USER`S GUIDE - Gemini Scientific Corp.
Contents
1. A WARNING THE AEROSOL FROM THIS INSTRUMENT MAY BE HARMFUL TO THE HEALTH OF THE OPERATOR IF PRECAUTIONS ARE NOT TAKEN The Model 501 B Aerosol Generator Smoke detector Analyzer generates an aerosol consisting of a refined NF Grade white mineral oil in air Aerosol concentration at the discharge point of the hose is adjustable from 0 to 45 mg m 0 to 6 mg min Room air would dilute the discharge quickly The aerosol smoke is odorless and not visible Proper precautions to avoid over exposure such as good ventilation and limited discharge time are recommended Do not hold end of hose close to face during aerosol discharge The maximum allowable limit under OSHA Occupational Safety and Health Administration regulation in an eight hour weighted average for oil based aerosol is 5 mg m The RUDOL White Mineral Oil is approved by the FDA Food and Drug Administration for use on skin and incidental food contact To reach the OSHA allowable limit for example you need to discharge at the maximum concentration rate 6 mg min into a non ventilated 14x12x10 feet room for a period of about 50 minutes However in typical testing very little aerosol is introduced into the room The normal time per test is only about 30 seconds at 1 4 of the maximum concentration far below the OSHA safety limit However precaution is necessary to avoid situations where exposure can reach above the OSHA limit THIS INSTRUMENT SHOULD NOT BE USED IN OR NEAR CONC2. Expected airflow direction ss S Return tube slant cut face 7 oriented downstream inlet tube of airflow holes face upstream of Do not insert airflow rubber plug Air duct Conduit cu Electrical Box L pt san P J nz get cs 30085 e p Detector td Access a panel door 501 Tester Output Flexible Connector Hose 1 1 2 OD a 1 1 2 to 2 1 2 ID iM x Z Flow resuictor 0 56 ID Hole To Tester Output Hose with Restrictor ector Hose EXCESSI wae Detector Use the normal method of generating smoke from the Gemini Tester Do not use the wands and the shroud Insert a restrictor at the end of the hose 0 6 diameter hole Use a connector hose to connect the hose from the tester Any flexible hose with 1 1 2 to 2 1 2 inside diameter can be used as connector Tape the connection with duct tape Insert the hose into the inlet tube of the detector that has been removed from the duct for testing Allow space for excess smoke to flow out Maintain green on the LED The restrictor is available from Gemini Contact Gemini at 408 554 0310 if you have any questions 25 Additional instructions on how to connect the duct detector testing hose Inlet tube duct detector Duct detector testing Restrictor Hose Fitting Hose from your tester hose connector hose 1 Connect the optional duct detector
3. SECTON DOS COMMENTS ints product 15 refined white minera meetin e requirements o u 01 g Nat onal Formulary XVII as well as the requirements of the Food and Drug Administration as per CFR 172 878 If used in applications where a mist may be generated observe a TWA PEL of 5 mg m3 of mineral oil mist OSHA and ACGIH CHEM TREC 14600 424 9300 Tel 212 605 3911 Alexander Coutras mu Manager Regulatory Affairs Jan 9 1990 sparo carta s SIGNATURE REVISION DATE Dec 1 1989 SUPERSEDES We belleve the statements technical information and recommendations contained herein are reliable but they are given without warranty or guarantee of any kind express or Implied and we assume no responsibility for any loss Gamage or expense direct or consequential arising out of their use Page 2012 23 APPENDIX F Pictorial Illustrations Fig A Correct way of filling the Fig B Symptom of clogged nebulizer nebulizer N Fig C Removal of nebulizer Fig D Removal of target piece from housing by twist amp pull the housing motion 24 APPENDIX G Duct Detector Testing Return air inlet 6 10 duct equivalent diameters Typical duct detector more than 3 ft 0 9 m wide Tube support hole only for ducts Y Airlow direction Duct width ___ insert rubber plug this end of inlet tube mer
4. 2 Setthe Function Switch red 1 on the top panel to the BATTERY RECHARGE bottom position 3 Connect the lead from the NiMH charger to the Recharge Input jack on the left side panel Plug the charger into a 110 V AC power source A yellow fast charge light will illuminate on the charger when it is connected While charging the battery and charger may become warm This is a normal condition 7 A green float light will illuminate on the charger when the battery is fully charged and ONLY when it has been charging for 10 consecutive hours Disconnecting and reconnecting the charger will reset the timer inside the charger 8 Ifa battery does not charge properly a Check current at receptacle by plugging in a lamp or other appliance b Check to see if the receptacle is connected to a light switch which turns power off when you turn off the lights c Check to make sure the Function Switch is set at the Battery Recharge position QUO S NOTE Since battery power depletes over time even when it s not used only charge the battery the night before any testing 7 Important Battery Charging Notes Do not operate charger with a damaged cord or plug Have them replaced immediately Do not disassemble charger There are no consumer serviceable parts inside DO NOT use any other battery charger Any other charger may blow the fuse or shorten the battery life if the charging rate exceeds 1 amp ONLY use the NiMH batter
5. turn the pressure adjust knob on the top panel until the green light is on Concentration Adjust Use the concentration adjust valve to adjust the sensitivity reading on your LCD Turning clockwise will lower the sensitivity readout smaller amount of smoke output whereas turning counter clockwise will increase the sensitivity readout larger amount of smoke output Internal Battery External Power Source Switch for newer Models May 2004 or later only on the left panel When set at the INT BAT internal battery position the tester will be powered by the internal NiMH battery When set at the EXT Power position the tester will be powered by an external power source either through the provided AC Adapter 12VDC output or any other 12V DC battery The AC Adapter or an external 12VDC battery must be connected to the AC Adapter Ext Battery jack next to the INT BAT EXT Power switch 5 3 2 8 Blower Hose Wands Diffuser and Shroud Blower The blower provides air to dilute the aerosol from the nebulizer The dilution air adjust knob controls the flow rate of the dilution air See 3 2 7 Hose and wand Insert the plastic end of the 5 ft 1 1 2 inch diameter flexible hose to the output port right side of the analyzer and connect the other end to the wand and the shroud An operator using a single length wand can reach a normal ceiling height of about 8 feet Additional wands may be coupled to reach ceilings as high as 20
