UL 430:2015 pdf download – Waste Disposers.
7.3.3 The probes specified in 7.3.1 and 7.3.2 and illustrated in Figures 7.2 — 7.4 shall be applied to any deplh that the opening permits, and shall be rotated ot angled before, during, and alter insertion through the opening to any position that is necessary to examine the enclosure. The probes illustrated in Figures 7.2 and 7.4 shall be applied in any possible configuration, and, it necessary, the configuration shall be changed after insertion through the opening.
7.3.4 The probes specified in 7.33 and 7.3.5 shall be used as measuring instruments to determine the accessibility provided by an opening, and not as instruments to determine the strength of a material- The probes shall be applied with the minimum force necessary to determine compliance.
7.3.5 With reference to 7.3.1 and 7.3.2, the minor dimension of an opening is the diameter of the largest cylindrical probe having a hemisphencal tip that can be inserted through the opening.
7.3.6 With reference to 7.3.2, a directly accessible motor is a motor:
a) That can be contacted without opening or removing any part or
b) That is located so as to be accessible to contact.
7.37 During the examination of a disposer to determine compliance with 7.3.1 or 7.3.2, a part of the enclosure that can be opened or removed by the user without using a tool (to attach an accessory, to make an operating adjustment, or tor other reasons) is to be opened or removed.
7.3.8 With reference to 7,3.1 and 7.3,2, insulated brush caps are not required to be additionally enclosed.
8 Polymeric Materials
8.1 A polymeric matenal used as a part of a disposer shall comply with the applicable requirements in the Standard for Polymeric Materials – Use in Electrical Equipment Evaluations, UL 746C, and with the requirements for polymeric materials specified in Sections 48 — 58.
Exception: A material need not comply with the requirements for enclosures, direct contact with current-carrying parts, or other requirements for functional parts if a complete or partial deterioration or breakage of the part does not adversely affect compliance with any other requirement En the standard. In such cases, the material shall comply with the requirements applicable to decorative parts.
8.2 When determining compliance with 8.1, a disposer shall be investigated as:
a) A fixed appliance if it is intended to be permanently connected electrically or sink-mounted; or
b) A stationary appliance if it is cord-connected and intended to be fastened in place or located in a dedicated space.
8.3 A material used in a part that contacts water or food waste during normal operation, including water and food waste from a dishwasher, shall be investigated on the basis of operating at temperatures not less than 82°C (180°F) unless measured temperatures on a polymeric part, obtained in accordance with the method described in 8.4, are less.
8.4 The disposer is to be connected to a power supply as specified in 33.2. Thermocouples are to be placed on the outside of the polymeric parts that contact water or food waste during normal operation. The disposer is to be operated while water is run through the top of the disposer for 20 minutes. The water is to be at a temperature of 180°F (82°C) and run at a rate of 2.2 See 39.3 — 39.5.
8.5 A material that attains temperatures greater than 50°C (122°F) during the Temperature Test, Section
39. including those described in 8.3, shall have a relative thermal index or other temperature rating for the application In accordance with the Standard for Polymeric Malenals — Long Term Property Evaluations, UL 746B,
8.6 A polymeric material of a disposer shall be resistant to thermal degradation at the maximum
temperature to which it is exposed during intended use and shall comply with Thermal-Aging Test, Section 56.
8.7 If the deterioration of a polymeric material results in a risk of fire, electric shock, or inqury to persons, the material shall be resistant to solutions to which it is exposed during intended use and shall comply with Long Term Exposure Tests, Section 57.