ANTRACK V1 User Guide

Declarations

This User Guide provides guidance for the proper use of the ANTRACK V1 Cabinet Liquid Cooling System. It is essential to read all accessory materials and precautions before installation and use. Keep this manual for future reference.

Before use, verify that all product components are complete. Contact BITMAIN for any missing parts.

BITMAIN is not liable for property damage or product damage resulting from:

• Exceeding the warranty period or damage due to abnormal operation or environment.
• Incorrect installation, use, or storage.
• Operation under unspecified working conditions.
• Use in environments not specified by international norms or local laws.
• Repairs or product changes not performed by authorized BITMAIN technicians.
• Use of unauthorized software.
• Other circumstances beyond BITMAIN's liability within the legal scope of the country/region.

Note: For products purchased from non-BITMAIN official channels, BITMAIN does not guarantee the completeness of the manual. Training and services will be provided by the seller.

General Information

This manual is not intended to provide express or implied warranties. Photographs, graphics, charts, and illustrations are for illustrative purposes only and may differ from the actual product. Actual specifications and configurations are subject to change without prior notice.

BITMAIN may make improvements or modifications to the software, hardware, and manual content. If the actual product differs from the manual, the actual product prevails. For the latest information or inquiries, contact BITMAIN.

Changelog

Copyright and Trademarks

Copyright © BITMAIN TECHNOLOGIES INC. All rights reserved.

The content of this manual shall not be disseminated, copied, or forwarded to a third party without BITMAIN's authorization. It shall not be uploaded to public network platforms.

BITMAIN, ANTSPACE trademarks are owned by BITMAIN TECHNOLOGIES INC. Other trademarks are the property of their respective owners.

Software Licensing

• Using or distributing company-developed firmware or software data for commercial purposes is forbidden.
• Decompiling, decrypting, or destroying the original program design of the software is forbidden.

Official website: www.bitmain.com

Contents

1. CHAPTER 1. ABOUT THIS MANUAL
   1. ARTICAL 1 SCOPE OF APPLICATION
   2. ARTICAL 2 TARGET AUDIENCE
   3. ARTICAL 3 MANUAL USE
   4. ARTICAL 4 SYMBOLIC CONVENTIONS
2. CHAPTER 2. SAFETY PRECAUTIONS
   1. ARTICAL 5 GENERAL SAFETY INSTRUCTIONS
   2. ARTICAL 6 ALL SAFETY PRECAUTIONS
   3. ARTICAL 7 ELECTRICAL SAFETY
   4. ARTICAL 8 MACHINERY SAFETY
   5. ARTICAL 9 SAFE TO OPERATE
   6. ARTICAL 10 OTHER
3. CHAPTER 3. OVERVIEW
   1. ARTICAL 11 WORKING PRINCIPLE
   2. ARTICAL 12 SYSTEM COMPOSITION
   3. ARTICAL 13 OPERATION MODE
   4. ARTICAL 14 WORKING PRINCIPLE
4. CHAPTER 4. INSTALLATION
   1. ARTICAL 15 OPEN THE PACKAGE AND CHECK
   2. ARTICAL 16 INSTALLATION PRECAUTIONS
   3. ARTICAL 17 TOOLS
   4. ARTICAL 18 CONNECT POWER CABLES AND NETWORKS
   5. ARTICAL 19 INSTALL HIGH PERFORMANCE SERVERS
   6. ARTICAL 20 ADD COOLANT TO SYSTEM
   7. ARTICAL 21 LIQUID PUMP EXHAUST OPERATION
5. CHAPTER 5. MAINTENANCE
   1. ARTICAL 22 RUNNING THE FAN
   2. ARTICAL 23 POWER ON AND RUN THE SERVER
   3. ARTICAL 24 ROUTINE MAINTENANCE OVERVIEW
   4. ARTICAL 25 COOLANT CHECK
   5. ARTICAL 26 CHECK THE LIQUID COOLING PIPE
   6. ARTICAL 27 CHECK THE AIR COOLED HEAT EXCHANGER
   7. ARTICAL 28 FAN INSPECTION
   8. ARTICAL 29 LIQUID PUMP INSPECTION
   9. ARTICAL 30 WATER COOLED HEAT EXCHANGER APPLICATION CHECK

CHAPTER 1. About this manual

ARTICAL 1 Scope of application

This manual is for ANTRACK V1.

