### '· 

# I

To: Bryan Berringer, phil.manthei, topping.r, rivest.m, dieckmann.j, murphy.william, "Morris, Wayne E.", "Wethje, L cc: "AHAMST AFF" Subject: Clothes Washer Proposed Test Procedure Language

Attached are 3 files as follows: 1. Proposed language from DOE re the test cloth requirements as · · distributed by Bryan Berringer on 3/3/00 2. Proposed language from Dave Modtland of Frigidaire re the test cloth preconditioning, as follow up from last AHAM Specialists conference call 3. Proposed language for revisions to DOE test procedures J 

### & Jl from previous ·AHAM Specialists conference calls We need to reconcile the proposed differences between 1 and 

### 2 so that we can provide draft language to be included in the clothes washer rulemaking negotiations next week. We should also discuss the 4% shrinkage issue. 

### I'm suggesting we have a conference call on Monday afternoon, 3/13/0d at 3:00 p.m eastern time. At this point I think it would be good if industry, gov't and contractors all participate. Sorry for the late notice. We can use the AHAM bridge by calling 202-872-5955 ext. 519 Please reply and let me know if you can participate. Thanks, Larry Wethje Vice President Eng. Services AHAM 1111 19th St., NW, Suite 402 Washington, DC 20036 phone: 202-872-5955 fax: 202-872-9354

# I RTI'.J

- cwDOEpro.doc

# I~

# - cwDMpro.doc 

# 1

1001 

# M

- cwTPmod.doc1.1 Draft Standard Language 

### Replace the current Section 2.6 in Appendix JI with:

12.6 

### Test Cloths. 2.(>.1 

### Energy Test Cloth. 

### The energy test cloth shall be made from energy test cloth material, as specified in 2.6.4, that is 24 inches by 36 inches (61.0 cm by 91 .4 cm) and has been hemmed to 22 inches by 34 inches (55.9 cm by 86.4 cm) before washing. The maximum shrinkage after five washes shall not be more than four 

### percent on the length and width. The number oftest runs on the same energy test cloths shall not exceed 25 

### runs. 2.6.2 

### EnergySt1!ffer 

### Cloth. 

### The energy stuffer cloth shall be made from energy test cloth material, as specified in 2.6.4, and shall consist ofpieces of material that are 12 inches by 12 

### inches (30.5 cm by 30.5 cm) and have been hemmed to 10 inches by 10 inches (25.4 cm by 25.4 cm) 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 cloths shall not exceed 25 runs. 2.6.3 Preconditioning(!!"Test 

### Cloths. 

### The new test cloths, including energy test cloths and energy stuffer cloths, shall be pre-conditioned in a clothes washer in the following manner: 2.6.J. I 

### Wash the test cloth using a commercially available "clothes washing detergent that is suitable for 135°F (57.2°C) wash water as recommended by the manufacturer, with the washer set on maximum water level. Place detergent in washer and then place the new load to be conditioned in the washer. Wash the load for ten minutes in soft water ( l7ppm or less). Wash water is to be hot, and controlled at 135°F±5°F (57.2°C±2.8°C). Rinse watertemperature is to be cold, and controlled at 60°F± 5° F (15.6°C±2.8°C). Rinse the load through a second rinse using the same water temperature (ifan optional second rinse is available on the clothes washer, use it). 2.6.3.2. Dry the Load 2.6.3.3 A

### final cycle is to be hot water wash with no detergent followed by two cold waterrinses 2.6.3.4 Dry

### the Load 

### 2.6.4 EneJ'f::, 1

### Y Test ClothMaterial. The energy test cloths and energy stuffer cloths shall be made from fabric meeting the following specifications. 2.6.4.1 NominalFabric 

### Type.· Pure finished bleached cloth, made with a momie or granite weave, which is nominally 

### SO percent cotton and 50 percent polyester. 2.6.4.2 The fabric weight shall be 5.60 ounces per square yard (190.0 g/m2), 

