BITMAIN Antminer S21+ 216T ASIC Miner User Manual

1. Important Safety Information

Please read all safety instructions carefully before operating the Antminer S21+ 216T. Failure to comply with these instructions may result in electric shock, fire, or damage to the device.

• Electrical Safety: This device operates on 220-277V AC. Ensure your power supply meets these requirements. Use only the provided power cord or a certified equivalent. Do not operate with damaged cables.
• Ventilation: The Antminer S21+ 216T is an air-cooling miner. Ensure adequate airflow around the device to prevent overheating. Do not block air intake or exhaust vents. Maintain a minimum clearance of 20 cm (8 inches) on all sides.
• Environment: Operate the miner in a clean, dry, and well-ventilated environment. Avoid extreme temperatures, high humidity, and dusty conditions.
• Handling: The device is heavy (approximately 22 kg). Use proper lifting techniques or assistance when moving.
• Maintenance: Disconnect power before performing any maintenance or cleaning. Do not open the casing unless instructed by support personnel.

2. Product Overview

The BITMAIN Antminer S21+ 216T is a high-performance ASIC miner designed for SHA256 algorithm cryptocurrencies such as Bitcoin (BTC), Bitcoin Cash (BCH), and Bitcoin SV (BSV). It features an air-cooling system for efficient heat dissipation.

This image displays the BITMAIN Antminer S21+ 216T, an air-cooled ASIC miner. The front features two large cooling fans, while the side shows three smaller exhaust fans and the power switch. The control board with Ethernet ports is visible at the top.

3. Setup Guide

3.1 Unpacking

• Carefully remove the Antminer from its packaging.
• Inspect the device for any signs of physical damage during transit. If damage is found, contact your vendor immediately.
• Ensure all components are present: Antminer S21+ 216T unit, power cord (P13 to C20).

3.2 Placement

• Place the miner on a stable, flat surface in a well-ventilated area.
• Ensure there is sufficient space (at least 20 cm or 8 inches) around all sides of the miner for proper airflow.
• Avoid placing the miner near heat sources or in direct sunlight.

3.3 Electrical Connection

• Connect the power cord to the miner's power input.
• Connect the other end of the power cord to a grounded electrical outlet that provides 220-277V AC.
• Ensure the electrical circuit can handle the miner's power consumption of 3564W.

3.4 Network Connection

• Connect an Ethernet cable from your router or network switch to the Ethernet port on the miner's control board.
• Ensure a stable internet connection is available.

4. Operating Instructions

4.1 Initial Power On

• After connecting power and network, flip the power switch on the miner to the 'ON' position.
• The miner's fans will start, and indicator lights on the control board will illuminate.

4.2 Network Configuration

• To access the miner's web interface, you will need its IP address. You can find this using an IP scanner tool on your network or by checking your router's connected devices list.
• Open a web browser and enter the miner's IP address.
• Log in using the default credentials (refer to the manufacturer's documentation for default username and password, typically 'root' for both).

4.3 Mining Pool Configuration

• Within the web interface, navigate to the 'Miner Configuration' or 'Pool Settings' section.
• Enter the URL, username, and password for your chosen SHA256 mining pool. It is recommended to configure at least two backup pools.
• Save the settings and restart the miner if prompted.

4.4 Monitoring

• Monitor the miner's status, hash rate, and temperature through the web interface.
• Ensure the hash rate is stable and temperatures are within acceptable operating ranges to prevent damage and ensure optimal performance.

5. Maintenance

5.1 Cleaning

• Regularly inspect the miner for dust accumulation, especially on the fans and heatsinks.
• Before cleaning, always power off the miner and disconnect it from the power source.
• Use compressed air to gently remove dust from the fans and internal components. Do not use liquids or abrasive cleaners.

5.2 Firmware Updates

• Periodically check the official BITMAIN website for firmware updates.
• Firmware updates can improve performance, stability, and security. Follow the manufacturer's instructions carefully when performing updates.

6. Troubleshooting

This section provides solutions to common issues you might encounter.

6.1 Miner Does Not Power On

• Check if the power cord is securely connected to both the miner and the electrical outlet.
• Verify that the power switch is in the 'ON' position.
• Ensure the electrical outlet is providing power and meets the 220-277V AC requirement.

6.2 No Network Connectivity

• Check if the Ethernet cable is securely connected to both the miner and your router/switch.
• Verify that your router/switch is functioning correctly and has an active internet connection.
• Restart your router/switch and the miner.

6.3 Low Hash Rate or No Mining Activity

• Check your mining pool settings in the web interface to ensure they are correct.
• Verify your internet connection speed and stability.
• Monitor the miner's temperature. Overheating can cause performance degradation. Ensure proper ventilation.
• Consider performing a firmware update if available.

6.4 Overheating

• Ensure the miner is in a well-ventilated area with adequate clearance around all sides.
• Clean any dust accumulation from the fans and vents.
• Verify that all fans are operating correctly.

If you continue to experience issues, please refer to the Support section.

7. Specifications

8. Warranty Information

The BITMAIN Antminer S21+ 216T comes with a 365-day warranty from the date of purchase. This warranty covers manufacturing defects and hardware failures under normal operating conditions.

Please note the following:

• The warranty does not cover damage caused by improper installation, misuse, unauthorized modifications, or operating outside specified environmental conditions.
• Due to the special nature of mining equipment, returns not due to product failure may be subject to a return fee (e.g., 30% of the product price).
• Keep your proof of purchase for warranty claims.

9. Support

For technical assistance, warranty claims, or further inquiries regarding your Antminer S21+ 216T, please contact your vendor or the manufacturer's official support channels.

• Vendor Support: For purchases made from WJSP MINING, please contact their customer support directly.
• Manufacturer Support: Visit the official BITMAIN website for comprehensive support resources, FAQs, and contact information.