UL 60335-2-89-2021 pdf download – Household and Similar Electrical Appliances – Safety – Part 2-89: Particular Requirements for Commercial Refrigerating Appliances and Ice-Makers with an Incorporated or Remote Refrigerant Unit or Motor- Compressor.
14 Transient overvoltages This clause of Part 1 is applicable. 15 Moisture resistance This clause of Part 1 is applicable except as follows. 15.2 Addition For appliances which are directly connected to the water supply, the water container, or that part of the appliance which serves as the container, is filled with water as in normal use. The inlet valve is then held open and the filling is continued for5 min afterthe first evidence ofspillage. Where no spillage occurs due to the operation of a device that prevents such spillage, the inlet valve is held open fora further5 min following the operation ofthis device. 15.101 Appliances subject to spillage of liquid from containers on the inside walls of the cabinet or compartment, or on the top of the cabinet, shall be constructed so that such spillage does not affect their electrical insulation. Compliance is checked bythe relevant tests of15.102 and 15.103. 15.102 The apparatus shown in Figure 101 is filled with the solution as specified in 15.2 to the level of the lip. The displacement block is supported just above the water by means of any suitable release mechanism and bridge support. All shelves and containers that can be removed without the use ofa tool are removed and the appliance is disconnected from the supply. Lamp covers are not removed. The apparatus is supported with its base horizontal, and so positioned and at such a height that the water is discharged over the back and side interior walls ofthe cabinet or compartment, including any electrical components mounted thereon, in the most unfavourable manner when the release mechanism is operated. The test is made only once with the apparatus in any one position, but the test may be repeated as many times as necessary in different positions, provided that there is no residual water on parts wetted by a previous test.