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GT-FIRE

PORTABLE GAS DETECTOR

67816

Revision D

37

6.3.2. Hydrophobic Filter

Note: When replacing the hydrophobic filter, you must also replace the dust filter.

Caution: The monitor must be OFF when replacing the hydrophobic

filter. Ensure any dust / dirt falls away from the monitor.

1. Remove and discard the dust filter, as detailed in

Section 6.3.1 Dust Filter.

2. Unscrew the probe adaptor, as illustrated in

Figure 44: Hydrophobic Filter Bulb Removal

.

3. Turn the hydrophobic filter bulb in an anticlockwise direction to release the bayonet connection.

Note: The hydrophobic filter is permanently attached to the hydrophobic filter bulb.

4.  Inspect the hydrophobic filter for contamination or damage.
5.  Fit a new Hydrophobic Filter Bulb (Part No. 67213), if required.
6.  Check the probe washer and replace if damaged (part no. 12379).

Note: Do not overtighten the hydrophobic filter bulb or probe adaptor filter assembly.

7. Switch ON the monitor and check that a ‘FLOW FAULT’ is displayed when the probe inlet is

blocked (while pump is running).

8. If ‘FLOW FAULT’ is not displayed, check tightness of all fittings.

Figure 44: Hydrophobic Filter Bulb Removal

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Содержание Everywhereyoulook GT-FIRE

Страница 1: ...User Manual 67816 Revision D GT FIRE PORTABLE GAS DETECTOR ...

Страница 2: ...es are the property of their respective owners DESCRIPTION This User Guide provides information for use only with the GT Fire Portable Gas Monitor or the monitor LIABILITY Every care has been taken in the preparation of this user guide but the Company does not accept any responsibility for errors or omissions and their consequences Information in this user guide is subject to change without notice...

Страница 3: ...igh levels of H2 S and other sulfur containing compounds phosphates and refrigerant gases Freon may contaminate poison or inhibit the sensor Do not use the monitor in a potentially hazardous atmospheres containing greater than 21 oxygen SPECIAL CONDITIONS OF USE The monitor is designed for use in harsh environments The monitor is sealed to IP54 and if not subjected to misuse or malicious damage wi...

Страница 4: ...ration 1 1 3 Operation 12 3 1 Operation Procedure 12 3 2 Switching the Monitor ON 12 3 3 Monitor Identification 13 3 4 Filter Check Flow Fault Test 13 3 4 1 Filter Check 13 3 4 2 Flow Fault Test 13 3 5 Time and Date 14 3 6 Calibration Due 14 3 7 Service Due 15 3 8 Sensor Zeroing 16 3 8 1 Zero Faults 16 3 9 Warm up Complete 17 3 10 Switch the Monitor OFF 17 4 Modes of Operation 18 4 1 Leak Test Mod...

Страница 5: ...6 5 5 1 Battery Warning 26 5 5 2 Zero Fault 26 5 5 3 Sensor Fault After Warm up 26 5 5 4 Sample Flow Fault 27 5 6 Default Alarm Options 28 6 Operator Maintenance 29 6 1 Replacing Recharging Batteries 29 6 1 1 Replacing Batteries 29 6 1 2 Charging Batteries 31 6 2 Cleaning 35 6 3 Replacing the Filters 36 6 3 1 Dust Filter 36 6 3 2 Hydrophobic Filter 37 6 3 3 Chemical Filter optional accessory 38 6 ...

Страница 6: ...GT FIRE PORTABLE GAS DETECTOR 67816 Revision D 6 9 1 Consumables 46 9 2 Accessories 46 9 3 Spare Parts 47 9 4 Software 47 A Monitor Specifications 48 B Technical Support 49 ...

Страница 7: ...ed by fully trained personnel in a safe area Only 0 to 100 LEL combustible gas detection portion of this instrument has been assessed for performance Only GMI replacement parts should be used If the monitor detects gas follow your own organization s procedures and operational guidelines Any right of claim relating to product liability or consequential damage to any third party against GMI is remov...

Страница 8: ...t be within 0 to 20 of actual Accuracy may be corrected by using the GT Calibration Software and manually applying the gas 1 2 2 Certification and Approvals The monitor has the following approvals Mark UL 913 Class I Div 1 Groups C and D 1 2 3 Batteries Caution Only use approved batteries 1 UL APPROVED MONITORS A Alkaline Any LR14 type B Rechargeable NiMH Any C type 2 ATEX IECEx CSA APPROVED MONIT...

