Section 4 | Ice Machine Sequence of Operation |
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QF2300
PRIOR TO
When the toggle switch is placed in the “ice” position the following must occur prior to starting an ice making cycle.
A.The bin level probe must be open (bin level light off). If the probe is closed, (bin level light on) when the toggle switch is moved to ICE, the control system waits until the bin level probe opens, (bin level light off) before starting an ice making sequence. If the bin level probe is removed/disconnected the ice machine will not start.
B.The water level probe must be closed (water level light on) to start the compressor. If the water level probe is open, (water level light off) the control system waits until the water level probe closes before starting the compressor.
INITIAL
Immediately after placing the toggle switch into ICE, the dump valve solenoid, and gearbox are energized. After
45seconds the dump valve
1B. Water Fill
After 45 seconds the water float valve solenoid is energized.
2. Freeze Cycle
When water contacts the water level probe the liquid line solenoid valve, equalization valve, compressor and condenser fan motor energize (condenser fan motor is wired through a fan cycling control).
The gear motor, compressor, condenser fan motor and water float valve solenoid remain energized as the ice machine makes ice. The water float valve will open and close automatically to maintain the proper water level.
AUTOMATIC
Ice will build up in the bin until it contacts the bin level probe. After ice contacts the bin level probe for 30 continuous seconds the liquid line solenoid valve, equalization valve and compressor
To allow excess ice to run out, the gear motor and the water float valve solenoid remain energized for an additional 4 minutes, then
3B. Water Drain
To allow water to drain from the evaporator, the dump valve energizes for 90 seconds, then
An
8 Minute Lockout
The bin level light will flash until the
After the 8 minute lockout expires the bin level light will
The 8 minute lockout time can be overridden by moving the ON/OFF/CLEAN toggle switch from ICE to OFF then back to ICE.
FLUSH SEQUENCE IN THE “ICE” POSITION
After the ice machine has run for 100 hours the ice machine will stop making ice and perform a flush sequence. The flush sequence will remove minerals that have settled in the bottom of the evaporator. The entire flush sequence lasts approximately 11 minutes, after which the ice machine automatically resumes ice making and the 100 hour counter in the control board resets to zero.
NOTE: Flake ice machines use an auger to remove ice from the evaporator. Occasional noises (creaks, groans, or pops) are a normal part of the ice making process.
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