National Standard of the People's Republic of China - Room Air Conditioner
Policy specification date: 2005-3-18
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This standard is not equivalent to ISO 5151-94 "Air conditioner without duct" Testing and determination of heat pumps.
1 Subject content and scope of application
This standard specifies the terminology, product classification, technical requirements, testing, inspection rules, marking, packaging, transportation, storage, etc. of room air conditioners . This standard applies to household and similar room air conditioners that use air-cooled condensers, fully enclosed motor-compressors, and a cooling capacity of less than 14,000W to create a comfortable indoor environment.
2 Reference standards
GB l91 — 90 Pictorial marks for packaging, storage and transportation
GB l019 — 89 General principles for packaging of household appliances
GB /T 2423.3 — 93 Basic Environmental Testing Procedures for Electrical and Electronic Products Test Ca: Constant Humid Heat Test Method
GB/T 2423.17 — 93 Basic Environmental Testing Procedures for Electrical and Electronic Products Test Ka; Salt Spray Test Method
GB 2828-87 Batch-by-batch inspection and counting sampling procedures and sampling tables (applicable to continuous batch inspections)
GB 2829-37 Periodic inspection and counting sampling procedures and sampling tables (applicable to production process stability Inspection)
GB 4706.32 — 1996 Special requirements for the safety of heat pumps, air conditioners and dehumidifiers for household and similar electrical appliances
GB 4798.1 — 86 Storage of electrical and electronic products under application environmental conditions
GB 4798.2 — 84 Transportation of electrical and electronic products under application environmental conditions
GB 5296.2 — 87 Instructions for use of consumer products Instructions for use of household and similar electrical appliances
3 Terminology
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3.1 Room Air Conditioner
A device that supplies treated air directly to a confined space, room, or area. It mainly includes a refrigeration system for refrigeration and dehumidification as well as air circulation and purification devices. It can also include heating and ventilation devices (which can be assembled in a box or designed to be used together as a component system), hereinafter referred to as air conditioners.
3.2 Heat Pump
A refrigeration system that heats the indoor air by converting the flow direction of the refrigerant in the refrigeration system, absorbing heat from the low-temperature outdoor air and releasing it indoors, and can also include air circulation , purification device and humidification and ventilation device.
3.3 Electric heating devices for heating
Electric heating devices that only use electric heating methods and temperature switches (switches that operate due to factors such as indoor and outdoor temperatures) for conversion Heat pumps and electric heating devices are used for heating (including rear-mounted electric heating devices).
3.4 Auxiliary electric heating devices for heating
Electric heating devices used together with heat pumps for heating (including rear-mounted electric heating devices)
3.5 Refrigeration It measures the total amount of heat removed from a closed space, room or area per unit time when the air conditioner is performing cooling operation, unit: W.
3.6 Refrigeration power consumption
The total power consumed by the air conditioner during cooling operation, unit: W.
3.7 Heating capacity
When the air conditioner performs heating operation, the total amount of heat sent into a closed space, room or area per unit time, unit: W.
Note: When there is only a heat pump heating function, the heating capacity is called the heat pump heating capacity. 3.8 Heating power consumption: The total power consumed by the air conditioner during heating operation, unit: W. Note: When there is only heat pump heating function, the heating power consumption pot is the heat pump heating power consumption.
3.9 Energy Efficiency Ratio (EER)
Under rated operating conditions and specified conditions, when the air conditioner performs cooling operation, the ratio of cooling capacity to effective input power is expressed in W / W means. 3.10 Coefficient of performance (COP)
Under rated working conditions (high temperature) and specified conditions, when the air conditioner performs heat pump heating operation, the ratio of heating heat to effective input power, its value is expressed in W / W .
