In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them.
ASSE Standard #1007
Issued: 1970
ANSI No. 197.2: 1973
Revised: 1979
Revised: 1986
ANSI Approved: 1992
An American National Standard
A BNeither this Standard, nor any portion thereof, may be reproduced without the written consent of the American Society of Sanitary Engineering.
Although this Standard may be used as a benchmark for in-house evaluation, no product may be said to be A.S.S.E. approved unless the manufacturer has applied to the A.S.S.E., has had his product tested by an official A.S.S.E. recognized independent laboratory, according to the applicable A.S.S.E. Standard, and when the product has passed the test, displays the A.S.S.E. Seal on the product. Instructions for receiving the authorization to display the Seal are available from the A.S.S.E. Central Office.
It is recommended that all devices designed for plumbing systems, especially those which pertain to public health and safety, should be installed consistent with local codes by qualified and trained professionals.
American Society of Sanitary Engineering
Bay Village, Ohio
Copyright © 1992, 1986, 1979, 1973, 1970
All rights reserved.
The development of this sanitation performance standard was prompted by an awareness that public health can be affected by the connection of domestic appliances to the domestic water supply and sanitary drainage systems.
This standard provides a basis for evaluating the adequacy of appliance design and performance to insure sanitary conditions and to protect the public from health hazards that could result from improper design or manufacture.
The performance criteria presented are based on extensive research and broad field experience on protection of the potable water supply and safe discharge of wastes into the sanitary plumbing system. Engineers and technicians representing manufacturers, public health officials, plumbing contractors, inspection agencies and plumbing testing laboratories contributed the technical expertise and experience necessary to develop a meaningful and scientifically sound evaluation method that takes into account conditions that could adversely affect the sanitary performance of these appliances.
While this standard outlines the performance requirements for Plumbing Requirements for Home Laundry Equipment, and describes those performance requirements in terms of methods of testing applicable to all such units, equivalent materials or methods of testing intended to demonstrate compliance with these requirements are also acceptable. Furthermore, whole common design, types and sizes may be defined or stated throughout this document for the basis of standardization with other industry components, other designs, types and sizes which may comply with the intent of the standard may also be submitted.
iiiMr. Richard Prospal
Product Standards Committee Chairman
Reliance Mechanical, Cleveland, Ohio
Mr. Rand Ackroyd
Watts Regulator Company, Lawrence, Massachusetts
Mr. Julius Ballanco
B.O.C.A., Country Club Hills, Illinois
Mr. Robert G. DuPont
State of Wisconsin - DILHR, Madison, Wisconsin
Mr. A. Richard Emmerson
Chicago Faucet Company, Des Plaines, Illinois
Mr. Patrick J. Higgins
P.J. Higgins & Associates, Frederick, Maryland
Mr. Valentine Lehr
Lehr Associates, New York, New York
Mr. Herbert Panzer, P.E.
Warren & Panzer Engineering, New York, New York
Mr. Shabbir Rawalpindiwala
I.A.P.M.O., Walnut, California
Ms. Sally Remedios
Canadian Standards, Rexdale, Ontario, Canada
Mr. James A. Sargent
Kohler Company, Kohler, Wisconsin
Mr. Robert C. Smith
U.S. Testing Company, Tulsa, Oklahoma
Mr. Cliff Storm
Broward County Board of Rules & Appeals, Fort Lauderdale, Florida
J. C. Zambito
Committee Chairman
General Electric
Walter H. Blanck, Jr.