6. 0 Replacement Parts 7 1 Table of Parts This section contains information on replacement parts for Model 501 B Aerosol Generator from Gemini Scientific Corp or from the originating manufacturer Table 2 Replacement Parts List Gemini Part Number B0100 12V Ni Metal Hydride Battery B0101 Battery Charger NiMH F0603 B P on Filter with indicator box of F0603 B1 Vacuum Filter each 01501 Rudol Liquid Oil 501 B AC Adaptor for earlier Models Optional AC adaptor for 501 B Table 3 Accessories Parts List Gemini Part Number Description M1080 Tripod A M1081 Tripod Dolly on wheels B Retractable Extension Pole reaches Hi reach Kit up to 30 feet C 7 2 Replacement of Battery Please consult Gemini Scientific Corporation for more information 17 APPENDIX A Calibration of the Gemini 501 B The mass median diameter of the aerosol from the Model 501 Aerosol Generator was determined by using the Anderson Cascade Impactor Based on 4 replicate runs from 3 generators at a concentration of about 20 mg m3 the mean mass median diameter was found to be 0 44 um with a calculated standard deviation of 0 02 um The estimated number median diameter is less than 0 2 um The Model 501 B is based on and uses the same smoke generation apparatus as the original unit The mass concentration of the aerosol was determined by a mass monitor which electro statically deposits the aerosol onto a p
7. feet For a 30 feet application an optional high reach kit is also available It is a retractable pole that allows you to reach up to 30 feet ceiling Wall mounted detectors testing adaptor Connect one end of the adaptor to the wand and the other end to the diffuser and the shroud The adaptor can be bent at any arbitrary angle up to 90 degree This facilitates the testing of wall mounted smoke detectors Shroud The purpose of the shroud the clear plastic bowl is to cover the detector so that the aerosol of known concentration is not affected by room air For good results the edge of the shroud should touch most of the wall surface around the detector However since the test stream is flowing out at a high rate of about 2 1 ft3 min 60 L min room air would not be able to dilute the smoke stream even though the shroud is as much as 1 2 inch away from the wall For some older models of smoke detectors and duct detectors a different size of shroud may be needed Please contact Gemini Scientific for more info Diffuser The diffuser inside the shroud has six holes which limits the flow rate and distribute the smoke evenly to the detector It also serves as a connection between the wands and the shroud Holes on the diffuser may need to be closed or enlarged to attain correct flow rate See 3 2 7 Duct detector testing adaptor This optional testing adaptor allows you to test duct detectors 3 2 9 Temperature To monitor the aerosol temperat
8. on the nebulizer or inlet See page 18 to the nebulizer Do not rotate the fitting after insertion Turn on the Compressor switch and adjust the pressure indicator to green using the pressure adjust knob If necessary re adjust pressure during testing to keep the pressure LED at green The oil in the reservoir will become cloudy due to emulsification after the pressure is applied Testing is ready only after all the liquid above the suction tube in the reservoir is emulsified in about 45 seconds Concentration Adjust Use the concentration adjust valve to select the initial test value Reading The LCD on top of the panel displays the readings for photoelectric Photo and ionization lon for smoke detectors The current temperature of the oil is also displayed at the lower left corner The elapsed time is shown at the lower right corner 4 2 Oil Temperature Oil temperature in the reservoir would affect the aerosol output The sensitivity reading on the LCD is corrected for the temperature variation If you are working at an ambient temperature below 70 F on a consistent basis the temperature may be too low to generate enough smoke A blow dryer may be used to warm the oil or tester in a cold environment Apply heat evenly Temperature above 90 F in a hot summer day during testing is perfectly normal The reading on your LCD is adjusted accordingly 4 3 Test Completion After each test set the Compressor Switch to the OFF
9. position and allow the blower to remain on for at least 20 seconds to flush the line and the detector with fresh air Turn the whole system off when it s not in actual use to conserve battery power Concentration adjust settings need not be changed if you want to retain similar setting for the next test If you remove the nebulizer from the manifold be sure to cap the opening of the nebulizer with the orange cap DO NOT put the instrument in storage with the nebulizer and drain reservoir attached See 4 1 Nebulizer and Oil Filling 4 4 Storage of Instrument If the Analyzer is not being used for more than 1 2 weeks its nebulizer and drain reservoir should be removed emptied capped and stored in a dust free bag The manifold should also be cleaned and with its opening capped The instrument itself should be covered and stored in an upright position inside or outside the carrying case to avoid oil leakage into the unit Z N WARNING Failure to empty the oil in the nebulizer and drain reservoir before storage may result in oil back draining into the system which may subsequently damage the tester 10 5 0 Inspection Protocol and Test Procedures 5 1 General Objective The Gemini 501 B Analyzer was designed to perform on site inspections of installed smoke detectors to determine their sensitivities Sensitivity is defined as the amount concentration in mg m or obscuration in lft of smoke needed to trigger the alarm of the detector under