Страница 9: ... be taken in their handling and disposal Remove batteries if the monitor will be stored for longer than 3 months The monitor may contain electrochemical sensors with an expected life of 2 years Under conditions of prolonged storage the sensors should be removed Sensors contains potentially corrosive liquid Handle and dispose with care ...

Страница 10: ...onitor designed to suit the needs of the fire industry Figure 1 GT Fire Portable Gas Detector 2 2 Features PPM and LEL Methane CH4 gas ranges Manual and automatic datalogging Loud audible and high visual ticker Geiger on ppm range Integral flashlight Alkaline or rechargeable battery options Charging via simple power cable or docking station Rugged polycarbonate case ...

Страница 11: ...Caution Avoid exposing to flammable gases other than Methane This can alter the performance of the flammable sensors and generate faults If however the monitor has been exposed to hydrocarbons other than Methane an immediate calibration should be performed before returning the monitor to normal operation 2 4 Modes of Operation Leak Test Used to investigate odour or leak complaints and to pinpoint ...

Страница 12: ...on The monitor is within your calibration period The flow fault and filter check are successful All applicable ranges are operational There are no fault indications Attach optional accessories as required 3 2 Switching the Monitor ON WARNING ALWAYS SWITCH THE MONITOR ON IN FRESH AIR Figure 2 Switching the Monitor On Press and hold the RH button for one second A 30 second warm up routine begins a c...

Страница 13: ... Filter Check Press YES to continue Press NO to enter the Switch OFF sequence 3 4 2 Flow Fault Test When Flow Fault Test screen is displayed as shown in Figure 5 Flow Fault Test there are three options 1 Perform the Flow Fault Test 2 Press SKIP to continue warm up without performing the test 3 Press OFF to initiate the Switch OFF sequence Figure 5 Flow Fault Test To perform a flow fault test 1 Blo...

Страница 14: ...Figure 7 Time and Date 3 6 Calibration Due Calibration of the monitor is important By default CAL DUE date is set to 365 days but can be set to from 1 to 400 days The CAL DUE date is updated when the monitor is successfully calibrated The monitor has five options to alert the user when calibration is due or is overdue 1 Cal Due disabled no date is displayed The monitor does not require a valid cal...

Страница 15: ...ed period the user must still acknowledge that Calibration has expired Press and hold YES button for monitor warm up to continue Press and hold NO button to reject extended period The screen in Figure 10 Switch Off is displayed Figure 10 Switch Off Note If the extended period option has expired the user s only option will be to switch the monitor OFF 3 7 Service Due Service Due date allows essenti...

Страница 16: ...igure 13 Service Due Switch Off Note The service due date will only show at 90 days prior to the preset date 3 8 Sensor Zeroing At the end of warm up each sensor is zeroed as shown in Figure 14 Zero Sensors Figure 14 Zero Sensors 3 8 1 Zero Faults If a Zero Fault is detected the monitor should be restarted in fresh air If the fault persists recalibrate the monitor If that fails return the monitor ...

Страница 17: ...efore switching it OFF To switch off the monitor press and hold both the LH and RH buttons simultaneously for 5 seconds refer to Figure 15 Switch OFF Figure 15 Switch OFF The mode selection menu will display for 2 seconds and then a countdown from 3 to OFF as shown in Figure 16 OFF Sequence will begin Figure 16 OFF Sequence Note In Confined Space Mode to prevent accidental monitor switch OFF while...

Страница 18: ... 100 LEL Methane 0 1000 ppm Carbon Monoxide CO if fitted 4 1 2 Features Leak Test mode features Audible Visual PPM Ticker Geiger alarm Ticker threshold adjustment Audible Visual Gas Alarms Pump ON OFF will stop automatically if flow fault is detected Max Display Methane autoranging ppm and LEL Display Invert Automatic datalogging Backlight Flashlight 4 1 3 Display Figure 17 Methane Only Display No...