ARTICAL 2 Target audience

This manual is intended for professional technicians in installation, operation, and maintenance. Users should have knowledge of electronics, electrical circuits, machinery, electrical and mechanical schematics, and liquid cooling systems. Professional training in installation and commissioning is recommended, along with the ability to respond to emergencies.

ARTICAL 3 Manual use

Read this manual carefully before use. While contents are updated, slight differences from the actual product may occur; the actual product prevails. Users can download the latest version from www.bitmain.com or sales channels.

ARTICAL 4 Symbolic conventions

The following symbols are used to ensure user safety and optimal product use:

• Danger: Indicates a high potential danger that could result in serious accidents such as personal injury or equipment damage.
• Warning: Indicates a moderate potential hazard that could result in serious accidents such as equipment damage.
• Caution: Indicates a potential danger that, if not avoided, may result in abnormal operation of the equipment.

CHAPTER 2. Safety Precautions

ARTICAL 5 General Safety Instructions

Disclaimer: The company is not responsible for operations beyond specified conditions, use in unspecified environments, failure to follow instructions, or damage caused by anomalous natural environments.

ARTICAL 6 All safety precautions

Pay attention to safety signs and instructions. The symbols used are supplementary to all safety instructions.

1. Comply with local safety regulations when operating equipment.
2. Only trained and qualified personnel should install, operate, and maintain BITMAIN equipment. Only certified or authorized personnel may replace or alter equipment or parts. Report any malfunction or error that could lead to a security issue immediately.
3. Ensure equipment grounding meets requirements. Ground the device first and disconnect last. Do not damage the grounding wire. Operate only with a properly installed grounding wire. Ensure permanent connection to protective ground.

ARTICAL 7 Electrical safety

High voltage: The high voltage power supply can cause fatal danger through direct or indirect contact. Improper high voltage operations may result in fire and electric shocks. Signal cables must be separated from strong electricity and high-voltage cables.

Large leakage current:

• Ground the device before powering on to prevent injury or damage from high leakage current.
• If a "high electrical leakage" tag is present, ground the protective ground terminal before connecting AC power to prevent electric shock.
• Bind bare power cable parts with insulation tape.

Power cord:

• Do not install or remove cables with power on to avoid electric arcs or sparks. Turn off the power switch before installing or removing power cords.
• Check the power cord label for correctness. If damaged, it must be replaced by the manufacturer, service agent, or qualified personnel.
• Appliances should have devices for mains disconnection, pole separation, and complete disconnection under Class III overvoltage conditions, incorporated into fixed wiring.

ARTICAL 8 Machinery safety

Drill: Warning: Do not drill the cabinet without complying with requirements. This can damage internal components, pipelines, and cables. Metal shavings can block pipelines or cause short circuits on PCBs.

Sharp objects: ANTRACK cabinets and heat exchangers are metal. Wear protective gloves when operating near them.

Warning: Wear protective gloves to avoid injury from sharp edges when handling or carrying the device.

Fan: When replacing parts, keep them, screws, and tools in a safe place to prevent them from falling into a running fan. Do not insert fingers or boards into a running fan; wait until it stops.

Heavy objects move:

• Warning: Wear protective gloves when moving heavy objects to prevent scratches.
• Be cautious to prevent injury when moving heavy objects.
• When removing heavy or unstable components, be aware of other unstable objects.
• At least two persons are required to move equipment. Ensure it does not tilt more than 15 degrees from the vertical.
• Protect equipment from scratches or crashes during movement or lifting.
• Do not use a part to support the body when moving equipment, as it may be damaged.