10. remove the nebulizer tilt the instrument forward slightly for a few seconds to allow the oil at the tip to drain back into the nebulizer housing This action will minimize any spillage when the nebulizer is pulled out To avoid contamination use a lint free towel to wipe off residual oil in the manifold After removing the nebulizer from the manifold be sure to cover the opening of the nebulizer with the orange colored cap provided to avoid contamination from room dust Dust or lint from the inlet can easily get into the opening and contaminate the oil in subsequent use The contaminant would cause blockage of the small hole inside the nebulizer and may cause unnecessary repair The appearance of large bubbles coming out from the bottom of the dip tube is a symptom of clotting See Appendix F Figure B p23 and Appendix B for repair and cleaning instructions Drain Reservoir The drain reservoir should be attached to the outlet tube tightly behind the nebulizer before any operation Empty the reservoir before it becomes 3 4 full or before storage Dilution Air Adjustment Connect one end of the hose to the Tester and the other end to the wands Then connect the wand with end fitting to the shroud Turn on the blower and use the dilution adjust knob to adjust the LED to green Slight adjustment may be necessary to keep the dilution LED at green during the test Pressure Adjust Connect the pressure line with the Luer fitting Pg 4 figure 1 8
11. 5 ft and for an ionization type is about 1 5 0 5 ft If a nominal sensitivity is given without a range then according to NFPA 72 7 3 2 1 1996 a detector will pass if it alarms between 0 5 and 4 0 ft obscuration See UL 268 Standards 31 1 January 4 1999 ed All the detectors of a given model may not necessarily fall within the extreme values provided by the manufacturer Consult the manufacturer if necessary Because of the built in uncertainty of 0 4 ft in relating field test results from the Gemini 501 B to that of the UL smoke chamber detectors with results 0 4 ft beyond the given range may be considered acceptable As an extreme example results as high as 2 4 ft may be considered acceptable if the listed sensitivity is 1 5 0 5 ft 5 4 Test Procedures For duct detectors please refer to APPENDIX G Start the test with the nominal sensitivity value given by the manufacturer Depending on the test result you can stop or do additional test using either the upper or lower limit of the sensitivity range For example if the specified sensitivity is 1 5 0 5 ft your first test would be 1 5 ft and your second could be 1 0 ft 1 5 0 5 2 0 ft 1 5 0 5 or no test depending on the result from the first test The third test if needed could be 0 6 1 5 0 5 0 4 or 2 4 1 5 0 5 0 4 ft Start testing after the initial warm up period and total emulsification of the liquid in the reservoir The pressur
12. Battery jack that can be connected to the provided AC Adapter 12VDC output or any 12VDC battery l Internal Battery operation 1 For May 2004 or later Models only The Power Source switch on the left panel must be set at INT BAT position 2 With the internal battery connected set the Function Switch 1 at the On position 3 Adjust the dilution LED indicator to 6 green position OK using the dilution adjust knob 11 4 Setthe Compressor Switch 2 at the ON position to turn on the compressor 5 Under normal conditions the battery should supply several hours of operation The battery should be recharged when it fails to maintain its proper function It is recommended that the battery should be charged the night before any testing To conserve battery turn off either the compressor or the whole system at the end of each test 6 DO NOT CONTINUE to use the analyzer when the battery is depleted INT BAT AC Adapter a Ext Battery d EXT Power em External Power operation For May 2004 or later Models only 1 Connect the provided AC Adapter 12VDC output or any 12VDC battery to the AC Adapter Ext Battery jack located on the left panel 2 Setthe Power Source switch to the EXT Power position 3 Setthe Function Switch 1 at the On position 4 Repeat procedures 4 5 above Internal NiMH Battery Charging 1 For May 2004 or later Models Set the Power Source switch to INT BAT position
13. ENTRATED OXYGEN ENVIRONMENTS SUCH AS OXYGEN TENTS OR OPERATING ROOMS IN A HOSPITAL THIS EQUIPHENT OPERATES AT VOLTAGE LEVELS THAT CAN BE HAZARDOUS TO OPERATING PERSONNEL The Model 501 B Aerosol Generator Analyzer for Smoke Detectors operates on a rechargeable 12V Ni Metal Hydride battery This voltage appears at the serial number label and various other points on the chassis The power of the instrument should be completely turned off before opening the front panel for filter change or repair Only qualified personnel who are familiar with the location of the voltage and the hazards involved may open the cabinet with power circuit energized When connecting a new battery make sure to observe correct polarity Connect the red positive line to the red positive battery terminal and connect the black negative line to the black negative battery terminal 1 0 Introduction The Gemini 501 B Smoke Detector Analyzer Aerosol Generator is an instrument ideally suited to measure the sensitivity response of installed smoke detectors The Generator produces an aerosol with particles size characteristics resembling fire smoke The range of concentration between 0 and 45 mg m or from 0 to 4 ft obscuration UL 268 is sufficient to trigger the alarm thresholds of all UL approved ionization and photoelectric smoke detectors The calibration reading for each instrument represents both the UL 268 obscuration standard in ft and to aeros
14. RIAL SAFETY DATA SHEET PRODUCT Rudo White Mineral 011 FOR GEMINI 501 DETECTOR TESTER YSECTIONTE rr__ __ _ _ _ __ _ __ _ amp 6k WITCO MANUFACTURING DIVISION OA SUBSIOLARY Sonneborn Division DORESS INUMBER STREET CITY STATE 2 CODE P 0 3 P 0 Box dida Petrolia PA 16050 Greina Re 90054 CHEMICAL NAME OR FAM FORMULA mix o 1quid hydro 3 White Mineral 011 NF e carboni refined from petroleum cer FORM Vi H n Upon combustion C05 and CO are generated n scous liquid OQQA Keep away from flane heat 150 F max and strong Soi oxidizing agents Colorless liquid d Emu marum EMERGENCY TELEPHON U MA FA 6 728 CHEM TREC 148901 424 3300 BORING PT SECTIONTIGEEREIREAND EXPLOSION DATA TT 230 SPECIAL FRE FIGHTING PROCEDURES os ree IBP _ gt 450 4 Self contained breathing apparatus fs recommended for firefighters Water Dass RATE spray must be used with caution to NDA prevent dien of flames a7 Lowen___urren i T EXTINGUISHING AGENTS IN WATER Q O YCHEMICAL ICO AT 25 c Negl gible X WATERSPRAY DD FOAM In RWATERFOG XSANDILARTH Lo avwrw Nil 25 C Nil e 25 C 25 C s OR PRESSURE va men Hg at 20 C AV HA a PEAMISSIBLE CONCENTRATIONS LAIRI See Section IX COMMENTS RE n EFFECTS OF OVEREXPOSURE amp NDA JUN 2 8 1390 TOXICOLOGICAL PROPERTIE
