Key Questions to Ask When Ordering Floor Fan Made in China

The proper temperature will make people feel comfortable. In the hot summer, the electric fan should be an indispensable cooling aid. Every family needs a suitable fan to enjoy the coolness. And there are many types of electric fans on the market for choice, including Standing Pedestal Fan, Air Cooler, Air-conditioning Fan, Tower Fan, Remote Control Fan, Ceiling Fan, Wall Mount Fan, and Industrial Fan, etc.

With competitive price and timely delivery, HAIYANG sincerely hope to be your supplier and partner.

Therefore, inspection companies often have to help customers to check the quality of the shipment of the electric fans, and when inspectors are inspecting the fans, what kind of inspection will be carried out and what test items need to be done? The following is a detailed inspection checklist by the professional inspection company AQI Service

Electric Fan Inspection Checklist

• 1. Packaging inspection

• 2. Visual inspection

• 3. Mechanical assembly inspection

• 4. Security test

• 5. Function check

• 6. Special test

The following is a detailed description of each inspection item

1. Packaging Inspection

Packaging inspection involves product packaging materials, packaging methods, and instructions, labels, etc.

1) Inspection of outer box and inner box

• Is it damaged, deformed, moldy, etc.
• Pay attention to whether the marks meet the requirements, whether there is poor printing, etc.
• Whether the packaging method meets the requirements

2) Inspection of color boxes and accessories

• Pay special attention to any missing accessories (including fan blades, net bundles, screw bags, etc.)
• Pay special attention to all packaging materials (including instructions, warranty cards, etc.)

3) The installation instructions should include:

• For the lighting appliances installed on the fan, there should be a description of the model and category
• Whether the partition fan can be installed outside the window or wall;
• The fan installed in a higher position should have a blade above 2.3m above the ground;
• For duct fans and partition wall fans, care must be taken to prevent gas from flowing back into the room from the open-air channel or other open flame equipment

2. Visual Inspection

• 1) Check whether the product is consistent with the sample provided by the customer, specifications, orders, color box pictures and content, instructions, etc.
• 2) Are there any missing product labels
• 3) Are there any missing or misprinted product trademarks, and are there any defective silk screens.
• 4) The appearance should not have some bad defects (such as dirt, scratches, deformation, rust, oxidation, poor spraying, poor plating, color mixing, etc., pay special attention to whether the motor has rust)

Especially remind the testing room to ensure that there is enough light

(1) Nameplate

For fans used in tropical climates, the letter “T” should be used.

Fans used in situations where the ambient temperature is higher than 40 ° C must be marked with the operating ambient temperature

(2) Ceiling fan: Pay special attention to that the LNE label cannot be reversed.

3. Fan Mechanical Assembly Check

• 1) Are all components in good condition, and are there obvious gaps and steps?
• 2) Shoot the camera by hand, then shake it to check whether there are any foreign objects (such as screws, mesons) or loose assembly in the product.
• 3) Check whether the base is uneven (put the product on the glass to see if it shakes, you can use a feeler gauge) (except ceiling fan)
• 4) Are the front and rear grille fitted well?

4. Electric Fan Safety Inspection and Testing

• 1) Whether the product has sharp edges and corners (especially the metal head and grille)
• 2) Whether the power cord is broken or exposed copper (special attention to the outlet of the power cord)
• 3) High voltage test and ground test:

International standards: IEC60335-1 & IEC60335-2-80

American Standard: UL-507

• 4) Special reminder:

High voltage danger, pay attention to safety

Pay attention to the validity period of the test equipment

Pay attention to the normal function of the test instrument

Note that the parameters must be set according to the standard requirements (test voltage, test current, test time) before testing

5. Basic Function Check

• 1) Function check of the switch button

Speed ​​control switches, timing knobs, shaking head switches, lighting switch, etc., these control mechanisms should be flexible and reliable contact (switch 3 times). For the speed control gear, the phenomenon that two gears are connected at the same time or one gear cannot be pressed is not allowed. Press the stop button, and each speed gear button should be reset normally.

