Note: It is forbidden to use pure water or tap water within areas with high risk on freezing, must use the relative anti-icing fluid; required to use the related tools such as air pump to clean up the liquid within the hydro board for certain circumstances, such as rework, transfer or storage activities. Please use a plug to block the water inlet and outlet before packaging.
1. Case Study
Below issue was found out when customer performing rework:
i) Water leakage on the hydro board
ii) Water leakage due to bulging on brazing area, which as shown below:
iii) The connecter was cracked due to expansion as photos shown below:
2. Root cause analysis
As understand from customer, this was caused by the huge differences between room temperature of 23 degree Celsius and outdoor temperature of -17 degree Celsius, customer did not dry the board after disassembled the machine, which caused the water freeze inside the hydro board to expand and exploded or even damage the bulge.
3. Precautions
During operation and maintenance
It is forbidden to use pure water or tap water within areas with high risk on freezing, must use the relative anti-icing fluid;
Refer to below link for the anti-icing fluid:
https://support.bitmain.com/hc/zh-cn/articles/8233664741913
When returning for repair
Required to use the related tools such as air pump to clean up the liquid within the hydro board for certain circumstances, such as rework, transfer or storage activities.
Also please use a plug to block the water inlet and outlet before packaging.
4. Risk
If the liquid was not dried during the rework or movement, it will cause the leakage issue to happen, if the liquid flow down to the hashboard accidentally, may cause the board to be burnt and scrapped when the hashboard is open source. If the liquid flow down to the packaging box, it will damage the packaging box as well.
If it is within the low temperature area, the expansion which caused by the freezing of liquid will damage the hydro board and connector.
Please be noted all of the above issues may void the warranty, please be more cautions!
Comments
1 comment
For daily maintenance and repair of hydro mining machines, it's crucial to follow these guidelines to avoid common issues such as water leakage and damage caused by temperature differences. Based on your case study and recommendations, here's a summary of best practices:
### Key Precautions:
1. **Avoid Using Pure or Tap Water**: In areas where freezing is a risk, always use an appropriate anti-icing fluid. Using pure or tap water can lead to freezing, which may cause damage to the machine.
2. **Use Proper Tools for Cleaning**: When performing tasks like rework, transfer, or storage, use tools such as air pumps to thoroughly clean out any remaining liquid within the hydro board. This will prevent issues caused by residual liquid.
3. **Block Water Inlets/Outlets Before Packaging**: Always ensure the water inlet and outlet are properly plugged before packaging the machine to avoid leakage during transport or storage.
### Case Study Issue:
- **Water Leakage**: Found on the hydro board and in brazing areas due to freezing.
- **Connector Cracks**: Caused by liquid freezing and expansion when temperature drops from 23°C to -17°C.
### Root Cause:
- Water was not dried after disassembling, causing freezing and subsequent damage to the hydro board and connectors due to expansion.
### Risks:
- Failure to dry the hydro board may lead to leakage, potentially damaging the hashboard and burning it out.
- Packaging can also be compromised if liquid is not properly dried, leading to water damage.
- Freezing can result in significant damage to both the hydro board and connectors in low-temperature areas, which could void the warranty.
By adhering to these precautions and regularly inspecting for potential issues, you can avoid common maintenance pitfalls with hydro mining machines and extend their longevity. If you need more details on tera downloader, lemme ask from us.
Please sign in to leave a comment.