ASTM F922-01(2016)

Standard Test Method for Motor Life Evaluation of an Electric Motorized Nozzle

SIGNIFICANCE AND USE
4.1 The test results provide an indication of the motor life of an electric motorized nozzle. End of motor life will be judged in accordance with Section 3.
SCOPE
1.1 This test method covers the motorized nozzle used with household or commercial vacuum cleaner systems, that is, combination cleaners.  
1.2 This test method provides a test for determining operating motor life in hours by an accelerated laboratory procedure. The motors are tested while mounted and operated in the motorized nozzle.  
1.3 This test method covers only the motorized nozzle. The system used to provide the airflow source is not under consideration.  
1.4 This test method is limited to the determination of motor life for an electrically powered household or commercial motorized nozzle.  
1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.  
1.6 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

• Status: Historical
• Publication Date: 30-Sep-2016
• ICS: 97.080 - Cleaning appliances
• Technical Committee: F11 - Vacuum Cleaners
• Drafting Committee: F11.30 - Durability-Reliability

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: F922 − 01 (Reapproved 2016)
Standard Test Method for
Motor Life Evaluation of an Electric Motorized Nozzle
This standard is issued under the fixed designation F922; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope Removal Effectiveness of Household/Commercial
Vacuum Cleaners
1.1 This test method covers the motorized nozzle used with
F655 Specification for Test Carpets and Pads for Vacuum
household or commercial vacuum cleaner systems, that is,
Cleaner Testing
combination cleaners.
1.2 This test method provides a test for determining oper-
3. Terminology
ating motor life in hours by an accelerated laboratory proce-
3.1 Definitions of Terms Specific to This Standard:
dure. The motors are tested while mounted and operated in the
3.1.1 motor life—limited by failure of the motor. Failure is
motorized nozzle.
motor stoppage.
1.3 This test method covers only the motorized nozzle. The
3.1.1.1 Discussion—Any failure integral with the motor
system used to provide the airflow source is not under such as armature assembly, field assembly, housing(s)
consideration.
bearings, motor cooling fan, carbon brush assemblies, motor-
mounted nonresettable thermal protective devices, or any other
1.4 This test method is limited to the determination of motor
component judged to be integral with the motor shall be judged
life for an electrically powered household or commercial
as motor stoppage.
motorized nozzle.
1.5 The values stated in inch-pound units are to be regarded
4. Significance and Use
as the standard. The values given in parentheses are for
4.1 The test results provide an indication of the motor life of
information only.
an electric motorized nozzle. End of motor life will be judged
1.6 This standard does not purport to address all of the
in accordance with Section 3.
safety concerns, if any, associated with its use. It is the
5. Apparatus and Materials
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5.1 Voltage Regulator System, to control the input voltage to
bility of regulatory limitations prior to use.
the vacuum cleaner. The regulator system shall be capable of
maintaining rated voltage 61 % and rated frequency 61 Hz of
2. Referenced Documents
the motorized nozzle, having a wave form that is essentially
2.1 ASTM Standards: sinusoidal with 3 % maximum harmonic distortion for the
D75 Practice for Sampling Aggregates duration of the test.
E337 Test Method for Measuring Humidity with a Psy-
5.2 Voltmeter, to provide measurements accurate to within
chrometer (the Measurement of Wet- and Dry-Bulb Tem-
61 %.
peratures)
5.3 Timer and Switch, having the capacity to control the
F431 Specification for Air Performance Measurement Ple-
off/on duty cycle of the nozzle and air flow source during the
num Chamber for Vacuum Cleaners
life test.
F608 Test Method for Evaluation of Carpet Embedded Dirt
5.4 Wattmeter, to provide measurements accurate to within
1 %.
This test method is under the jurisdiction of ASTM Committee F11 on Vacuum
5.5 Sharp-Edge Orifice Plate, a 1 ⁄4-in. (32-mm) diameter
Cleaners and is the direct responsibility of Subcommittee F11.30 on Durability-
shall be in accordance with the orifice plate illustrated in
Reliability.
Current edition approved Oct. 1, 2016. Published October 2016. Originally Specification F431.
approved in 1988. Last previous edition approved in 2011 as F922 – 01 (2011).
5.6 Plenum Chamber, conforming to the plenum chamber
DOI: 10.1520/F0922-01R16.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or specifications in Specification F431.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.7 Water Manometer, or equivalent instrument measuring
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. in increments of 0.1 in. (2.54 mm).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F922 − 01 (2016)
5.8 Barometer, with an accuracy of 60.05 in. Hg (1.27 mm reciprocating arm must be at either end of its horizontal motion
Hg), capable of measuring uncorrected barometric pressure at the start of each “on” portion of the cycle. The vacuum
with scale divisions of 0.02 in. (0.51 mm) or finer. cleaner or airflow source shall be stationary and positioned so
that the hose will be submitted to minimum stresses.