15. S MCENTRAL S S STRONG ACIO _ STRONG BASE si eres Flush with water If irritation exists consult a physician 33 sxicoNTACT NA lt 1000 1000R 5 X ver US AT Fooss CAS 8042 47 5 NA s wswattoweo Call a physician NA NOT APPLICABLE NOA NO DATA AVAILABLE lt LESS THAN e MORE THAN Page 10 2 TA n Pop a ER RR FORM NO 861 4 83 VA for asm 22 Witco MATERIAL SAFETY DATA SHEET propver__ Rudol SECTIONTVTT SPECIXCPROTECTIONTNFORMATION VENTRATION TYPE REQUIRED ILOCAL MECHANICAL SPEC PROTECTIVE GLOVES 54 None EYE FAOTECTION El Chemical splash goggles OTHER PROTECTIVE EOUP MENT cl None Shut off leak dike up spills absorb with inert material such as sand earth or vermiculite Sweep up and dispose of n accordance with Federal State and local regulations RESPIRATORY PROTECTION SPECK Y TYPE WASTEDSPOSAL Use methods consistent with Federal State and local regulations PRECAUTIONS TO BE TAKEN iN HANDLING ANO STORAGE Avoid heat 150 F max flame and oxidizing agents SECHION VIE TRANSPORTATION DATA U S D O T PROPER SHIPPING NAME UNREGULATEO i by 0 0 7 fan NA 7S 0 0 1 KAZAR HUMBER PRE U S 0 0 1 HAZARD CLASS CRT sl bY 0 0 7 a NA oO NA a FRANS TORTANG TABELISI REQUAAEO EMERGENCY 30 m NA INFORMATIOH FREIGHT CLASSBICATION sa Petroleum 01 NOIBN SPECIAL TRANSPORTATION NOTES D NA
16. SMOKE DETECTORS SENSITIVITY ANALYZER Model 01 B USER S GUIDE Gi GEMINI SCIENTIFIC CORP 1122 B ASTER AVENUE SUNNYVALE CA 94086 Phone 408 554 0310 Fax 408 554 7143 E mail Gemini geminiscientific com Web __http www geminiscientific com Version 3 May 2004 ANALYZER FOR SMOKE DETECTORS Model 501 B Aerosol Generator USER S GUIDE Serial No Date Calibrated Inspected by Sold To GEMINI SCIENTIFIC CORP 1122 B ASTER AVENUE SUNNYVALE CA 94086 For technical assistance please dial 800 582 8882 Version 3 May 2004 Table Of Contents Watrrality cits Scho eee eh ades odes pic illa ca arie e EE ehh rede SDN UIN aoe Sie Iole e aim 1 Warmingiss ee a 1 NO INTTOGUCHIoni D 2 210 Specifications o shed tetto ate ata nt Rated D ae a ta ita eae 2 3 0 Principles of OperatlOn Luana eni PALIN an 3 EE e 3 3 2 Main Elements of the Instrument sssssseeeeee em een 3 3 2 1 Compressor and Vacuum Pumps en eene 3 3 2 2 Nebulizer and Oil Reservoir eene em ener 3 SAM Cas 5 3 24 Impactor eee ettet eid este Alechin ER qued ipe ean Ret 5 3 2 5 Drairi Reservoir oi Lee eed e Une tede Loeb ee denies 5 S226 Filters arci ure ME MEER ERU EI POI ER eS 5 3 2 7 Controls Switches Dilution Adjust P
17. be replaced when the filter element turns red which is after about 100 150 tests 3 2 7 Controls Function Switch ON OFF Battery recharge The switch should be set at the OFF position during storage or between tests When the switch is set at the ON position the blower will be turned on and the system will be ready To charge the internal battery connect the NiMH charger provided and turn the switch to the Battery recharge position Compressor Pump Switch ON OFF When the system is ready Function Switch set at the ON position set the Compressor Switch at the ON position will turn on the compressor Concentration of the aerosol can then be adjusted using the Concentration Adjust knob Dilution Adjust The dilution LED lights Red Green Yellow indicates the dilution airflow rate The correct rate is shown by the green light Red and yellow mean high and low respectively To maintain the correct airflow rate adjust the dilution knob on the right of the top panel until the green light is on If normal adjustment is not enough one or a few of the 6 openings in the diffuser located inside the shroud the clear plastic bowl may have to be enlarged or covered See Table 1 Problem Diagnostics P 15 Pressure Adjust The pressure LED lights Red Green Yellow indicates the compressed air pressure The correct rate is shown by the green light Red and yellow mean high and low respectively To maintain the correct pressure
18. constant pressure from the compressor The vacuum line provides suction to vary the aerosol concentration of the test stream by diverting part of the aerosol from the generator The amount of diversion is controlled by an adjustable valve and measured by a flow meter 3 2 Main Elements of the Instrument Figure 1 shows the locations of some of the elements pages4 3 2 1 Compressor Vacuum Pump The compressor line generates the air pressure necessary to operate the nebulizer The vacuum line removes a specified quantity of aerosol using a control valve that varies the final concentration of the aerosol in the test stream This flow is monitored by a flow meter 3 2 2 Nebulizer and Nebulizer Reservoir Figure 1 9 The nebulizer produces the aerosol from the Rudol liquid using the pressurized air Calibration of each instrument is based on the particular nebulizer supplied Therefore nebulizer is not interchangeable with other testers with different serial numbers N WARNING Oil for the nebulizer is stored in the 30 ml transparent acrylic nebulizer reservoir Before storage oil has to be emptied from the nebulizer reservoir to prevent oil from flowing back into the system which may damage the electronic components of the tester Figure 1 Front View of Model 501 B Function Switch On Off Battery Recharge Compressor Pump Switch On Off Concentration Adjust Knob Pressure Adjust Knob Pressure LED Indicator Dilution LED In
19. d then be established We suggest that the average of several replicate runs be taken All readings for a single detector should be within 5 mm one tic mark space 5 mm while the difference between the two detectors may be large Calibration check using the working standards may be performed after the instrument has tested over a few hundred detectors The frequency for check should be guided by your own test experience Three main causes for shift in calibration are 1 Clogging of the small orifices holes in the nebulizer or impactor 2 Vacuum filter overload 3 Not using Rudol Liquid See Table 1 Problem Diagnostics on page 15 to remedy these situations 15 6 3 Routine Maintenance The only periodic maintenance for the instrument is to change the vacuum line filter element when the color of the filter element turns red During a test oil in the reservoir is oxidized continuously and would contaminate fresh oil added to it The process would eventually affect the test results We recommend that after about 5 6 oil additions to the nebulizer reservoir the entire content should be discarded Oil from the drain reservoir SHOULD NOT be reused to avoid clogging 6 4 Problem Diagnostics Table 1 lists common problems and possible causes and remedies during the operation Table 1 Problem Diagnostics Symptom Possible Causes Low aerosol generation and Clogged impactor Clean Nebulizer See Figure 5 D p23 and Appendix or lar
