ASTM F884-96
(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
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.
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Designation: F 884 – 96
Standard Test Method for
Motor Life Evaluation of a Built-In (Central Vacuum) Vacuum
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Cleaner
This standard is issued under the fixed designation F 884; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
1.1 This test method is limited to motor life evaluation of 4.1 The test results provide an indication of the motor life of
central vacuum cleaners. an electric vacuum cleaner in operating life. The end of the
1.2 This test method provides a test to determine operating motor life will be judged in accordance with Section 3.
life of the motor, before servicing is needed, by an accelerated
5. Apparatus and Materials
laboratory procedure. The motor is tested while mounted and is
5.1 Voltage Regulator—The regulator must be capable of
operated in central vacuum cleaner.
1.3 The values as stated in inch-pound units are to be maintaining 120 6 2 V rms with a waveform that is essentially
sinusoidal with 3 % maximum harmonic distortion for the
regarded as the standard. The values in parentheses are for
information only. duration of the test.
5.2 Voltmeter, to provide measurements accurate to within6
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 1%
5.3 Timer and Switch—The timer and switch will have the
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- capacity to control off/on duty cycle of the cleaner during the
life test.
bility of regulatory limitations prior to use.
5.4 Sharp Edge Orifice Plate—The orifice, 0.75 in. (19.05
2. Referenced Documents
mm) in diameter, shall be in accordance with the figure
2.1 ASTM Standards: illustrating orifice plate detail in Specification F 431.
E 337 Test Method for Measuring Humidity with a Psy- 5.5 Wattmeter, to provide measurements accurate to within
chrometer (the Measurement of Wet- and Dry-Bulb Tem- 1%.
2
peratures) 5.6 Plenum Chamber, in accordance with the plenum cham-
F 431 Specification for Air Performance Measurement Ple- ber described in Specification F 431.
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num Chamber for Vacuum Cleaners 5.7 Water Manometer, or equivalent instrument measuring
F 608 Test Method for Evaluation of Carpet-Embedded Dirt in increments of 0.1 in. (2.54 mm).
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Removal Effectiveness of Household Vacuum Cleaners 5.8 Barometer, with an accuracy to 60.05 in. (1.27 mm)
Hg, capable of measuring uncorrected barometric pressure (test
3. Terminology
station pressure) with scale division 0.02 in. (0.51 mm) or finer.
3.1 Definitions of Terms Specific to This Standard: 5.9 Thermometer, having a range from 18 to 80°F (−8 to
3.1.1 failure—motor stoppage.
27°C) and graduated in 1°F (0.5°C) increments.
3.1.2 motor life—limited by the failure of the motor. Any 5.10 Psychrometer—The psychrometer shall meet the re-
failure integral with motor, such as armature assembly, field
quirements of Test Method E 337 with thermometers graduated
assembly, housing(s), bearings, motor cooling fan and primary in increments of 1°F (0.5°C).
air moving fan, or both, brush assemblies, motormounted
5.11 Test Fixture—Any suitable surface that will support the
nonresetable thermal protection devices, or any other compo- vacuum cleaner in the normal operating position.
nent judged to be integral with the motor, shall be judged as
6. Sampling
motor stoppage.
6.1 Test a minimum of three units (or a larger sample size if
desired) of any model. Select all samples at random in
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This test method is under the jurisdiction of ASTM Committee F-11 on Vacuum
accordance with good statistical practice. Results shall provide
Cleaners and is the direct responsibility of Subcommittee F11.30 on Durability-
Reliability.
Current edition approved March 10, 1996. Published May 1996. Originally
published as F 884 – 90. Last previous edition F 884 – 90.
2
Annual Book of ASTM Standards, Vol 11.03.
3
Annual Book of ASTM Standards, Vol 15.07.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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F 884
an 80 % confidence level within 610 % of the mean value. If 7.5 Perform all tests in a controlled ambient atmosphere
not, test additional samples or reduce the results by the penalty with a dry-bulb temperature from 68 to 81°F (20 to 27°C) and
factor as calculated in 7.9.
a relative humidity of 30 to 50 %.
7.6 Operate the cleaner at the voltage specified in 7.1.2 from
7. Procedures for Motor Life Evaluation
a remote on/off switch and timer with a duty cycle of 8
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