125 F 18 C to 52 C 10 to 90 RH Operating altitude Up to 5 000m 16 404 INSTALLATION AND OPERATING INSTRUCTIONS Fan relay actuation selectable at diS disable 3 4 5 6 7 8 9 10 default 11 12 13 14 15 16 17 18 19 20 The following instructions are intended to serve as a guideline for the use of the Macurco GD 12 Combustible Gas Detector It is not to be considered all inclusive nor is it intended to replace the policy and procedures for each facility If you have any doubts about the applicability of the equipment to your situation consult an industrial hygienist or call Technical Service at 1 877 367 7891 5 WARNING This detector helps monitor for the presence and concentration level of a certain specified airborne gas 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 Technical Service at
12. cating that the GD 12 has reached the end of code t200 Sensor expired See Error Codes section The end of ENTER TEST button or by temporarily dropping power to the unit The end of life signal provides the user an opportunity to test and or calibrate the sensor assuring that it is still performing within acce expected 29 day period the GD 12 can no longer be silenced and the sensor mus replaced Sensor Life Reset 2 3 4 Remove the Philips screw on the front of the GD 12 Pull the fron hen press the Enter button to get to rSt Reset Sensor Mode Press the Enter button again to see the sensor reset status displayed If it has not already been reset no will be displayed its typical usable life The end of life signal will cause an error ife signal can be silenced for 48 hours by pressing the ptable parameters though the sensor is nearing the end of its life The silence function will continue to be available for 29 days after the GD 12 initiates the initial end of life signal After this be calibrated and the sensor life reset or the GD 12 detector cover of the unit off reset the sensor life rSt from normal or warm up mode press the Next button five times to get to SEn or Sensor Mode the sensor life has already been reset done don will be Push Next to change it to YES flashing then push Enter to confirm the change solid and push Enter again to return to rSt
13. ctable 4 20 mA 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 louver or valve control to help reduce gas concentrations in parking garages battery rooms or other commercial applications The GD 12 is a versatile easy to use device that allows you to select between methane propane or hydrogen gas detection It provides low level detection of combustible gas in an easy to maintain monitor that is factory calibrated for simple installation The GD 12 is capable of displaying from 0 50 LEL Lower Explosive Limit of Combustible Gas The GD 12 is factory calibrated and 100 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 e Use only for monitoring the gas which the sensor and instrument are designed to monitor Failure to do so may result in exposures gases not detectable and cause sickness or death For proper use see supervisor or User Instructions or call Technical Service at 1 877 367 7891 e This equipment may not f
14. 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 Macurco for service per these User Instructions If the error mode indicates Sensor expired see the Sensor Life Reset section of these 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 silicones such as the common oil and lubricants with silicon compounds used as additives in machinery halogen compounds which are used in fire extinguishers and Freon used in refrigerants organo metallic compounds sulfur compounds chlorine compounds acetylene olefins or high concentrations of combustible gas MAINTENANCE The GD 12 is low maintenance The unit uses a long life pellistor sensor that has a 5 year life expectancy The detector s performance should be tested regularly by using gas as detailed in the Testing and Field Calibration sections All other maintenance and repair of products manufactured by Macurco are to be performed at the appropriate Macurco manufacturing facility Macurco does not sanction any third party repair facilities End of life Signal 14 The GD 12 has a long life non replaceable catalytic bead sensor Five 5 years after the GD 12 is installed the sensor end of life signal wil I be activated indi
15. es into the header properly Alarm Relay Connection The external alarm connections A and B are available at the Alarm modular connector There is no polarity for these connections To install the wiring for the alarm contacts disconnect the connector from the header on the detector Strip the insulation of each wire back approximately 1 4 in 6 5 mm insert the bare wire into the terminal and tighten the screw clamp Ensure that the wire cannot easily be pulled from the connector When the wires are connected seat the modular connector into the header ensuring that the latch engages 4 20mA Signal Connection The positive and negative 4 20mA signal connections and are available at the 4 20mA modular connector a 2 position connector To install the wiring for the 4 20 mA contacts disconnect the connector from the header on the detector Strip the insulation of each wire back approximately 1 4 in 6 5 mm insert the bare wire into the terminal and tighten the screw clamp Ensure that the wire cannot easily be pulled from the connector When the wires are connected seat the modular connector into the header ensuring that the latch engages NOTE The 4 20mA current loop outputs may be used with the Macurco DVP 120 control panel or other systems The 4 20mA signal connections to detectors should be size AWG18 minimum for short runs Refer to the table for recommended wire gauges Do not bundle detector 4 20mA signal connections with AC power cab