Note: Effective input power refers to the average electrical power input into the air conditioner per unit time. These include:
① Compressor operation input power and defrosting input power (except for auxiliary electric heating devices not used for defrosting);
②All control and safety devices Input power;
③ Input power of heat exchange and sperm transfer device (fan, pump, etc.). 3.11 Circulating air volume (room air supply volume)
The air volume delivered by the air conditioner to a confined space, room or area per unit time when the ventilation door and exhaust door are completely closed and under rated cooling operating conditions. Unit: m 3 /s (m 3 /h). 3.12 Room-type calorimeter
An experimental device consisting of two adjacent rooms with a partition in the middle. One room serves as the indoor side and the other serves as the outdoor side. Each room is equipped with air-conditioning equipment; its cooling capacity, heat and water volume can be measured and controlled, and used to balance the cooling capacity and dehumidification of the indoor side of the air conditioner under test. The amount and the amount of humidification on the outdoor side are compared with the heating amount.
3.13 Air flame value method
A method for determining the cooling and heating capabilities of air conditioners. It measures the air supply parameters, return air parameters and circulating air volume of the air conditioner. Use the product of the measured air volume and the difference in enthalpy between supply air and return air to determine the capacity of the air conditioner.
4 Product Classification
4.1 Type
4.1.1 Air conditioners are divided into:
Types according to the climate environment (maximum temperature) of use Maximum temperature of climate environment T1 43
℃ T2 35
℃ T3 52
℃ 4.1.2 Air conditioners are divided into structural forms:
a) Integral type, its code is C;
The structure of integrated air conditioners is classified into window type (the code is omitted), wall-through type, mobile type, etc., and their codes are C, Y, etc. respectively.
b) Split type, its code is F;
Split type air conditioners are divided into indoor units and outdoor units. Indoor unit structures are classified into ceiling-mounted, wall-mounted, floor-standing, patio-type, embedded, etc., and their codes are: D, G, L, T, Q, etc., and the outdoor unit is code-named W. 4.1.3 Air conditioners are divided according to their main functions:
a) Cold air type, its code is omitted (for refrigeration only);
b) Heat pump type, its code is R (including refrigeration, Heat pump heating, refrigeration, heat pump and auxiliary electric heating device for heating together, refrigeration, heat pump and auxiliary electric heating device for heating by converting electric heating device and heat pump together);
c) Electric heating type, its code name is D (refrigeration, electric heating device).
4.2 Basic parameters
4.2.1 Rated cooling capacity of air conditioner (W) The preferred series are: 1400 1600 1800 2000 2200 2500 2800
3200 3600 4000 4500 5000 5600 6300
7100 8000 9000 10000 11200 12000 14000
4.2.2 Rated heat output of air conditioner (W) The preferred series are: 1600 1800 2000 2200 2500 2800 3200
3600 4000 4500 5000 5600 6300 7100
8000 9000 10000 11200 12500 14000 16000
4.2.3 The rated frequency of the power supply is 50Hz, and the single-phase AC rated voltage is 220V Or three-phase AC rated voltage 380V, special requirements are not subject to this limit.
4.2.4 The ambient temperature at which air conditioners usually operate is shown in Table 1:
Table 1 Ambient temperature at which air conditioners operate
Air conditioner type and climate type
T1 T2 T3
Cold air type 18 ℃ -43 ℃ 10 ℃ -35 ℃ 21 ℃ -52 ℃
Heat pump type -7 ℃ -43 ℃ - 7 ℃ -35 ℃ -7 ℃ -52 ℃
Electric heating type -43 ℃ -35 ℃ -52 ℃
Note: For heat pump air conditioners without defrost device, the minimum The operating temperature can be 5℃.
4.2.5 Under normal use conditions of the air conditioner, when the set temperature of the air conditioner is between 18 ℃ and 30 ℃, its control temperature can be ±2 ℃ of the set value. Automatically adjust within range. 5 Technical requirements
5.1 General requirements
5.1.1 The air conditioner shall comply with the requirements of this standard and GB 4706.32, and shall be manufactured according to the drawings and technical conditions approved by the prescribed procedures.
5.1.2 The air conditioner should undergo performance testing according to the climate type indicated on the nameplate. Air conditioners using more than two climate types should be tested under the working conditions of each climate type indicated on the nameplate.
5.1.3 The surface of the ferrous metal parts of the air conditioner should be treated with anti-rust treatment.
5.1.4 The surface of the electroplated parts should be smooth and uniform in color, and there should be no defects such as peeling, pinholes, obvious undue spots and scratches.
