1、Designation: F1601 01 (Reapproved 2011)An American National StandardStandard Test Method forMotor Life Evaluation of an Electric Motorized Nozzle forCentral Vacuum Cleaning Systems1This standard is issued under the fixed designation F1601; the number immediately following the designation indicates t
2、he year oforiginal adoption or, 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 covers the motorized nozzle used
3、 inhousehold or commercial central vacuum cleaning systems.1.2 This test method provides a test for determining oper-ating motor life in hours by an accelerated laboratory proce-dure. The motors are tested while mounted and operated in themotorized nozzle.1.3 This test method covers only the motoriz
4、ed nozzle. Thesystem used to provide the airflow source is not underconsideration.1.4 This test method is limited to the determination of motorlife for an electrically powered household or commercialmotorized nozzle.1.5 The values stated in inch-pound units are to be regardedas the standard. The val
5、ues given in parentheses are forinformation only.1.6 This standard does not purport to address all of thesafety concerns, 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 re
6、gulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D75 Practice for Sampling AggregatesE337 Test Method for Measuring Humidity with a Psy-chrometer (the Measurement of Wet- and Dry-Bulb Tem-peratures)F431 Specification for Air Performance Measurement Ple-num Chamber for Vac
7、uum CleanersF608 Test Method for Evaluation of Carpet Embedded DirtRemoval Effectiveness of Household/Commercial VacuumCleanersF655 Specification for Test Carpets and Pads for VacuumCleaner Testing3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 motor lifelimited by failure of
8、the motor; failure ismotor stoppage.3.1.1.1 DiscussionAny failure integral with the motor,such as armature assembly, field assembly, housing(s) bear-ings, motor cooling fan, carbon brush assemblies, motor-mounted non-resettable thermal protective devices, or anyother component judged to be integral
9、with the motor, shall bejudged as motor stoppage.4. Significance and Use4.1 The test results provide an indication of the motor life ofan electric motorized nozzle. The end of motor life will bejudged in accordance with Section 3.5. Apparatus and Materials5.1 Voltage Regulator Systemto control the i
10、nput voltageto the motorized nozzle. The regulator system must be capableof maintaining the motorized nozzles rated voltage 61 % andrated frequency 61 Hz with a wave form that is essentiallysinusoidal, with 3 % maximum harmonic distortion for theduration of the test.5.2 Voltmeter, to provide measure
11、ments accurate to within61%.5.3 Timer and Switch, having the capacity to control theoff/on duty cycle of the nozzle and air flow source during thelife test.5.4 Wattmeter, to provide measurements accurate to within61%.1This test method is under the jurisdiction ofASTM Committee F11 on VacuumCleaners
12、and is the direct responsibility of Subcommittee F11.30 on Durability-Reliability.Current edition approved Nov. 1, 2011. Published March 2012. Originallyapproved in 1996. Last previous edition approved in 2006 as F1601 01 (2006).DOI: 10.1520/F1601-01R11.2For referenced ASTM standards, visit the ASTM
13、 website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United
14、 States.5.5 Sharp Edge Orifice Plate,witha114-in. (32-mm)diameter and in accordance with the orifice plate illustrated inSpecification F431.5.6 Plenum Chamber, conforming to the plenum chamberspecifications given in Specification F431.5.7 Water Manometer, or equivalent instrument, measuringin increm
15、ents of 0.1 in. (2.54 mm).5.8 Barometer, with an accuracy of 60.05 in. (1.27 mm)Hg, capable of measuring the uncorrected barometric pressure(test station pressure) with scale divisions of 0.02 in. (0.51mm) or finer.5.9 Thermometer, having a range of at least 18 to 80F (8to +27C) and graduated in 1F
16、(0.5C) increments.5.10 Psychrometer, meeting the requirements of TestMethod E337, with thermometers graduated in increments of1F (0.5C).5.11 Test Carpet, conforming to the specifications for levelloop carpet as described in Specification F655. A carpet thatprovides equivalent nozzle loading results
17、may be used.5.12 Carpet Padding, conforming to the padding describedin Specification F655.5.13 Test Cleaner or Airflow SourceThe motorized nozzlemotor life evaluation tests shall be conducted using the airflowsource and voltage resulting from the components that com-pose the combination system with
18、which the motorized nozzleis to be used. If used with several systems, the one with themaximum airflow shall be used.5.13.1 OptionA simulated airflow source and adjustedvoltage may be used if they are equal to or exceed the centralvacuum cleaning system with which the motorized nozzle is tobe used.5
19、.14 Text FixtureA moving surface, covered by the testcarpet supported on the test pad, which moves with a horizon-tal reciprocating motion, for a stroke distance of 27 in. (686mm) in each direction at the average rate of 1.8 ft/s (0.55 mps),resulting in 24 cpm (forward and back). This motion shall b
20、egenerated by rotating a 13.5-in. (343-mm) radius arm that shallbe connected to the platform with a suitable link (see Fig. 1).This device shall provide means to hold the motorized nozzlefixed securely by its handle in the operating position while it isin contact with the reciprocating surface. The
21、motorized nozzleshall be restrained suitably in the horizontal operating plane yetallowed freedom of movement in the vertical plane foroperation.5.14.1 OptionThe motorized nozzle can be subjected tothe same cycle as that stated in 5.14 while the carpetedplatform is held stationary (see Fig. 1).5.14.
