Ant S9 is a bitcoin mining machine, and the radiator is an important part to ensure its normal operation. If the heat sink of S9 needs to be cleaned or replaced, it can be removed as follows:

1. First, turn off the mining machine and unplug all power and data cables to ensure safety.

2. Turn S9 to the back, remove all screws with a screwdriver, and remove the cover plate of the chassis.

3. In the chassis, locate the radiator and fan assembly. The heat sink is an aluminum heat sink connected to the mining machine chip, which is usually black. The fan assembly is fixed outside the radiator.

4. Remove the fan assembly. It is usually necessary to remove two screws to unlock the fan.

5. Use a flat tool, such as a screwdriver or a plastic card, and gently push the radiator to loosen it from the chip. Don't pull hard to avoid damaging the chip.

6. Once the radiator is loose, it can be easily removed from the chip.

7. Clean or replace the radiator. If there is dust or accumulated dust on the heat sink, it can be cleaned with a pneumatic tank or a small brush. If the heat sink needs to be replaced, you can buy suitable replacement parts in the market.

8. Put the new heat sink back on the chip and reinstall the fan assembly to the outside of the heat sink.

9. Finally, re-fix the cover plate of the chassis, plug in all power supplies and data lines, start the mining machine, and check whether it works normally.

These are the basic steps to remove the ant S9 radiator. It should be noted that care should be taken when removing the radiator to avoid damaging the chip and other components. If you are not sure how to proceed, it is recommended to seek professional help.