5.1.5 There should be no obvious bubbles, flow marks, missing paint, exposed primer, undue creases and other damage on the surface of the painted parts.
5.1.6 The surface of decorative plastic parts should be smooth and uniform in color. The plastic parts should be resistant to aging; there should be no defects such as cracks, bubbles, and obvious shrinkage holes.
5.1.7 The installation of each component of the air conditioner should be firm and reliable, and the pipelines or pipelines and components should not rub or collide with each other.
5.1.8 Generally, the fan motor of the air conditioner should be started at the same time when the compressor is running for cooling or the electric heating device is running for heating and humidification.
5.1.9 Air conditioners with remote operating devices (remote controls) should be of a structure that does not close the circuit except for operations such as unit switches or controllers.
5.1.10 The action of the electromagnetic reversing valve of the heat pump air conditioner should be sensitive and reliable to ensure the normal operation of the air conditioner.
5.1.11 The insulation layer of the air conditioner should have good insulation performance. .
5.1.12 The materials of the pressurized parts of the air conditioner refrigeration system should be able to withstand the action of refrigerant, lubricating oil and their mixtures without deterioration and ensure the normal operation of the whole machine.
5.1.13 The rated (high temperature) heating capacity of the heat pump of a heat pump air conditioner should not be less than its rated cooling capacity.
5.2 Performance requirements
5.2.1 Refrigeration system sealing performance
When tested according to the method 6.3.1, there should be no refrigerant leakage in each part of the refrigeration system. 5.2.2 Refrigeration capacity
When tested according to 6.3.2 method, the actual measured cooling capacity of the air conditioner shall not be less than 95% of the rated cooling capacity.
5.2.3 Refrigeration power consumption When tested according to method 6.3.3, the measured cooling power consumption of the air conditioner should not be greater than 110% of the rated cooling power consumption.
5.2.4 Heat pump heating capacity
When tested according to method 6.3.4, the actual measured heating capacity of the heat pump shall not be less than 95% of the rated heating capacity of the heat pump. 5.2.5 Heat pump heating power consumption
When tested according to method 6.3.5, the measured heating power consumption of the heat pump should not be greater than 110% of the rated heating power consumption of the heat pump.
5.2.6
Heating power consumption of electric heating device
When tested according to method 6.3.6; actual measurement of electric heating device of electric heating type and heat pump type air conditioner The heating power consumption requirements are as follows: For the power consumption of each electric heating device, the tolerance should be: if the rated power consumption of the electric heating device is less than or equal to 100W, the tolerance is ±10%; if the rated power consumption is more than 100W, the tolerance is - 10% to 5%. . 5.2.7 Maximum operating refrigeration
When tested according to the method 6.3.7, the components of the air conditioner should not be damaged, and the air conditioner should be able to operate normally;
The air conditioner shall operate continuously during the first hour During this period, the overload protector should not trip;
After the air conditioner is shut down for 3 minutes, it will start running continuously for 1 hour. However, the overload protector is allowed to trip within the first 5 minutes of starting operation, and is not allowed to operate thereafter. ; If the overload protector does not reset within the first 5 minutes of operation, and it resets within no more than 30 minutes of shutdown, it should be operated continuously for one hour;
For manually reset overload protectors, if the overload protector trips within the first 5 minutes , and should be forced to reset after tripping for 10 minutes, and should be able to run continuously for another 1 hour. 5.2.8 Minimum operating refrigeration
When tested according to method 6.3.8, the safety device should not trip when the air conditioner is in operation for 4 hours after the 10-minute starting period. The area of ??ice and frost condensed on the windward surface inside the evaporator chamber is It should not be greater than 50% of the windward area of ??the evaporator. 5.2.9 Maximum operating heating of the heat pump
When tested according to the method 6.3.9, the components of the air conditioner should not be damaged, and the air conditioner should be able to operate normally;
The air conditioner should operate normally during the first h During continuous operation, the overload protector should not trip; when the air conditioner is stopped for 3 minutes, it will start continuous operation for 1 hour, but the overload protector is allowed to trip within the first 5 minutes of starting operation, and is not allowed to operate thereafter; during operation If the overload protector does not reset within the first 5 minutes, and it resets within no more than 30 minutes of shutdown, it should run continuously for 1 hour;
For the overload protector that is manually reset, if it trips within the first 5 minutes, it should be operated continuously for 1 hour. After tripping for 10 minutes, forcefully reset it and it should be able to run continuously for another 1 hour. .
