Mixer inspection, testing and inspection knowledge sharing

A blender is the ideal kitchen assistant for making meringues, creamy sauces, dough and all kinds of baked goods.

So, how should a blender be inspected? What tests do professional inspectors perform?

The core inspection points include: packaging, labeling, identification, product appearance and craftsmanship, box marking and various on-site tests.

The on-site test items are as follows:

1. Shipping drop test (not suitable for fragile products)
   After 10 drop tests according to ISTA 1A standards, the product and packaging should not have fatal or serious defects.

2. Product size/power cord length/product weight measurement <br>Measurement is based on product specifications and confirmed samples. If the customer does not specify the tolerance requirement, a ±3% tolerance is used.

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

4. Assembly and installation inspection <br>The assembly should be completed smoothly according to the instructions and there should be no problems in the whole process.

5. Coating Adhesion Test <br>Use 3M 600 tape (or tape of equivalent performance) to perform adhesion test on the painted, hot stamped, UV coated and printed areas. The peeling area shall not exceed 10%.

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

   • For the US or Canadian market: 1200V AC voltage

   • Class I appliances sold in Europe: 1000V AC

   • Class II appliances sold in Europe: There should be no insulation breakdown during the 2500V AC voltage test.

7. Power consumption or input power/current check <br>The measured power consumption, input power and current values must comply with product specifications and relevant safety standards.

8. Power cord pull test

   • IEC standard : Apply force 25 times based on the product's net weight: 30N for ≤1kg, 60N for 1kg-4kg, and 100N for >4kg. After the test, the linear displacement must not exceed 2mm.

   • UL standard : Apply a pulling force of 35 pounds (about 155.7N) and maintain it for 1 minute. The power cord should not move.

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

10. Rated label friction test and printed label adhesion test <br>First wipe the label with a wet 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.

11. Stability check <br>Place the product (with or without contents) on a 15-degree inclined plane in normal use, and place the power cord in the most unfavorable position. The appliance should not fall over.

12. Motor stall test <br>Lock the motor at rated voltage. The product must not pose a danger to the user and the surrounding environment, and the casing material must not ignite, burn or melt the metal.

13. Fan blade hardness check <br>The fan blade hardness should not be lower than the required value (usually not less than 45HRC).

14. Actual use test

    • Juicer : Use orange halves and run for 24 cycles at rated voltage (15 minutes on and 15 minutes off per cycle).

    • Blender : Mix carrots and water in appropriate proportions to the maximum scale and run 10 cycles (3 minutes of work and 1 minute of standby per cycle).
      After testing, there should be no leakage, blockage, rupture or other malfunctions.

15. Speed check <br>The operating speed should comply with product specifications.

16. Stability test <br>Place the product on a 10-degree inclined plane (15 degrees for heating appliances) in normal use, with the power cord in the most unfavorable position. The appliance should not fall over.

17. Noise test <br>When measured at 1 meter from the equipment, the operating noise should not exceed 85 decibels.