22、2 For either option, the reciprocating motion shallfollow the same duty cycle as that specified for the vacuumcleaner or airflow source and motorized nozzle in 7.7.5.14.3 The motorized nozzles airflow source shall be sta-tionary and positioned so that the hose will be submitted tominimum stress.5.15
23、 Test Dirt, Wedron sand/talc mixture. See Annex A1.6. Sampling6.1 Test a minimum of three units (or a larger sample size,if desired) of similar models using the same motor style andamperage. Select all samples at random in accordance withgood statistical practice. The results shall provide an 80 %co
24、nfidence level within 610 % of the mean value. If not, testadditional samples or reduce the results by the penalty factor ascalculated in 7.12.7. Procedure for Motor Life Evaluation7.1 Determine the initial performance. The suction of thecleaner or airflow source, with the motorized nozzle attached,
25、is to be determined and will be used to ensure that no leaksdevelop to reduce load on the nozzle during the test. For thisinitial test, the nozzle opening is to be sealed to the ASTMplenum chamber with a manometer (or equivalent) connectedto the plenum chamber. The motorized nozzle is to have theagi
26、tator drive connected and a new filter bag in the cleaner orairflow source. The agitator shall be operating freely with thehandle in the operating position, as shown in Fig. 1.7.1.1 With the motorized nozzle opening sealed to theplenum chamber and without an orifice plate in the holder,energize both
27、 the cleaner or airflow source and the motorizednozzle at its rated voltage 61 % and rated frequency 61 Hz for5 min. to stabilize motor temperatures. If either component hasa dual nameplate voltage rating, conduct testing at the highestvoltage.FIG. 1 Test FixtureF1601 01 (2011)27.1.2 With the motori
28、zed nozzle and airflow source operat-ing at the regulated voltages of 7.1.1, insert the sharp-edgeorifice plate in the holder on the orifice box, in accordance with5.5 and 5.6.7.1.3 Record the manometer reading of the combined powernozzle and airflow source as soon as the reading is stabilized.This
29、manometer reading is to be used as the baseline to monitorthe degradation in performance during the test.7.1.4 Record the wattage of the motorized nozzle mountedon the plenum chamber. This wattage reading is to be used asthe baseline to monitor the nozzle load during the test.7.1.5 Repeat the initia
30、l test sequence of 7.1-7.4, recordingmanometer and wattage readings of only the cleaner or airflowsource connected to the plenum chamber.7.1.6 The airflow and wattage reading shall be measuredevery 168 h to determine whether some component has failedand degraded the performance, reducing the load on
31、 the nozzleduring the life test. See 7.10 if the degradation exceeds 40 %.7.1.7 Monitor the suction at the motorized nozzle dailyduring the test, in addition to the weekly measurement on theplenum chamber, to maintain loading and to ensure that nomechanical problems exist.7.2 Use a new section of ca
32、rpet and padding in accordancewith 5.11 and 5.12 without holes, tears, or other signs of wearwhen the test is started. Secure the carpet tautly. The lay of thecarpet pile shall be such that the motorized nozzle moves in thedirection of the lay of the carpet pile during the forward stroke(see Fig. 1)
33、. Measure the carpet pile height to determine thecarpet wear in accordance with 7.5.1.7.3 Install the motorized nozzle on the test fixture, as shownin Fig. 1, with the nozzle connected to the airflow source usinga hose as provided with the unit. The hose with the leastresistance to airflow (smallest
34、 pressure drop) shall be used ifmore than one type of hose can be provided.7.4 If various settings are provided, set the motor speed,suction regulator, nozzle height, or a combination of these, inaccordance with the manufacturers specified setting for usingthe nozzle on the level loop test carpet an
35、d pad. The settingshall be the same as that used for the cleanability embeddeddirt carpet test in Test Method F608.7.5 Keep the load within limits by controlling changes in thecarpet, agitator brush, drive belt, and airflow source, or byreplacing the components as determined in 7.5.1-7.5.4.7.5.1 Rep
36、lace the carpet when one-fourth of the pile heightis worn away, as measured in the center one-third of the stroke,except at the beginning and end of the stroke path.7.5.2 Change the agitator brush every 168 h of cycling timeduring the life test.7.5.3 Change the drive belts every 168 h of cycling tim
37、e orif they cease to drive the agitator on the test carpet prior to 168h. Replace the positive drive belts if they cease to function asintended.7.5.4 During the life test, change the disposable filter orclean the reusable, primary, and secondary filter every 168 h ofcycling time or when the airflow
38、decreases 40 % due to filterclogging. To determine whether the filters must be changed orcleaned prior to the 168 h period, an initial dust clogging testshall be conducted in accordance with the procedure describedin Annex A2.7.6 Perform all tests in an ambient, having a dry bulb,temperature of 68 t
39、o 81F (20 to 27C) and with a relativehumidity of 30 to 50 %.7.7 Operate the central vacuum cleaning system or airflowsource (see 5.13) at the regulated and required voltage to obtainthe desired airflow through the motorized nozzle. Operate themotorized nozzle at its regulated and applicable voltage.
