11
State
1
4
6
7
8
1
2
6
7
1
2
1
2
ON OFF
ON OFF
ON
*1
*1
*1
OFF
15 sec
*2
15 sec
*2
*2
ON OFF
15 sec
15 sec
ON OFF
Hi
gh
Low
OFF
50 sec
Hi
gh
Low
OFF
ON OFF
100% 60% 30% 0%
7-Segment Display
Operation
State
0
When power supply is turned on at startup, hot gas valve
energizes. After 30 seconds, State 1 starts.
State
1
After compressor energizes at startup or freeze cycle end
s, water tank opens until cam switch detects cam location while
water is supplied for harvest cycle.
If evaporator has no ice, water plate switch turns off, compres
sor keeps running, and water tank fully opens.
* The above operation is also made at high ambient temperatures
where ice is easy to harvest.
State
2
If freeze cycle ends and evaporator has ice, water tank o
pens until cam switch detects cam location, but water plate doe
s not separate, and actuator motor
and compressor de-energize (*1).
State
3
When water plate switch turns off, inlet water valve de-e
nergizes and water tank starts to open again.
If water temperature is 13°C or higher, water tank starts to op
en again in 1 minute (*2).
If water temperature is lower than 13°C, water tank starts to o
pen again in 5 minutes (*2). --- Water temperature is lower tha
n 13°C in initial cycle after startup.
However, if water plate switch turns off within 1 or 5 minute(s
), water tank starts to open again.
* When water plate switch or cam switch turns off, water tank s
tarts to open again.
State
4
When water tank opens and actuator motor's internal posit
ion sensor indicates water tank is fully open, hot gas valve en
ergizes.
When 5 minutes have passed after compressor de-energizes in Sta
te 2 and actuator motor's internal position sensor indicates wa
ter tank is fully open,
compressor energizes (*3).
State
5
When evaporator thermistor temperature reaches harvest cy
cle termination temperature, water tank starts to close and inl
et water valve energizes to start water
supply. Fan motor energizes at the same time.
State
6
When water tank closes and actuator motor's internal posi
tion sensor indicates water tank is fully closed, pump motor en
ergizes, and inlet water valve and hot gas
valve energizes for 15 seconds.
State
7
After 15 seconds, inlet water valve and hot gas valve de-
energizes to start freeze cycle.
State
8
When evaporator thermistor reaches target integrated valu
e, State 1 starts (see details).
Harvest Cycle - Bin Control (1): Bin control while water tank i
s closing
State
5
Bin control trips while water tank is closing. After 10 s
econds, water tank starts to open again, and actuator motor's i
nternal position sensor indicates water tank is fully open. The
n, icemaker shuts down.
(When bin control is ON for 10 seconds, inlet water valve de-en
ergizes. Then, after water tank fully opens, compressor and hot
gas valve de-energize.)
When bin control is ON for 50 seconds, hot gas valve energizes.
When bin control is ON for 80 seconds, State 5 in harvest cycl
e - normal starts followed by freeze cycle.
Harvest Cycle - Bin Control (2): Bin control after water tank o
pens
State
5
Water tank opens and actuator motor's internal position s
ensor indicates water tank is fully open. When bin control trip
s, water tank does not close even if harvest cycle termination
temperature is reached.
After 10 seconds, icemaker shuts down. When bin control is ON for 50 seconds, hot gas valve energizes.
When bin control is ON for 80 seconds, State 5 in harvest cycl
e - normal starts followed by freeze cycle.
Freeze Cycle Completion Rate
Evaporator Thermistor Temp.
Bin Control Switch
Inlet Water Valve
Actuator Motor
Close OFF Open
Hot Gas Valve
Pump Motor
Fan Motor
34
5
Water Plate Switch
Cam Switch
Compressor
30 sec
Harvest Cycle - Bin Control (2)
0
3
5
3
4
5
34
5
Startup
Initial Cycle
Freeze Cycle
Harvest Cycle - Normal
Freeze Cycle
Harv
est Cycle - Bin Control (1)
Fr
eez
e Cy
cl
e T
er
m
inati
on
T
emp.
Har
ves
t Cy
cl
e T
er
m
inati
on
Temp.
0ºC
*3
*3
*3
10
sec
10
sec
80
sec
50
sec
80
sec
50
sec
1)
Ta
rge
t i
ntegrate
d
value
for
freeze
cy
cle
terminatio
n
isdeterm
ined
b
y
CB
S
ettings
2
and
3.
2)
After
ev
apor
ato
r t
hermisto
r s
enses
0ºC,
freeze
cy
cle
termina
tion
tempera
tur
e
and
freeze
cy
cle terminatio
n
time
are
integrated
e
very
second.
3)
W
hen
target
integrated
v
alue
is reached,
freeze
cy
cle ends.
State
8
Summary of Contents for IM-50BAA-Q
Page 52: ...51 C Wiring Diagram ...
