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Components Energized when the Control Switch is in the WASH Position
The WASH position on the control switch is used when cleaning and sanitizing the unit. When in the WASH
position, power is supplied to the pump motor. With the cleaning valve closed, the cleaner and sanitizer flow
over the outside of the evaporator plate assembly. With the cleaning valve open, the cleaner and sanitizer
flow over both the outside and the inside of the evaporator plate assembly.
Note: Close the cleaning valve after cleaning and sanitizing are complete, otherwise the unit will not re-start
when the control switch is placed in the ICE position.
Legend:
Comp - compressor
FMR - remote fan motor
FMS - self-contained fan motor
F/S - float switch
HGV - hot gas valve
PM - pump motor
WV - inlet water valve
KM-650MAH, KM-650MWH, KM-650MRH Sequence Flow Chart and Component Operation
1. One Minute
Fill Cycle
2. Harvest Cycle 3. Freeze Cycle
4. Pump-Out
Cycle
Cycle Steps
WV Energized
F/S open
F/S closed
Comp energized
HGV energized
FMR energized
WV continues
Thermistor temp
reaches 48°F (9°C)
(3.9 kΩ or less)
Harvest timer starts
F/S open
Comp continues
FMR continues
HGV de-energized
WV de-energized
PM energized
FMS energized
F/S closed
Freeze cycle
operation turned
over to F/S
Pump motor stops
for 2 sec. and then
reverses for 10/20 sec.
each 1, 2, 5, or 10 cycles.
Comp continues
FMR continues
HGV energized
FMS de-energized
F/S Check
F/S Check
• Maximum inlet water valve time: 6 minutes
• Maximum harvest time: 20 minutes
Thermistor in
control
1 to 3 minute timer
in control
• Minimum freeze time: 5 minutes
• Maximum freeze time: freeze timer setting
5 minute timer
in control
F/S in
control
Initial startup always
begins here
"E" board will have
5 second delay
If F/S is open, compressor stops and cycle returns to 1 minute fill