• 2) Operation and speed regulation performance check

After energizing, turn the toggle switch back and forth several times to check whether it is malfunctioning or the assembly is too tight. (Table fan, floor fan)

Fans should shake their heads and stop swings quickly, without intermittent, stagnation, shaking, tooth sweeping, tooth skipping phenomena, the speed difference of each gear should be obvious, the larger the air supply angle, the better.

There should be no abnormal noise in the mechanical transmission part of the fan.

When the electric fan runs at high, medium, and low speeds, the vibration is small, and the noise is low.

For fans with remote control, test their function.

• 3) Input power test

Under the condition of input rated voltage and frequency,

IEC: If the input power is> 25W and ≤ 300W, the deviation should not be greater than + 20%, if the input power is> 300W, the deviation should not be greater than + 15% or 60W (choose a larger value).

UL: should not be greater than + 10%.

• 4) Function check of head up and head swing (table fan, floor fan)

The fan head of the electric fan has a flexible operation at all angles of depression and elevation, is locked tightly, adjusted to the maximum depression angle, or shakes the head to the final position, and the net cover must not touch the fan pillar. When the fan is running, the stability is better, it cannot be tipped, and the angle of the shaking head should not be lower than the requirement.

• 5) Operation and speed regulation performance check

After energizing, turn the toggle switch back and forth several times to check whether it is malfunctioning or the assembly is too tight. (Table fan, floor fan)

Fans should shake their heads and stop swings quickly, without intermittent, stagnation, shaking, tooth sweeping, tooth skipping phenomena, the speed difference of each gear should be obvious, the larger the air supply angle, the better.

There should be no abnormal noise in the mechanical transmission part of the fan.

When the electric fan runs at high, medium, and low speeds, the vibration is small, and the noise is low.

For fans with remote control, test their function.

• 6) Positive and negative function check (ceiling fan)

Push-type switch, the handle is pushed down, the fan is forward rotation, that is, the wind blows down for summer use, and the fan is reversed when the wind blows upwards, which is suitable for cold indoor air.

Fan inspection and inspection

6. Special Test of fan

• 1) Nameplate and mimeograph friction test

(1) IEC:

First, moisten with a pure cotton cloth and attach a weight of 1000g to wipe back and forth on the nominal plate 15 times

Then use a pure cotton cloth dipped in gasoline or 75% alcohol and attach a weight of 1000g to wipe back on the nominal plate 15 times (the frequency is 1 time back and forth for 1 second, you can use the stopwatch as a reference to adjust the frequency)

(2) UL:

Use a thumb or finger to apply a force of approximately 4 pounds (18N) to the nominal plate and wipe it back and forth 10 times (the frequency is 1 round for 1 second, you can use the stopwatch as a reference to adjust the frequency).

After the above tests, the label should still be legible, the nominal plate should not be easily removed, and it should not be curled.

(3) Adhesion test with 3M adhesive tape

Use 3M adhesive paper to stick and press, tilt-up 45 degrees and quickly pull up, repeat 3 times, the word mark should not fall off.

For more information, please visit Floor Fan Made in China.

• 2) Stability test (table fan, floor fan)

Place it on an inclined plane at 10 ° to the horizontal at any normal use position in use. The power cord is placed on the inclined plane in the most unfavorable position, and the fan should not fall over. (IEC & UL: 10 °)

If the height exceeds 1.7m and the weight exceeds 10kg, the portable floor fan is placed on the horizontal surface. Apply a horizontal force of 40N to the fan at the height of 1.5m. The fan should not tip over. (IEC60335-2-80)

• 3) Net cover protection test (table fan, floor fan)

On the grille, apply 20N thrust and tension along the fan motor axis. After the test, dangerous moving parts should not be touched with a test probe similar to type B. However. The test probe has a circular limit plate with a diameter of 50 mm instead of a non-circular limit plate.