5.9 Thermometer, having a range of at least 18 to 80°F (−8
to +27°C) and graduated in 1°F (0.5°C) increments. 5.15 Test Dirt, Wedron sand/talc mixture. See Annex A1.
5.10 Psychrometer, meeting the requirements of Test
6. Sampling
Method E337 with thermometers graduated in increments of
6.1 Test a minimum of three units (or a larger sample size if
1°F (0.5°C).
desired) of similar models using the same motor style and
5.11 Test Carpet, conforming to the level loop carpet as
amperage. Select all samples at random in accordance with
described in Specification F655. A carpet that provides equiva-
good statistical practice. Results shall provide an 80 % confi-
lent nozzle loading results may be used.
dence level within 610 % of the mean value. If not, test
additional samples or reduce the results by the penalty factor as
5.12 Carpet Padding (optional), if used, the test carpet
calculated in 7.12.
padding will conform to the padding described in Specification
F655.
7. Procedure
5.13 Test Cleaner or Airflow Source—The motorized nozzle
7.1 Determine initial performance. The suction of the
motor life evaluation tests shall be conducted using the airflow
cleaner or airflow source with the motorized nozzle attached is
source and voltage resulting from the components which
to be determined to ensure that no leaks develop to reduce load
comprise the combination system with which the motorized
on the nozzle. For the test, the nozzle opening is to be sealed
nozzle is to be used. If used with several systems, the one with
to the ASTM plenum chamber with manometer (or equivalent)
the maximum airflow shall be used.
connected to the chamber, and with the sharp-edge orifice plate
5.13.1 Option—A simulated airflow source and adjusted
in the holder. The motorized nozzle is to have the agitator drive
voltage may be used if they are equal to or exceed the
belt connected and a new filter bag in the cleaner or airflow
combination system with which the motorized nozzle is to be
source. The agitator shall be operating freely with the handle in
used.
operating position as shown in Fig. 1.
5.14 Test Fixture—A moving surface, covered by the test 7.1.1 With the motorized nozzle opening sealed to the
carpet supported on the test pad, which moves with a horizon- plenum chamber and without an orifice plate in the holder,
tal reciprocating motion, for a stroke distance of 27 in. (686 energize the cleaner and motorized nozzle at rated voltage 1 %
mm) in each direction at the average rate of 1.8 ft/s (0.55 mps), and rated frequency 1 Hz for 5 min to stabilize motor
which results in 24 cpm (forward and back). This motion shall temperatures. See 5.13 if an optional airflow source is used.
be generated by rotating a 13.5-in. (343-mm) radius arm that 7.1.2 With the motorized nozzle operating at rated voltage
shall be connected to the platform with an arm at least 24 in. 61 % and rated frequency 61 Hz and the airflow source at the
(610 mm) long or equivalent. This device shall provide means
required voltage, insert the sharp-edge orifice plate into the
to hold the motorized nozzle fixed by its handle stationary in holder on the orifice box, in accordance with 5.5 and 5.6.
the operating position while it is in contact with the recipro-
7.1.3 Record the manometer reading of the combined power
cating surface. nozzle and airflow source as soon as the reading stabilizes.
5.14.1 Option—The motorized nozzle can be moved
7.1.4 Record the wattage of the nozzle on the plenum
through the same cycle as stated in 5.14 while the carpeted chamber. The wattage reading is used to monitor the nozzle
platform is held stationary. See Fig. 1. For either option, the load.
reciprocating motion shall follow the same duty cycle as 7.1.5 Repeat the test, recording the manometer and wattage
specified for the vacuum cleaner or airflow source and motor- reading of the cleaner or airflow source connected only to the
ized nozzle in 7.7. For the optional test fixture of Fig. 1, the plenum chamber.
FIG. 1 Test Fixture
F922 − 01 (2016)
7.1.6 The airflow and wattage reading shall be measured determine if it exceeds the degradation limitation in accordance
every 168 h to determine if some component has failed and with 7.11.1 and 7.11.2.
degraded performance, reducing the load on the nozzle during
7.9 Spread 10 g of the standard dirt mixture (Annex A1) at
the life test. If degradation exceeds 40 %, see 7.10.
the start of the test and once every 24 h of cycling time on the
7.1.7 Monitor the suction at the motorized nozzle daily
test carpet. Spread evenly over the area traversed by the nozzle
during the test, in addition to the weekly measurement on the
opening.
plenum chamber, to maintain loading and to ensure that no
7.10 Test for degradation of performance every 168 h of
mechanical problems exist.
cycling time.
