Hoshizaki TM-500AAE, Service Manual

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[c] FLUSH WATER VALVE
The Flush Water Valve is energized to open and flush out the Tank (100V AC) after the icemaker
shuts down and every 12 hours when the Storage Bin is used.
[d] DRAINING ICEMAKER IN SUBFREEZING CONDITIONS
In winter, the water circuit must be completely drained out or otherwise protected to prevent
freeze-up and damage before shutting down the icemaker at night.
1) Close the Water Supply Line Shut-off Valve to stop water supply.
2) Open the Air Shut-off Valve.
3) Press the Stop Button, and drain the Float Tank and Evaporator.
4) Turn off the icemaker.
Before restarting the icemaker:
1. Close the Air Shut-off Valve.
2. Open the Water Supply Line Shut-off Valve.