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Federal Register / Vol. 86, No. 167 / Wednesday, September 1, 2021 / Proposed Rules
to the particular terminal block wiring system and within 2 percent of the nameplate frequency as specified by the manufacturer.
If the clothes washer has a dual voltage conversion capability, conduct test at the highest voltage specified by the manufacturer.
2.1.2 Supply voltage waveform. For the combined low-power mode testing, maintain the electrical supply voltage waveform indicated in Section 4, Paragraph 4.3.2 of IEC
62301 incorporated by reference; see 430.3. If the power measuring instrument used for testing is unable to measure and record the total harmonic content during the test measurement period, total harmonic content may be measured and recorded immediately before and after the test measurement period.
2.2 Supply water. Maintain the temperature of the hot water supply at the water inlets between 120 F 48.9 C and 125 F 51.7 C. Maintain the temperature of the cold water supply at the water inlets between 55 F 12.8 C and 60 F 15.6 C.
2.3 Water pressure. Maintain the static water pressure at the hot and cold water inlet connection of the clothes washer at 35
pounds per square inch gauge psig 2.5
psig 241.3 kPa 17.2 kPa when the water is flowing.
2.4 Test room temperature. For all clothes washers, maintain the test room ambient air temperature at 75 5 F 23.9 2.8 C for active mode testing and combined low-power mode testing. Do not use the test room ambient air temperature conditions specified in Section 4, Paragraph 4.2 of IEC 62301 for combined low-power mode testing.
2.5 Instrumentation. Perform all test measurements using the following instruments, as appropriate:
2.5.1 Weighing scales.
2.5.1.1 Weighing scale for test cloth. The scale used for weighing test cloth must have a resolution of no larger than 0.2 oz 5.7 g and a maximum error no greater than 0.3
percent of the measured value.
2.5.1.2 Weighing scale for clothes container capacity measurement. The scale used for performing the clothes container capacity measurement must have a resolution no larger than 0.50 lbs 0.23 kg and a maximum error no greater than 0.5 percent of the measured value.
2.5.2 Watt-hour meter. The watt-hour meter used to measure electrical energy consumption must have a resolution no larger than 1 Wh 3.6 kJ and a maximum error no greater than 2 percent of the measured value for any demand greater than 50 Wh 180.0 kJ.
2.5.3 Watt meter. The watt meter used to measure combined low-power mode power
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consumption must comply with the requirements specified in Section 4, Paragraph 4.4 of IEC 62301. If the power measuring instrument used for testing is unable to measure and record the crest factor, power factor, or maximum current ratio during the test measurement period, the crest factor, power factor, and maximum current ratio may be measured and recorded immediately before and after the test measurement period.
2.5.4 Water and air temperature measuring devices. The temperature devices used to measure water and air temperature must have an error no greater than 1 F 0.6
C over the range being measured.
2.5.4.1 Non-reversible temperature indicator labels, adhered to the inside of the clothes container, may be used to confirm that an extra-hot wash temperature greater than or equal to 140 F has been achieved during the wash cycle, under the following conditions. The label must remain waterproof, intact, and adhered to the wash drum throughout an entire wash cycle;
provide consistent maximum temperature readings; and provide repeatable temperature indications sufficient to demonstrate that a wash temperature of greater than or equal to 140 F has been achieved. The label must have been verified to consistently indicate temperature measurements with an accuracy of 1 F. If using a temperature indicator label to test a front-loading clothes washer, adhere the label along the interior surface of the clothes container drum, midway between the front and the back of the drum, adjacent to one of the baffles. If using a temperature indicator label to test a top-loading clothes washer, adhere the label along the interior surface of the clothes container drum, on the vertical portion of the sidewall, as close to the bottom of the container as possible.
2.5.4.2 Submersible temperature loggers placed inside the wash drum may be used to confirm that an extra-hot wash temperature greater than or equal to 140 F has been achieved during the wash cycle, under the following conditions. The submersible temperature logger must have a time resolution of at least 1 data point every 5
seconds and a temperature measurement accuracy of 1 F. Due to the potential for a waterproof capsule to provide a thermal insulating effect, failure to measure a temperature of 140 F does not necessarily indicate the lack of an extra-hot wash temperature. However, such a result would not be conclusive due to the lack of verification of the water temperature requirement, in which case an alternative method must be used to confirm that an extra-hot wash temperature greater than or
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equal to 140 F has been achieved during the wash cycle.
2.5.5 Water meter. A water meter must be installed in both the hot and cold water lines to measure water flow and/or water consumption. The water meters must have a resolution no larger than 0.1 gallons 0.4
liters and a maximum error no greater than 2 percent for the water flow rates being measured. If the volume of hot water for any individual cycle within the energy test cycle is less than 0.1 gallons 0.4 liters, the hot water meter must have a resolution no larger than 0.01 gallons 0.04 liters.
2.5.6 Water pressure gauge. A water pressure gauge must be installed in both the hot and cold water lines to measure water pressure. The water pressure gauges must have a resolution of 1 pound per square inch gauge psig 6.9 kPa and a maximum error no greater than 5 percent of any measured value.
2.6 Bone-dryer. The dryer used for drying the cloth to bone-dry must heat the test cloth load above 210 F 99 C.
2.7 Test cloths. The test cloth material and dimensions must conform to the specifications in appendix J3 to this subpart.
The energy test cloth and the energy stuffer cloths must be clean and must not be used for more than 60 test runs after preconditioning as specified in section 5 of appendix J3 to this subpart. All energy test cloth must be permanently marked identifying the lot number of the material.
Mixed lots of material must not be used for testing a clothes washer. The moisture absorption and retention must be evaluated for each new lot of test cloth using the standard extractor Remaining Moisture Content RMC procedure specified in appendix J3 to this subpart.
2.8 Test Loads.
2.8.1 Test load sizes. Create small and large test loads as defined in Table 5.1 of this appendix based on the clothes container capacity as measured in section 3.1 of this appendix.
2.8.2 Test load composition. Test loads must consist primarily of energy test cloths and no more than five energy stuffer cloths per load to achieve the proper weight.
2.9 Preparation and loading of test loads.
Use the following procedures to prepare and load each test load for testing in section 3 of this appendix.
2.9.1 Test loads for energy and water consumption measurements must be bonedry prior to each test cycle.
2.9.2 Prepare the energy test cloths for loading by grasping them in the center, lifting, and shaking them to hang loosely, as illustrated in Figure 2.9.2 of this appendix.

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