Antminer KS5pro 120mm Nidec cooling fan replacement instructions

The Nidec 12V 1.65A 6000RPM cooling fan, measuring 120 * 120 * 38mm, model W12E12BS11B5-07, produces 69dBA of noise, a 4Pin socket supporting PWM functionality, and delivers an airflow of 197CFM, making it ideal for the Antminer KS5pro. The full-copper motor equipped with dual ball bearings offers powerful wind force and ultra-low noise, providing stable heat dissipation for our device. Of course, it is also suitable for more other models of mining machines, such as Antminer S21, T21, KS5, KA3, L7, S9, D7, 19 series, 17 series.

Identifying a faulty cooling fan:

a. Check for visible damage on the fan's exterior.

b. Feel for abnormal vibrations or listen for unusual noises.

c. Use software to monitor fan speed.

d. Measure nearby hardware temperatures for abnormal heat levels.

e. Inspect the power supply and circuitry for integrity.

Replace the fan promptly upon detecting any issues to ensure proper heat dissipation and device operation.

How to replace the cooling fan in Antminer KS5pro?

Shut down and disconnect power:

• First, make sure the device is completely turned off and disconnect the power cord to prevent electric shock or damage to the device.

Remove the faulty fan:

• Unscrew the fixing screws of the faulty cooling fan and carefully remove it from the miner.

• Detach the protective grill from the fan for easier access to the replacement.

Inspect the new fan:

• Thoroughly examine the new Nidec W12E12BS11B5-07 cooling fan for any signs of damage or defects.

Install the new cooling fan:

• Align the grille of the new fan with the screw hole of the fan, pass the screw through the hole, and tighten.

• Position the new fan against the screw holes on the miner box side and tighten firmly using an electric screwdriver, ensuring both the fan and grill are securely mounted.

Connect the fan cable:

• Find the fan interface on the miner and connect the connection cable of the new fan to the corresponding interface.

• Verify the connection is tight and free from loose connections or short-circuit risks.

Restart the miner and check:

• Reconnect the miner's power supply and start the device.

• Observe the new cooling fan's operation, listening for abnormal sounds or vibrations.

• Check if the temperature of the miner returns to normal to ensure good heat dissipation.

Installing a Nidec 12V 1.65A fan in our Antminer KS5pro significantly enhances heat dissipation, ensuring stable operation at optimal temperatures, prolonging equipment lifespan, improving mining efficiency, and reducing maintenance costs, a crucial step towards maintaining a profitable mining operation.