7.2 Use a new section of carpet and padding in accordance
7.10.1 Airflow Loss—In accordance with the procedure in
with 5.11 and 5.12 without holes, tears, or other signs of wear
Annex A2, the suction at the start of the test, 7.1.3, is to be used
when the test is started. Tautly secure the carpet. The lay of the
as the base for determining the 40 % degradation of perfor-
carpet pile shall be such that during the forward stroke the
mance. Measure suction with and without the motorized nozzle
powered nozzle moves in the direction of the lay of the carpet
to ensure degradation is in the motorized nozzle. If degradation
pile. See Fig. 1. Measure the carpet pile height to determine
is in the airflow source, replace or repair the airflow source and
carpet wear in accordance with 7.5.1.
continue test. If degradation is in
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F922 − 01 (Reapproved 2011) F922 − 01 (Reapproved 2016)An American National Standard
Standard Test Method for
Motor Life Evaluation of an Electric Motorized Nozzle
This standard is issued under the fixed designation F922; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers the motorized nozzle used with household or commercial vacuum cleaner systems, that is,
combination cleaners.
1.2 This test method provides a test for determining operating motor life in hours by an accelerated laboratory procedure. The
motors are tested while mounted and operated in the motorized nozzle.
1.3 This test method covers only the motorized nozzle. The system used to provide the airflow source is not under consideration.
1.4 This test method is limited to the determination of motor life for an electrically powered household or commercial motorized
nozzle.
1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information
only.
1.6 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.
2. Referenced Documents
2.1 ASTM Standards:
D75 Practice for Sampling Aggregates
E337 Test Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)
F431 Specification for Air Performance Measurement Plenum Chamber for Vacuum Cleaners
F608 Test Method for Evaluation of Carpet Embedded Dirt Removal Effectiveness of Household/Commercial Vacuum Cleaners
F655 Specification for Test Carpets and Pads for Vacuum Cleaner Testing
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 motor life—limited by failure of the motor. Failure is motor stoppage.
This test method is under the jurisdiction of ASTM Committee F11 on Vacuum Cleaners and is the direct responsibility of Subcommittee F11.30 on Durability-Reliability.
Current edition approved Nov. 1, 2011Oct. 1, 2016. Published March 2012October 2016. Originally approved in 1988. Last previous edition approved in 20062011 as
F922 – 01 (2006).(2011). DOI: 10.1520/F0922-01R11.10.1520/F0922-01R16.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3.1.1.1 Discussion—
Any failure integral with the motor such as armature assembly, field assembly, housing(s) bearings, motor cooling fan, carbon
brush assemblies, motormounted nonresettable thermal protective devices, or any other component judged to be integral with the
motor shall be judged as motor stoppage.
4. Significance and Use
4.1 The test results provide an indication of the motor life of an electric motorized nozzle. End of motor life will be judged in
accordance with Section 3.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F922 − 01 (2016)
5. Apparatus and Materials
5.1 Voltage Regulator System, to control the input voltage to the vacuum cleaner. The regulator system shall be capable of
maintaining rated voltage 61 % and rated frequency 61 Hz of the motorized nozzle, having a wave form that is essentially
sinusoidal with 3 % maximum harmonic distortion for the duration of the test.
5.2 Voltmeter, to provide measurements accurate to within 61 %.
5.3 Timer and Switch, having the capacity to control the off/on duty cycle of the nozzle and air flow source during the life test.
5.4 Wattmeter, to provide measurements accurate to within 1 %.
5.5 Sharp-Edge Orifice Plate, a 1 ⁄4-in. (32-mm) diameter shall be in accordance with the orifice plate illustrated in Specification
F431.
5.6 Plenum Chamber, conforming to the plenum chamber specifications in Specification F431.
5.7 Water Manometer, or equivalent instrument measuring in increments of 0.1 in. (2.54 mm).
5.8 Barometer, with an accuracy of 60.05 in. Hg (1.27 mm Hg), capable of measuring uncorrected barometric pressure with
scale divisions of 0.02 in. (0.51 mm) or finer.
5.9 Thermometer, having a range of at least 18 to 80°F (−8 to +27°C) and graduated in 1°F (0.5°C) increments.
5.10 Psychrometer, meeting the requirements of Test Method E337 with thermometers graduated in increments of 1°F (0.5°C).
5.11 Test Carpet, conforming to the level loop carpet as described in Specification F655. A carpet that provides equivalent
nozzle loading results may be used.
5.12 Carpet Padding (optional),if used, the test carpet padding will conform to the padding described in Specification F655.