16. es to get to CAL or Calibration Mode Then press the Enter button to get to 000 Calibration Zero Mode then press the Next button to get to SPn Calibration Span Mode 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 Start applying gas to the gas sensor NOTE The sensor will look for the gas for 45 seconds If no gas is applied or detected in that time the display will return to CAL 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 When the calibration is successful the display will flash back and forth between 10 and PAS Remove the gas The display will return to SPn then normal mode The calibration is done 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 25 psi 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 Macurco Technical Assistance at 1 877 367 7891 Disassemble the cylinder and regulator Re assemble the GD 12 make sure the LED is aligned with the hole in the front case See Calibration Flowchart on the
17. gt gt 5 The Fan Relay can be configured for latching or non latching default when activated when the gas concentration exceeds fan relay set point Once latched in power will need to be interrupted or the TEST button pressed to un latch the relay condition 6 The Fan Relay will engage if the fan setting Combustible Gas concentration is exceeded for longer than the Fan Relay Delay time Unless it is configured for latching the fan relay will disengage once both of these conditions have been met Combustible Gas concentration has dropped below fan setting Fan Relay Run time 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 if the Trouble Fan Setting Option is set to ON and will disengage once trouble fault condition is cleared F The Current Loop is 4 mA in clean air and 4 20 mA for 0 50 LEL 50 37 5 l 25 85 12 5 0 4 9 1 19 24 Output in mA GD 12 Rear view with connectors TYPICAL CONNECTION OF GD 12 gt z 3 z 2 9 Panel 2 The Gas Valve mounts outside ig 3 00 Ss of 25 zs eS ES 6 E 3 Gas line to 120VAC Gas Gas aL mE appliances Valve IQ Q Wall TYPICAL COVERAGE 900 SQUARE FEET Typical multiple GD 12 installation SPOT fan RELAY POWER NC
18. he GD 12 provides combustible gas detection and automatic exhaust fan louver or valve control for automotive maintenance facilities enclosed parking garages utility rooms battery rooms warehouses with forklifts and other commercial applications The GD 12 can be used stand alone with the Macurco DVP 120 Detection and Ventilation Control Panel other fire security panels or building automation systems VAN 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 Macurco Technical Service at 1 877 367 7891 Do Not Use For The GD 12 is not intended for use in hazardous locations or industrial applications such as refineries chemical plants etc Do not mount the GD 12 where the normal ambient temperature is below 0 F or exceeds 125 F 18 C or above 52 C The GD 12 mounts on a type 4S electrical box supplied by the contractor Do not install the GD 12 inside another box unless it has good air flow through it WARNING This equipment 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 GD 12 is a line voltage dual relay combustible gas detector and automatic ventilat
19. inside of the housing 21 MACURCO FIXED GAS DETECTION PRODUCTS LIMITED WARRANTY Macurco warrants the GD 12 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 12 provided it is maintained and used in accordance with Macurco instructions and or 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 Macurco 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 Manufactured by Aerionics Inc Sioux Falls SD Email info aerionicsinc com Phone 1
20. ion controller The GD 12 uses a microcomputer controlled electronic system to measure the concentration of combustible gas actuate relays and provide a 4 20 mA output The GD 12 has a low maintenance long life 5 years pellistor sensor and optional gas test and calibration kits The GD 12 is a low level meter capable of displaying from 0 50 LEL of combustible gas Features ETL Listed to UL 61010 1 and CAN CSA C22 2 No 61010 1 Low level meter capable of displaying from 0 50 LEL Selectable target gas Methane NG Propane LP or Hydrogen H2 Selectable fan and alarm relay activation 5 A SPDT fan relay controls starters of exhaust fans 0 5 A N O or N C alarm relay connects to warning devices or control panels 4 20 mA current loop GD 12 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 Calibration kit is available One screw allows access for calibration or gas test Specifications Power 100 240VAC 50 TO 60 HZ Current 1 0 A MAX Shipping Weight 1 pound 0 45 kg Size 4 1 2 x 4 x 23 4 in 11 4 X 11 4 X 7 0 cm Color Dark gray Connections plugs terminals Mounting box not included 4x4 electric Fan relay 5 A 240 VAC pilot duty SPDT latching or non latching LEL Fan Delay Settings of 0 1 3 default 5 and 10 minutes Fan Minimum Run Time settings are 0 default 3 5 10 or 15 minutes F