20. dicator Timer Reset Button Pressure Line Jet Nebulizer Reservoir Drain Reservoir Dilution Adjust Knob Filter Element OMONOAARWN gt 23 4 NESS 3 2 3 Manifold The manifold is a central flow switching chamber which connects the nebulizer impactor vacuum line drain outlet and drain reservoir It is from this chamber that adjustable portions of the aerosol are discarded through the drain and vacuum system while the remainder goes to the final test stream 3 2 4 Impactor The impactor located inside the manifold consists of a metal disc with 3 small holes The function of the impactor is to select the aerosol particulate with proper size distributions smoke sized particles Do not modify enlarge or close any holes on the impactor 3 2 5 Drain Reservoir Figure 1 10 In order to control the concentration of aerosol in the test stream varying amounts of aerosol from the nebulizer are pulled by the vacuum into the filter or by gravity into the drain reservoir The drain reservoir should be attached to the drain outlet before any testing In order for the system to work the drain reservoir should not contain any leakage The drain reservoir should be emptied when it is about 3 4 full or before storage 3 2 6 Filters The disposable filter blue on the front panel absorbs all of the excess smoke from the vacuum stream before it enters the vacuum pump It protects the mass monitor and the vacuum pump The filter SHOULD
21. e Detector Test Report SMOKE DETECTOR TEST REPORT Annual Inspection amp Function Test Bi Annual Sensitivity Test Instrument used Gemini 501 B S N Other Property Name Property Address Property Contact Person Building Detector ID Serial Brand Type si Location Number Number Model P I SII Location Room Zone Signature 20 APPENDIX D Replacement of Vacuum Filter DIRON oo N 9 Replace vacuum filter when the color on the filter element turns red Open the front panel by loosening the thumbscrews Loosen filter strap Locate elbow connectors with orange fittings on both ends of the vacuum filter Push in orange fitting towards the elbow Detach vacuum filter from elbows by pulling the black tubes on the vacuum filter away from the elbows while keeping orange fitting pushed in Replace with a new vacuum filter Observe correct orientation Insert black tube from the vacuum filter completely into the elbow Repeat the procedure on both ends of the filter Pull orange fitting out towards filter to hold filter in place 10 Check and make sure that all tubing fit tightly in the elbows 11 Refasten strap Z WARNING Make sure that the vacuum filter capsule is installed correctly If the filter capsule is installed in the reverse direction damages to the tester may result 21 APPENDIX E Material Safety Data Sheet RUDOL OIL YYitco MATE
22. e LED at green 15 psig dilution air LED at green 60 L min and aerosol temperature at 75 F Estimated uncertainty based on our study relating detectors sensitivity test results between the UL 268 Smoke box and the Gemini 501 B Tester is 0 4 ft both operator and measurement errors 5 6 Operational Precautions 1 Attach drain reservoir to drain outlet before any operation 2 Empty the drain reservoir periodically 3 Do not reuse oil from the drain reservoir 4 Do not store Rudol Oil at temperature above 85 F for long period 5 Change vacuum filter when the color turns red 6 Cover nebulizer opening with orange cap when it is not in use to prevent dust from getting in through the inlet opening see page 18 7 Remove nebulizer and drain reservoir before storage 8 Only Rudol Liquid which has a consistent viscosity and physical properties can be used Other mineral oil may not trigger alarms Rudol Oil left in a truck or car in hot summer days should be discarded because it would affect test result due to viscosity change from polymerization at high temperature To prolong shelf life store the unused oil in refrigerator or cold room 14 6 0 Servicing 6 1 General The servicing section discusses the procedure for internal calibration check routine maintenance information problem diagnostics causes and remedies 6 2 Calibration and Working Standards Though the instrument has been ca
23. e and dilution air LEDs should stay at green Place the shroud over the test detector Adjust the flow meter reading to the desired level shown by the appropriate scale Reset or note the timer as you begin If the detector alarms within 30 to 40 seconds hold the shroud in place while you reduce the concentration to zero Immediately turn the compressor switch off Wait an additional 5 10 seconds before removing the shroud and shutting off the blower If the detector does not alarm in less than 30 to 50 seconds increase the concentration to the next higher value with the shroud still in place Wait 30 to 50 more seconds for it to alarm If the test detector alarms and you want to continue the test at a lower setting you must reset the alarm Before testing at a lower value allow at least 20 seconds to flush out the old smoke with the shroud in place and compressor off 12 Figure 2 is an example of the test decision tree and statements you can make based on the test results It is based on a detector with the stated sensitivity of 3 04 0 5 ft Figure 2 Example of Test Decision Tree and Statement of Results Yes Alarm Alarm gt J No Yes lt _ lt Alarm 4d E No Yes pe Alarm EE I A Statement Alarmat Not Alarmat Statement of Test Results 3 0 ft Is within manufacturer s specification of 3 0 0 5 ft Is within manufac
24. erall 9 5x6 5x7 in 24 1x 16 5 x 17 8 cm Weight approximately 11 Ib 5 0 kg with battery Hose length esimni 5 ft 1 5 m Oil Reservoir Volume sss approx 30 ml Power Requirement iii 12 V DC 6 5 Amp Hr Ni MH Battery RUDOL oil a NF grade white mineral oil aromatics free saturated aliphatic hydrocarbons Viscosity 29 centistokes 240 C Specific gravity 0 87 25 C RUDOL is a registered trademark of Witco Chemical Corp It conforms to the FDA CFR 172 878 which allows for direct skin amp food contacts and stabilized with Vitamin E for long shelf life 3 0 Principles of Operation 3 1 General The Gemini 501 B Aerosol Generator Smoke Detector Analyzer operates on the principle of nebulization of a liquid to produce a poly dispersed micro sized spray with a relatively large mass median diameter An impactor reduces the median diameter by selectively removing the larger diameter particles The remaining aerosol is diluted by a large volume of room air at a constant rate from the blower Hose and wands carry the aerosol up to a shroud which covers the test detector at the ceiling A dual head compressor vacuum diaphragm pump is used in the system The compressor line provides the air pressure necessary for the operation of the nebulizer Aerosol output and particle size distribution from the nebulizer is kept constant by maintaining a
