Control Board with Harvest Pump Timer Operation

"G" Control Board with Harvest Pump Timer Operation Flow Chart

1. 1-Minute

Cycle

2. Harvest Cycle

3. Freeze Cycle

4. Pump-Out Cycle

Steps

Fill Cycle

• WV time: 6 min. or the length of harvest minus 50

• Min. freeze time: 5 min.

• Factory set for every

sec. (S4 dip switch 7), whichever is shorter. Do not

• Max. freeze time: freeze timer setting

10th cycle

adjust S4 dip switch 7 out of the factory position.

(S4 dip switch 9 & 10)

(S4 dip switch 5 & 6)

• Max. harvest time: 20 min.

• Pump motor stops for

2 sec., then reverses

Thermistor

1 to 3-min. harvest timer in

5-min. timer

for 10/20 sec.

(S4 dip switch 3 & 4)

FS in control

in control

control (S4 dip switch 1 & 2)

in control

Harvest Pump

Timer

Startup

50 sec.

FS check

FS closed

PM energized

FS check

FS closed

FS opens or

WV de-energized

Comp continues

WV energized

Comp energized

freeze timer

Thermistor temperature

FMR continues

FM continues

terminates

FMR energized

reaches 48°F (9°C)

HGV energized

FS open

HGV energized

FMR continues

(3.9 kΩ or less).

PM de-energizes for 2 sec.,

WV energized

PM continues

Harvest timer starts.

FS open

then reverses for 10/20 sec.

LLV energized

HGV de-energized

FM de-energized

If FS is open, Comp stops and cycle returns to 1-Min. fill.

(FM continues on KM-1601SAH)

LLV de-energized

Shutdown

1. Bin Full

2. Icemaker Off

3. Ice Level Lowered

and Restart

Within 10 sec. after ice contacts BC bulb,

All components

No ice touching BC bulb.

icemaker shuts down.

de-energized.

Icemaker starts at

"1. 1-Minute Fill Cycle."

To 1. 1-Minute Fill Cycle

Operation

2. "G" Control Board with Harvest Pump Timer Operation

Ice contacts BC bulb

Legend:

BC–bin control Comp–compressor FM–fan motor FMR–fan motor-remote FS–float switch HGV–hot gas valve LLV–liquid line valve PM–pump motor WV–inlet water valve

BC open	BC closed
All components	NOTE: Green "BC CLOSED" LED on continuously
de-energized	when the K4 jumper is in place.
	when the K4 jumper is in place.

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 restart when the control switch is placed in the "ICE" position.