ASTM F884-01(2011)
(Test Method)Standard Test Method for Motor Life Evaluation of a Built-In (Central Vacuum) Vacuum Cleaner
Standard Test Method for Motor Life Evaluation of a Built-In (Central Vacuum) Vacuum Cleaner
SIGNIFICANCE AND USE
The test results provide an indication of the motor life of an electric vacuum cleaner. The end of the motor life will be judged in accordance with Section 3.
SCOPE
1.1 This test method is limited to motor life evaluation of central vacuum cleaners.
1.2 This test method provides a test to determine operating life of the motor, before servicing is needed, by an accelerated laboratory procedure. The motor is tested while mounted and is operated in central vacuum cleaner.
1.3 The values as stated in inch-pound units are to be regarded as the standard. The values in parentheses are for information only.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F884 − 01(Reapproved 2011) An American National Standard
Standard Test Method for
Motor Life Evaluation of a Built-In (Central Vacuum) Vacuum
Cleaner
ThisstandardisissuedunderthefixeddesignationF884;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope assembly, housing(s), bearings, motor cooling fan and primary
air moving fan, or both, brush assemblies, motormounted
1.1 This test method is limited to motor life evaluation of
nonresetable thermal protection devices, or any other compo-
central vacuum cleaners.
nent judged to be integral with the motor, shall be judged as
1.2 This test method provides a test to determine operating
motor stoppage.
life of the motor, before servicing is needed, by an accelerated
4. Significance and Use
laboratoryprocedure.Themotoristestedwhilemountedandis
operated in central vacuum cleaner.
4.1 Thetestresultsprovideanindicationofthemotorlifeof
an electric vacuum cleaner. The end of the motor life will be
1.3 The values as stated in inch-pound units are to be
judged in accordance with Section 3.
regarded as the standard. The values in parentheses are for
information only.
5. Apparatus and Materials
1.4 This standard does not purport to address all of the
5.1 Voltage Regulator System—to control the input voltage
safety concerns, if any, associated with its use. It is the
to the vacuum cleaner. The regulator must be capable of
responsibility of the user of this standard to establish appro-
maintaining the Central Vacuum’s rated voltage 61% and
priate safety and health practices and determine the applica-
rated frequency 61 Hz with a waveform that is essentially
bility of regulatory limitations prior to use.
sinusoidal with 3% maximum harmonic distortion for the
duration of the test.
2. Referenced Documents
5.2 Voltmeter, to provide measurements accurate to within
2.1 ASTM Standards:
61%
E337Test Method for Measuring Humidity with a Psy-
chrometer (the Measurement of Wet- and Dry-Bulb Tem-
5.3 Timer and Switch—The timer and switch shall have the
peratures)
capacity to control the off/on duty cycle of the cleaner during
F431Specification for Air Performance Measurement Ple-
the life test.
num Chamber for Vacuum Cleaners
5.4 Sharp Edge Orifice Plate—The orifice, 0.75 in. (19.05
F608Test Method for Evaluation of Carpet Embedded Dirt
mm) in diameter, shall be in accordance with the figure
Removal Effectiveness of Household/Commercial
illustrating orifice plate detail in Specification F431.
Vacuum Cleaners
5.5 Wattmeter, to provide measurements accurate to within
3. Terminology
1%.
3.1 Definitions of Terms Specific to This Standard:
5.6 Plenum Chamber,in accordance with the plenum cham-
3.1.1 failure—motor stoppage.
ber described in Specification F431.
3.1.2 motor life—limited by the failure of the motor. Any
5.7 Water Manometer, or equivalent instrument measuring
failure integral with motor, such as armature assembly, field
in increments of 0.1 in. (2.54 mm).
5.8 Barometer,withanaccuracyto 60.05in.(1.27mm)Hg,
ThistestmethodisunderthejurisdictionofASTMCommitteeF11onVacuum
capable of measuring uncorrected barometric pressure (test
Cleaners and is the direct responsibility of Subcommittee F11.30 on Durability-
stationpressure)withscaledivision0.02in.(0.51mm)orfiner.
Reliability.
Current edition approved Nov. 1, 2011. Published March 2012. Originally
5.9 Thermometer, having a range from 18 to 80°F (−8 to
approved in 1990. Last previous edition approved in 2006 as F884–01 (2006).
27°C) and graduated in 1°F (0.5°C) increments.
DOI: 10.1520/F0884-01R11.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.10 Psychrometer—The psychrometer shall meet the re-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
quirements ofTest Method E337 with thermometers graduated
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. in increments of 1°F (0.5°C).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F884 − 01 (2011)
5.11 Test Fixture—Anysuitablesurfacethatwillsupportthe specified, replace reusable filters.When a new or cleaned filter
vacuum cleaner in the normal operating position. is placed in the cleaner, check the cleaner on the plenum
chamber for degradation of performance in accordance with
6. Sampling
7.7.1 and 7.7.2.
6.1 Testaminimumofthreeunits(oralargersamplesizeif
7.5 Perform all tests in a controlled ambient atmosphere
desired) of similar models using the same motor style and
with a dry-bulb temperature from 68 to 81°F (20 to 27°C) and
amperage. Select all samples at random in accordance with
a relative humidity of 30 to 50%.
good statistical practice. Results shall provide an 80% confi-
7.6 Operatethecleaneratthevoltagespecifiedin7.1.2from
dence level within 610% of the mean value. If not, test
a remote on/off switch and timer with a duty cycle of 8 min of
additionalsamplesorreducetheresultsbythepenaltyfactoras
operation, followed by 2 min off.
calculated in 7.9.
7.7 Test for degradation of performance every 168 h of
7. Procedures for Motor Life Evaluation
cycling time.
7.1 Determine initial performance as follows:
7.7.1 Performance Degradation—In accordance with the
7.1.1 Connect the manometer (or equivalent) to the plenum
procedure in Annex A1, use the suction at the start of the test
chamber. Install a new filter bag in the test cleaner, if required,
as the base for determining the 40% degradation of perfor-
before conducting performance tests.
mance (see 7.1.4).
7.1.2 Withaminimumlengthof2in.insidediametertubing
7.7.2 If degradation is present, determine and correct the
sealed to the plenum chamber and to the cleaner, and without
cause. Replace any part, except the motor or its integral parts
an orifice plate in the holder, energize the cleaner at its rated
tobringthesystemwithinperformancelimits,andcontinuethe
voltage 61%andratedfrequency 61Hzfor5mintostabilize
test until the motor stops.
motor temperatures. For vacuum cleaners with dual nameplate
7.8 Judge the end of the test in conformity with Section 3.
voltage rating, conduct testing at the highest voltage.
Express life in terms of “on” hours only.
7.1.3 With the cleaner operating at a constant rated voltage,
7.9 Calculate an estimate of the population mean in accor-
insert the 0.75-in. (19.05-mm) diameter sharp-edge orifice into
dance with the following procedure:
the holder on the orifice box.
7.9.1 Calculatesamplemeanforunitstestedandconfidence
7.1.4 Record the suction and input power in that order as
interval half-width.
soon as the manometer reading stabilizes.
7.1.4.1 Take the manometer reading as soon as the manom- n
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