Страница 19: ...ge Selection2 Press Toggle between Methane and Methane CO displays Lights Press and Hold 1st press and hold backlight ON 2nd press and hold flashlight ON 3rd press and hold backlight flashlight OFF Backlight flashlight automatically switch OFF after two minutes Pump ON OFF Press Clear Flow Fault Press Available only when monitor has a flow fault alarm Refer to Section 5 Alarms for more details Zer...

Страница 20: ...ker Geiger Threshold Figure 19 Ticker Geiger Threshold 1 Note If the monitor is in alarm the Max function cannot be used until the alarm is acknowledged 2 Note An optional configurable feature enables manual selection between PPM and LEL If this option is enabled and a CO range is present it will not be possible to only view the flammable range 4 1 5 Logging Automatic datalogging is active for the...

Страница 21: ...me weighted averaging TWA alarms for toxic ranges Confidence signal every 15 seconds Display invert Backlight Flashlight 4 2 3 Display Figure 20 Normal Confined Space Display Figure 21 Confined Space Display in alarm 4 2 4 Pump The pump runs continuously for safety reasons If a Flow Fault occurs FLOW FAULT appears on the screen and fault LED will illuminate Refer to Figure 22 Flow Fault Example Fi...

Страница 22: ...ly switch OFF after two minutes Manual Log Press LOG briefly appears on the display to confirm manual log has been stored Clear Flow Fault Press Available only when monitor has a flow fault alarm Refer to Section 5 Alarms for more details Mode Selection2 Press and Hold Release 1s after the mode selection menu appears Use the UP or DOWN buttons to select desired mode Note The Max Min function canno...

Страница 23: ...6 Revision D 23 4 2 7 Confidence Signal Every 15 seconds during normal operation the monitor emits a confidence beep and briefly illuminates the bottom pair of red LEDs This informs the user that the monitor is operational and sampling ...

Страница 24: ...m Exposure Limit STEL and Long Term Exposure Limit LTEL TWA for toxic gas ranges Note A time averaged value is the mean average gas level over a rolling period The STEL is 15 minutes and the LTEL TWA is 8 hours In accordance with legislation this requires the time weighted averages to be averaged over a full period whether the monitor is ON or OFF Such averaging essentially makes the monitor singl...

Страница 25: ...y programmable to be either latching or non latching Latching alarms can only be reset once gas readings have returned to a safe level To reset press and hold the AL ACK button Non Latching alarms will automatically reset when the gas readings have returned to a safe level 5 4 2 Acknowledging User can acknowledge a latching alarm by pressing and holding the AL ACK button This can only be done afte...

Страница 26: ...5 5 2 Zero Fault If the monitor is switched on in gas and has been unable to zero all sensors correctly a ZERO FAULT message is displayed A flashing wrench alternating with a gas value as shown in Figure 27 Zero Fault LEL The audible alarm sounds and the orange fault LED flashes If the user is in a mode where the faulty sensor is used the orange LED is on continuously Figure 27 Zero Fault LEL Retu...

Страница 27: ...Leave monitor ON for 30 to 60 minutes Switch it OFF and ON If the fault persists return the monitor for service 5 5 4 Sample Flow Fault If a sample fault occurs FLOW FAULT alternates with the mode name as shown in Figure 29 Flow Fault CSM Pump switches off except Confined Space mode Pump symbol disappears Fault LED tuns ON Figure 29 Flow Fault CSM Check sample line filter or probe for blockage Cle...

Страница 28: ...d by default CO HIHI Y N High Pitch 8x LED Ramping CO STEL Y N High Pitch 8x LED Ramping CO LTEL TWA Y N High Pitch 8x LED Ramping H2 S Warning Alarm disabled by default H2 S HI Alarm disabled by default H2 S HIHI Y N High Pitch 8x LED Ramping H2 S STEL Y N High Pitch 8x LED Ramping H2 S LTEL TWA Y N High Pitch 8x LED Ramping Low Battery Y N A Low Pitch Fault LED Flashing Zero Fault Y N A Low Pitc...

Страница 29: ...acing Batteries WARNING BATTERIES MUST BE CHANGED ONLY IN A LOCATION KNOWN TO BE NON HAZARDOUS WARNING DO NOT MIX NEW BATTERIES WITH USED BATTERIES OR MIX BATTERIES FROM DIFFERENT MANUFACTURERS WARNING DO NOT MIX ALKALINE AND RECHARGEABLE BATTERIES WARNING TO PREVENT IGNITION OF FLAMMABLE OR COMBUSTIBLE ATMOSPHERES ALWAYS REMOVE BATTERIES BEFORE SERVICING THE MONITOR WARNING TO PREVENT IGNITION OF...