5.2.10 Minimum operating heating of heat pump When testing according to the method 6.3.10, the safety device of the air conditioner should not trip during the test operation.
5.2.11 Freezing When tested according to method 6.3.11(a). The area of ??ice and frost condensed on the windward surface of the evaporator chamber should not be greater than 50% of the windward area of ??the evaporator. When testing according to method 6.3.11(b), there should be no ice falling, water droplets dripping or blowing out from the inside of the air conditioner room.
5.2.12 Condensation
When tested according to method 6.3.12, condensation on the outer surface of the box should not drip, and indoor air supply should not contain water droplets.
5.2.13 When the condensation water removal capacity is tested according to the method 6.3.13, the air conditioner should have the ability to remove condensation water, and there should be no water overflowing or blowing out from the air conditioner to wet the building. or surrounding environment.
5.2.14 When automatic defrosting is tested according to method 6.3.14, it is required that the total time required for defrosting does not exceed 20% of the total test time; during the defrosting cycle, the indoor air supply temperature is low The duration at 18℃ shall not exceed 1min. In addition, the defrost cycle and immediately after the defrost is completed, the outdoor air temperature should not rise more than 5°C; if necessary, auxiliary heating in the heat pump unit can be used or according to the manufacturer's regulations.
5.2.15 When the noise is tested according to the method 6.3.15, the measured noise value (sound pressure level) of T1 and T2 air conditioners in the semi-anechoic chamber should comply with the requirements in Table 2. The noise in the fully anechoic chamber The measured value should be subtracted by 1dB(A) from the value shown in Table 2. The noise value of the air conditioner in T3 climate type may be increased by 2dB(A).
Table 2 Noise value (sound pressure level)
Rated cooling capacity W Indoor noise dB(A) Outdoor noise dB(A)
Integral split type Integral split type
< 2500 ≤ 53 ≤ 45 ≤ 59 ≤ 55
2500-4500 ≤ 56 ≤ 48 ≤ 62 ≤ 58
＞ 4500-7100 ≤ 60 ≤ 55 ≤ 65 ≤ 62
＞ 7100 ≤ 62 ≤ 68
5.2.16 Transportation
After testing according to the method of 6.3.16, the air conditioner will not There should be no damage and fasteners should be loose. Refrigerant leakage and noise should comply with the provisions of 5.2.1 and 5.2.15.
5.2.17 Operation
When tested according to method 6.3.17, the measured current, input power and other parameters should meet the design requirements.
5.2.18 Packaging
When tested according to method 6.3.18, it shall comply with the relevant provisions of GBl019.
5.2.19 Electroplated parts
After testing according to the method of 6.3.19, the rust area of ??each rust spot on the metal coating should not exceed 1mm 2 , and every l00cm 2 of the test piece should be , if there are more than 2 rust spots and rust stains, and when the thickness is less than 100cm 2 , there should be no rust spots or rust stains.
5.2.20 Surface coating
After testing according to the method of 6.2.20, check that the surface of the coating is in good appearance and no obvious pinholes are allowed. The main surface of the sample shall be within 100 cm 2. Within the square area, there must not be more than 2 bubbles with a diameter of 0.5mm to 1mm, and no bubbles with a diameter greater than 1mm are allowed.
5.2.21 Paint film adhesion of painted parts
After testing according to the method 6.3.21, the number of paint film peeling off shall not exceed 15%.
5.2.22 Energy Efficiency Ratio (EER)
The ratio of the cooling capacity measured according to the method 6.3.2 to the power consumption measured according to the method 6.3.3 should not be less than 85% of the value specified in Table 3 %, its value is a multiple of 0.05.