Type B test probe

• Finger diameter: 12 mm
• Bending finger length: 80mm (total length of three sections)
• Bezel diameter: 50mm
• Baffle length: 100mm

• 4) Motor speed test

Measure the motor speed with a speed tester (generally for high-end)

• 5) Noise test

Before the test, the appliance should be run-in for a sufficient period of time. Unless otherwise specified, it should be run at the highest speed without load.

Use a noise tester to measure the decibel value at a distance of 1 meter.

• 6) Installation test (Ceiling fan)

According to the installation instructions, install it yourself,

Are there fewer accessories?

Is the description of the manual correct?

How easy is the installation?

Are there any safety hazards?

• 7) Remote control distance test

According to the requirements in the color box and the manual, test whether the function of the product meets the requirements.

• 8) Power cord pull test

(1) IEC standard:

According to the weight of the product to specify the strength of the test

25 times, 1 second each time.

The displacement should not exceed 2mm

(2) UL standard:

35 pounds, 1 minute.

Displacement should not exceed 1.6mm

• 9) Motor stall test

Place the product on the test platform, lock the moving parts with fixed pliers, paste the thermometer contacts on the overload protector (fuse, thermal fuse, overload protector, overcurrent protector … etc.), and Turn the switch to the maximum gear and input the rated voltage on the nominal plate until the fuse blows.

Requirements after the test: the fuse blows within the nominal value range; the motor must not catch fire; the insulation material of the motor must not peel off, become brittle, carbonized, and other serious damage; the motor must not have electrical or mechanical failure; it can pass the voltage test.

• 10) Mechanical strength (ceiling fan)

Ceiling fans should have sufficient mechanical strength.

Apply a weight load of 4 times the weight of the ceiling fan to the fan body for a loading time of 1 min; apply a torque of 1 N · m to the immovable part of the ceiling fan body for 1 min with a torque meter, and repeat the test in the opposite direction.

After passing the test, the suspension system should not be broken, and the damage of the fan should not affect the requirements for protection against electric shock, electrical strength, and electrical clearance.

• 11) Short-term aging test

Under the input rated voltage, continuous working for 4 hours, there should be no functional failures (such as vibration, noise, etc.), and there should be no melting, damage, or deformation inside.

• 12) Barcode scanning test

Randomly select three color boxes and scan with a bar code machine

• 13) Outer box drop test

Record the weight and size of the outer box and record it correctly in the report.

Do drop test on the outer box according to common international standards.

• 14) Internal process inspection

(1) Reliable protection for live parts

(2) Adequate protection for hazardous moving parts

(3) Impact test of the shell

(4) Parts inspection (check the parts list)

(5) Parts installation position and fixing method

(6) Reliability of electrical connection

• 15) Testing of dangerous moving parts

Use a similar type B test probe to apply a force not exceeding 5N to the grille.

The test probe must not touch dangerous moving parts. (Wind blade, motor)

• 16) Impact test

Impact tests can also be applied to handles, operating levers, knobs, and similar parts, as well as to signal lights and their housings.

Use a spring impactor to impact 3 times with 0.5J ± 0.04J impact energy at every possible weak point of the appliance shell.

After the impact test, the appliance should show no damage in the standard sense, and the protection against electric shock, waterproof rating, creepage distance, and electrical clearance should meet the requirements of the standard.

Electric Fan Common Defects

Below we summarize some of the defects we often encounter in the process of pre-shipment inspection:

• 1. Packaging: The outer box and color box are dirty, damaged, badly pasted, poorly printed, missing parts, etc.
• 2. Safety: The power cord specifications are wrong, damaged, shifted, sharp, sharp, failed safety test, hot, smoke, spark, odor, etc.
• 3. Appearance: dirty, scratched mixed colors, shrinkage, flow marks, bubbles, shrinkage, cracks, poor plating, rust, trachoma, dents, poor assembly, gaps, unevenness, etc.
• 4. Functionality: The product cannot be assembled correctly, the switch is not good, the gear is incorrect, the display indicator is not bright, the function is missing, noise, power deviation, etc.

For more questions on the inspection checklist, please contact AQI Service.

See Quality Inspection Services for other products and industries