I. Packing inspection
1.The packing case does not conform to the product model, the packing case is seriously damaged.
2.The shipping mark printed on the packing case is not in conformity with the order.
3. The attachment, qualification certificate, specification is missing or inconsistent with the product.
4.There are foreign bodies in the packing box or inverted products.
5.There is no factory address or name on the packing case, specification or housing.
6. Attachment, packing case or packing method does not meet the requirements of the order.
7. Factory date and quality labels are missing or mislabeled; Labels are obliquely pasted, rolled, and bubbled.
Ii. Appearance inspection
1. The machine shell is seriously cracked, deformed, damaged, detached or corroded.
2. The surface of the glass door is generally scratched, deformed, shed, corroded and burr.
3. Slight scratch, deformation, fall off, rust and burr on the surface of the glass door.
4. The seam is obviously not fit or uneven or large matching gap.
5. Loose or lack of fastening screws for panel assembly.
6. Nameplate, trademark, decoration missing, wrong, reverse, off.
7. Broken power cord.
8. Function keys or sockets are not marked, incorrectly marked, ambiguous and affect the use
Iii. Functional test
1. Any switch or knob is out of order or damaged.
2. The switch and knob are too loose, too tight and obviously deformed without failure.
3. Once in a while, the above disadvantages don’t work.
4. Switch and knob feel uncomfortable or have mechanical friction sound.
5. The knob comes off, but can be reset without tools.
6. Plug contact or plug failure.
7. Switch, knob has obvious dead point, jump.
8. The indicator light is not on, but it is functioning normally.
9. The heat pipe resistance is too high and the heat is bad.
10. Short circuit of hot wire to ground.
11. The indicator light is not on and has no function.
12. Instantaneous failure (failure that can recover automatically without applying external force or changing original stress after occurrence) occurs twice or more.
13. The fan speed is slow with current sound or the fan does not turn.
14.More than 100 m Ω 14. Grounding resistance test.
15. Pressure test AC1250V,5mA/1min alarm.
Power test
At rated voltage, the power is not within +5% or -10% of rated power
Other inspections
1. There is metal foreign body in the machine. 2. There are non-metallic foreign bodies in the machine.