5.2.23 Coefficient of performance (COP)
The ratio of the heat pump heating capacity measured according to the method 6.3.4 to the power consumption measured according to the method 6.3.5 should not be less than the value specified in Table 3 85%, its value is a multiple of 0.05.
Table 3 Energy Efficiency Ratio (EER), Coefficient of Performance (COP)
Rated cooling (heat) capacity W EER, COP (W / W)
Overall Split type
< 2500 2.45 2.65
2500-4500 2.50 2.70
> 4500-7100 2.45 2.65
> 7100 2. 50
Note: T2 and T3 air conditioners can be implemented as a reference.
6 Test
6.1 Test conditions
6.1.1 See Appendix A for details of the test equipment for cooling capacity and heat pump heating capacity.
6.1.2 The test working conditions are specified in Table 4. According to the climate type of the air conditioner, the corresponding working conditions are selected for testing.
6.1.3 Measuring instruments and instrument accuracy requirements can be found in Appendix C.
Table 4 Test conditions
Working conditions Indoor air condition, ℃ Outdoor air condition, ℃
Dry bulb temperature Wet bulb temperature Dry bulb temperature Wet bulb temperature
Cooling operation rated cooling T1 27 19 35 24
T2 21 15 27 19
T3 29 19 46 24
Maximum run T1 32 23 43 26
T2 27 19 35 24
T3 32 23 52 31
Freeze T1 21 15 21 -
T2 10 -
T3 21 -
Minimum operation 21 15 Minimum temperature recommended by manufacturer
Condensation condensate removal 27 24 27 24
Heating operation heat pump rated heating high temperature low temperature ultra low temperature 20 15 (maximum) 7 2 -7 6 1 -8
Maximum operation 27 - 24 18
Minimum operation 20 - -5 -6
Automatic defrost 20 12 2 1
Note: 1) During the air conditioner refrigeration operation test, when no condensed water evaporates from the air-cooled condenser, the wet bulb Temperature conditions are not required.
2) When the temperature is 21 ℃ or higher, the controller should make the unit run.
3) The air conditioner specified by the manufacturer to be suitable for operation in low and ultra-low temperature conditions should be tested under low and ultra-low temperature conditions; if defrost occurs during the heating capacity (high temperature, low temperature or ultra-low temperature) test , then the air enthalpy method (see Appendix A2) should be used to conduct the heating capacity test.
4) If the air conditioner can operate under ultra-low temperature conditions, its minimum test should be conducted at a dry bulb temperature of -7°C and a wet bulb temperature of -8°C.
6.2 General requirements for testing
6.2.1 All tests of air conditioners shall be conducted according to the rated voltage and rated frequency on the nameplate, unless otherwise specified.
6.2.2 The air conditioner under test should be installed in the test room in accordance with the manufacturer's installation instructions and accessories provided. If the air conditioner is installed in several locations, the test should be conducted at the most unfavorable location. .
6.2.3 Except for the connection of devices and instruments required for testing in the prescribed manner, the air conditioner shall not be modified.
6.2.4 The air conditioner fan speed and system resistance cannot be changed during the test, and the test results should be corrected for atmospheric pressure according to standard atmospheric pressure.
6.2.5 The connecting pipe between the indoor unit and the outdoor unit of the split air conditioner should be as specified by the manufacturer or 7.5m as the tested pipe length, whichever is smaller, as the connecting pipe for the air conditioner components The tube should not be cut for testing. In addition to the design requirements, half of the pipe length should generally be placed in the outdoor environment for testing. The pipe diameter, installation, insulation, evacuation, refrigerant filling, etc. should comply with the manufacturer's requirements.
6.3 Test method
6.3.1 Refrigeration system sealing performance test
Under normal refrigerant charging, the refrigeration system of the air conditioner has a sensitivity of l × 10 -6 Pa · m 3 / s leak detector for inspection. The air conditioner can be placed in a positive pressure room without power, and the ambient temperature is 16°C to 35°C.