AHAM Staff Representative
Rodger Blyth
Maytag
Richard Conrath
North (Magic Chef)
T. C. Davis
Webster City Products (WCI)
R. S. Hanson
Frigidaire (WCI)
Max Minniear
Mansfield Products (WCI)
R. L. Moore
Webster City Products
Jerry Schorhorst
Whirlpool
Charles R. Waldrop
Norge (Magic Chef)
| Section I | 1 | ||
| 1.0 | Purpose | 1 | |
| Section II | 1 | ||
| 2.0 | Scope | 1 | |
| Section III | 1 | ||
| 3.0 | Definitions | 1 | |
| Section IV | 2 | ||
| 4.0 | General Requirements | 2 | |
| 4.1 | Machine Inspection | 2 | |
| 4.2 | Flushing Means | 2 | |
| 4.3 | Soil Accumulation | 2 | |
| 4.4 | Air Gaps | 2 | |
| 4.5 | Water Supply System | 2 | |
| 4.6 | Nameplate Specifications | 2 | |
| 4.7 | Nameplate Location | 2 | |
| 4.8 | Overflow and Drainage | 2 | |
| 4.9 | Water Control | 2 | |
| Section V | 3 | ||
| 5.0 | Test Procedures | 3 | |
| 5.1 | Installation | 3 | |
| 5.2 | Machine Examination | 3 | |
| 5.3 | Initial Cycle | 3 | |
| 5.4 | Preparation and Test | 3 | |
| 5.5 | Dispensers or Injectors | 4 | |
| 5.6 | Indication of Contamination | 4 | |
| 5.7 | Conditioning | 4 | |
Home Laundry Equipment
The purpose of this standard is to supply manufacturers, plumbing enforcement agencies and others with what are considered reasonable criteria for performance of the appliance when connected to a system of plumbing and the methods of test for determining that performance.
This standard applies to household type automatic and semi-automatic clothes washers, combination washer-dryers, and dryers including those household types that are coin-operated, requiring connection to the potable water supply and discharging into the building plumbing drainage system.
Definitions not found in this section are located in the Plumbing Dictionary, latest edition.
Air Gap (Water Distribution System)
The unobstructed vertical distance through the free atmosphere between the lowest opening of any pipe of faucet supplying water to a tank, plumbing fixture or other device, and the load level rim of the receptacle receiving the water.
Backflow Preventer
A device or means to prevent backflow into the potable water system.
Backflow
The flow of water or other liquids, mixtures or substances into the distributing pipes of a potable supply of water from any source or sources other than its intended source. Back-siphonage is one type of backflow.
Back-Siphonage
The siphoning back of used, contaminated or polluted water or other substances from a plumbing fixture or vessel, or other source, into a water supply pipe due to negative pressure in such a supply pipe.
Dryer
A power-driven machine for drying fabrics by evaporation.
Flood Level
The lowest point in a receptacle from which water overflows.
Washer
A power-driven machine for washing fabrics in water.
1All parts of the potable water supply assembly of the washer, washer-dryer, or dryer through the discharge terminal point of the air gap fitting, or other backflow preventer, shall be of non-toxic, corrosion resistant materials consistent with plumbing practices.
The washer or washer-dryer shall provide a means of flushing all surfaces exposed to wash water so as to remove such water remaining after use of the machine except for that remaining in the sump, discharge conduits and pump.
The washing chamber and all components within it shall be designed to minimize the accumulation of soil. (Exceptions are screens, filters, etc. specifically designed for retention and subsequent removal of soil).
Potable water supplies to the washer, washer-dryer, or dryer shall be protected against contamination by means of air gaps or other acceptable devices. This requirement applies to the supplying of potable water to all accessories such as dispensers and injectors.
The water supply system as supplied with the washer, washer-dryer, or dryer shall be designed to operate without malfunction when connected to a water system at a static pressure of 861.9 kPa (125 p.s.i.) and a temperature of 71°C (160°F). Portions of the system subjected to cold water only shall be tested at 37.8°C (100°F).
The trade name, model designation, identifying numbers, and the manufacturers' or private labelers' address shall be legibly displayed on a permanently affixed nameplate on all washers, washer-dryers and dryers.
The nameplate shall be readily visible after the washer, washer-dryer, or dryer has been installed, in the case of permanently connected washers or washer-dryers, or dryers.
2Any built-in overflow shall direct its discharge to the plumbing drainage system or toward the floor in a manner that results in the flood condition becoming obvious to the operator and that prevents any hazard to the machine or operator.