Страница 30: ...cover assembly 3 Remove the cover in direction shown in Figure 31 Battery Cover Removal Figure 31 Battery Cover Removal 4 Remove the three batteries as shown in Figure 32 Battery Removal Figure 32 Battery Removal 5 Replace Batteries note polarity as shown in Figure 32 Battery Removal 6 Check the O ring Figure 33 O Ring Replacement for damage and replace if necessary ...

Страница 31: ...Standard Monitor Charger Part No 67134 Charging Station Part No 67101 used with Universal Power Supply Part No 12444 12V Power Supply Part No 12988 or 24V Reduction Box Part No 67233 A 12V 24V Vehicle Instrument Charger Part No 66206 The rechargeable batteries can also be removed from the monitor and charged in an appropriate commercially available charger During charging the display indicates CHA...

Страница 32: ...e been caused by attempting to charge Alkaline batteries The orange fault LED will also be ON Figure 36 Charging Terminated 6 1 2 1 Standard Monitor Charger Universal Plug To connect Standard Charger to the monitor 1 Lift dust cover from charger socket on rear of monitor Connect charger plug as shown in Figure 37 Connect Charger to Monitor Figure 37 Connect Charger to Monitor 2 Connect charger to ...

Страница 33: ...y while charging Refer to Charging Station Instruction Sheet P N 67252 for more details Figure 38 GT Series Charging Station To insert monitor in charging station 1 Check that monitor charging contacts shown in Figure 39 Monitor Charging Contacts and the station charging contacts shown in Figure 40 Charging Station Monitor Location are clean Figure 39 Monitor Charging Contacts ...

Страница 34: ...ecure monitor into the storage clip and engage securing strap refer to Figure 40 Charging Station Monitor Location Figure 40 Charging Station Monitor Location 5 Secure the probe in the charging station as shown in Figure 38 GT Series Charging Station 6 Connect power supply Universal Power Supply part no 12444 or 12V Vehicle Power Supply part no 12988 to Charging Station as shown in Figure 41 Power...

Страница 35: ...n Figure 42 Vehicle Charger Lead 6 2 Cleaning Caution Do not use agents containing silicon or solvent to clean the monitor as these may damage the flammable gas sensor Do not use abrasive materials or strong volatile chemical solutions as these could damage the impact resistant casing The outer impact resistant casing of the monitor may be cleaned using a non abrasive moist cloth Rub the cloth ove...

Страница 36: ...3 Dust Filter Holder Filter Removal 2 Remove and discard the dust filter Caution Always replace a dirty Dust Filter Never rotate and reuse as this can introduce contaminants into the monitor 3 Insert a new dust filter Part No 67163 in the dust filter holder until fully seated 4 Check the dust filter washer and replace if damaged Part No 67189 5 Reattach the dust filter holder to the adaptor and se...

Страница 37: ...hobic filter bulb in an anticlockwise direction to release the bayonet connection Note The hydrophobic filter is permanently attached to the hydrophobic filter bulb 4 Inspect the hydrophobic filter for contamination or damage 5 Fit a new Hydrophobic Filter Bulb Part No 67213 if required 6 Check the probe washer and replace if damaged part no 12379 Note Do not overtighten the hydrophobic filter bul...

Страница 38: ...sorber part no 67270 The NOx absorber will remove Nitric Oxide NO and Nitrogen Dioxide NO2 from a sample Theabsorberwillchangecolourfromdarkpurpletobrownwhensaturatedandreplacement is required Caution ThecontentsofthisfiltermustonlybereplenishedwithTeledyne GMI approved chemicals Note When replacing the chemical filter you must also replace the dust filter 1 Remove and discard the dust filter as d...

Страница 39: ...t is damaged or contaminated Using the flat end of a pencil push the filter from the sample side as shown in Figure 47 Housing Filter Removal and discard it Insert new filter disc part no 67138 into filter housing until fully seated Figure 47 Housing Filter Removal The housing adaptor filter must also be replaced if damaged or contaminated Using the flat end of a pencil or similar push the filter ...