21. ld be done in accordance with National and Local Electrical Codes Only qualified personnel should connect Mains power to any device Macurco recommends a minimum wire size of AWG18 and the wire insulator must be rated for 140 F 60 C service The modular connector will accept wire from 12 to 24 AWG The safety ground wire should be secured to the ground screw of the metal electrical box Tighten the screw and make sure the wire is snug Ensure that the wire cannot be pulled out from under the screw The Line L and Neutral N wires should be stripped 1 4 in 6 5 mm insert the wire into the L and N wire positions of the modular Fan Power connector and tighten the screw clamp Ensure that the wire cannot be easily pulled from the connector Plug the modular connection into the Fan Power connection and ensure that it latches into the header properly Fan Relay Connection All of the SPDT Fan relay terminals are available at the Fan Power modular connector Each Fan relay terminal normally open common and normally closed NO COM and NC can accommodate a wire size 12 to 24 AWG To install the wiring for the relays disconnect the connector from the header Strip the insulation of each wire back approximately 1 4 in 6 5 mm insert the bare wire into the terminal and tighten the screw clamp Ensure that the wire cannot easily be pulled from the connector Plug the modular connection into the Fan Power connection and ensure that it latch
22. les to prevent electrical interference If AC power connections must be bundled with the detector 4 20mA signal cables the signal connections should be made with twisted pair of the appropriate gauge with an overall foil and braid shield All shields should be terminated at the DVP 120 end of the cable only A ground stud is provided near the bottom left corner of the DVP 120 panel Installation T The GD 12 mounts on a 4 square or 4x4 electrical box supplied by the contractor Do not mount the CM 6 inside another box unless it has good air flow through it There are two terminals for the dry alarm relay contacts again with no polarity preference The alarm relay can switch up to 0 5 A 120 V or 60 VA The alarm relay is activated if gas reaches or exceeds the alarm settings See OPERATION section of these User Instructions for details on relay settings 3 The alarm relay can be configured to normally open default N O or normally closed N C and will activate if the gas concentration exceeds alarm set point 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 he 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 0 A up to 240 VAC See OPERATION section of these User Instructions for details on relay settings 2
23. lips screw on the fron To select Calibration Zero Mode 000 of the GD 12 Pull the front cover of the unit off 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 the 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 1 877 367 7891 To return to Normal Mode press Enter and then press Next until End is displayed Press Enter to return to Normal Mode 20 Calibration 1 2 3 4 5 10 11 12 13 14 15 Remove the Philips screw on the front of the GD 12 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 GD 12 is configured to mE Pro or Hy Check the pressure gauge on the regulator If you have 25 psi 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 tim
24. ngs 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 Technical 15 General All GD 12 units are factory calibrated and 100 tested for proper operation During normal operation the green status indicator LED light will be on steady the fan amp alarm relay will be in standby mode and the 4 20 mA output will be at 4mA in clean air The unit also performs a regular automatic self test during normal operation If the unit detects an improper voltage or inoperable component it will default into Error mode In this error mode the Alarm relay will be activated the 4 20 mA current loop will go to 24 mA the unit will display the error code the green status indicator LED light will flash and the buzzer will chirp intermittently The Fan relay will also engage if the Trouble Fan Setting Option is set to ON Operation Test Check that the green GD 12 status indicator LED light is illuminated continuously If not do not proceed with the tests If the unit is in error mode contact your local representative or Macurco technical service representative for information on resolving the problem 1 Remove the single screw in the middle of the front cover of the GD 12 2 Remove the front cover 3 Observe the LED light on the front of the GD 12 4 If the light is solid green proceed to step 6 5 If
25. nter 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 GD 12 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 Alarm relay will be activated the 4 20 mA current loop will go to 24 mA the unit will display the error code the green status indicator LED light will flash and the buzzer will chirp intermittently The Fan relay will also engage if the Trouble Fan Setting Option is set to ON This is a safety 13 precaution To clear this mode simply turn off power to the unit for a few seconds or push the ENTER TEST switch inside the unit This will cause the unit to restart the 1 minute self test cycle The 4 20 mA signal can be used for troubleshooting 0 mA is most likely a connection problem 4 20 mA is normal gas reading range 0 50 LEL 24 mA indicates a Trouble condition Error Codes 101 Sensor missing t04 EEPROM bad checksum t08 Sensor is shorted t10 Bad EEPROM t20 Bad calibration 140 Factory calibration failure 180 Read ADC failure 1100 Under range 1200 Sensor expired NOTE For trouble codes over 080 the display will alternate between t 1 and t00 for t100 and between t 2 and t00 for t200 If the