6.3.2 Refrigeration capacity test
Conduct according to Appendix A "Test and Calculation Method of Refrigeration Capacity and Heat Pump Heating Capacity" (Supplement) and the rated refrigeration operating conditions specified in Table 4 test. 6.3.3 Refrigeration power consumption test
According to the method given in Appendix A, while measuring the cooling capacity, measure the input power and current of the air conditioner. 6.3.4 Heat pump heating capacity test
According to the method given in Appendix A and the manufacturer's instructions, select the rated heating working conditions of the heat pump specified in Table 4 to conduct the heat pump heating capacity test. 6.3.5 Heat pump heating power consumption test
According to the method given in Appendix A, while measuring the heating capacity of the heat pump, measure the input power and current of the heat pump. 6.3.6 Heating power consumption test of electric heating device a) The air conditioner operates under the rated heating conditions of the heat pump. The heat pump auxiliary electric heating type is tested according to the method 6.3.4. After the heat pump heating capacity measurement reaches stability, measure the auxiliary electric heating device. input power. b) Under the rated heating condition of electric heating, the refrigeration system of the air conditioner is not running. Put the switch of the electric heating device in the maximum power consumption state and measure its input power.
6.3.7 Maximum operating refrigeration test Close all dampers of the air conditioner. The test voltages are 90% and 110% of the rated voltage respectively. After the operation is stable under the maximum operating refrigeration conditions specified in Table 4, run continuously for l h, then stop for 3 minutes (the voltage rise does not exceed 3% during this period), and then restart operation for l h.
6.3.8 Minimum operating refrigeration test
Adjust the temperature controller, fan speed, damper and guide grille of the air conditioner to the state where ice and frost are most likely to form, as specified in Table 4 The minimum operating refrigeration working condition is to allow the air conditioner to start and run until the working conditions are stable and then run for 4 hours. 6.3.9 Maximum operation heating test of heat pump
Close all dampers of the air conditioner, and the test voltages are 9G % and 110% of the rated voltage respectively. According to the maximum operating heating conditions of the heat pump specified in Table 4, run continuously for 1 hour after stabilization, then stop for 3 minutes (the voltage rise during this period shall not exceed 3%), and then restart for 1 hour. 6.3.10 Minimum operating heating test of heat pump
Close all dampers of the air conditioner, adjust the temperature controller, fan speed, etc. to the maximum heating capacity state, and follow the minimum operating heating conditions specified in Table 4 After the operation is stable, run it for 4 hours. 6.3.11 Freezing test
Adjust the temperature controller, fan speed, damper and guide grille of the air conditioner to the state that is most likely to freeze and frost the evaporator without violating the manufacturer's regulations. After reaching the freezing test conditions specified in Table 4, conduct the following tests:
a) Air circulation test: start the air conditioner and run it for 4 hours.
b) Dripping test: Cover the indoor return air outlet of the air conditioner to completely prevent air circulation and then run it for 6 hours so that the evaporator coil air path is completely blocked by frost. After shutting down, remove the cover until the frost is completely melted. , and then run the fan at the highest speed for 5 minutes.
6.3.12 Condensation test
Adjust the temperature controller, fan speed, damper and guide grille of the air conditioner to the most condensable state for refrigeration operation without violating the manufacturer's regulations, and meet the requirements in Table 4 After the specified condensation condition, the air conditioner runs continuously for 4 hours.
6.3.13 Condensation water removal capacity test
Adjust the temperature controller, fan speed, damper and guide grille of the air conditioner to the most condensable state, and place it on the water tray After the water is filled with water and the water flows out of the drain outlet, it shall be operated according to the water condensation conditions specified in Table 4. When the water level in the drain pan is stable, it shall be operated continuously for 4 hours.
6.3.14 Automatic defrost test
For an air conditioner equipped with an automatic defrost device, set the air conditioner’s temperature controller, fan speed (split indoor fan high speed, outdoor fan (Low speed), damper and guide grille are adjusted to the state where the outdoor side heat exchanger is most prone to frost. After the defrosting conditions specified in Table 4 are stable, continue to run for two complete defrosting cycles or run continuously for 3 hours (test The total time should start from the end of the first defrost cycle) until the end of the first defrost cycle 3 hours later, whichever is longer.
6.3.15 Noise test
According to the requirements of Appendix B "Determination of Noise" (supplement), conduct the noise test under rated cooling capacity and rated heat generation (high temperature) conditions.
