1. How can I change the default name of the miner?

Double click the IP address of the miner you want to change its name in WhatsMinerTool to enter its backend. Details are shown in the following figure.

2. If I restart the PSU and let the miner cool down before a power outage and then shut the miner down, and I do this operation every two days, will it not reduce the lifespan or cause damage to the miner?

It may affect the PSU lifespan, reboot the miner by WhatsMinerTool before turning the miner off instead of pulling out power supply cable directly.

3. How to safely shut the miner down if the ambient temperature is too high?

You can put it into a standby mode or shut it down.

To put it into the standby mode, you can select "Suspend Mining" in WhatsMinerTool.

To shut it down, you can unplug the power supply cable.

4. If the liquid cooling temperature exceeds a safe threshold, does the miner fail to automatically reduce its power? Must we manually lower the power setting (e.g., from High to Medium) to prevent overheating?

As temperature increases, warning error codes will be triggered and hashrate will drop. However, if the temperature reaches 70℃, the protection mechanism will be activated, automatically stopping hashing.

5. What can be done when the hydro-cooling miner itself becomes too hot?

You could try to reduce the inlet temperature and increase the flow rate of the hydro-cooling miner.

6. Is there a way to do a factory reset?

Long press "RESET" button on the miner could reset it originally.

7. For hydro-cooling miners, what is the inlet and outlet temperature range before the machine automatically reduces hashrate?

Ensure the inlet temperature is maintained within 20°C ~ 40°C.

8. How long does it take to shut down all hydro-cooling miners in a cabinet?

There are two methods to shut down all miners, both of which can be completed in a few seconds, achieving a quick shutdown

1) Turn off PDU (Power Distribution Unit).

2) Using WhatsMinerTool for batch operations: You can remotely stop a mining process by selecting relevant options in Remote Control function.

These two methods can be completed in just a few seconds, ensuring that all miners can be shut down quickly.

9. The miner is running well, but it takes 50 minutes to complete frequency up-conversion. Please confirm if this is normal?

This is normal. It takes 30-60 minutes to complete frequency search.

10. If the ambient temperature is normal, at what temperature do hashboard and chip need to reach before replacing thermal grease? What other parameters should I check to determine when to replace the thermal grease?

If the temperature of the hashboard exceeds 75°C when the ambient temperature is normal, you need to check the thermal grease.

If there is no issue with the temperature of the hashboard, then there is no need to replace it.

11. Can an air cooling miner (Series 50, 60) be equipped with an additional fan, and what is fan capacity?

Installing an additional fan on an air cooling miner (Series 50, 60) is not supported. The fan capacity is 350 cubic feet per minute (CFM).

12. Within what temperature range of inlet and outlet liquid for a hydro-cooling miner can the miner operate normally (maintaining power)?

15℃-20℃

13. What safety safeguards does a hydro-cooling miner have in exceptional and emergency situations?

In exceptional and emergency situations (such as overheating and overcurrent), a hydro-cooling miner can automatically activate protection. Additionally, a fire-prevention device must be properly equipped as a critical safeguard.

14. How are three hashboards distinguished in an air cooling miner?

Refer to the following figure for details.

15. What is the ambient temperature of a control board of an air cooling miner？

The ambient temperature is 30°C-35 °C (on control board).

16. What are the maximum and minimum wet bulb temperatures allowed for M63 series hydro-cooling miners?

The wet bulb temperature is -25 °C~50 °C.

17. What are the maximum and minimum dry bulb temperatures allowed for M63 series hydro-cooling miners?

The dry bulb temperature is -25 °C~55 °C.

18. What is an allowable outlet temperature range for M63 series hydro-cooling miners?

In the normal mode, the maximum outlet temperature is 70 °C.

19. If I want to shut the miner down completely, what is the best way to do that? I do not want to mine constantly.

You could set it by a feature of mining control in WhatsMinerTool.

You can select Resume Mining or Suspend Mining.

20. Regarding the hydro-cooling miner, what the required deltaT is between inlet and outlet temperatures?

For the hydro-cooling miner, under the condition of a flow rate of 10L/MIN, the deltaT is about 10°C in a normal mode, and the deltaT is about 14.5°C in a high performance mode.

21. What range should the temperature of the hashboard be for it to be ideal?

The range for the hashboard being lower than 80 degrees Celsius is ideal.

22. What is the decibel level of noise produced when the hydro-cooling miner or immersion cooling miner operates?

The hydro-cooling miner or the immersion cooling miner operates with almost no noise, and the noise level depends on the supporting system.

23. Can the fan be disabled from rotating through operations in the software?

At present, you are unable to perform relevant operations in the software to disable the fan, but we will consider developing such a feature in the future. Now you can perform related operations on the fan through the API, as detailed in the API documentation on our official website.

24. How high is the chip temperature when the coolant temperature reaches 80 degrees Celsius? Is this high temperature harmful to the miner in the long term?

The temperature of chips varies among different models, and the temperature also varies under different operating power. Don't worry too much about the temperature of the chip, there are some protection mechanisms inside the miner to protect it.

In the long term, the high temperature may cause high-temperature corrosion, which in turn can have an impact on the miner. There may be such a possibility, but there is currently no large amount of data to support it.

25. Where does the miner measure the temperature?

There are hundreds of temperature sensors inside the miner that can measure the temperature.

26. How do I disable individual hashboard?

At present, this function cannot be achieved through software, but you can unplug the connection cable of the hashboard you want to disable to disable the individual hashboard.

27. What is maximum temperature difference between a liquid outlet and a liquid inlet of M63 series?

For M63 series, the maximum temperature difference between inlet liquid and outlet liquid depends on the type of the coolant and rated flow at that time. For example, if your select pure water (or distilled water) + special corrosion inhibitor as a liquid medium, and the rated flow at that time is 10 L/min, the temperature difference between inlet and outlet corresponds to 10 L/min is close to 10 ℃ @ normal mode, 14 ℃ @ high performance mode. For another example, if your select different concentrations of ethylene glycol or propylene glycol as antifreeze + pure water (or distilled water) + special corrosion inhibitor as a liquid medium, the temperature difference between inlet and outlet will vary with the concentration of ethylene glycol or propylene glycol and rated flow rate at that time.

You can see the following table for details.

28. What is the minimum (coldest) temperature M63 series can take in?

At present, M63 series can operate normally at -15 °C, but its performance may not be as good as it operates at normal temperatures, and the same applies to M63, M63S, and M63S++.

29. What is custom made power supply cable of M63 series?

It is suggested to use a power cable with a current more than or equal to 16A, you can refer to the following figure for details. For other models of miners, their customized power supply cables can also be understood in the same way. Basically, air cooling miners （excluding M61 series） use power supply cables of the same specifications, and hydro-cooling miners (excluding M64 series) and immersion cooling miners are also the same.

30. When the inlet temperature of hydro-cooling miners and immersion cooling is controlled at what degree Celsius, will their hashrate be maintained at a high level?

Generally, it is around 45 degrees Celsius, with some variations among different miners, but within a temperature range specified in the product manual.