CSA C22 2 NO 53-1968 Electric Washing Machines.pdf

1、C22.2 No. 53-1968(reaffirmed 2014)Electric Washing MachinesLegal Notice for StandardsCanadian Standards Association (operating as “CSA Group”) develops standards through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers rep

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13、is drawn to the possibility that some of the elements of this standard may be the subject of patent rights. CSA Group shall not be held responsible for identifying any or all such patent rights. Users of this standard are expressly advised that determination of the validity of any such patent rights

14、 is entirely their own responsibility.Authorized use of this documentThis document is being provided by CSA Group for informational and non-commercial use only. The user of this document is authorized to do only the following:If this document is in electronic form:sLOADTHISDOCUMENTONTOACOMPUTERFORTH

15、ESOLEPURPOSEOFREVIEWINGITsSEARCHANDBROWSETHISDOCUMENTANDsPRINTTHISDOCUMENTIFITISIN0$ Definitions and General Requirements; Use of Flexible Supply Cords and Fixture Wires with Electric Appliances; Suppressors for Radio Interference: Fractional Horsepower Electric Motors for Other Than Hazardous Locat

16、ions; Industrial Control Equipment for Use in Ordinary (Non-Hazardous) Locations; Cord Sets and Power-Supply Cords; Temperature-Indicating and -Regulating Equip- ment; Lampholders Having Socket Screw-Shells; Integral-Horsepower Electric Motors and Genera- tors for Other Than Hazardous Locations; Sna

17、p Switches; Fuses (Both Plug and Cartridge-Enclosed Types); Specialty Transformers; Lampholders and Control Equipment for Use with Electric Discharge Lamps; Inherent Overheating Protective Devices for Motors; C22.2 No. 1111956 Manually-Operated General-Purpose A-C Switches; C22.2 No. 1121964 Clothes

18、Drying Machines; ASTM * Standard D63563 Method of Test for Flammability of Rigid Plastics Over 0.050 Inch in Thickness. *A merican Society for Testing and Materials. 6 CSA STANDARD C22.2 No. 53 CSA Standards C22.11966 C22.2 No. 01960 C22.2 No. 0.21958 C22.2 No. 81945 C22.2 No. 111957 C22.2 No. 1419

19、66 C22.2 No. 211960 C22.2 No. 241965 C22.2 No. 431965 C22.2 No. 54-1966 C22.2 No. 551957 C22.2 No. 591952 C22.2 No. 661956 C22.2 No. 741954 C22.2 No. 771957 7 C22.2 No. 531968 ELECTRIC WASHING MACHINES 1. SCOPE 1.1 This Standard applies to electrically operated clotheswashing* and dishwashing* machi

20、nes including such washing machines in combination with other devices (such as combination washing and drying machines*) for potentials of 600 volts or less, intended to be used in accordance with the rules of the Canadian Electrical Code, Part I. *For convenience only, the short terms “clothes wash

21、ers“, “dishwashers“ and “washer-dryers“ are used herein. 1.2 This Standard applies to both cord-connected and permanently con- nected machines for use in domestic or commercial locations and includes machines provided with coin- or ticket-operated mechanisms, conventional wringer machines, tumbler,

22、agitator and spinner machines, combination washer-dryers, extractors of the centrifugal type and dishwashing machines of the rack and conveyor type. 1.3 This Standard does not cover dry-cleaning equipment. 2. DEFINITIONS 2.1 The following definitions apply in this Standard: Conventional clothes wash

23、ers means clothes washers which perform only washing and wringing operations; Cord-connected means machines which are connected to the electrical supply by a flexible power supply cord; Permanently connected means machines which are connected to the electrical supply by means of conduit, armoured, o

24、r non-metallic-sheathed cable; Recessed machines means machines which are intended: (a) To be supported by the floor; (b) To rest against a wall in the rear; (c) To rest against a wall, a cabinet, or another appliance on one side; and (d) To rest against a cabinet or another appliance on the other s

25、ide. A counter top may cover the machine and the adjacent cabinets and appliances. A recessed machine is not intended for permanent attachment to the building structure or to adjacent cabinets or appliances; Wall-insert machines means machines which are intended to be permanently attached to the bui

26、lding structure and mounted in a wall or other vertical surface of a building or in a cabinet. 3. GENERAL REQUIREMENTS 3.1 Where reference is made to other publications, such references shall be considered to refer to the latest edition approved by the organization issuing that publication. 8 CSA ST

27、ANDARD C22.2 No. 53 3.2 General requirements applicable to this Standard are given in CSA Standard C22.2 No. 0, Definitions and General Requirements. 3.3 Washing machines in combination with other devices shall be investi- gated also under those additional Standards covering such devices (e.g. washe

28、r-dryers shall comply with this Standard and also with the require- ments of CSA Standard C22.2 No. 112, Clothes-Drying Machines). Where more than one Standard applies preference shall be given to that Standard considered to require the highest minimum standard of construction. 4. CONSTRUCTION 4.1 G

29、eneral 4.1.1 Electric component parts shall be types specifically approved for the use intended, or shall be investigated as an integral part of, and with the equipment. 4.1.2 Electric components and auxiliary electric equipment shall con- form to the particular Standard covering such components and

30、 shall also be suitable for the particular application. 4.1.3 When failure of switches (timer, float, pressure, etc.) or other controls, during normal or improper operation or use, is likely to result in flooding of the equipment, the machine shall meet the requirements of Clause 6.13. 4.2 Enclosure

