IEC 63169:2020 pdf download

IEC 63169:2020 pdf download.Electrical household and similar cooling and freezing appliances – Food preservation
1 Scope
This document deals with a test to simulate the weight loss of leafy produce, given certain conditions of temperature, humidity and air movement in one or more test zones . The test can only be applied to spaces larger than 200 mm × 150 mm ×100 mm (L × W × H). The aim of the test is to measure the weight loss rate by measuring the weight of a test tray prior to the test and after a given duration. NOTE Weight loss is one of the considerations for shelf life of produce. Other considerations such as condensation will be addressed in future amendments.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 62552-1:2015, Household refrigerating appliances – Characteristics and test methods – Part 1: General requirements IEC 62552-3:2015, Household refrigerating appliances – Characteristics and test methods – Part 3: Energy consumption and volumes
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62552-1:2015 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses:IEC Electropedia: available at http://www.electropedia.org/ ISO Online browsing platform: available at http://www.iso.org/obp 3.1 test zone space inside the refrigeration appliance subject to the weight loss test Note 1 to entry: This space is typically a vegetable drawer or crisper but can also be any other compartment, sub- compartment or convenience feature (see IEC 62552-1:2015, 3.3.1, 3.3.2 and 3.3.3, respectively). The manufacturer shall fully describe any test zones to be tested. Note 2 to entry: Any zone in a refrigerator can be a test zone . A test zone needs to be separated or at least partially sealed from other zones in the same compartment or sub-compartment . 3.2 test tray tray of specific dimensions containing a predefined number of test sheets which is charged with a predefined amount of water Note 1 to entry: Refer to Annex B for 3D printing files. The weight loss test uses one large 18 test sheet test tray per test zone . 3.3 weight loss weight of water lost from the test tray between two moments in time in [g] 3.4 weight loss rate weight loss divided by the time difference between the two moments in time expressed in [g/24h] 3.5 test sheet sheet of the nonwoven fabric specified in Annex A cut to a size of (75 mm × 125 mm) ± 1 mm.
4 Test preparation
4.1 Preparation and handling of test material If the test tray is not directly used after a test series, it should be stored as follows: a) leave the test sheets inside the test tray; b) discard the residual water from the test tray; c) dry the test tray with the test sheets at ambient temperature and low humidity; d) store the test tray loaded with test sheets in the fresh food compartment of a refrigerator in operation. After storage, the test tray can be recharged with water for new tests. Annex A contains provisions for checking the quality of the non-woven fabric. 4.2 Installation and preparation of refrigerating appliance The ambient temperature shall be 25 °C (see A.2.6, A.3.1, A.3.2 and A.4.5 of IEC 62552-1:2015). The ambient humidity shall be in accordance with A.2.3 and A.3.6 of IEC 62552-1:2015. The refrigerating appliance shall be installed in accordance with Annex B of IEC 62552-1:2015. All internal accessories supplied with the refrigerating appliance shall be in their respective positions. See 5.1 in case these accessories interfere with the location of the test tray .