combustible gas leak detector - General Tools And Instruments
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1. CGD900 Manual_FINAL2_091410 Layout 1 oH go 32 Page 1 GENERAL COMBUSTIBLE GAS LEAK DETECTOR CGD900 USER S MANUAL MSHA INTRINSIC SAFETY APPROVED IN METHANE AIR ONLY Please read this manual carefully and thoroughly before using this product _ CGD900 Manual_FINAL2_091410 Layout 1 oH go 32 2 CONTENTS Introduction IR eee ees 3 Key Features 3 What s in the case 4 Safety Instructions 4 Operation Instructions 4 5 Maintenance Troubleshooting and Customer Service 6 Changing the batteries 6 Replacing the sensor 6 Specificallons is xr aw RR REESE EDU 7 Replacement Parts and Supplies 7 Warranty Information 8 Return Policy c itd nesses shee EE ese 9 CGD900 Manual_FINAL2_091410 Layout 1 oH go 32 3 INTRODUCTION Thank you for purchasing General Tools amp Instruments CGD900 Com bustible Gas Leak Detector with MSHA Intrinsically Safe approval Please read this user s manual carefully and thoroughly before using the instrument The CGD900 uses proven heated sensor technology to detect the presence of most combustible gases including methane propane butane acetylene and alcohol and gasoline vapors see p 7 Specifi cations section for a longer list In ad2. New York NY 10013 212 431 6100 Remember to include a copy of your proof of purchase your return address and your phone number and or e mail address The CGD900 Combustible Gas Leak Detector is warranted to be free of defects in materials and workmanship for two years after the date of purchase This includes an industry first two year warranty on the sensor This warranty applies to all repairable instruments that have not been tampered with or damaged through improper use including unautho rized opening of the unit CGD900 Manual_FINAL2_091410 Layout 1 1 32 Page 10 CGD900 Manual_FINAL2_091410 Layout 1 1 32 PM Page 11 CGD900 Manual_FINAL2_091410 Layout 1 oH go 32 PM Page 12 Specialty Tools amp Instruments GENERAL TOOLS amp INSTRUMENTS 80 White Street New York NY 10013 3567 PHONE 212 431 6100 FAX 212 431 6499 TOLL FREE 800 697 8665 e mail sales generaltools com www generaltools com CGD900 User s Manual Specifications subject to change without notice NOTICE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS 2010 GENERAL TOOLS amp INSTRUMENTS 9 10
3. the CDG900 s controls and indicators are on the unit s front panel Familiarize yourself with the nomenclature in the picture below before turning on and operating the unit Before the CGD900 can be put to use it must execute a three step startup sequence 1 TURN ON Press the on off button once to turn on the unit and again to turn it off 2 WARM UP Once the unit has been turned on it automatically begins heating the Cum sensor During warm up the digital leak size LEAK DETECTOR indicator flashes 0 the sensitivity level indi cators illuminate in sequence and the unit beeps slowly and repeatedly The warm up cycle normally takes less than 10 seconds Low battery 3 READY The CGD900 is ready to begin indicator searching for leaks when the display stops flashing 0 the green LED for NORM lights up Sensitvity and the audio beep increases in frequency level LEDs silence the beep push the Mute button again peeled Note It takes a few seconds to restore the buttons sound if the Mute button is pushed quickly and repeatedly Digital leak size indicator Leak Size Power on off button 4 amp CGD900 Manual_FINAL2_091410 Layout 1 1 32 5 USING THE LEAK SIZE INDICATOR AND SENSITIVITY SETTINGS Once the CGD900 has been started up the digital leak size indicator normally remains off the display is blank But once the in
4. dition its unique front panel readout indicates the relative size of a gas leak from 1 to 9 This reading makes it easier to pinpoint the source of a leak and helps you decide whether it is large enough to be worth plugging The read ing which is independent of the unit s sensitivity level rises and falls with the amount of combustible gas sensed at the end of the CGD900 s 17 inch long flexible and obedient probe The maximum value is dis played when the tip of the probe is at the source of the leak The CGD900 is powered by four AA Alkaline non rechargeable batteries KEY FEATURES CE certified to meet European Union requirements MSHA Certified Intrinsically Safe in Methane Air only e Durable stable sensor with industry first two year warranty e Methane sensitivity of lt 5 ppm Calibrates automatically Unique numeric leak size indicator on front panel Three adjustable sensitivity levels Comfortable Sanoprene rubber grip CGD900 Manual_FINAL2_091410 Layout 1 1 32 Page 4 WHAT S IN THE CASE The CGD900 comes fully assembled a padded carrying case along with a leak test vial that enables you to check that the unit is performing properly See page 5 for instructions for performing this test titled Using the Leak Test Vial SAFETY INSTRUCTIONS WARNING Never use a flame to illuminate an area where combustible gases could be present OPERATING INSTRUCTIONS All of
