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Gemini 501-B, User Manual

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Gemini 501-B User Manual Download Page 28

 

 

 

25 

 

APPENDIX G:  Duct Detector Testing 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

1.  Use the normal method of generating smoke from the 

Gemini Tester. 

2.  Do not use the wands and the shroud. 

3.  Insert a restrictor at the end of the hose (0.6” diameter 

hole). * 

4.  Use a connector-hose to connect the hose from the tester. 

5.  Any flexible hose with 1-1/2” to 2-1/2” inside diameter can 

be used as connector.  Tape the connection with duct tape. 

6.  Insert the hose into the inlet tube of the detector that has 

been removed from the duct for testing. 

7.  Allow space for excess smoke to flow out. 

8.  Maintain green on the LED. 

 

 

*  

The restrictor is available from Gemini.  Contact Gemini at  

 

(408) 554-0310 if you have any questions.

 

Electrical Box

 

Summary of Contents for 501-B

Page 1: ...ITY ANALYZER Model 501 B USER S GUIDE 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...

Page 2: ...ORS 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...

Page 3: ...neral Objective 11 5 2 Legal and Technical Authorities 11 5 3 Sensitivity Ranges 12 5 4 Test Procedures 12 5 5 Calibration and Accuracy 14 5 6 Operational Precautions 14 6 0 Servicing 15 6 1 General 1...

Page 4: ...AY 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 o...

Page 5: ...ng 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...

Page 6: ...ream 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 th...

Page 7: ...Compressor Pump Switch On Off 3 Concentration Adjust Knob 4 Pressure Adjust Knob 5 Pressure LED Indicator 6 Dilution LED Indicator 7 Timer Reset Button 8 Pressure Line Jet 9 Nebulizer Reservoir 10 Dra...

Page 8: ...attery 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 Concentr...

Page 9: ...ntact 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 be...

Page 10: ...VDC battery to the AC Adapter Ext Battery jack located on the left panel 2 Set the Power Source switch to the EXT Power position 3 Set the Function Switch 1 at the On position 4 Repeat procedures 4 5...

Page 11: ...charging rate exceeds 1 amp ONLY use the NiMH battery charger provided D Do not use charger in wet or damp conditions It is intended for indoor use only E The charger is designed to operate on standar...

Page 12: ...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 di...

Page 13: ...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 s...

Page 14: ...ria 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...

Page 15: ...ing 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...

Page 16: ...nufacturer s specification of 3 0 0 5 ft B 3 0 ft 2 5 ft Is within manufacturer s specification of 3 0 0 5 ft C 3 0 ft and 2 5 ft Is within manufacturer s specification of 3 0 0 5 ft D 2 5 ft 2 1 ft I...

Page 17: ...rosol 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 meas...

Page 18: ...e 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 a...

Page 19: ...heck filter connection elbows to make sure that all tubes are tightly connected Install drain reservoir Calibration Shift See above Vacuum line leak Wrong Nebulizer See above Check line connections dr...

Page 20: ...ydride Battery B0101 Battery Charger NiMH F0603 B Vacuum Filter with indicator box of 10 F0603 B1 Vacuum Filter each O1501 Rudol TM Liquid Oil 501 B AC Adaptor for earlier Models Optional AC adaptor f...

Page 21: ...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 m3 The UL Smoke Box and the Gemini 501 B use different met...

Page 22: ...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...

Page 23: ...ocation Number Number Model P I Sensitivity Point Fail F Range Tested By Name Signature Date Page Building Location Room Zone of Property Name Property Address Property Contact Person Instrument used...

Page 24: ...on the vacuum filter away from the elbows while keeping orange fitting pushed in 7 Replace with a new vacuum filter Observe correct orientation 8 Insert black tube from the vacuum filter completely in...

Page 25: ...22 APPENDIX E Material Safety Data Sheet RUDOL OIL...

Page 26: ...23...

Page 27: ...IX F Pictorial Illustrations Fig A Correct way of filling the nebulizer Fig B Symptom of clogged nebulizer Fig C Removal of nebulizer housing by twist pull motion Fig D Removal of target piece from th...

Page 28: ...nnect the hose from the tester 5 Any flexible hose with 1 1 2 to 2 1 2 inside diameter can be used as connector Tape the connection with duct tape 6 Insert the hose into the inlet tube of the detector...

Page 29: ...h 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 T...

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