Hoshizaki KM-250BWF - Manual (Page 46)

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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) Disconnect the power supply.
2) Move the control switch to the “OFF” position.
3) Open the door.
4) Remove the plug at the bottom of the water tank to
drain the water tank. See Fig. 3.
5) Replace the plug in its correct position.
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.
Fig. 3