Dehumidifier Inspection Technical Specifications: Type, Parameters, Requirements and Test Methods Inspection and Audit Service for Factory

November 11, 2025

As an important electrical device for regulating indoor air quality, the performance safety and quality reliability of dehumidifiers directly affect the user's experience and health protection. To ensure that dehumidifier products meet national electrical safety standards and quality certification requirements, establishing a professional inspection process is of vital importance. This article will systematically introduce the inspection standards, testing methods and certification requirements of dehumidifiers, providing a complete quality control guide for enterprises.
I. Product Classification Inspection and Certification System
1.1 Temperature Applicability Range Certification
Type A Dehumidifier: Inspection and certification in an environment ranging from 18℃ to 35℃
Type B dehumidifier: With a wide temperature range of 5℃ to 35℃, it has passed the inspection and certification.
C-type dehumidifier: Special certification for customized industrial conditions
1.2 Usage Classification and Inspection Certification
Comfort Type (S Type): Home Environment Inspection Standards
Process Type (G Type): Professional Certification for Industrial Applications
Mixed model (AS/BG type): Comprehensive functional inspection and evaluation
1.3 Inspection and Certification of Cooling Methods
Air-cooled type: Performance certification of air cooling system
Water-cooled type: Inspection standards for water circulation system
Combination type: Professional certification for composite cooling technology
1.4 Function Type Inspection Certification
Heating type: Safety certification for heating function
Cooling type: Evaluation of refrigeration efficiency test results
Temperature control type: Professional certification for temperature control accuracy
II. Technical Requirements for Inspection and Certification Standards
2.1 General Requirements for Inspection and Certification
Compliance Certification of Design Documents
Inspection of the refrigeration system in accordance with the GB/T9237 standard
Professional assessment of the installation firmness of components
Material Environmental Protection and Recycling Certification Standards
2.2 Safety Material Inspection and Certification
Certification of non-toxic and harmless nature of insulation materials
Inspection of fire resistance ratings of flame-retardant materials
Professional testing of dew protection performance
Reliability certification of water level protection device
2.3 Appearance Quality Inspection Certification
Standardized inspection of rust prevention treatment
Professional certification for surface quality of electroplated parts
Evaluation of flatness for painted components
Strict inspection of the integrity of plastic parts
III. Performance Indicator Inspection and Certification System
3.1 Core Performance Inspection and Certification
Nominal dehumidification capacity certification: Measured value ≥ 95% of the indicated value
Power consumption certification: The measured value is ≤ 110% of the indicated value.
Energy efficiency ratio certification: Verification of meeting the standard for unit power dehumidification capacity
3.2 Extreme Operating Condition Inspection Certification
High-temperature performance certification: Verification of dehumidification capacity at extreme temperatures
Maximum load certification: Professional test of overload protection function
Low-temperature operation certification: Rigorous inspection of anti-frosting performance
3.3 Safety Performance Inspection Certification
Condensation Protection Certification: Inspection of Drip Protection System
Insulation performance certification: Professional test for water leakage insulation resistance
Heat exchange limit certification: Verification of safety protection in abnormal conditions
IV. Electrical Safety Inspection and Certification Standards
4.1 Electrical Shock Protection Certification
Inspection of the Protection Level of Live Components
Standardization of Safety Probe Testing
Professional certification for protection of moving parts
4.2 Electrical Performance Certification
Leakage Current Limit Test for Inspection
Electrical strength withstand voltage certification
Reliability verification of grounding device
4.3 Electromagnetic Compatibility Certification
Terminal EMI Voltage Compliance Inspection
Harmonic current emission limit certification
Professional testing of resistance to interference performance
V. Special Function Inspection Certification
5.1 Noise Control Certification
Standardized inspection for sound pressure level limits
Explicit Value Compliance Professional Verification
Use of environmental adaptability assessment
5.2 Standby Power Certification
Verification of Energy Efficiency in Low-Power Mode
Professional testing of communication function power consumption
Energy efficiency standard compliance certification
5.3 Mobility Performance Certification
Inspection of casters' impact resistance performance
Brake Function Reliability Certification
Dynamic Load Durability Professional Test
VI. Environmental Adaptability Inspection Certification
6.1 Corrosion Resistance Performance Certification
Standardized inspection through salt spray test
Professional assessment of coating durability
Thorough inspection of coating adhesion
6.2 Material Durability Certification
Outdoor unit plastic parts aging test
Professional certification in ultraviolet tolerance
Comprehensive assessment of environmental adaptability
VII. Additional Function Quality Inspection Certification
7.1 Air Purification Certification
Verification of Clean Air Volume Efficiency
Professional testing of particulate matter removal rate
Stability certification of purification function
7.2 Sterilization Function Certification
Professional Verification of Sterilization Efficiency Rate
Microbial removal effectiveness certification
Evaluation of compliance with hygiene standards
VIII. Inspection and Certification Process Standards
8.1 Test Condition Certification
Certification of Rated Voltage and Frequency for Inspection
Environmental condition control certification
Professional verification of instrument and meter accuracy
8.2 Installation Requirements Certification
The manufacturer's instructions must be strictly followed during the inspection process.
Standardization test of connection pipe length
Professional assessment of the completeness of the attachment
8.3 Data Processing Certification
Standardized processing of measurement data
Power correction professional calculation
Strict control over tolerance range
IX. Safety Testing and Inspection Certification
9.1 Commissioning Test Certification
Inspection for Detection of Abnormalities during Commissioning
Professional verification of safety protection functions
Accuracy certification of the control system
9.2 Sealing Performance Certification
Precise Detection of Refrigerant Leakage
Air tightness grading inspection standards
Sealing system reliability certification
9.3 Durability Test Certification
Maximum Load Continuous Operation Inspection
Voltage fluctuation adaptability certification
Professional assessment of component durability
X. Key Control Matters for Factory Inspection Certification
To ensure that the quality of dehumidifiers continues to meet the certification requirements, during the factory inspection process, the following matters need to be given special attention:
Production process certification: Establish quality control points for key processes
Supply Chain Management Certification: Implementing a Supplier Quality Assessment System
Equipment certification: Regular calibration of testing instruments and equipment
Quality management system: Certified by ISO9001 quality system standard
Personnel qualification certification: Inspection personnel undergo professional training and obtain certificates before taking up their positions.