Hoshizaki KM-150BAF Instruction Manual page 15

4) Close the Potable Water Supply Line Shut-off Valve and open the Potable Water Supply
Line Drain Valve. See Fig. 1.
5) Allow the line to drain by gravity.
6) Attach compressed air or carbon dioxide supply to the Potable Water Line Drain Valve.
7) Move the Control Switch to the "ICE" position.
8) Blow the potable water line out using compressed air or carbon dioxide.
[3] Drain the Potable Water Tank:
1) Disconnect the power supply.
2) Move the Control Switch to the "OFF" position.
3) Open the Door.
4) Remove the Cube Guide and the Overflow Pipe to drain the Water Tank.
5) Place the Overflow Pipe and the Cube Guide in their correct positions.
6) Remove all ice from the Storage Bin, and clean the Storage Bin.
7) Shut the Door.
8) Replace the Front Panel in its correct position.
9) Close the Drain Valve.
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