UL 982 Figure 30.2 Blender Accessibility Probe For Blender Container Abuse Test
UL 982-Figure 30.2 Blender Accessibility Probe for Blender Container Abuse Test
30.4.4 Blender container abuse
30.4.4.1 A blender container shall not break or crack during normal use.
30.4.4.2 A blender employing a thermoplastic container shall be subjected to the test outlined in 30.4.4.4– 30.4.4.7.
30.4.4.3 A blender employing a glass container shall be subjected to the conditioning and test outlined in 30.4.4.8.
30.4.4.4 To determine if an open top blender container complies with 30.4.4.1, the blender container is to be mounted in the test fixture as described in Figure 30.2. Each sample container, see 30.4.4.6, is then to be subjected to an impact of three ice cubes. While energized, the ice cubes are to be released one at a time until one is consumed, then another ice cube released for a total of three. The container is to be initially dry at room temperature 77 ±3.6°F (25 ±2°C).
30.4.4.5 The ice cubes shall be made in a tray containing 24 oz (700 cm 3 ) of distilled nonaerated water and providing 14 cubes. The ice cubes shall be maintained at a temperature of 32°F (0°C) or less prior to the test. The ice cubes when moved from storage are to be used within 5 minutes.
30.4.4.6 A total of three containers shall be tested as follows:
a) For a multiple speed blender, each container is to be tested at high, medium, and low speeds
(one ice cube per speed).
b) For a two speed blender, two containers are to be used for the high speed and one container for the low speed.
c) For a single speed blender, three containers are to be used.
30.4.4.7 To determine if a closed top thermoplastic blender container or a vacuum blender container without an opening in the cover complies with 30.4.4.1, the blender is to be tested as mentioned in 30.4.4.4 – 30.4.4.6 except that the test fixture shown in Figure 30.2 is not to be used. Instead, the ice cubes are to be placed in the container prior to the blender being energized.
Exception: If the motor stalls, the blender is to be turned off and then back on to free the ice cubes. If stalling continues, 1 oz (30 ml) ofwateris to be added.
30.4.4.8 To determine if a glass blender container complies with 30.4.4.1, open top or closed top, three blender containers shall be conditioned and tested as follows:
a) Each of the glass containers under test shall be lightly abraded with 150 grit silicon carbide
sandpaper. Both the internal and external surfaces shall be scuffed laterally and vertically.
b) After the container is abraded, the entire assembly (container, cutter assembly, jar nut, etc.) shall be assembled and heated until thermal saturation to 55°C (130°F) in either an air-circulating oven or in a hot water bath.
c) The container assembly shall be removed and immediately filled with a mixture of 2 cups ice
cubes and 8 fl oz. alcohol (vodka). Ice cubes must be approximately the size to enclose a 1-inch
(25-mm) cube. The ice cubes and alcohol shall be maintained, separately, at a temperature of -5°C (23°F) or less prior to the test. The ice cubes and alcohol, when moved from storage, are to be used within 5 minutes.
d) The mixture shall be pulsed five (5) times on highest speed. Each pulse shall consist of 3
seconds on followed by 3 seconds off.
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