Страница 40: ...not overtighten the probe adapter or chemical filter 6 3 4 Cotton Filter optional accessory The cotton filter assembly part no 67196 contains a cotton filter to further protect the monitor from the ingress of dust The cotton filter housing can be removed using the same procedure as the chemical filter Refer to Section 6 3 3 Chemical Filter optional accessory and Figure 49 Cotton Filter Removal Fig...

Страница 41: ...n Figure 50 Cotton Filter Removal then remove it Figure 50 Cotton Filter Removal 2 Replace the cotton filter if it is contaminated or damaged part no 10077 3 Check the probe washers and replace if damaged Part no 12379 4 Reattach all parts reverse of removal procedure Note Do not to overtighten the probe adapter or cotton filter housing ...

Страница 42: ...en is shown in Figure 52 CalGas Selection Figure 52 CalGas Selection Note Bump Test mode will only display gas ranges configured in the monitor Multiple gas cylinders may be required to fully bump test the monitor Each gas cylinder used is referenced using a CalGas number For example CalGas1 Methane PPM CalGas2 Combi Cylinder Methane LEL CO H2 S 1 The current CalGas selection number is highlighted...

Страница 43: ... OK button to start the test The screen shown in Figure 55 Applied Gas Peak Values will be displayed Figure 55 Applied Gas Peak Values Left column gas ranges available in the monitor Middle column concentration of gas being applied Right column peak gas reading 4 Apply the gas using a demand flow regulator 5 Wait for the tick symbol to appear next to applied range as shown in Figure 56 Bump Test I...

Страница 44: ... hold the NEXT button to select Once selected the stored bump test reading will be shown as illustrated in Figure 58 Stored Bump Test Readings Figure 58 Stored Bump Test Readings To return to CalGas Display press and hold the OK button 7 3 Bump Test Logging All manual bump tests results will be automatically stored in the monitor s memory when the mode is exited using the EXIT button Up to 32 bump...

Страница 45: ...are This allows the monitor to be linked to a PC and calibrated while applying gas manually See GTCAL Software User Handbook Part no 67244 for further details Note For further information on calibration options please contact Teledyne GMI or an authorized distributor 8 1 Calibration Validity Calibration validity remains the responsibility of the user Individual codes of practice may dictate calibr...

Страница 46: ...7142 67292 Drycell Alkaline batteries pack of 3 67294 Panasonic Rechargeable Batteries pack of 3 9 2 Accessories Part No Description 67108 Carrying Case 12480 35cm 14in Solid End Probe 12393 80cm 32in Solid End Barhole Probe 67185 Stainless Steel Flue Probe 67142 Chemical Filter Assembly 12712 Sample Line Tygon per metre 67095 Wrist Strap 67134 Standard Monitor Charger Universal Plug 66206 12V 24V...

Страница 47: ... Red 12737 O Ring use with 67142 76038 O Ring for Battery Compartment 9 4 Software Part No Description 67238 GTCAL System Package including CD and interface 67164 GT Data Downloading Package including CD and interface For a comprehensive list of probes accessories and calibration gases contact your local distributor or alternatively Teledyne GMI ...

Страница 48: ...1 7lbs 0 78kg Temperature Limits 4 F to 122 F 20 C to 50 C Humidity Limits 0 95 R H non condensing Protection Rating Polycarbonate ABS case protected to IP54 Sampling System Integral pump with pressure sensor for flow fail detection Sample path is protected by dust and hydrophobic filters Power Source Three C size alkaline or rechargeable NiMH cells providing approximately eight hours runtime at 2...

Страница 49: ...le trouble free service Contact your regional technical support if you have technical questions need support or if you need to return a product Details can be found at www teledynegasandflamedetection com Note When returning a product contact Technical Support to obtain a Return Material Authorization RMA number prior to shipping ...

Страница 50: ... 9200 ASIA PACIFIC 750C Chai Chee Road 03 08 Viva Business Park Singapore 469003 Tel 65 84282741 www teledynegasandflamedetection com Copyright 2020 Teledyne Gas and Flame Detection All rights reserved EMEA Inchinnan Business Park Renfrew PA4 9RG Scotland UK Tel 44 0 141 812 321 1 ...

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