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(Energy Policy and Conservation Act, Pub. L. 94-163, as amended by Pub. L. 94-385, Pub. L. 95-619; Federal Energy Administration Act of 1974, Pub. L. 93-275, as amended by Pub. L. 94-385; Department of Energy Organization Act, Pub. L. 95-91; E.O. 11790, 39 FR 23185) [43 FR 20120, May 10, 1978, as amended at 44 FR 22418, Apr. 13, 1979. Redesignated and amended at 44 FR 37938, June 29, 1979]

30-032 0-89- ·4

APPENDIX J TO SUBPART B OF PART 430-UNIFORM TEST METHOD FOR MEASURING THE ENERGY CONSUMPTION OF AUTOMATIC AND SEMI-AUTOMATIC CLOTHES WASHERS

1. DEFINITIONS

1.1 "AHAM" means the Association of Home Appliance Manufacturers.

1.2 "Bone-dry" means a condition or a load of test cloth which has been dried in a dryer at maximum temperature for a minimum of 10 minutes, removed and weighed before cool down, and then dried again for 10 minute periods until the final weight change of the load is 1 percent or less.

1.3 "Clothes container" means the compartment within the clothes washer that holds the clothes during the operation of the machine.

1.4 "Compact" refers to a clothes washer which has a clother container capacity of less than 1.6 cubic feet.

1.5 "Deep rinse cycle" refers to a rinse cycle in which the clothes container is filled with water to a selected level and the clothes load is rinsed by agitating it or tumbling it through the water.

1.6 "Front-loader" means a clothes washer which sequentially rotates or tumbles portions of the clothes load above the water level allowing the clothes load to fall freely back into the water. The principal axis of the clothes container is in a horizontal plane and the access to the clothes container is through the front of the machine.

1.7 “HWL-1" refers to the test standard published by the AHAM and titled "American National Standard Z224.1-1971 Performance Evaluation Procedure for Household Clothes Washers," December 1971 designated at HLW-1.

1.8 "HLW-2EC" means AHAM "Test Method for Measuring Energy Consumption on Household Clothes Washers," December 1975, designated as HLW-2EC.

1.9 "Make-up water" means the amount of fresh water needed to supplement the amount of stored water pumped from the external laundry tub back into the clothes washer when the suds-return feature is activated in order to achieve the required water fill level in the clothes washer.

1.10 "Normal cycle" means the cycle recommended by the manufacturer for washing cotton and/or linen clothes.

1.11 "Sensor filled" refers to a type of water fill control which automatically terminates the fill control which automatically terminates the fill when the water reaches an appropriate level in the tub.

1.12 "Spray rinse cycle" refers to a rinse cycle in which water is sprayed onto the clothes load for a definite period of time

without maintaining any specific water level in the clothes container.

1.13 "Standard" refers to a clothes washer which has a clothes container capacity of 1.6 cubic feet or greater.

1.14 "Suds-return" means a feature or option on a clothes washer which causes the stored wash water obtained by utilizing the suds-saver feature to be pumped from the external laundry tub back into the clothes washer.

1.15 Suds-saver" means a feature or option on a clothes washer which allows the user to store used wash water in an external laundry tub for use with subsequent wash loads.

1.16 "Temperature use factor" means the percentage of the total number of washes a user would wash with a particular wash/ rinse temperature setting.

1.17 "Time filled" refers to a type of water fill control which uses a combination of water flow control in conjunction with time to terminate the water fill cycle.

1.18 "Top-loader" means a clothes washer that flexes and oscillates the submerged clothes load through the water by mean of mechanical agitation or other movement. The principal axis of the clothes container is in a vertical plane and the access to the clothes container is through the top of the clothes washer.

2. TESTING CONDITIONS

2.1 Installation. Install the clothes washer in accordance with manufacturer's instructions.

2.2 Electrical energy supply. Maintain the electrical supply to the clothes washer at 120 volts +2 volts. Disconnect all console lights or other lighting systems on the clothes washer which do not consume more than 10 watts during the clothes washer test cycle.

2.3

Water temperature. The temperature of the water supply shall be maintained at 100° F +10° F for all clothes washers not equipped with thermostatically controlled inlet water valves. For clothes washers equipped with thermostatic valves, the temperature of the hot water supply shall be maintained at 140° F ±5° F and the cold water supply shall be maintained at 60° F +5° F. The water meter shall be installed in both the hot and cold water lines to measure water consumption.

