Hoshizaki Condensing Unit Models SRK-14J/3, KMS-1401MLJ G Control Board Sequence Flow Chart

15

"G" Control Board Sequence Flow Chart

KMS-1401MLJ with SRK-14J/3

2.

Sequence

Cycle

1. 1-Minute

2. Harvest Cycle

3. Freeze Cycle

4. Pump-Out Cycle

Steps

Fill Cycle

• WV2 time: 6 min. or the length of harvest minus 50 sec.

• Minimum freeze time: 5 min.

Factory set for every

(S4 dip switch 7), whichever is shorter.

• Maximum freeze time: freeze timer setting

10th cycle.

• Maximum harvest time: 20 min.

(S4 dip switch 9 & 10).

(S4 dip switch 5 & 6)

Thermistor

1 to 3-min. harvest timer in control

5-min. minimum

F/S in control

Flow

in control

(S4 dip switch 1 & 2)

Chart

freeze timer in

Harvest Pump

control

Timer

Refill

Startup

50 sec.

1 min.

F/S check

F/S closed

F/S check

F/S closed

F/S opens or freeze

WV1 energized

Comp energized

PM energized

Comp continues

timer terminates

Comp continues

WV2 de-energized

FMRs energized

FMRs continue

FMRs continue

F/S open

HGVs energized

Thermistor temperature reaches

PM continues

HGVs energized

WV2 energized

LLVs energized

DV & PM de-energized 2 sec., then

48°F (9°C) (3.9 kΩ or less).

WV1 de-energized

WV1 energized first 1 min. of freeze

energized for 10/20 sec.

Harvest timer starts (1 to 3 min.).

HGVs de-energized

LLVs de-energized

F/S open

If F/S is open, Comp stops and cycle returns to 1-min. fill.

Shutdown	1. Bin Full
and Restart	Shutdown Delay:

•Fill Cycle – 15 sec. after activation.

•Harvest Cycle – At the end of the harvest cycle, or up to 15 sec. into the freeze cycle if activated at the end of the harvest cycle.

•Freeze Cycle – 15 sec. after activation if activated at least 15 sec. before the 5-min. short cycle protection timer terminates. Otherwise, at the end of the next harvest cycle.

BC Operation

2.Icemaker Off

All components de-energized.

3.Ice Level Lowered

Icemaker starts at "1. 1-Minute Fill Cycle."

To 1 above

BC open (BC actuator paddle engaged)

Green "BC CLOSED" LED off

Yellow "BC OPEN" LED on

Legend:

Comp-compressor

DV-drain valve

FMRs-fan motors-remote

F/S-float switch

HGVs-hot gas valves (KMS and SRK)

LLVs-liquid line valves (KMS and SRK)

PM-pump motor

WV1-fill/refill water valve

WV2-harvest water valve

Yellow "BC OPEN" LED continues BC closed (BC actuator paddle disengaged)

All components de‑energized Green "BC CLOSED" LED on

Yellow "BC OPEN" LED off

Components Energized when the Control Switch is in the "SERVICE" Position

When in the "SERVICE" position, the control switch supplies power to the service switch and the icemaker is in service mode. The service switch has three positions: "DRAIN," "CIRC." and "WASH." See the information below for details of each function.

DRAIN	Power is supplied to the pump and drain valve. This drains the water tank.
CIRC.	Power is supplied to the pump only. This operation can be used to circulate cleaner and
	sanitizer over the outside surface of the evaporator for extended periods of time.
WASH	Power is supplied to the pump and wash valve. This operation is used to circulate cleaner
	and sanitizer over both the inside and outside surfaces of the evaporator.