ARTICAL 9 Safe to operate

High temperature and high pressure: Mishandling can lead to excessive pressure and coolant ejection. Pay attention to high-pressure parts like exhaust and drain valves.

High-speed operation: Pay attention to the fan, which operates at high speed.

ARTICAL 10 Other

Tie the signal cable:

• Caution: Signal cables must be bound separately from strong electricity and high-voltage cables.

Laying power cables:

• Lay or install power cables only at temperatures above 0°C. Cables stored below 0°C should be moved to ambient temperature for at least 24 hours before laying. Handle power cords with care, especially at low temperatures.

Stockpile: Do not store the device near heat sources or in direct sunlight. Keep away from ignition sources or hot objects, especially those with pressurized nitrogen or refrigerant, to prevent explosions or leaks.

Recycling and disposal: The symbol indicates that in the EU, the product cannot be disposed of with other waste. Recycle responsibly to promote sustainable material reuse.

CHAPTER 3. Overview

ARTICAL 11 Working Principle

ANTRACK is designed for BITMAIN's water-cooled high-performance computing servers, providing integrated deployment, power supply, and network exchange. It features an integrated air-cooled heat exchanger for liquid cooling within the rack, enabling integrated operation. It also supports liquid-liquid heat exchange for utilizing waste heat or external cold sources.

ARTICAL 12 System composition

ANTRACK comprises a rack body, electric control box, water-cooled heat exchanger, air-cooled heat exchanger, liquid pump, liquid cooling circulation piping, coolant tank, and fans.

1. Rack body: Houses the electric control box, water-cooled heat exchanger, and other components, providing space for servers. Designed for integrated product transportation and handling.
2. Electric control box: Manages main input power, liquid pump, and fan distribution. Adjusts fan operation based on liquid temperature sensors. Configured with distribution and network switches for server power and network exchange.
3. Water cooled heat exchanger: An efficient heat exchanger for liquid-liquid heat exchange. Connects to external cooling water sources to remove heat from servers, enabling waste heat recovery or using cooling towers as a heat source.
4. Air cooled heat exchanger: Dissipates heat from the liquid cooling cycle using air cooling. Works with fans to cool the coolant and expel hot air.
5. Liquid pump: Provides circulating power and flow for the coolant in the liquid cooling cycle.
6. Liquid cooling circulation piping: Connects servers, pump, heat exchangers, and coolant tank to form a circulation system.
7. Coolant tank: Used for adding and replenishing coolant during installation and operation.
8. Fans: Draw air from the front and sides for the air-cooled heat exchanger and expel hot air from the rear.

ARTICAL 13 Operation mode

ANTRACK operates in two modes: air-cooled and water-cooled.

• Air-cooled mode: Utilizes the integrated air-cooled heat exchanger. Requires adequate air paths for inlet and exhaust. Air is drawn from the front and sides, cooled by the heat exchanger, and expelled from the rear. Fans operate based on coolant temperature.
• Water-cooled mode: Connects to an external cooling water source. The external water removes heat through the water-cooled heat exchanger. External water quality requirements include specific pH, Cl, Sulfate ion, and Ammonia ion concentrations. A 30-60 mesh water filter is recommended.

Shutdown state: Turn off all electrical switches, discharge, and recover coolant from the drain valve when ANTRACK is not in use.

ARTICAL 14 Working principle

The principle diagram of the ANTRACK liquid cooling system is as follows:

Exhaust and liquid cooling cycles: After placing ANTRACK, close the drain valve, add ~20L of coolant to the tank, and install servers. Connect server inlet/outlet pipes, open relevant valves. Initial automatic exhaust takes ~5min. Further exhaust can be done by cycling the liquid pump ON/OFF (30s ON, 1min OFF for 3 cycles). After exhaust, the pump circulates coolant through the system.

Coolant specifications: Recommended coolant is antifreeze with a freezing point of -25°C and pH 7.8-8.5. Do not use tap water, lake water, or coolant with pH below 7.5 or containing impurities.

The coolant box has a level switch that disconnects main power if the level is too low.

