What are the steps to replace the Antminer S21pro cooling fan?

The Martech DF1403812B2FN is specifically used to replace malfunctioning chassis fans in the Antminer S21pro. With a current rating of 5A, a voltage of 12V, a rotational speed of 7000RPM, and dimensions of 140*140*38mm, the interface is 4pin square port. Equipped with maintenance-free double ball bearings, this cooling fan provides ample and stable airflow, making it sturdy and durable.

When the chassis fan operates under high loads for extended periods, it may lead to inadequate heat dissipation and reduced fan speed, subsequently causing the device's temperature to rise, performance to decline, and power consumption to increase. Timely replacement of faulty fans is crucial to help miners maintain proper heat dissipation.

Instructions for replacing the Martech chassis fan in Antminer S21pro:

• The first step is to check the miner's background operation log to identify and record the serial number of the faulty fan.

• Perform a safe shutdown operation, ensuring the miner is completely powered off before disconnecting the power cord. Remove the protective cover on the top of the control board and gently unplug the fan connector.

• Compare the fan connectors on the control board with the previously recorded serial numbers to precisely locate the faulty fan. Using appropriate tools, loosen and remove the fixing screws of the fan, simultaneously taking off the protective grille along with the fan.

• Before installing the new fan, carefully verify the label information of the new DF1403812B2FN cooling fan to confirm that its model matches the miner perfectly. Also, observe the overall appearance of the fan for any visible dents or damages, then check that its wires are intact and show no signs of breaks or wear.

• To facilitate subsequent installation, pre-assemble the fan with the protective grille and prepare for fixing.

• Align the new fan with the holes on the control board, firmly tighten all screws to ensure the fan is securely installed and positioned correctly.

• Reinstall the protective cover plate removed earlier and correctly insert the fan connector into the corresponding port, applying moderate force to ensure a tight and reliable connection.

• Power on the miner and closely observe the operation of the new fan to confirm that it is working normally and without any abnormal noises.

Excellent heat dissipation performance is a critical factor for miners to achieve stable and efficient mining. It not only directly relates to the mining efficiency but also profoundly affects the long-term service life of miners. We must attach great importance to the timely replacement of faulty components to ensure that the heat dissipation system of miners is always maintained in an optimized state, thereby achieving more considerable profits.