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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
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This standard was proposed by China National Light Industry Council.
This standard is under the jurisdiction of the National Technical Committee on Household Electrical Appliances of Standardization Administration of China (SAC/TC 46).
Household and Similar Drinking Water Purifier Performance Test Method
1 Scope
This standard specifies the terms and definitions and test methods of household and similar drinking water purifier (hereinafter referred to as "water purifier").
This standard is applicable to the performance test of household and similar drinking water purifier.
2 Normative References
The following referenced documents are indispensable for the application 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.
GB 4706.1 Household and Similar Electrical Appliances - Safety Part 1: General Requirements
GB 5749 Standards for Drinking Water Quality
GB/T 5750 (All Parts) Standard Examination Methods for Drinking Water
GB/T 6682 Water for Analytical Laboratory Use - Specification and Test Methods
GB/T 17218 Hygienic Safety Evaluation for Chemicals Used in Drinking Water Treatment
GB/T 17219 Standard for Safety Evaluation of Equipment and Protective Materials in Drinking Water System
GB/T 22090 Cold and Hot Water Dispenser
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
average influent challenge level
the average concentration of certain substance led into water supply system during purification test
3.2
contaminant liquid
the solution with specific concentration and containing one or several contaminant(s) during purification test
3.3
purification efficiency
the ratio of purified volume by water purifier to contaminant liquid volume during purification test, expressed in %
3.4
concentrated water
the general term for raw water treated by water purifier used for purposes other than domestic drinking water
4 Test Method
4.1 Test Conditions and Equipment
4.1.1 General test conditions
Unless otherwise specified, the test shall be carried out under the following conditions:
a) Ambient temperature: (25±5)℃;
b) Test water temperature: (25±1)℃;
c) Inlet pressure: (0.24±0.02)MPa;
d) Relative humidity: 45%~75%;
e) Water hardness: <450mg/L;
f) The nominal value of power supply voltage provided by the manufacturer shall be adopted;
g) Test shall be carried out in the laboratory with adjustable temperature and free of external hot air flow and thermal radiation action;
h) Water purifier is installed according to the relevant requirements of operation instructions provided by the manufacturer for washing or regeneration of water purifying unit.
4.1.2 Inflow water quality used for test
4.1.2.1 Water purifier:
The water quality of water purifier shall meet the following conditions:
——pH: 7.5±0.5;
——turbidity: <1.0NTU;
——total dissolved solids (TDS): (200~500)mg/L;
——TOC: ≤1.0mg/L.
4.1.2.2 Water softener:
The water quality of water softener shall meet the following conditions:
——hardness: (342±34.2)mg/L(calculated in CaCO3);
——iron: <0.1mg/L;
——pH: 7.5±0.5;
——TDS: (350~500)mg/L;
——turbidity: <1.0NTU;
——sodium: ≤85.5mg/L.
4.1.2.3 Others:
Complying with the municipal tap water requirements in GB 5749 or other centralized water supply requirements.
4.1.3 Main measuring instruments and their requirements:
See Table 1 for measuring instruments and their parameters.
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Table 1 Measuring Instruments and Parameters
Measuring instrument Parameter
Thermometer Precision: ±0.3℃
Ammeter Accuracy: not lower than Grade 0.5
Voltmeter Accuracy: not lower than Grade 0.5
Noise meter Sound level meter of Type 1 or superior
Surface vibration tester Frequency response range: (10~1000)Hz
Relative sensitivity: not exceeding -10%~+20%
Measuring cylinder Precision: not lower than 10mL
Timer Accuracy: ±1s
Pressure gauge Precision: 2%
Extensometer Precision: ±0.01mm
4.2 Visual Inspection
4.2.1 Test conditions
Test conditions for visual inspection shall meet the following requirements:
a) Ambient temperature: (25±5)℃;
b) Relative humidity: 45%~75%;
c) Lighting conditions: 1000lux-1500lux;
d) The uncorrected (corrected) visual acuity of inspection personnel is above 4.5;
e) The inspection surface forms a 45° angle with human eyes;
f) Test distance: 0.5m-0.8m.
4.2.2 Test items
Test items shall cover the following aspects:
a) Inspect the appearance of water purifier;
b) Inspect the surface of exposed structural parts of water purifier;
c) Inspect the coating surface of water purifier;
d) Inspect the decorative coating of electroplated parts and the surface of plastic parts.
4.3 Structural Performance Test
4.3.1 Test instruments
See Figure 1 for devices of circulating pressure test and hydrostatic pressure test. The structural performance test shall be carried out in enclosed and isolated environment to avoid personnel injury or property damage during the test.
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Test Method
4.1 Test Conditions and Equipment
4.2 Visual Inspection
4.3 Structural Performance Test
4.4 Sanitary Safety Test
4.5 Performance Test
4.6 Electrical Safety
Annex A (Informative) Preparation of Contaminant Liquids