Water supply system shall not spill, spray or leak where provided by design as a beneficial function.
Before installing or operating the washer, washer-dryer, or dryer, review the installation instructions and operational literature accompanying the unit.
Examine the washer, washer-dryer, or dryer for conformance with 4.1, 4.3, 4.4, 4.6, and 4.7.
Install the washer, washer-dryer, or dryer on a level surface, connected to a water supply and drainage system in accordance with the manufacturers' installation instruction. Operate the machine through a regular cycle with water only for familiarization.
5.3.1 Check for conformance with 4.5 during a normal cycle of operation at a static pressure of 861.9 kPa (125 p.s.i.).
5.3.2 Check for conformance with 4.8 by rendering the water level control device inoperative.
5.3.3 Observe the water supply systems for conformance with 4.9 during all cycles of operation.
The following preparations shall be made for the test prescribed in 5.4.4:
5.4.1 Remove the automatic fill valve closing mechanism (diaphragm, plunger, etc., except for flow washers, if any). If specified by the manufacturer, the automatic fill valve may be bypassed.
5.4.2 Control the water supply to the washer or washer-dryer with a manually operated shut-off valve located upstream of the automatic fill valve.
5.4.3 Fill the unit under test to the flood level, as defined in 3.2, with water and sudsing agent which meet the following specifications.
35.4.3.1 Water:
5.4.3.2 Soap or Detergent:
5.4.4 Test units without clothes load.
5.4.5 Connect a vacuum tank with a minimum capacity of 378.5 L (100 gallons) equipped with a vacuum pump, vacuum gauge and shut-off valve to the inlet side of the water inlet(s). If specified by the manufacturer, the vacuum tank may be connected to the inlet side of the air gap.
5.4.6 After filling in accordance with 5.4.2, operate the washer, or washer-dryer in a regular wash (agitation) cycle and prior to pump out, if that is the next function in the cycle, apply the vacuum, (5.4.7.1) under the following condition(s):
5.4.7 Check for effect of the maximum suds level on the air gap or other protective devices as described below.
When dispensers or injectors are components of the equipment (see 4.4) the tests prescribed in 5.4 are to be applied to the potable water supply systems serving these components.
Any indication that suds or liquids have contaminated the potable water supply systems, or have been forced across the air gap or other protective devices as a result of negative pressure, during the test prescribed in 5.4.4, indicates failure to provide the protection required in 4.4.
It is suggested that a sight glass be used to determine failure. If a sight glass is used, it should be located as near to the inlet of the air gap as possible.
Condition the washer or washer-dryer by operating though at least one regular cycle with water only.
45.7.1 Using the minimum water setting, if any, and the corresponding shortest complete cycle of operation, fill the washer or washer-dryer with warm (approximately 100°F. (37.8°C). water only (no clothes).
5.7.2 Collect a sample of this fill water and determine the quantity of fill water remaining in the tub.
5.7.3 Prepare a solution, 22.2 ml (1 -1/2 level measuring tablespoons) of Key Acid Rubin “R” -#601-014-50 (Keystone Aniline & Chemical Company, Inc., 321 North Loomis Street, 2501 West Fulton, Chicago, Illinois 60612), in 3.78 L (1 gallon) of water.
5.7.4 For each 37.8 L (10 gallons) of fill water remaining in the tub, add 236.8 ml (1 measuring cup) of the Key Acid Rubin “R” solution.
5.7.5 Allow the washer or washer-dryer to proceed through its shortest complete cycle of operation and collect the last 236.6 ml (1 cup) of water discharged. Any visible color difference between the sample of discharge water and the sample of original fill water observed through glass containers when held side-by-side and viewed in ordinary identical light indicates failure of the washer or washer-dryer to be self-cleaning as required in 4.2.
Note: It is recommended that the equipment be discharged to the drainage system indirectly and that the equipment be listed or approved by Underwriters Laboratories, Inc., the American Gas Association, or other electrical testing agencies, as applicable.
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