### ± 5%. 2.6.4.3 The thread count shall be 61 x 54 per inch (warp xfill), ± 2%. 2.6.4.4 The warp yarn and filling yarn shall each have fiber content of50 percent ± 4 percent cotton, with the balance being polyester, and be open end spun, I

### 5/I 

### ± 5% cotton count blended yarn.

12.6.4.5 Water repellent finishes, such as fluoropolymer stain resistant finishes · shall not be applied to the test cloth. The absence ofsuch finishes can be/shall be verified by: 2.6.4.5.1 AATCC-118 Oil Repellency Test (DuPont or 3M version) ofeach new lot oftest cloth (when purchased from the mill) to confirm the absence ofScotchguard or other water repellent finish (required scores of

### "D'' across the board) 2.6.4.5.2 AATCC-79 Drop Absorbency Test ofeach new lot oftest cloth (when purchased from the mill) to confirm the absence ofScotchguard or otherwater repellent finish (time to absorb one drop should be on the order of 1second) 2.6.4.6 The moisture absorption and retention shall be evaluated by the StandardExtractor RMC Test specified in 2.6.5. 2.6.4.6.1 Repeat the Standard Extractor RMC Test 2.6.5 three times.


### 2.6.5 StandardEx:tractor

### RMC Jest Procedure. 2.6.5.1 The standard extractor RMC tests shall be run in a BockModel extractorwith a variable speed drive. 

### 2.6.5.2 Test l,oad. Test cloths shall be preconditioned in accordance with 2.6.3. The load size shall be 8.4 lbs 

### 2. 6.

### 5.3Procedure 2.6.5.3.1 Record the bone-dry weight, WI, ofthe test load. 2.6.5.3.2 Soak the test load for 20 minutes in I0 gal ofsoft (

### < 1 7ppm) water. The water temperature shall be l00°F 

### ± 5°F. 2.6.5.3.·3 Remove the test load and allow waterto gravity drain offofthe test cloths. Then manually place the test cloths in thebasket ofthe extractor, distributing them evenly by eye. Spin the load at a fixed speed corresponding to the intended g level 

### ± l g for the intended time period 

### ± 5 seconds. 2.6.5.3.4 Record the moist weight, WC, immediately at the completion of the spin. 2.6.5.3.5 Calculatethe RMC as (WC-Wl)/Wl. 2.6.5.3.6 TheRMC ofthe test load shall be measured at three (3) g levels: 50 g, 200, 350g, using two different spin times at each g level: 4 minutes, and 15 minutes 2.6.5.4 Repeat 2.6.5.3 using soft (<17 ppm) water at 60F 

### ± 5 F. 2. 7 Calculation

## <!!RMC correction curve. 2.7. 1 Perform a linear least-squares 

### fit to relate the standard RMC (RMCstandard) values (shown in table 2.7. 1) to the values measured in 2.6.4.6 (RMCc10111): 

### RMC.,wndard**~**

### A 

## *RMCc101h 

### +B

2

### Where Aand Bare coefficients ofthe linear least squares fit. 2.7.2 Check accuracy oflinear least squares fit 

### using the following method: Ifthe root mean square value of:

where Nis the. number ofdistinct tests (9). where a sum is taken over all ofthe different tests, where RMCsr,1.VDAJW_i 

### is the RMC standard value for the i-th test, and R.MCcwm- i 

### is the average measured 

### RMC value for the i-th cloth test. 2.8 ·Application <?f 

### RMCcorrection curve. 

### 2.8.1 Using the coefficients, A&B calculated in 2.7. I. 

### RMC.,01,. 

### =A

## * RMC 

### + B 2.8.2 Substitute RMCcorr values in calculations in Section 3.8.

355.8'% 52.8% ·------------+--- -----

______ .:\(_J._'J'_%

__ --+
____ _l_8.(1% 

## ---1--- 43.5%

----**_:2_l)_.(~y....._**____________**___:,:~_.()_'!f._,,**__**~**___='().lJ'% _J_