26. r 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 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 imes 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 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 Enter to return to norm
27. sh the Enter button to enter the Con menu The tenth selection is the FrL or Fan Relay Latching Option Push Next nine times to get to FrL then Enter If latching is OFF push Next to turn it to ON flashing then push Enter to confirm the change solid and push Enter again to return to FrL in the Con menu Push Next until End is displayed then push Enter to get back to normal operation Selecting Trouble Fan Setting Option tFS To select the Trouble Fan Setting Option in normal mode push the Next button to get to Con or the Configuration menu Then push the Enter button to enter the Con menu The eleventh selection is the 5 or Trouble Fan Setting Option Push Next ten times to get to FS then Enter If Trouble Fan Setting is OFF push Next to turn it to ON flashing then push Enter to confirm the change solid and push Enter again to return to tFS in the Con menu Push Next until End is displayed then push Enter to get back to normal operation Selecting 4 20 mA Output Option 420 To select the 4 20 mA 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 twelfth selection is the 420 or 4 20mA Output Option Push Next eleven times to get to 420 then press Enter If the 4 20 mA is On press Next to turn it to OFF flashing then press Enter to confirm the change solid and press E
28. st 5 Remove the gas from the sensor after test Proceed to test the 4 20 mA output or replace the top cover Testing the 4 20 mA 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 GD 12 configuration Place the test hood from the regulator over th No Instructions Check the pressure gauge If there is 25 psi or less the cylinder should be replaced 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 The 4 20 mA output should ramp up from 4 in clean air to 20 mA at 50 LEL See 4 20 mA diagram in these User 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 25 psi or less 19 b Unit needs to be re calibrated go through recalibration and re test Detector is in need servicing return unit to factory for servicing d Detector has 4 20 mA option set to OFF Set 4 20 mA option to On and repeat the test Remove the gas from the sensor Re assemble the GD 12 make sure the LED is aligned with the hole on the front of the case Quick Gas Test A butane cigare test of the gas sensor 1 2 3 FIELD CALIBRATION PROCEDURE NOTE For op
29. the green status indicator LED light is off or flashing refer to the General section above 6 Locate the switch labeled ENTER TEST on the left side of the printed circuit board Press the Test switch once F The GD 12 will step through a cycle test a The display progresses through the BUZ Buzzer Test Art alarm relay test Frt fan relay test then 42t 4 20 mA output test Make sure that the settings are on or not disabled diS b During the first 10 seconds of the test cycle the display will show BUZ and set off the audible buzzer The alarm relay will be closed so any devices connected to that relay will be tested d 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 e The 4 20mA output will then ramp up from 4 to 16 mA 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 f Atthe 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 20 mA output will return to 4 mA 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 From normal operation mode press the Next b
30. timum calibration results the uni Zero the Sensor 1 2 3 4 m e lighter can be used to perform a functionality test of the GD 12 This test allows installers to do a quick functionality Units to be tested must be powered continuously for a minimum of 3 minutes before proceeding For optimum test results the unit should be in clean air and be in a low ambient air flow Check that the GD 12 status indicator light is illuminated green continuously If not do not proceed with tests See GD 12 Trouble Indicator section in these Use The display option should be set to r Instructions n and reading 0 LEL in clean air With the CM 6 cover on 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 1 second or less 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 a Lighter is empty within 10 seconds consider these possibilities b Unit needs to be re calibrated go through the Field Calibration Procedure in these User Instructions and re test Detector is in need of servicin Wait for the display to return to 0 LEI g return unit to factory for servicing L and configure options to desired settings should be in clean air and be in a low ambient air flow Remove the Phi
