![HARVEST SEQUENCE 5. Water Purge](/images/new-backgrounds/38713/3871369x1.webp)
Section 3 | Ice Machine Operation |
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HARVEST SEQUENCE 5. Water Purge
The water pump continues to run, and the water dump valve energizes for 45 seconds to purge the water in the sump trough. The water fill valve energizes (turns on) and
After the 45 second water purge, the water fill valve, water pump and dump valve
6. Harvest
The harvest valve(s) remains open and the refrigerant gas warms the evaporator causing the cubes to slide, as a sheet, off the evaporator and into the storage bin. The sliding sheet of cubes swings the water curtain out, opening the bin switch. The momentary opening and re- closing of the bin switch terminates the harvest sequence and returns the ice machine to the freeze sequence (Step 3 - 4.)
AUTOMATIC SHUT-OFF 7. Automatic Shut-Off
When the storage bin is full at the end of a harvest sequence, the sheet of cubes fails to clear the water curtain and will hold it open. After the water curtain is held open for 7 seconds, the ice machine shuts off. The ice machine remains off for 3 minutes before it can automatically restart.
The ice machine remains off until enough ice has been removed from the storage bin to allow the ice to fall clear of the water curtain. As the water curtain swings back to the operating position, the bin switch
Figure 3-4. Automatic Shut-Off (Typical Q450
Shown)
Figure 3-3. Harvest Sequence (Typical Q450 Shown)
Part Number 000001114 |