1、Designation: F2826 14Standard Test Method forEvaluating the Sustained Air Performance and ExhaustEmission Efficiencies of Central Vacuum Cleaning Units1This standard is issued under the fixed designation F2826; the number immediately following the designation indicates the year oforiginal adoption o
2、r, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method is a laboratory test for determining thesustained air perform
3、ance and Exhaust Emissions of a centralvacuum cleaner when tested under laboratory conditions.1.2 This test method is applicable to all central vacuumcleaners with or without any type of internal filter. This testmethod is intended to help indicate how performance may beaffected after multiple times
4、 of vacuuming over an extendedperiod of time.1.3 The inch-pound system of units is used in this standardexcept for weight measurements, which are measured in grams.The values stated in parentheses are given for information only.1.4 This standard does not purport to address all of thesafety concerns,
5、 if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E1 Specification for ASTM Liquid-in-Glass Th
6、ermometersE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodF820 Test Method for Measuring Air Performance Charac-teristics of Central Vacuum Cleaning Systems2.2 ISO Standard:3ISO 5
7、011 Inlet Air Cleaning Equipment for Internal Com-bustion Engines and CompressorsPerformance Testing3. Terminology3.1 Definitions:3.1.1 exhaust emissionsmeasure of the efficiency of a unitto capture the loading media. Exhaust Emissions is (1 (theweight of the media exhausted into the exhaust emissio
8、ns bag,divided by the weight of the media introduced) 100).3.1.2 input power, W, nthe rate at which electrical energyis absorbed by a vacuum cleaner motor/fan system.3.1.3 model, nthe designation of a group of vacuumcleaner systems having the same mechanical and electricalconstruction.3.1.4 populati
9、on, nthe total of all units of a particularmodel vacuum cleaner system being tested.3.1.5 sample, na group of vacuum cleaner systems takenfrom a large collection of vacuum cleaner systems of oneparticular model, which serves to provide information that maybe used as a basis for making a decision con
10、cerning the largercollection.3.1.6 seal vacuuma water lift reading for a power unitwhen the inlet is entirely closed or sealed.3.1.7 standard air density, std, lb/ft3,natmospheric airdensity of 0.075 lb/ft3(1.2014 Kg/m3).3.1.7.1 DiscussionThis value of air density corresponds toatmospheric air at a
11、temperature of 68F (20C), 14.696 psi(101.325 kPa), and approximately 30 % relative humidity.3.1.8 suction, inches of water, nin a vacuum cleanersystem, the absolute difference between ambient and sub-atmospheric pressure.3.1.9 sustained air performance, nthe ability of a vacuumcleaner to maintain ai
12、r performance with a known quantity ofmedia aspirated into unit throughout a number of feedingcycles.3.1.10 test run, nthe definitive procedure that producesthe singular result.3.1.11 test station pressure, Bt, inches of mercury, nfor avacuum cleaner system, the absolute barometric pressure at thete
13、st location (elevation), and test time.3.1.11.1 DiscussionIt is not the equivalent mean sea levelvalue of barometric pressure typically reported by the airport1This test method is under the jurisdiction ofASTM Committee F11 on VacuumCleaners and is the direct responsibility of Subcommittee F11.22 on
14、 Air Perfor-mance.Current edition approved Jan. 15, 2014. Published January 2014. DOI: 10.1520/F2826-142For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards
15、 Document Summary page onthe ASTM website.3Available from International Organization for Standardization (ISO), 1, ch. dela Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http:/www.iso.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United
16、 States1and weather bureaus. It is sometimes referred to as theuncorrected barometric pressure (that is, not corrected to themean sea level equivalent value).3.1.12 unit, na single vacuum cleaner system of the modelbeing tested.3.1.13 working vacuuma water lift reading value at anorifice causing a v
17、acuum equivalent to a standard cleaning toolapplied to the floor or rug.4. Significance and Use4.1 The test results allow comparison of sustained airperformance of central vacuum cleaners that employ variousmethods of separating the dirt from the air used to convey thedirt to the central power unit.