Air cooling mode operation: When not connected to an external cooling water source, ANTRACK uses air cooling. Fans draw air from the front and sides, cool the coolant, and expel hot air. Fan operation is controlled by coolant temperature.

Water-cooled mode operation: Connects to an external cooling water source. External water removes heat via the water-cooled heat exchanger. Water quality requirements: pH 6-8, Cl ≤50 ppm, Sulfate ion ≤30mg/L, Ammonia ion ≤0.1mg/L. Use a 30-60 mesh water filter.

CHAPTER 4. Installation

ARTICAL 15 Open the package and check

Remove outer packaging and inspect the ANTRACK for any damage to the exterior, coolant tank cover, and connectors. Report any damage to the shipping company immediately.

ARTICAL 16 Installation Precautions

Install the equipment correctly to ensure optimal working conditions and service life. Verify the installation environment meets requirements. The cabinet should be in a building free of water and dust. Maintain at least 1m of air and maintenance space in front and behind the rack. Provide a 400V63A3P power supply switch and a three-phase, five-wire power supply cable for each rack. Ensure suitable power distribution cabinets and cable routing facilities. Network cables should connect to the network switch and the electric control box. If producing hot water or using an external cooling tower, pipeline construction design is required. Ensure proper ventilation in air-cooling mode to prevent hot air recirculation. On-site cable materials and construction must comply with local safety regulations.

ARTICAL 17 Tools

Required tools include:

Note: Crane lifting weight should be 2-20 T.

ARTICAL 18 Connect power cables and networks

Preparation: A 400V63A3P power switch is required per cabinet. Power cables must meet system requirements. Prepare terminals for the ANTRACK electric control box. Recommended cable specifications and terminal requirements are shown in the figure.

Cable specifications:

• Power cable: UL2586 5x6AWG (5x16mm²) -40~105°C 600V.
• Network cable: Cat.5e-FTP with RJ45 plug.

Ensure onsite cable materials and construction comply with local safety regulations.

Connection procedure:

1. Connect power supply and network cables to the ANTRACK electric control box via the top inlet.
2. Lay cables through the cable bridge.
3. Open the front door, loosen panel screws of the electric control box, and remove the panel.
4. Connect PE/N and three-phase wires to the PE bar/N terminal and the inlet end of the QF switch. Connect the RJ45 plug to the P1 port of the switch.
5. Ensure cable terminals are properly inserted and screws are secure. Reinstall the electric control box panel.

ARTICAL 19 Install high performance servers

Open the cabinet door. Servers are equipped with shelf layers, liquid supply/feed valves, outlet valves, and inlet/outlet hoses. Server power and network plugs are also configured.

Place servers on the shelf layers, centered, with the rear against the layer's rear hem. Insert inlet and outlet hoses to the quick connectors.

Note: Do not connect server power and network plugs until after liquid filling, initial exhaust, and pump cycles are complete.

The following diagram shows the server installation:

[Diagram showing server installation within the rack with hoses connected]

ARTICAL 20 Add coolant to system

Coolant specifications: Antifreeze with freezing point -25°C, pH 7.8-8.5. Avoid tap water, lake water, or coolant with pH below 7.5 or impurities.

Filling procedure:

1. Close the cabinet drain valve. Ensure fill valve, exhaust valve, server supply valve, and server outlet valve are open.
2. Unscrew the red cover of the 20L coolant tank and slowly pour in the specified coolant. Initial filling capacity is ~20L. Tighten the tank cover.
3. Avoid spilling coolant and prevent foreign matter entry.
4. Use stable climbing facilities (e.g., ladders) for safety during filling.
5. After filling, let ANTRACK stand for 5min for initial exhaust. Ensure the liquid pump's inlet and outlet tubes are full.

ARTICAL 21 Liquid pump exhaust operation

After initial venting, run the liquid pump for further venting. Turn on the INPUT and PUMP switches. After ~30 seconds of running, turn off the PUMP switch for 1min. Repeat this ON/OFF cycle 3 times. Check for bubbles in pump and server tubes. If no significant bubbles are present, run the pump continuously for 15-30min. Check for coolant leaks, abnormal vibration, or sound.