25. ge bubbles in Nebulizer Or clogged nebulizer B p18 reservoir Clean impactor holes using can air DO NOT enlarge High aerosol generation Overloaded filter Replace vacuum filter element Check filter Drain reservoir open connection elbows to make sure that all tubes are tightly connected Install drain reservoir Calibration Shift See above See above Vacuum line leak Check line connections drain reservoir Calibrate Wrong Nebulizer the Tester with the Nebulizer Detector fails to alarm Insufficient aerosol Increase to the maximum concentration Defective detector Switch to a new detector Unmatched nebulizer Calibrate nebulizer with the Tester Pressure LED cannot be Leakage defective pump Contact Gemini Scientific adjusted to green OK Low battery Charge battery overnight using charger provided at 15 psig Concentration cannot be Filter overload Change filter element adjusted to reach zero Vacuum line leaks or Locate and fix leak Or contact Gemini pump fails Pump running no pressure Major pressure leak Check for leak or pump function Dilution air indicator stays at Low battery Charge battery overnight or use optional AC Adaptor Yellow Or it cannot be Blockage in hose or wand Remove hose or wand blockage if present adjusted to Green Incorrect Diffuser openings Yellow Enlarge some diffuser holes Red Tape close some diffuser holes Transducer calibration Contact Gemini shifted 16 7
26. he NFPA 72 National Fire Alarm Code 1996 It recommends evaluation of smoke detector sensitivity within one year after installation and every alternate year thereafter The recommended test methods include the use of smoke aerosol and calibrated sensitivity test instrument to verify the approved or manufacturer specified sensitivity range Underwriters Laboratories through its UL 268 standard considers detectors to be acceptable if its sensitivity are between 0 5 to 4 0 ft obscuration when exposed to the visible gray smoke in a UL smoke chamber This standard applies only if the manufacturer has not specified the sensitivity range Authority Having Jurisdiction AHJ The Fire Marshal or Fire Chief at the state or local level is responsible for enforcing their published standards or codes These standards generally follow some national standards with or without modification to suit the local need For example the Boston Fire Department requires detectors located in elevator waiting areas to meet a sensitivity of 3 0 ft or higher This is to avoid frequent false alarms from smoldering cigarettes that passengers leave prior to boarding the elevators 11 5 3 Sensitivity Ranges Smoke detector manufacturers are required by UL to specify the nominal sensitivity range of their production detectors The ranges vary widely among manufacturers and between types of detectors Typically nominal sensitivity for a photoelectric type is about 3 0 0
27. iezoelectric quartz crystal The frequency shift of the crystal is a function of its weight gain from the depositing aerosol Thus the monitor measures aerosol mass concentration in terms of frequency change of the crystal Sensitivity of the monitor is in the order of 0 01 mg m The UL Smoke Box and the Gemini 501 B use different methods to measure smoke The light obscuration property of the smoke is used to quantify the smoke in the UL Box whereas the mass weight concentration is used for the Gemini instrument Since the minimum amount of smoke needed to trigger the alarm of the detector defined as its sensitivity is equivalent for both the UL smoke box as well as for the Gemini 501 B the alarm points of detectors are used to bridge the two systems by making equivalent scales The alarm points in terms of light obscuration for the 6 standard reference detectors were previously determined in the UL Smoke Box The detectors cover the necessary sensitivity range and consist of both type detectors There are valid physical reasons for the difference in the scales for the two types of detectors 18 APPENDIX B Nebulizer Assembly amp Maintenance Note Nebulizer Assembly consists of part 3 4 5 6 7 9 11 only TARGET O RINGS PIECE 9 4 ORANGE COVER HOUSING JET 10 6 CAP TAB 5 INLET 3 8 DIP TUBE x 7 Y f wl FILTER SCREEN 11 RESERVOIR 1 7 f To Disassemble Nebulizer Remove Inlet 8 with ho
28. librated at the factory before shipment there is no assurance that the calibration will remain unchanged after it has been used in the field for any length of time By using a working standard you can check your own calibration and avoid returning the instrument to the factory A working standard in the form of two commercial smoke detectors one ion chamber type and the other photoelectric can be used to determine the reference benchmarks while the instrument is new and in calibration The benchmarks are the alarm threshold of the two detectors based on the LCD sensitivity readings of the instrument Store these two working standard detectors and only use them to check the Gemini Tester Any change in the alarm thresholds of these two detectors in subsequent tests can reasonably be assumed to be a shift in calibration of the instrument rather than to shift in detector sensitivity Periodic checking with the standards may be used as the criteria for need of service action i e cleaning of small orifices and filter change and thus to insure correct calibration The two working standard detectors we recommend are the System Sensor 1451 ionization type and the ESL 611U pulse LED photoelectric Other well designed detectors may also be used After familiarizing yourself with the instrument by triggering the alarm on several smoke detectors and recording the concentration sensitivity readings the alarm threshold for the two standard detectors shoul