18、 The results will be expressed asa percentage of the original vacuum performance after loadinga prescribed weight of media.4.2 The test results will allow a comparison of emissions bymeasuring the media emitted during the test and expressing thisas an Exhaust Emissions.5. Apparatus5.1 Water Manomete
19、r, or equivalent instruments, to providemeasurements from 0 to 150 in. (3810 mm) of water inincrements of 0.1 in. (2.5 mm).5.2 Wattmeter, to provide measurements accurate to within61%.5.3 Voltmeter, to provide measurements accurate to within61%.5.4 Barometer, with an accuracy of 60.05 in. (1.27 mm)H
20、g, with scale divisions 0.02 in. (0.51 mm) or finer.5.5 Thermometer, solid stem thermometer having a rangefrom 18 to 89F (8 to 32C) with gradation of 0.2F (0.1C)increments and conforming to the requirements for thermom-eter 63F or 63C as prescribed in Specification E1.5.6 Voltage Regulator System, t
21、o control the input voltage tothe vacuum cleaner motor/fan system. The regulator systemshall be capable of maintaining the vacuum cleaners ratedvoltage 61 % and rated frequency 61 Hz having a wave formthat is essentially sinusoidal with 3 % maximum harmonicdistortion for the duration of the test.5.7
22、 Weighing Scale (for weighing media), accurate to 0.0035oz. (0.1 g) and having a weighing capacity of at least 1000 g.NOTE 1All available scales may not be suitable for this test method.Any scale considered for use in this test method shall be checked forsuitability in accordance with the requiremen
23、ts listed above.5.8 Stop Watch/Clock, with a second hand or other type ofequipment capable of establishing the specified rate of move-ment and total cycle time.5.9 Suction Fixture, used to feed test media and makevacuum readings. The suction fixture will be used for feedingthe media and measuring th
24、e vacuum by interchanging the feedtube and manometer tube. (See Fig. 1.)5.10 Emissions Collection Bag, minimum 6 gal capacity,15.2 mill disposable filter bag with a minimum quality of thefollowing features: 98.4 % dust retention of particle sizes downto and including 0.3 microns (as tested per ISO 5
25、011), an airpermeability rating of 239 L/m2s, an initial pressure loss of480 Pa, and a 277 kPa burst strength. (For units without anintegral discharge tube, a non-permeable shroud shall be fittedover the discharge area such that all emissions are routed intothe emissions bag.)FIG. 1 Suction FixtureF
26、2826 1426. Sampling6.1 A minimum of three units of the same model centralvacuum cleaner system, selected at random in accordance withgood statistical practice, shall constitute the population sample.6.1.1 To determine the best estimate of the sustained airperformance and Exhaust Emissions for the po
27、pulation of thecentral vacuum cleaner system model being tested, the arith-metic mean of the Sustained Air Performance and ExhaustEmissions of the sample from the population shall be estab-lished by testing it to a 90 % confidence level within 65%ofthe calculated mean.46.2 Annex A1 provides a proced
28、ural example for determin-ing the 90 % confidence level and when the sample size shallbe increased.7. Materials7.1 MedialCommercial grade talcum.8. Conditioning8.1 Test RoomThe test room shall be maintained at 70 65F (21 6 3C) and 45 to 55 % relative humidity.8.2 All components involved in the test
29、shall remain and beexposed in the controlled environment for at least 16 h prior tothe start of the test.9. Preparation for Test9.1 New Test Central Vacuum Systems:9.1.1 Preconditioning a New Central Vacuum SystemRunthe system in a rated voltage 61 % and rated frequency 61Hzwith filters in place for
30、 1 h. Unit is to run in at full open orificeduring preconditioning period.9.1.2 For systems with non-disposable filters, weigh andrecord the filters original weight to the nearest 0.0035 oz (0.1g). This may not be possible with some systems in which thenon-disposable filter cannot be removed.9.2 Use
31、d Test Central Vacuum Systems:9.2.1 Recondition a used test central vacuum system prior toeach test run as follows:9.2.1.1 Thoroughly remove excess dirt from the test centralvacuum system. Without using tools for disassembly, clean theentire outer surface, ductwork, and inside of the chambersurround
32、ing any and all filters (disposable or not).9.2.1.2 For systems using disposable filters, use new dispos-able filter(s) for each test. Thoroughly clean the inside of thechamber surrounding the primary filter each time the filter isreplaced.9.2.1.3 For systems using cloth filter bags or other types o
33、fnon-disposable dirt receptacles, empty according to manufac-turers instructions after each test run, and clean the cloth filterbag or non-disposable dirt receptacle until its weight is within0.07 oz (2 g) of its original weight (see 9.1.2).9.3 Set-Up for Sustained Air Performance and ExhaustEmissio
