1. Check the packaging and interior
(1) cartons and cartons (or color boxes) clean, neat, no damp, extrusion deformation, dirty, marked clearly;
(2) foam packaging size appropriate, clean, and no deformation, moisture, damage and other defects;
(3) the production date of the carton is clearly marked;
(4) whether the packaging method is reasonable and firm;
(5) whether the bar code is clear;
(6) whether the machine installed in the box is consistent with the packaging; Instruction manual, certificate of conformity and legible print.
2. Check the product sticker
(1) all the stickers are in the right position, no wrong paste, paste, no bubble, warped edge. (the test can be wiped with a cloth soaked in alcohol.)
(2) all the stickers printed word is clear and neat, the design, logo, color is clear and correct;
(3) whether the product name, power, voltage and frequency on the nameplate are correct;
(4) product components whether there are scratches, black spots, burrs, watermarks, stains and other bad phenomena, color is correct;
(5) the position of each accessory is close, leaving a gap of no more than 1mm; Whether the switch button is flexible, whether the handlebar assembly is firm, the position is appropriate.
3. Product performance testing
(1) high voltage test: AC 110/220v 3.1kv /1MIN 0.5ma;
(2) switch test: power test, continuous switch more than 10 times, should be able to work normally;
(3) power test: under standard voltage, +5% ~ -10% of rated power is the normal operating range, otherwise, it is unqualified product;
(4) start the test: start the test from the low position first, and start the machine immediately after the switch;
(5) wind blockage test (prevent fan from stopping)
(6) test of electric heating wire: under normal operation, the heating wire should not redness obviously (wind blocking for 1-2 seconds). When working at 15% above the rated power, it should work normally for at least 30 minutes. Protection switch can not be premature protection, plastic shell deformation;
(7) noise testing: use the noise tester (A) to measure the weight.
(8) life test: under normal voltage, it can work continuously for at least 200 hours (factory standard). During 4-6 hours of aging test, the power cord shall not be obviously hot, the plastic shall not be deformed, and the protection switch shall not take off (except under special circumstances);
(9) cold wind test
(10) hot air test
(11) drop test
(12) power cord test: pull the power cord with a force of 15 kilograms (KG) without loosening or disconnecting the power cord. The power cord should be normally energized without any bad contact
(13) appearance test (visual test): all switches are flexible, not stuck or scratched. No burr, scratch, crack, release, etc. The heating wire should not be too close to the net cover;