Manitowoc J250 User Manual

Section 6 Electrical System
6-9
7. Automatic Shut-Off
If the storage bin is full at the end of a
harvest cycle, the sheet of cubes fails to
clear the water curtain and holds it open.
After the water curtain is held open for 7
seconds, the ice machine shuts off.
The ice machine remains off until enough
ice is removed from the storage bin to
allow the sheet of cubes to drop clear of
the water curtain. As the water curtain
swings back to the operating position, the
bin switch closes and the ice machine
restarts (steps 1-2).
NOTE: The ice machine must remain off
for 3 minutes before it can automatically
restart.
(Old Style Control Board Shown)
Self-Contained Models
7. Automatic Shut-Off (Until Bin Switch Closes)
Toggle Switch
ICE
Bin Switch
Closed
Control Board Relays
#1 Open
Water Pump OFF
#2 Open
Hot Gas Solenoid OFF
#3 Open
Water Dump Valve OFF
#4 Open
Contactor Coil OFF
Compressor OFF
Condenser Fan Motor OFF
Safety Controls (Which could stop ice machine operation)
High Pressure Cut-Out Closed
Main Fuse (On Control Board) Closed
Transformer Fuse (On Control Board) Closed
Thermistor Operation OK
SV1565
L1
TB35
TB30
TB30
TB30
TB30
SEE SERIAL PLATE FOR VOLTAGE
L2
(
N
)
TB32
(
55
)
(
61
)
(
60
)
(
77
)
(
80
)
(
76
)
(
75
)
(
98
)
(
99
)
TB3
TB37
(
59
)
(
73
)
(
74
)
(
56
)
(
58
)
(
57
)
HOT GAS
SOLENOID
DUMP
SOLENOID
WATER
PUMP
TERMINATES AT
PIN CONNECTION
CONTACTOR COIL
TRANS. FUSE
FUSE
(
7A
)
ICE THICKNESS PROBE
DISCHARGE LINE THERMISTOR
3
1
2
4
1D
1C
1B
1
A
BIN SWITCH
(
62
)
(
63
)
(
65
)
(
64
)
(
66
)
(
66
)
(
67
)
(
62
)
(
69
)
(
68
)
HARVEST LIGHT/
SAFETY CODE LIMIT LIGHT
BIN SWITCH LIGHT
ICE
OFF
CLEAN
TOGGLE SWITCH
VIEW FOR WIRING
62
66
69
67
68
HIGH
PRESSURE
CUTOUT
←
←←
←INTERNAL
WORKING VIE
W
TB35
TB33 TB34
TB30
TB30
(
49
)
(
47
)
COMPRESSOR RUN CAPACITOR
SR
C
RR
*OVERLOAD
PTCR
(
46
)
(
45
)
(
50
)
(
42
)
(
48
)
(
52
)
(
85
)
(
86
)
(
53
)
FAN CYCLE
CONTROL
L1
RUN CAPACITOR**
FAN MOTOR
(AIR-COOLED ONLY)
CONTACTOR
CONTACTS

Manitowoc J250 Specifications

General

Brand	Manitowoc
Model	J250
Category	Ice Maker
Language	English