34、ns Test:9.3.1 Set up the test equipment and test unit as shown in Fig.2. Connect the suction fixture to the inlet side of the test unitand the emissions collection bag to the discharge side of thetest unit. Ensure connections are secure and sealed. Do notattach a muffler to the exhaust line during t
35、his test.9.3.1.1 Energize the test unit for 60 min with the inletreduced to a12 in. orifice, at rated voltage 61 % and rated4Two sources of the talcum (USP Grade Supreme Talc) known to the committeeat this time are Fischer Scientific Co., 1600 West Glen Avenue, Box 171, Itasca, IL60143 and Luzenac A
36、merica (Rio Tinto Minerals), 8051 E. Maplewood Ave.,Building 4, Greenwood Village, CO 80111.FIG. 2 Sustained Air Performance and Exhaust Emissions SetupF2826 143frequency 61 Hz to eliminate any moisture in the emissionscollection bag. For vacuum cleaners with dual nameplatevoltage ratings, conduct t
37、he test at the highest voltage.9.3.1.2 Ensure that there is no leakage between the dis-charge side of the test unit and emissions collection bag.Ensure that there is no leakage of the emissions collection bag.9.3.1.3 De-energize the vacuum cleaning system and imme-diately weigh the emissions collect
38、ion bag. Record its weightto the nearest 0.0035 oz (0.1 g).9.3.2 Connect manometer or equivalent instrument to thetap on the suction fixture. With the central vacuum de-energized, set manometer to zero and check all instruments forproper operation.NOTE 2The suction fixture and manometer will be alte
39、rnatelyconnected to the suction fixture to feed media and record vacuumrespectively during the test cycle.9.3.3 Record absolute barometric pressure (not corrected foraltitude) and dry- and wet-bulb temperature readings of the testarea. Read barometric pressure to the nearest 0.02 in. ofmercury (0.51
40、 mm Hg), and the dry- and wet-bulb tempera-tures to the nearest 0.2F (0.1C).9.3.4 Connect a wattmeter and voltmeter in accordance withFig. 3.9.3.4.1 Wattmeter CorrectionIf needed, the indicationmay be corrected for voltmeter and wattmeter potential coilloss by opening the load circuit on the load si
41、de of thewattmeter with the line voltage at the operation value. Thewattmeter current connection may be at its most sensitiveposition. Subtract this loss value from the total load indicationto obtain the true load. As an alternate method, use thefollowing equation:WC5 WI2 V2RT(1)Where:WC= corrected
42、wattage,WI= indicated wattage,V = voltmeter reading, andRT=RpXRv/(Rp+RV.Where:RT= total resistance,Rp= wattmeter potential coil resistance, andRv= voltmeter coil resistance.10. Test Procedures10.1 Sustained Air Performance and Exhaust Emissions:10.1.1 Condition or restore test units in accordance wi
43、th 9.1through 9.2.1.3.10.1.2 Maintain power unit and dirt canister in their normaloperation orientation with the setup described in 9.3.1 through9.3.4.1 for sustained air performance and exhaust emissionsmeasurement.10.1.3 After the five minute run-in and with the vacuumcleaning system operating at
44、a constant rated voltage 61%and rated frequency 61 Hz. Record the initial suction andinput power in that order. Read the suction to the nearestgradation of the appropriate instrument.10.1.3.1 Take the suction readings (working vacuum at 0.75in. (19.00 mm) orifice referred to as “suction” from herefo
45、rward) as soon as the manometer reaches a true peak. (Whenusing a fluid type manometer, the liquid level may peak, drop,and peak again. The second peak is the true peak reading. Aperson conducting the test for the first time shall observe atleast one run before recording data. (See Test Method F820
46、forinstructions on how to minimize the overshoot (first peak) ofthe liquid level.)10.1.4 With the power unit still energized, disconnect themanometer and connect the suction fixture to the tap on theapparatus as shown in Fig. 1.10.1.5 Feed the test media at the rate of 1.76 6 0.07 oz/min(50.0 6 2.0
47、g/min) into the suction fixture. Allow the powerunit to pick-up all 50.0 g of the test media.10.1.6 De-energize the power unit until the motor stopsrotating; reconnect suction fixture to manometer.10.1.7 Re-energize the power unit and let it run for 10 s ata constant rated voltage 61 % and rated fre
48、quency 61 Hz.Record the suction and input power in that order. Read thesuction to 0.1 in. of water lift.10.1.8 Take the suction reading as soon as the manometerreaches a true peak. (When using a fluid type manometer, theliquid level may peak, drop, and peak again. The second peakis the true peak rea
49、ding. A person conducting the test for thefirst time shall observe at least one run before recording data.See Test Method F820 for instructions on how to minimize theovershoot (first peak) of the liquid level.)10.1.9 Repeat 10.1.5 through 10.1.8 eight times until a totalof 400 g of test media are ingested. Record the suction andinput power versus the cumulative amount of test mediaingested. See Table 1.10.1.10 De-energize the unit after ingesting 400 g of testmedia and immediately record the weight of the emissionsFIG. 3 Schematic Dia