If any abnormality occurs, stop the pump and contact technical support.

CHAPTER 5. Maintenance

ARTICAL 22 Running the fan

After liquid pump exhaust and continuous operation, turn on the fan switch. Observe the coolant temperature display. Fans start running when the temperature is above 25°C. Monitor fans for 3 minutes for abnormal vibration or sound.

The following is the fan running curve:

[Diagram showing fan running curve based on temperature]

If any abnormality occurs, stop the fans and contact technical support.

ARTICAL 23 Power on and run the server

After the above operations, turn on the server switches. Observe server power-on status. Configure the server, run network settings, and start computation.

Ensure no obstructions within 1 meter of ANTRACK during installation. Components must be securely fixed during transportation, meeting national standards. All cables must meet safety and environmental requirements.

ARTICAL 24 Routine maintenance Overview

Routine maintenance ensures system functionality and prevents failures. It helps personnel:

• Discover and address equipment operation alarms promptly.
• Detect potential risks to prevent failures and reduce customer dissatisfaction.
• Analyze operating trends to improve efficiency.

Daily maintenance points:

1. Read safety precautions and product documents carefully. Comply with local safety regulations. The symbols "Precautions," "caution," "warning," and "danger" are supplementary to all safety precautions. Personnel must have basic safety knowledge, training, and qualifications.
2. Strictly comply with equipment precautions and special safety instructions. BITMAIN is not liable for violations of general safety operating requirements or safety standards.
3. Most repairs require power disconnection. Do not connect power during maintenance unless measuring current, voltage, or temperature, and only after all devices are connected. Disconnect power after maintenance.
4. Electrical maintenance requires protective measures like insulation gloves/shoes and compliance with local laws.
5. Recommended routine inspections for ANTRACK are daily.
6. Caution: Exercise caution during professional maintenance. Consult the Bitmain customer service center. When working at heights, comply with local laws and regulations.

After server installation, insert bellows according to Figure 5-2, ensuring correct tube lengths.

[Diagram showing bellows tube length and installation instructions]

ARTICAL 25 Coolant Check

Observe the coolant level in the tank daily. Low levels (below 1/3) can cause poor heat dissipation, pump vibration/noise, or automatic trip.

Replenish coolant promptly when the level is low.

Test and replace coolant regularly. Use pH test strips to monitor acidity. If pH drops below 7.8, replace the liquid to prevent corrosion and pump wear.

Recommended testing and replacement intervals:

When replacing liquid, drain old liquid completely and refill with fresh coolant as per ARTICAL 20. Exhaust air from the system after refilling.

If foreign impurities are found, shut down, clean the system, and replace the coolant.

ARTICAL 26 Check the liquid cooling pipe

Observe liquid cooling pipe joints daily for leaks. If leaks are found, stop the machine, check, and tighten. Replace damaged joints.

If transparent server bellows vibrate excessively, replace them with smooth hoses from the delivery accessories.

ARTICAL 27 Check the air cooled heat exchanger

Check for sundries, dust, and impurities around and inside the cabinet. Clean promptly to ensure unobstructed air paths. Clean dust or foreign matter from the front/side door mesh and the air-cooled heat exchanger surface. Investigate the source of dust and take preventive measures.

ARTICAL 28 Fan inspection

Observe fan noise and vibration daily. Contact technical personnel for confirmation or necessary replacement/maintenance.

ARTICAL 29 Liquid pump inspection

Observe liquid pump running noise and vibration daily. Contact technical personnel for confirmation or necessary replacement.

ARTICAL 30 Water cooled heat exchanger application check

When using the water-cooled heat exchanger, monitor external water source quality: pH 6-8, Cl ≤50 ppm, Sulfate ion ≤30mg/L, Ammonia ion ≤0.1mg/L. Monitor flow/pressure and check the cleaning water filter for anomalies.