31. to Con or the Configuration menu Then press he Enter button to enter the Con menu Then press the Next button twice to get to the third selection ISP or Display setting Press Enter f the display is On press Next to turn it OFF flashing 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 to normal operation Selecting Buzzer Option bUZ o select the Buzzer Configuration in normal mode press the Next button twice to get to Con or the Configuration menu Then press he Enter button to enter the Con menu The fourth selection is the DUZ or Buzzer setting Press Next three times to get to bUZ hen press Enter If the display is On press Next to turn it OFF flashing then press Enter to confirm the change solid and press Enter again to return to bUZ in the Con menu Press Next until End is displayed then press Enter to return to normal operation Selecting Alarm Relay Setting Ars To select the Alarm Relay Setting in normal mode press the Next button twice to get to Con or the Configuration menu Then press he 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 hen press Enter If the display is OFF disabled press Next to change it to 5 10 15 20 or 25 LEL flashing then press Ente
32. turn 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 Next button twice to get to Con or the Configuration 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 is displayed then press Enter to return to normal operation Selecting Power Up Test Option 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 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 in the Con menu Press Next until End is displayed then press Enter to return to normal operation Selecting Display Option dSP o select the Display Configuration in normal mode press the Next button twice to get
33. unction effectively below or above 125 F 18 C or above 52 C Using the detector outside of th lemperature range may adversely affect product performance and result in sickness or death e This detector helps monitor for the presence and concentration level of a certain specified airborne gas 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 Technical Service at 1 877 367 7891 e High voltage terminals 100 240VAC are located within this detector presenting a hazard to service technicians Only qualified echnicians should open the detector case and service the internal circuits Ensure power is removed from the detector prior to servicing the unit Failure to do so may result in sickness or death e 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 detector 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
34. ure sensor inlets are unobstructed and is free of debris General The GD 12 can be bump tested or calibrated with the GD 12 Field Calibration Kit using Methane Propane or Hydrogen gas regulator and test hood available through your local representative or from Macurco Contents of the FCK GDM FCK Two Gas Cylinders 10 LEL Methane gas in air 20 LEL Methane in air Gas regulator with two feet of plastic tubing Humidifier and Gas test hood GDP FCK Two Gas Cylinders 10 LEL Propane gas in air 20 LEL Propane in air Gas regulator with two feet of plastic ubing Humidifier and Gas test hood GDH FCK Two Gas Cylinders 10 LEL Hydrogen gas in air 20 LEL Hydrogen in air Gas regulator with two feet of plastic ubing Humidifier and Gas test hood Calibration Hood FCK Information Several detectors can be calibrated with one FCK The only limitation is the amount of gas in the cylinder and the flow of the regulator The 34 liter cylinder for example with a 0 2LPM regulator has approximately 170 minutes of continuous calibration run time Replacement cylinders are available The gas cylinder should be replaced when the pressure gauge on the regulator shows 25 psi or less NOTE For optimum test results it is suggested that the unit be in clean air green light on and be in a low ambient air flow Gas Testing Testing the Fan Relay NOTE The gas concentration to activate the fan relay depends on the setting 1 Remo
35. utton 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 20 mA 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 16 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 End is displayed then press Enter to return to normal mode Combustible Gas Gas Test VN 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 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 Do not cover or obstruct display or visual alarm cover Ens
36. ve the Philips screw on the front of the GD 12 Remove the front cover 2 Connect the 10 LEL cylinder of Combustible Gas to the regulator Ensure that the gas used for calibration matches the gas selected in the GD 12 configuration 3 Assemble regulator hose and test hood and place the test hood over the gas sensor 4 Check the pressure gauge on the regulator If you have 25 psi or less you will need to replace the gas canister NOTE The time to activate the fan relay depends on the delay setting 5 Turn on the regulator to start the gas flow and wait with the gas applied continuously 6 With the display function turned On the GD 12 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 18 a Gas cylinder is empty check the pressure gauge Replace the gas cylinder if 25 psi 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 7 Remove the gas
Download Pdf Manuals
Related Search