29. nt of Battery ii 17 FIGURE 1 Front View of Model 501 A Tester ie 4 FIGURE 2 Example of Test Decision Tree amp Statement of Results sse 13 TABLE 1 Problem Diagnostics usa aaa aan Aaa 16 TABLE 2 Replacement Parts a I A iaia 17 TABLE 3 ACCESSES reri Ee eter ERI leoni sashes E UE A quete e ddnde d de c eode 17 APPENDIX A Calibration of the Gemini 501 B nennen enne 18 APPENDIX B Nebulizer Assembly amp Maintenance sse men mem rennen 19 APPENDIX C Sample Smoke Detector Test Report i 20 APPENDIX D Instructions on How to Change the Vacuum Filter Element ii 21 APPENDIX E Material Safety Data Sheet RUDOL OIL senem emen 22 APPENDIX F Pictorial IIlustrations i 24 APPENDIX G Duct Detector Testing iii aan anali ilari 25 Warranty Gemini Scientific Corp warrants the instrument described herein to be free from defects in material and factory workmanship for a period of one year and agree to repair such instruments which under normal use and service disclose the defect to be the fault of Gemini Scientific Corp Gemini Scientific Corp s obligation under this Warranty relates to the original purchaser and is limited to a return of the purchase price or at the Gemini Scientific Corp s sole discretion to the repair or replacement of the instrument or any of its parts which
30. ol mass concentration in mg m3 The calibration reading on the LCD allows the operator to determine the sensitivity of the detector and compare it to the range specified by the manufacturer as printed on the back of each detector The instrument can save a considerable amount of time for inspection personnel who must remove detectors from ceiling positions for periodic cleaning or testing Using the hose wands and shroud test smoke is delivered to the detector without removing it from the ceiling From the test results inspectors can decide whether to remove the detector for cleaning or sensitivity adjustment The current NFPA 72 Fire Alarm Code 1996 recommends sensitivity inspection of installed detectors within one year after installation and every alternate year thereafter 2 0 Specifications Aerosol Characteristics Particle size Number median diameter 0 2 micrometer um Mass median diameter 0 45 um Repeatability ee 5 Generation Characteristics Test stream flow rate 60 L min Aerosol flow rate n 0 4 2 L min Concentration Range Adjustable 2 eine tees 0 40 mg m3 0 4 ft obscuration Reset concentration 4 Type of aerosol Rudol Oil Operating temperature 24 3 C 75 5 F Mechanical Characteristics Dimensions ov
31. prove to be defective For this Warranty to be in effect any material or part alleged to be defective is to be returned to Gemini Scientific Corp with our prior written approval fully insured and transportation prepaid by the purchaser within 12 months from date of delivery This Warranty shall not apply to an instrument which has been I subjected to misuse negligence or accident 2 connected installed operated or adjusted other than in accordance with instructions furnished by the Gemini Scientific Corp 3 repaired modified or serviced by someone not authorized by the Gemini Scientific Corp so that in our judgment on the performance or reliability of the instrument has been impaired We reserve the right to make replacement with equivalent merchandise and to make changes at any time in the specification design or construction of the instrument without incurring obligation to make any commensurate changes in units previously delivered Gemini Scientific Corp assumes no liability for consequential or contingent damages for a defective instrument covered by this Warranty failure of delivery in whole or part or for any other cause This Warranty and the writing to which it is attached constitute the understanding of the buyer and seller so that no terms conditions or agreement purporting to modify the terms hereof shall be binding unless made in writing and signed by an authorized agent of the home office of the Gemini Scientific Corp
32. ressure Adjust Concentration Adjust 5 3 2 8 Blower Hose Wands Wall mounted adaptor diffuser and Shroud 6 SHE BET Der gp oT 6 3 2 10 Exposure Tilme s n tert temere eee E ce adhe 6 32 311 Operation Ed aaa 7 4 0 Operating Instructions 1 orte rente eoe orbe crei eet e ipe eee epp e bee ened e Ee ee Re eeu ee xao 9 4 1 Initial Operation Ec 9 4 2 Oil Temperature ria depre reb epee tunes conde Pepe teu d e ceeds teens c pud 10 4 3 Test ComlpletlOn 2 hem temet ve eee 10 4 4 Storage of Instrumentsin toinen dede ien ln dete Pede deed nno 10 5 0 Inspection Protocol and Test Procedures i 11 5 1 General Objective ss 1 5 eee lilla 11 5 2 Legal and Technical Authorities enn 11 5 3 Sensitivity Rarigesg ei notet edere eR HR eee en n iaia paia 12 5 4 Test Procure x 12 5 5 Calibration and Accuracy cece eeeeeceneeeeeeeeeeeeeeeaeeeeeeaeeseeeeeeaeeseaaeeeneeeeenaeeeeeas 14 5 6 Operational Preca tions isiin dert tar fedet ien de eit ades 14 6 0 SetViclrig oui ert ea RE em er retra er EN ERE 15 6 1 General or tp eet pee A Eger ie e EE ee 15 6 2 Calibration and Working Standards sese 15 6 3 Routine Maintenance eniti cendi itineri 16 6 4 Problem Diagnostics Ree Diss Diei leen leali 16 0 Replacement Parts anioni eg al ente rri e ai EDI et E 17 7 1 Table of Parts 5 nie cete e deer ce ge a 17 7 2 Replaceme
33. se from Housing 2 Remove Housing with the Reservoir from the Manifold on the front panel with a pulling and twisting motion Separate Reservoir 1 and Housing with a breaking and pulling motion Remove the exposed aerosol generating parts by grasping the Tab 3 with thumb and forefinger and pull Target Piece 4 straight out of the Housing Remove Cap 5 and Dip Tube 7 Leave the Jet 6 and the O ring 8 in place DO NOT take the jet out from the nebulizer housing See Figure 5 E amp F p27 To clean or remove obstruction Soap or detergent may be used to clean all of the above parts Flush parts with water Be careful not to enlarge any of the holes in the parts Air dry only before reassemble To Assemble Nebulizer Place BOTH of the o rings over the Jet 6 Using dip Tube 7 as handle insert the Cap 5 into the Jet 6 inside the Housing 2 Hold the Housing 2 with your left hand as shown by the above picture while bending the Dip Tube 7 push the Cap 5 with your right index finger into the underside of the O ring until it snaps Grab the Tap 3 and slide the Target Piece 4 between the guides of Housing 2 and Cap 5 as far as it will go A few attempts may be needed for it to work Snap Reservoir 1 back into Housing 2 Note Always empty oil from the nebulizer and cover the opening with the provided orange cap 10 when it is not being used to prevent dirt from getting in through the inlet opening 19 APPENDIX C Sample Smok