2.4 Water pressure. The dynamic water pressure at the hot and cold water inlet connection of the machine shall be equalized at 35 pounds per square inch gauge (psig) ±2.5 psig. The dynamic water pressure for a single water inlet connection shall be maintained at 35 psig ±2.5 psig. The water pressure gauge shall be installed in both the hot and cold water lines to measure water pressure.

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 shall have a range of 0 to a maximum of 30 pounds with a resolution of at least 0.2 ounces and a maximum error no greater than 0.3 percent of any measured value within the range of 3 to 15 pounds.

2.5.1.2 Weighing scale for clothes container capacity measurements. The scale should have a range of 0 to a maximum of 500 pounds with a resolution of 0.50 pounds and a maximum error no greater than 0.5 percent of the measured value.

2.5.2 Watt-hour meter. The watt-hour meter shall have a resolution of no larger than 1 watt-hour and a maximum error no greater than 2 percent of the measured value for any demand greater than 50 watts per hour.

2.5 Thermometer. The thermometer shall have an error no greater than ±1° F over the range of 32° F to 200° F.

2.5.4 Water meter. The water meter shall have a resolution no larger than 0.1 gallons and a maximum error no greater than 2 percent for all water flow rates from 1 to 5 gallons per minute.

2.5.5 Water pressure gauge. The water pressure gauge shall have a resolution of 1 pound per square inch gauge (psig) and shall have an error no greater than 5 percent of any measured value over the range of 32.5 to 37.5 psig.

2.6 Test cloths.

2.6.1 Energy test cloth. The energy test cloth shall be clean and consist of the following:

(a) Pure finished bleached cloth, made with a momie or granite weave, which is 50 percent cotton and 50 percent polyester and weighs 5.75 ounces per square yard and has 65 ends on the warp and 57 picks on the fill. (b) Cloth material that is 24 inches by 36 inches and has been hemmed to 22 inches by 34 inches before washing. The maximum shrinkage after five washes shall not be more than four percent on the length and width.

(c) The number of test runs on the same energy test cloth shall not exceed 25 runs.

2.6.2 Energy stuffer cloths. The energy stuffer cloths shall be made from energy tests cloth material and shall consist of pieces of material that are 12 inches by 12 inches and have been hemmed to 10 inches by 10 inches before washing. The maximum shrinkage after five washes shall not be more than four percent on the length and width. The number of test runs on the same energy stuffer cloth shall not exceed 25 runs.

2.7 Composition of test loads.

2.7.1 Seven pound test load. The seven pound test load shall consist of bone-dry

energy test cloths which weigh 7 pounds ±0.07 pounds. Adjustments to the test load to achieve the proper weight can be made by the use of energy stuffer cloths.

2.7.2 Three pound test load. The three pound test load shall consist of bone-dry energy test cloths which weigh 3 pounds ±0.03 pounds. Adjustments to the test load to achieve the proper weight can be made by the use of energy stuffer cloths. 2.8 Use of test loads.

2.8.1 Top-loader clothes washer. The toploader clothes washer shall be tested without a test load.

2.8.2 Front-loader clothes washer.

2.8.2.1 Standard size front-loader clothes washer. When the maximum water fill level is being tested, the test load shall be seven pounds as described in 2.7.1. When the minimum water fill level is being tested, the test load shall be three pounds as described in 2.7.2.

2.8.2.2 Compact size front-loader clothes washer. When either the maximum or minimum fill levels are being tested, the test load shall be three pounds as described in 2.7.2.

2.8.3 Method of loading. Load the energy test cloths by grasping them in the center, shaking them to hang loosely and then dropping them into the clothes container prior to activating the clothes washer.

2.9 Preconditioning. If the clothes washer has not previously been tested nor filled with water in the preceding 96 hours, precondition it by running it through a cold rinse cycle and then draining it to insure that the hose, pump, and sump are filled with water.

2.10 Clothes washer setting. Set the wash time for approximately 10 minutes, but the actual wash time (period of agitation) shall not be less than 9.75 minutes. Where controls are provided for agitation and spin speed, set them for the normal cycle.