Note: The heating state noise test is only applicable to heat pump air conditioners.
6.3.16 Transportation test
Packaged air conditioners should be tested according to GB 4798.2. The manufacturer should test the environmental conditions that may be experienced during transportation from the place of production to the sales area (refer to GB 4798.2 Table A1) Determine the test conditions and test methods, or conduct the test according to the contract requirements.
6.3.17 Operation test
Under the condition that the ambient temperature is close to the rated refrigeration working condition, the air conditioner operates continuously, and its current, input power and other parameters are measured. 6.3.18 Packaging test
The packaging of the air conditioner should be designed according to the moisture-proof packaging required by GBl019, the anti-vibration packaging under circulation conditions, and the crossbar impact test, and the vibration and crossbar impact tests should be carried out according to the circulation conditions l. 6.3.19 Salt spray test of electroplated parts
The electroplated parts of air conditioners shall be subjected to salt spray test in accordance with GB/T 2423.17. Test period is 24h. Before the test, clean and remove oil from the surface of the electroplated parts. After the test, use clean water to wash away the salt remaining on the surface, and check the corrosion of the electroplated parts. The results comply with the requirements of 5.2.19. 6.3.20 Surface coating damp heat test
Conduct damp heat test according to GB/T 2423.3, the test period is 96h. Take a 100mm × 100mm sample from the flat surface of the top or side of the box. Clean and remove oil from the surface before the test. After the test, perform an appearance quality inspection. The results should comply with the provisions of 5.2.20. 6.3.21 Paint film adhesion test on painted parts
Select an area 10mm long and 10mm wide on the outer surface of the box, and use a new scraper blade to draw 11 stripes vertically and horizontally at intervals of 1mm, reaching the depth of the substrate. Parallel cuts. Use zinc oxide medical tape to stick it firmly, and then quickly tear it off in the vertical direction. The number of paint film peeling off within the scratch range is evaluated based on the ratio of 100. If the paint film retains less than 70% in each small grid, it is considered to have fallen off. After the test, check the peeling off of the paint film, and the results should comply with the provisions of 5.2.21. 7 Inspection rules
The safety requirements of air conditioners should comply with the provisions of GB 4706.32.
Each air conditioner must pass the inspection by the quality department of the manufacturer before it can leave the factory. It must be accompanied by a quality inspection certificate, instruction manual, warranty, packing list, etc. Air conditioner inspection is generally divided into factory inspection and type inspection.
7.1 Factory inspection
7.1.1 All air conditioners proposed for delivery shall undergo factory inspection.
7. 1.2 The sampling of random picking items is carried out in accordance with GB2828, and the random inspection items are inspected batch by batch. batch. The sampling plan, inspection level and qualified quality level can be determined by the manufacturer's quality inspection department.
7.1.3 The safety items in the factory inspection items are all fatal defects. As long as one item fails, the batch of products will be judged to be unqualified.
7.1.4 After factory inspection, all qualified samples can be delivered to the ordering party as qualified products.
7.2 Type inspection
7.2.1 Type inspection shall be carried out when the air conditioner is under one of the following conditions:
a) New product on trial basis;
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b) When the product is reproduced with an interval of more than one year;
c) For products in continuous production, no less than once a year;
d) When the product is in design, process When there are major changes in materials and materials;
e) When the factory inspection results are significantly different from the last type inspection;
f) The national quality supervision agency proposes a requirement for type inspection hour. 7.2.2 Type inspection shall include all test items specified in GB 4706.32.
7.2.3 Type inspection sampling shall be carried out in accordance with GB 2829, using a one-time sampling plan of discrimination level I.
7.2.4 All safety items in type inspection are fatal defects, and the safety items must be 100% qualified. If one item fails, the product in that cycle will be judged to be unqualified.
7.2.5 Samples for type inspection shall be randomly selected from qualified finished products, and samples for type inspection shall not be delivered to the ordering party as qualified products.
7.3 Acceptance
7.3.1 The ordering party has the right to check whether the product quality meets the requirements of this standard. The ordering party can accept the goods according to the factory inspection items at the time of delivery.
