Hoshizaki KM-630MWF - Manual (Page 56)

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[2] Remove the water from the potable water supply line:
1) Remove the Front Panel. (Except water-cooled model)
2) Move the Control Switch, on the Control Box, to the “OFF” position.
3) Wait 3 minutes.
4) Close the Potable Water Supply Line Shut-off Valve and open the Potable Water
Supply Line Drain Valve.
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) Turn off the power supply.
2) Move the Control Switch to the “OFF”
position.
3) Drain the Water Tank by removing the
base cover and one end of the pump
tubing. See Fig. 4.
4) Replace the removed parts in their correct
positions.
5) Remove all ice from the Storage Bin, and
clean the Storage Bin.
6) Replace the Front Panel in its correct
position.
7) Close the Drain Valve.
Fig. 4