__ 3() 1% Note: Numbers shO\rn arc preliminary.

1

# IIFRIGIDAIRE HOME PRODUCTS



### March 7, 2000 Larry Wethje VP, Engineering Services AHAM 1111 191 h 

### Street, NW Washington, DC 20036 LaundryProducts 400 Des Moines Street WebsterCity, IA 50595-1407 Phone 515 832 5334

FAX 515 832 6988



### Re: Clothes Washer Test Procedure
- Pre-conditioning ofthe Test Cloth Dear Larry, The following is the subject re-write based on the discussion during the conference call of February 23, 2000: Revise 2.6. 1. 1 "The energy test cloth shall not be used for more than 25 test runs (after pre-conditioning) and shall be clean and consist ofthe following:

... " Replace 2.6. 1.2.1with the following: "Place the test cloth in a clothes washer set at the maximum water level. Wash the load for ten minutes in soft water (17 ppm hardness or less) using 6.0 grams per gallon ofwater ofAHAM Standard detergent 

### 2A The wash temperature is to be controlled to 135°

## .± 5° F (57.2° .:t_:2.8° C) and the rinse temperature is to be controlled to 60°

## .± 5° F (15.6°

## .± 2.8° C). Repeat the cycle with detergent and then repeat the cycle three additional times without detergent drying the load between cycles (total offive wash cycles)." Revise 2.6.2 to clarify: 

### "Energy stuffercloth. The energy stuffer cloth

... The number oftest runs on the same energy stuffer cloth shall not exceed 25 runs (after preconditioning)." Please forward to the Test Procedure Task Force members. Contact me for clarification and/or if additional assistance is required. Sincerely, David 

### B. Modtland Manager
- Washer Engineering

Major Appliances Lawn & Garden Frigidaire•Tappan•White-Westinghouse•Gibson• Kelvinator Poulan •Weed Eater• PoulanPro

### ------

----- --



### AHA!VI Proposed Changes to DOE Test Procedures 

### J & Jl 

### I. For the

## JTest Procedure: A. Re-title Section 2.3 as "Suppzv Water Requirements.for Water andEnergy Consumption Testing". B. Add a Section immediately following Section 2.3 which reads: "Supply Wmer Requirementsfor RA1C Testing. For nonwater-heating clothes washers not equipped with thermostatically controlled water valves. the temperature c>f"the hotwatersupply shall be maintainedat I40F±_51"andthe co.Idwatersupplyshall be maintainedat60F

### ± 5F Allother clothe.\' washers shall be connectedto watersupply temperatures as statedin Section
') ., " L.J. C. Add the following definitions for "cold rinse" and "warm rinse" in Section 3.3.1: "ColdRinse is the coldest rinse temperature available on the machine. Warm Rinse is the hottest rinse· tempemture available on the machine. ·· Note: ln Appendix J, these definitions should not be added in the general definition section because there arc other sections in the test procedure referring to cold and wam1 rinses in which the definitions do not apply. D. Re,·ise Section 2: 10 as follows: ··Wash tin1e (period r!fagitation or tumble) setting. !ft he maximum available wash time in the normal**c~vc/e** is greater than 9. 75 minutes, the wash time shall he not less than 9. 75 minutes. (f the maxinn111i available wash time in the normal cycle is less them 9. 75 minutes, the wash time shcill he the maximum available wash time

.... E. ReYisc Section 2.1 L, Agitation and Spin Speed Settings, by adding the word "speed"just afterthe word "agitation"- F. Revise Section 2.11.1 by changing the word "levels" to "speed".


### 11. For the

# J!. TestProcedure: A. Add the following definitions to Section 1.0: "'Cold rinse means the coldest rinse temperature available on the machine (andshouldhe the same rinse temperature selection testedin Section3. 7)

. .. "Warm rinse means the ho/lest rinse temperature available on the machine (andshouldbe the 

### same rinse temperature selection testedin Section 3. 

### 7)

. ... B. In Section 4.1.5, for the variables 

### ERx, ERa, and 

### ER0 , add the words "perdefinitions in Section 

### 3. 

### 7.2" after the \vord "cycle". Larry Wethje, 3/I0/00