Dryer inspection, how to choose a dryer?

1. Appearance, Packaging, and Labeling Inspection <br>Inspect the product packaging for damage, deformation, or damage. Verify that the packaging contents and form match the product description. Check that the overall appearance of the device matches the promotional image. Confirm that all accompanying materials, including the instruction manual and warranty card, are complete. The outer box dimensions must match those in the product manual.

2. Data Measurement and Field Testing

1. Transport drop test (not suitable for fragile products)
   The product and packaging must not exhibit fatal or serious defects after 10 drops in accordance with the ISTA 1A standard.

2. Product size/power cord length/product weight measurement <br>Measurements are carried out according to product specifications and confirmed samples. If the customer does not specify the tolerance requirements, a default tolerance of ±3% will be applied.

3. Barcode/QR code scanning check <br>All barcodes should be scannable and the scanned information should be accurate.

4. Assembly/Installation Check <br>Assembly should be completed smoothly according to the instruction manual or assembly guide without any assembly defects or missing parts.

5. Full functional inspection (including functions that can only be verified after assembly)
   All functions, such as installation and adjustment, switch/knob operation, parameter setting, screen display and actual usage functions, shall operate normally and meet the declared specifications.

6. Coating Adhesion Test <br>Use 3M 600 tape to perform adhesion test on the paint, hot stamping, UV coating and printed areas. The peeling area shall not exceed 10%.

7. Power-on test <br>The sample must run at full load under rated voltage for at least 4 hours (or as specified in the instructions if it is less than 4 hours). After the test, it must pass high-voltage test, functional test and ground resistance test, and the results must be normal.

8. Ground test (if applicable)

   • EU standard: For lighting products, the resistance should not exceed 0.5 ohms at 10 amperes per second; for other household appliances, the resistance should not exceed 0.1 ohms at 25 amperes per second.

   • US and Canadian standards: 25 amperes for 1 second, resistance no greater than 0.1 ohm.

9. Power consumption or input power/current check <br>The power consumption, input power and current values ​​should comply with product specifications and relevant safety standards.

10. Power cord pull test

    • IEC standard: For product weight ≤ 1kg, the pulling force is 30N; for 1kg–4kg, the pulling force is 60N; for weight > 4kg, the pulling force is 100N. Pull 25 times for each purpose, and the linear displacement shall not exceed 2mm.

    • UL standard: The power cord should not move when a pulling force of 35 pounds (about 155.7N) is applied for 1 minute.

11. Inspection of internal structure and key components <br>Check the internal structure and key components according to CDF (critical component list) or CCL.

12. Printing, logo and nameplate adhesion test <br>Wipe the label with a damp cloth for 15 seconds, then wipe it with a gasoline cloth for 15 seconds. There should be no defects such as falling off and blurring.

13. Stability test (applicable to vertical products)
    Place the product on a 10-degree inclined plane (15 degrees for heating products) in normal use, with the power cord in the most unfavorable position. The device should not fall over.

14. High voltage test <br>Apply specified voltage between specified components for 1 second, leakage current limit 5mA:

    • US and Canadian markets: 1200V AC

    • European Class I appliances: 1000V AC

    • European Class II appliances: There should be no insulation breakdown during the 2500V AC test.

15. Speed ​​test (no reference standard)

16. Noise test (no reference standard)

17. Low voltage starting test <br>It should be able to start normally at 80% of the rated voltage.

18. Leakage current test <br>At 127V voltage, the leakage current should be less than 0.75mA.

19. Temperature Test <br>Measures the maximum temperature inside the cavity.

20. Product Capacity Check <br>Verify the actual available capacity based on the capacity declared in the product manual.