3. TEST MEASUREMENTS

3.1 Clothes container capacity. Measure the entire volume which a dry clothes load could occupy within the clothes container, according to the procedures described in 3.1.1 and 3.1.2.

3.1.1 Top-loaders clothes washers. Line the clothes container with 2 mil plastic sheet or use some other method to prevent the water from entering the outer tub container. The agitator shall be in place. Fill the clothes container with water to its uppermost edge, (This filling procedure may require overriding of the fill level control, or manually completing the fill to the top of the container after the fill sensor terminates the fill at maximum level.) Record the weight of the machine before filling it with water and then after filling it with water.

The clothes container capacity is calculated as follows:

C=W/d.

C=Capacity in cubic feet. W=Mass of water in pounds. d=Density of water at the measured temperature in pounds per cubic foot (at 140° F).

3.1.2 Front-loader clothes washer. Position the tub and shaft axis vertically with the shaft downward. Line the clothes container with 2 mil plastic sheet or use some other method to prevent the water from entering the outer tub container. The agitator shall be in place. Fill the clothes container with water to its uppermost edge. (This filling procedure may require overriding of the fill level control, or manually completing the fill to the top of the container after the fill sensor terminates the fill at maximum level.) Record the weight of the machine before filling it with water and then after filling it with water. The clothes container capacity is calculate as follows:

C=W/d

C=Capacity in cubic feet.

W = Mass of water in pounds. d=Density of water at the measured temperature in pounds per cubic foot (at 140° F).

3.2 Test cycle. Establish the testing conditions set forth in 2 of this Appendix.

3.2.1 Per-cycle electrical energy consumption. Set the water level selector at a maximum fill and insert the appropriate test load, if applicable. Activate the normal cycle of the clothes washer and also any sudssaver switch.

3.2.1.1 Measure the electrical energy consumption of the clothes washer for a complete normal cycle.

3.2.2 Hot water

consumption for a normal cycle with the water level selector at maximum fill.

3.2.2.1 Set the water level selector at maximum fill and insert the appropriate test load, if applicable. Activate the normal cycle of the clothes washer and also any suds-saver switch.

3.2.2.2 For automatic clothes washers set the wash/rinse temperature selector to the hottest setting available (hot/warm). For semi-automatic clothes washers open the hot water faucet valve completely and close the cold water faucet valve to achieve the hottest setting (hot/hot).

3.2.2.3 Measure the number of gallons of hot water used to fill the tub for the wash cycle.

3.2.2.4 Measure the total number of gallons of hot water used for all deep rinse cycles.

3.2.2.5 Measure the total gallons of hot water used for all spray rinse cycles.

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3.2.2.7 Set the suds-saver switch to activate the sud-return. Repeat 3.2.2.2 to 3.2.2.5 for a warm/cold temperature setting.

3.2.3 Hot water consumption for a normal cycle with the water level selector at minimum fill. Set the water level selector at minimum fill and insert the appropriate test load, if applicable. Activate the normal cycle of the clothes washer and also any sudssaver switch. Repeat 3.2.2.2 through 3.2.2.7. 3.2.4 Hot water consumption for clothes washers that incorporate a partial fill during the rinse cycle. Where the procedures in 3.2.2 and 3.2.3 cannot be used for clothes washers that incorporate a partial fill during the rinse cycle, activate any sudssaver switch and operate the cloths washer for the complete normal cycle at both the maximum water fill level and the minimum water fill level for each of the wash/rinse temperature selections available that use hot water. Measure the total hot water consumed during the complete normal cycle.

3.3 Data recording. Record for each test cycle in 3.2.

3.3.1 Total the kilowatt-hours of electrical energy, ME, consumed during the test to operate the clothes washer in 3.2.1.

3.3.2 Total the hot water measured at maximum fill level for each wash/rinse temperature selection, V1, excluding any fresh make-up water required to complete the fill during a suds-return cycle.

3.3.3 Total the hot water measured at minimum fill level for each wash/rinse temperature selection, V,, excluding any fresh make-up water required to complete the fill during a suds-return cycle.

3.3.4 Total the hot water measured at maximum fill for the suds-return cycle, SH. 3.3.5 Total the hot water measured at minimum fill for suds-return cycle, SL.

4. CALCULATION OF DERIVED RESULTS FROM TEST MEASUREMENTS

4.1 Per-cycle temperature-weighted hot water consumption for maximum and mini

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