5. e plastic seal cap on the leak test vial after completing this test Replace the leak test vial when its contents no longer appear green CGD900 Manual_FINAL2_091410 Layout 1 oH go 32 Page 6 MAINTENANCE TROUBLESHOOTING AND CUSTOMER SUPPORT CHANGING BATTERIES When the red LED labeled Low Battery is illuminated it s time to replace the unit s four AA Alkaline batteries To replace the batteries first use a Phillips head screwdriver to loosen the screw at the bottom of the CGD900 in a counterclockwise direction Then open the hinged door and remove the old batteries from the two compartments while noting their polarity orientation Insert two fresh batteries in the right compartment end first and then insert two more in the left compartment end first To help you do this correctly there are and marks on the hinged door Be a Polarity Mark sure each mark ends up adjacent to the end of a battery with match ing polarity See figure NOTE If you may not be using the CGD900 for months remove at least one battery to avoid the possibility of battery leakage ruining the unit REPLACING THE SENSOR To replace the CGD900 s sensor which is at SS the end of the probe first unscrew its metal cover counterclockwise Then gently pull out the old sensor which has four leads Finally reeves N Alignment key install the new sensor by aligning the notch lt Sensor sock
6. et tab in the sensor s socket with the raised tab on Flex Probe the socket holder see figure NOTE Do not force the sensor into the socket Mis alignment can damage the sensor pins Insert the new sensor into the socket by pushing it directly in without twisting CGD900 Manual_FINAL2_091410 Layout 1 oH go 32 7 SPECIFICATIONS Sensitivity lt 5 ppm methane Sensor life gt 300 hours Response time Instantaneous Power source 4 AA Alkaline batteries Battery life 20 hours of operation Warm up time lt 10 seconds Probe length 17 in Numeric display type 7 segment LCD Weight 1 5 lbs Warranty 2 years for the instrument and 1 year for the sensor PARTIAL LIST OF DETECTABLE GASES AND VAPORS Methane Propane Ethane Butane Hydrogen Ethylene Ethanol Isobutane NOL Gasoline fumes Acetylene Methyl ether Ammonia Hydrogen sulfide Industrial solvents Benzene Alcohols Acetone Toluene Xylene REPLACEMENT PARTS AND SUPPLIES ltem Imre Part Number SENSON steer REM CGD900 1 Sensorcover CGD900 2 Leak test vial CGD900 3 Carrying CGD900 4 Users manual CGD900 5 CGD900 Manual_FINAL2_091410 Layout 1 oH go 32 Page 8 WARRANTY INFORMATION The CGD900 Combustible Gas Leak Detector from General Tools amp Instruments General is warranted to the original purchaser to be free from defects in materia
7. l and workmanship Subject to certain restric tions General will repair or replace this instrument if after examination it is determined by General to be defective in material or workmanship for a period of two years This warranty does not apply to damages that General determines to be from an attempted repair by non authorized personnel or misuse alterations normal wear and tear or accidental damage The defective unit must be returned to General Tools amp Instruments or a General au thorized service center freight prepaid and insured Acceptance of the exclusive repair and replacement remedies described herein is a condition of the contract for purchase of this product In no event shall General be liable for any incidental special consequential or punitive damages or any cost attorneys fees expenses losses alleged to be as a consequence of any damage due to failure of or defect in any product including but not limited to any claims for loss of profits CGD900 Manual_FINAL2_091410 Layout 1 oH go 32 Page 9 GENERAL S RETURN FOR REPAIR POLICY Every effort has been made to provide you with a reliable product of superior quality However in the event your instrument requires repair please contact our Customer Service to obtain a RGA Return Goods Authorization before forwarding the unit via prepaid freight to the attention of our Service Center at this address General Tools amp Instruments 80 White Street
8. strument de tects a leak a number from 1 to 9 is displayed in the window regard less of the unit s sensitivity setting The number displayed reflects the concentration of combustible gas sensed The maximum value is displayed when the tip of the probe is at the source of the leak Try switching between different sensitivity set tings while moving the probe until the highest number appears When the unit has reached the Ready state the unit automatically defaults to the normal sensitivity level the green LED labeled NORM is illuminated To raise the sensitivity level press the SENS button once this lights the red LED labeled HI To lower the sensitivity level press the SENS button again this lights the yellow LED labeled LO USING THE LEAK TEST VIAL The CGD900 ships with a leak test vial that lets you check whether the instrument is working properly To perform this test Remove the plastic cap from the leak test vial it pops off rather than unscrews e Turn the instrument on and wait for it to heat the sensor the display goes blank and the green LED labeled NORM illuminates Place the tip of the probe close to the small hole in the top of the leak test vial If the unit is working properly the unit s beep rate should increase and the digital leak size indicator should display a number between 4 and 6 If you do not get these readings you should replace the sensor see p 6 NOTE Always remember to replace th
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