7.3.2 According to the request of the ordering party, the supplier can provide a complete type inspection report within one year. The quality indicators and sampling plan for acceptance can be mutually agreed upon by both parties. The sampling plan can also be According to GB 2829, if the orderer has any questions about product quality, it can be negotiated with the supplier and manufacturer. If some or all inspection items are added to the type inspection, if there are still disputes, they should be arbitrated by the statutory authorities.
7.3.3 Products that have been stored for more than two years before leaving the factory must be re-inspected and accepted according to the factory inspection items.
8 Marking, packaging, transportation and storage
8.1 Marking
8.1.1 Each air conditioner should have a durable nameplate fixed in a conspicuous place. The nameplate The following items should be clearly marked, and the relevant content required by GB 4706.32 should be marked.
a) Product name and model;
b) Climate type (T1 climate type air conditioners need not be marked);
c) Manufacturer name;
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d) Main technical parameters (cooling capacity, heating capacity, noise, circulating air volume, refrigerant name and injection volume, rated current, rated voltage, rated frequency, input power, quality, etc.), split type air conditioner indoors , the outdoor units should be marked separately, where the indoor unit is marked with the parameters required for the complete machine, and the outdoor unit is marked with the parameters of the outdoor unit, but at least the refrigerant name and injection amount, rated voltage, frequency and input current and power should be marked;
e) Product factory number;
f) Manufacturing date.
Note: Usually the heating capacity indicated on the nameplate is the high-temperature heating capacity. If the air conditioner is tested for low-temperature heating capacity, the nameplate should also indicate the low-temperature heating capacity.
The input power should be marked with rated cooling power, rated heating power consumption and heating power consumption of electric heating device respectively.
8.1.2 The air conditioner should be equipped with signs indicating the working conditions, such as signs indicating the rotation direction of control switches and knobs, and a circuit diagram should be attached at the appropriate location.
8.1.3 The air conditioner should have a registered trademark mark.
8.1.4 Packaging marks, packaging boxes should be clearly marked with non-fading pigments:
a) Product name, specifications, models and trademarks;
b) Quality (gross quality, net quality);
c) Dimensions: depth × width × height (cm);
d) Manufacturer name;
e) Color marking (integrated air conditioners should indicate the panel color, and split air conditioners should indicate the main color of the indoor unit);
f) "Handle with care", "Do not turn upside down", "Protect against moisture" " and "Number of stacking layers" and other storage and transportation precautions, their markings should comply with the relevant provisions of GBl91.
8.2 Packaging
8.2.1 The air conditioner should be cleaned and dried before packaging.
8.2.2 The packaging of the air conditioner shall be able to withstand the transportation test and shall comply with the requirements specified in 5.2.16.
8.2.3 The following documents and attachments should be included in the packaging box:
8.2.3.1 Product certificate, the content of which should include:
a) Product Name and model;
b) Product factory number;
c) Inspection conclusion;
d) Inspection seal;
e) Inspection date.
8.2.3.2 The instruction manual should be prepared in accordance with the requirements of GB 5296.2, and its main content should include:
a) Product name, model (specification);
b) Product overview (purpose, characteristics, usage environment, main performance indicators and rated parameters, etc.);
c) Grounding instructions;
d) Installation and usage requirements, maintenance and Maintenance precautions;
e) Name, quantity, specifications of product accessories;
f) A list of common faults and solutions, after-sales service matters and manufacturer responsibilities;
g) Manufacturer’s name and address.
Note: The above content can also be compiled into a separate volume.
8.2.3.3 Packing list.
8.2.3.4 Accessories required by the packing list.
8.2.4 The accompanying documents should be sealed against moisture. And place it in an appropriate location in the box.
8.3 Transportation and Storage
8.3.1 During transportation and storage, the air conditioner should not be bumped, tilted, or exposed to rain or snow.
8.3.2 The storage environment conditions of the product should be in accordance with the relevant provisions of the GB 4798.1 standard, and the product should be stored in a dry and well-ventilated warehouse. There should be no corrosive and harmful gases around.