1、Designation: F 1601 01 (Reapproved 2006)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 F 1601; the number immediately following the designation indicates
2、 the 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 (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the motorized nozzle u
3、sed 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 moto
4、rized 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
5、values 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
6、 regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D75 Practice for Sampling AggregatesE 337 Test Method for Measuring Humidity with a Psy-chrometer (the Measurement of Wet- and Dry-Bulb Tem-peratures)F 431 Specification for Air Performance Measurement Ple-num Chamber fo
7、r Vacuum CleanersF 608 Test Method for Evaluation of Carpet Embedded DirtRemoval Effectiveness of Household/Commercial VacuumCleanersF 655 Specification for Test Carpets and Pads for VacuumCleaner Testing3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 motor lifelimited by fail
8、ure of 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 in
9、tegral 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 contro
10、l the input 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
11、measurements 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 VacuumCl
12、eaners and is the direct responsibility of Subcommittee F11.30 on Durability-Reliability.Current edition approved Jan. 1, 2006. Published January 2006. Originallyapproved in 1996. Last previous edition approved in 2001 as F 1601 01.2For referenced ASTM standards, visit the ASTM website, www.astm.org
13、, 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 States.5.5 Sharp Edge
14、 Orifice Plate,witha114-in. (32-mm)diameter and in accordance with the orifice plate illustrated inSpecification F 431.5.6 Plenum Chamber, conforming to the plenum chamberspecifications given in Specification F 431.5.7 Water Manometer, or equivalent instrument, measuringin increments of 0.1 in. (2.5
15、4 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 (0.5C) increments.5.
16、10 Psychrometer, meeting the requirements of TestMethod E 337, with thermometers graduated in increments of1F (0.5C).5.11 Test Carpet, conforming to the specifications for levelloop carpet as described in Specification F 655. A carpet thatprovides equivalent nozzle loading results may be used.5.12 C
17、arpet Padding, conforming to the padding describedin Specification F 655.5.13 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 which the motoriz
18、ed 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.5.14 Text FixtureA
19、 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 begenerated by rot
20、ating 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 motorized nozzles
21、hall 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).5.14.2 For either opti
22、on, 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 Test Dirt, Wedro
23、n 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 %confidence level wi
24、thin 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,is to be determin
25、ed 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 theagitator drive conne
26、cted 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 the cleaner or a
27、irflow 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 FixtureF 1601 01 (2006)27.1.2 With the motorized nozzle and a
28、irflow 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 manometer readin
29、g 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 initial test sequence
30、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 the nozzledurin
31、g 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 carpet and padding
32、 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). Measure the ca
33、rpet 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 pressure drop)
34、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 and pad. The setti
35、ngshall be the same as that used for the cleanability embeddeddirt carpet test in Test Method F 608.7.5 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 Replace the carpet
36、 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 time orif they cea
37、se 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 decreases 40 %
38、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 to 81F (20 to 27
39、C) 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.Operate both th
40、e 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 motorizednozzle initially and
41、 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 mixture (Annex A1)at
42、the 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 degraded, or bo
43、th, 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 performance. If d
44、egradation 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 limits and continu
45、e 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 interval, half-wid
46、th, 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), ands = stand
47、ard deviation of sample.7.12.2 Compare the sample mean and confidence intervalhalf-width to determine if a penalty factor is required asfollows:F 1601 01 (2006)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 the following
48、 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 testmethod as th
49、ere 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 Commercial Grade Tal