34. test Normally only a single test is needed for routine sensitivity inspection of detectors To assure such an outcome choose a smoke concentration at the upper limit of the sensitivity range specified by the manufacturer usually located on the back of the smoke detector The detector should alarm since it is statistically the highest concentration allowable by the manufacturer However if the above detector did not alarm you have to do additional tests to determine the concentration that would trigger the detector In cases where the detector has a history of nuisance false alarm you may have to do two or more tests to find the lowest concentration level below which the detector would not alarm Figure 2 page 12 contains an example in selecting the smoke concentration settings for sensitivity tests under the NFPA 72 National Fire Alarm Code 1996 requirements To get higher test precision than the routine inspection requirement use an increment of 0 2 ft instead of 0 5 ft You may also want to establish other test criteria by consulting with your state Fire Marshall and manufacturers to fit your own needs and resource Record all data by using either the sample test report in APPENDIX C or your own recording method 5 2 Legal and Technical Authorities Smoke detector inspection and sensitivity testing techniques are based ONLY on the following three recognized authorities The National Fire Protection Association NFPA publishes t
35. testing hose connector hose to the hose fitting from your tester as shown in the figure above Do not connect any wands 2 Ifthe duct detector can be reached through an access panel door extend the hose into the duct and place it over the inlet tube of the detector see figure on the previous page If not remove the duct detector and perform the same procedure 3 Turn the tester on Adjust the dilution control knob to set the dilution LED indicator to green OK position 4 Follow the usual procedure for the testing of detectors 26
36. turer s specification of 3 0 0 5 ft 3 0 ft and 2 5 ft Is within manufacturer s specification of 3 0 0 5 ft 2 5 ft 2 1 ft Is within manufacturer s specification of 3 0 0 5 ft 3 5 ft and 3 0 ft Is within manufacturer s specification of 3 0 0 5 ft Is a borderline case Outside manufacturer s specification Within test error STI 3 9 ft zi Is a borderline case Outside manufacturer s specification Within test error 3 9 ft Is above the upper limit of manufacturer s specification and outside of test error At or below 1 0 ft Is outside of the manufacturer s range Subject to false alarm 13 If you recommend rejecting detectors based on sensitivity test results make sure that your tester is in calibration and would survive challenges from the manufacturer or Authority Having Jurisdiction This is especially important in dealing with borderline cases For confirmation of test results we suggest testing the accepted and the rejected detectors of the same brand sequentially one after the other or side by side using a common concentration level 5 5 Calibration and Accuracy Each instrument is individually calibrated The calibration relates instrument sensitivity display readings to smoke output in terms of its mass concentrations mg m3 and to its corresponding UL 268 light obscuration ft scales for ionization and photoelectric detectors The calibration is based on tests performed with pressur
37. ure the temperature probe should be inserted into the small aluminum well on top of the nebulizer Temperature reading is shown at the lower left corner of the LCD The sensitivity reading on the LCD is corrected for fluctuations in temperature However operating temperature should not be below 70 F when smoke output is greatly reduced due to the low temperature Temperature above 90 degree during testing would be fine since the sensitivity is adjusted accordingly 3 2 10 Exposure Time The purpose of the timer is to help the inspector control the smoke exposure time If the detector does not respond within 30 to 45 seconds after exposure stop the test Reset to a higher concentration level for the next test However for some brands of detectors with a longer sampling time or in borderline cases 45 to 55 seconds or more of exposure time may be required to find the maximum sensitivity How fast the detector responds should not be used to determine the sensitivity of the detector To avoid nuisance alarm some detectors are designed to alarm only after exposure to smoke for at least 24 seconds at the proper designated level of concentration Please refer to the smoke detector manufacturer s specifications and manual for more details 3 2 11 Operation The Model 501 B is equipped with a 12 V DC Ni Metal Hydride rechargeable battery refer to pg 4 Figure 1 Newer models May 2004 or later Model are also equipped with an AC Adapter External
38. y charger provided Do not use charger in wet or damp conditions It is intended for indoor use only The charger is designed to operate on standard US electrical power 115 120 volts AC only Do not attempt to use any other voltage Unplug the charger when not in use Do not abuse the charger cord Charge battery overnight before using The LED on the charger will only turn green when the battery is being charged continuously for 10 hours or more 4 0 Operating Instructions 4 1 Initial Operation Working Standard Establish a working standard for your analyzer when you receive the instrument for the first time and every time it is recalibrated Pg 15 6 2 Location of Instrument The tester should be used in a ventilated or large room to avoid exposing operator to aerosol concentration greater than the OSHA limit of 5 mg m3 i Level position The tester should be kept at a level position Nebulizer and Oil Filling Fill the nebulizer reservoir from the housing opening with Rudol liquid See Appendix F Figure A p23 The top level of the liquid should be about 1 4 inch below the joint line between the housing and the reservoir Refill when the level drops to about 1 4 inch from the bottom of the dip tube Note Remove nebulizer from the tester and empty all the oil before storage Wet the manifold O ring with a little oil before using a twist and push motion to fully insert the nebulizer into the manifold When you need to
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