31、s 4.2.1 General 4.2.1.1 Electrical equipment shall have enclosures of non-com- bustible absorption-resistant material except as permitted by Clauses 4.2.1.2 to 4.2.1.4, which shall enclose all live parts excluding supply cords. Tubs, frames, belt guards etc., shall have the strength and rigidity nec

32、essary to resist the abuses to which they are liable to be subjected without increasing the fire and accident hazard due to loosening or displacement of parts, partial collapse with resulting reduction of spacings, or other serious defects. 4.2.1.2 Unless electrical equipment is otherwise enclosed,

33、the walls and tops of free-standing machines forming an enclosure for live parts shall be of: (a) Noncombustible material; (b) Self-extinguishing plastic composition, as determined by ASTM Standard D635, Method of Test for Flammability of Rigid Plastics over 0.050 inch in Thickness; (c) Combustible

34、material, coated with a suitable fire-retardant paint; or (d) Slow-burning combustible material. Where (d) applies, live parts including wiring shall be spaced not less than 1/2 inches from such material, unless suitable barriers (e.g. metal baffles, wire screens) of noncombustible material are prov

35、ided. 4.2.1.3 The bottom of free standing machines shall be: (a) Of noncombustible material; (b) Of slow-burning combustible material; or (c) Open. ELECTRIC WASHING MACHINES 9 Where (b) or (c) apply, and electrical equipment is not otherwise suit- ably enclosed, provision shall be made to prevent mo

36、lten metal, burning insulation, or the like from falling upon the supporting surface beneath the machine or on the enclosure bottom if tests show that a fire hazard is liable to occur (see Clause 6.10); bare or insulated live parts shall be located at least 2 inches above the level of the lower edge

37、s of the side walls or the enclosure bottom, except that switches, having open contacts, shall be located at least 15 inches above the machine supporting surface or enclosure bottom unless suitable barriers or the equivalent are provided. Where (c) applies, and electrical equipment is not otherwise

38、suitably enclosed, the side walls shall, in addition to the foregoing, extend to within 3 inches of the floor. 4.2.1.4 Recessed machines shall have front panels which comply with the requirements in Clause 4.2.1.2 and enclosure bottoms which comply with the requirements in Clause 4.2.1.3. NOTE: Sinc

39、e recessed machines of the “skeleton“ type may be enclosed by wooden panels on installation, such machines will be judged under the requirements of Clause 4.2.1.2(d). 4.2.1.5 Top and side walls forming enclosures for live parts of machines, shall be firmly held in place by fastening means that requi

40、re the use of a tool for their release. 4.2.1.6 Doors or covers, required to be opened for normal adjust- ment or cleaning, or to gain access to a coin vault, shall not expose bare live parts, except as permitted by Clauses 4.2.2.1 to 4.2.2.3. 4.2.2 Openings in Enclosures 4.2.2.1 Ventilating and oth

41、er openings in external enclosures shall be constructed, located, or baffled so as to prevent a rod, as specified in Clauses 4.2.2.2 and 4.2.2.3, from being inserted to touch bare live parts or coil windings. 4.2.2.2 An opening which will permit a %-inch diameter rod to enter an enclosure, shall not

42、 permit such a rod to contact bare live parts or coil windings within the space indicated by the dimension “X“ in Figure 1. FIGURE 1 PROBE AREAS FOR BARE LIVE PARTS NOTE: “X“ equals five times the diameter of the largest diameter rod which can be inserted through the opening, but not less than 4 inc

43、hes. OPEN/A ENCLOSURE ELE MT/OHS 10 CSA STANDARD C22.2 No. 53 4.2.2.3 An opening which will not permit a 3%-inch diameter rod to enter an enclosure, shall also prevent probes of the dimensions shown in Figure 2 from coming in contact with bare live parts or coil windings. FIGURE 2 PROBE FOR BARI LIV

44、E PARTS Nom: D equals 3% inch when probe is used in judging exposure of bare live parts, and equals 3“2 inch when probe is used in judging exposure of coil windings. 4.2.3 Protection Against Rusting and Corrosion. Iron or steel parts shall be protected against rusting and corrosion in a suitable man

45、ner as re- quired by CSA Standard C22.2 No.0, Definitions and General Requirements. 4.3 Mechanical Assembly 4.3.1 An assembly shall not be adversely affected by vibration, atten- dant on its normal operation. Brush caps, wire connectors, and terminal parts shall be tightly threaded, crimped, or othe

46、rwise secured so as to ensure that there will be no loosening under the most severe conditions of normal use. 4.3.2 Switches, lampholders, or the like shall be mounted securely and shall be positively prevented from rotating in order to prevent straining the terminal connections and the reduction of

47、 spacings required by Clause 4.21.1. Nom: A suitable lockwasher, properly applied, is acceptable as a means to prevent turning of a stem-mounted switch. 4.3.3 A machine shall have sufficient stability such that it will not readily upset in normal use, including the moving of machines having casters

48、or wheels. 4.4 Supply Connections 4.4.1 Permanently Connected Machines 4.4.1.1 Wall-insert machines, recessed machines, and machines which are intended to be permanently connected to a water supply or other pipe work shall have provision for permanent connection to the electrical supply by means of

49、conduit, armoured cable, or non-metallic-sheathed cable, except as permitted in Clause 4.4.1.4. 4.4.1.2 The plate to which conduit or cable is to be attached shall be of steel not less than 0.0418 inch (No. 18 MSG) thick. Terminal boxes or equivalent, including details such as clearance holes for conduit connection, shall comply with the requirements of CSA Standa