5.13 Test Cleaner or Airflow Source—The motorized nozzle motor life evaluation tests shall be conducted using the airflow
source and voltage resulting from the components which comprise the combination system with which the motorized nozzle is to
be used. If used with several systems, the one with the maximum airflow shall be used.
5.13.1 Option—A simulated airflow source and adjusted voltage may be used if they are equal to or exceed the combination
system with which the motorized nozzle is to be used.
5.14 Test Fixture—A moving surface, covered by the test carpet supported on the test pad, which moves with a horizontal
reciprocating motion, for a stroke distance of 27 in. (686 mm) in each direction at the average rate of 1.8 ft/s (0.55 mps), which
results in 24 cpm (forward and back). This motion shall be generated by rotating a 13.5-in. (343-mm) radius arm that shall be
connected to the platform with an arm at least 24 in. (610 mm) long or equivalent. This device shall provide means to hold the
motorized nozzle fixed by its handle stationary in the operating position while it is in contact with the reciprocating surface.
5.14.1 Option—The motorized nozzle can be moved through the same cycle as stated in 5.14 while the carpeted platform is held
stationary. See Fig. 1. For either option, the reciprocating motion shall follow the same duty cycle as specified for the vacuum
cleaner or airflow source and motorized nozzle in 7.7. For the optional test fixture of Fig. 1, the reciprocating arm must be at either
end of its horizontal motion at the start of each “on” portion of the cycle. The vacuum cleaner or airflow source shall be stationary
and positioned so that the hose will be submitted to minimum stresses.
5.15 Test Dirt, Wedron sand/talc mixture. See Annex A1.
FIG. 1 Test Fixture
F922 − 01 (2016)
6. Sampling
6.1 Test a minimum of three units (or a larger sample size if desired) of similar models using the same motor style and
amperage. Select all samples at random in accordance with good statistical practice. Results shall provide an 80 % confidence level
within 610 % of the mean value. If not, test additional samples or reduce the results by the penalty factor as calculated in 7.12.
7. Procedure
7.1 Determine initial performance. The suction of the cleaner or airflow source with the motorized nozzle attached is to be
determined to ensure that no leaks develop to reduce load on the nozzle. For the test, the nozzle opening is to be sealed to the
ASTM plenum chamber with manometer (or equivalent) connected to the chamber, and with the sharp-edge orifice plate in the
holder. The motorized nozzle is to have the agitator drive belt connected and a new filter bag in the cleaner or airflow source. The
agitator shall be operating freely with the handle in operating position as shown in Fig. 1.
7.1.1 With the motorized nozzle opening sealed to the plenum chamber and without an orifice plate in the holder, energize the
cleaner and motorized nozzle at rated voltage 1% 1 % and rated frequency 1 Hz for 5 min to stabilize motor temperatures. See
5.13 if an optional airflow source is used.
7.1.2 With the motorized nozzle operating at rated voltage 61 % and rated frequency 61 Hz and the airflow source at the
required voltage, insert the sharp-edge orifice plate into the holder on the orifice box, in accordance with 5.5 and 5.6.
7.1.3 Record the manometer reading of the combined power nozzle and airflow source as soon as the reading stabilizes.
7.1.4 Record the wattage of the nozzle on the plenum chamber. The wattage reading is used to monitor the nozzle load.
7.1.5 Repeat the test, recording the manometer and wattage reading of the cleaner or airflow source connected only to the
plenum chamber.
7.1.6 The airflow and wattage reading shall be measured every 168 h to determine if some component has failed and degraded
performance, reducing the load on the nozzle during the life test. If degradation exceeds 40 %40 %, see 7.10.
7.1.7 Monitor the suction at the motorized nozzle daily during the test, in addition to the weekly measurement on the plenum
chamber, to maintain loading and to ensure that no mechanical problems exist.
7.2 Use a new section of carpet and padding in accordance with 5.11 and 5.12 without holes, tears, or other signs of wear when
the test is started. Tautly secure the carpet. The lay of the carpet pile shall be such that during the forward stroke the powered nozzle
moves in the direction of the lay of the carpet pile. See Fig. 1. Measure the carpet pile height to determine carpet wear in
accordance with 7.5.1.
7.3 Install the motorized nozzle on the test fixture, as shown in Fig. 1, with the nozzle connected to the airflow source.
7.4 If various settings are provided, set the motor speed, suction regulator, nozzle height, or a combination thereof, in
accordance with the manufacturer’s specified setting for using the nozzle on the level loop test carpet and pad. The setting shall
be the same as that used for Test Method F608.
7.5 Keep the load within limits by controlling changes in the carpet, agitator brush, drive belt, or airflow source or replacing
components as determined in 7.5.1 – 7.5.4.
7.5.1 Replace the carpet w
...