40、Operate both the vacuum cleaner or airflow source andmotorized nozzle from a remote on/off switch that will controlthe test units to a duty cycle of 8 min of operation followed by2 min off following the cyclic criteria set forth in 5.14.7.8 Monitor the suction and wattage input at the motorizednozzl
41、e initially and daily on the test fixture to provide a baseline for identifying whether degradation has occurred. The unitcan then be removed and tested on the plenum chamber todetermine whether it exceeds the degradation limitation inaccordance with 7.10.1.7.9 Spread 10 g of the standard dirt mixtu
42、re (Annex A1)atthe start of the test and once every 24 h of cycling time on thetest carpet. Spread it evenly over the area traversed by thenozzle opening.7.10 The airflow and wattage readings shall be measuredevery 168 h during the test per 7.1-7.1.5 to determine whethersome component has failed or
43、degraded, or both, in perfor-mance, thereby reducing the load on the nozzle or indicatingfailure.7.10.1 Air Flow LossIn accordance with the proceduredescribed in Annex A2, the suction at the start of the test, asdetermined in 7.1.3, is to be used as the base for determiningthe 40 % degradation of pe
44、rformance. If degradation is in theairflow source, replace or repair the airflow source and con-tinue testing. If degradation is in the motorized nozzle,determine and correct the cause. Replace or repair any part,except the motor in the motorized nozzle, to bring the systemwithin the performance lim
45、its and continue the test.7.11 Judge the end of the test in accordance with Section 3.Express the life in terms of “on” time in hours only.7.12 Calculate an estimate of the population mean in accor-dance with the following procedure:7.12.1 Calculate the sample mean for units tested andconfidence int
46、erval, half-width, as follows:x 51n(i 5 1nxih 5ts=n(1)where:x = mean of sample,n = sample size,xi= life, in hours of “on” time, for each sample tested,h = half-width of confidence interval,t = value from t distribution table for 80 % (t0.90) confi-dence level and degrees of freedom = n 1 (see Table1
47、), ands = standard deviation of sample.7.12.2 Compare the sample mean and confidence intervalhalf-width to determine if a penalty factor is required asfollows:F1601 01 (2011)37.12.2.1 If h # 0.1 x, use x as the published value.7.12.2.2 If h 0.1 x, test additional units to meet confidencelevel or use
48、 the following penalty factor (D):D5h 2 0.1 x (2)Use x D as the published value.8. Precision and Bias8.1 PrecisionAmeaningful statement cannot be made dueto the number of components in the motor, each of which couldconstitute failure of the motor.8.2 BiasA bias statement cannot be applied to this te
49、stmethod as there is no standard reference for comparison.9. Keywords9.1 central vacuum cleaner; durability; motor life; motor-ized nozzleANNEXES(Mandatory Information)A1. DIRT MIXTUREA1.1 Test DirtA1.1.1 Ten grams of the test dirt consists of the following:90 % (wt) 9 g of silica sand310 % (wt) 1 g of unscented commercial grade talcum4A1.2 Analysis of Silica SandSieve Range, U.S. No. Particle Size, m Amount Used, g30/+40 600425 0.940/+50 425300 31.550/+70 300212 41.470/+100 212150 13.5100/+140 150106 2.7A1.3 Analysis of Unscented Comme
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