Electrical Control System Schematic - 220 V 60 Hz; Electrical Control System Operation - Follett MCC425A/W S Operation And Service Manual

Electrical control system schematic - 220 V 60 Hz

BLACK #26
L1
WHITE #25
L2/N
GRN-YEL #24
GND
BLACK #23
DISP
BIN
CONTACT
CLOSURE
COMPRESSOR
R S
C
THERMAL
O.L.
START
RELAY
5
2 BROWN
1
4
C2-START
JUNCTION
BOX
GRN / YEL

Electrical control system operation

The wiring diagrams that follow illustrate the circuitry of these Follett ice machines used with ice dispensers. Both
normal operation of the ice machine (Stages 1–6) and non-normal diagnostic sequences showing torque-out
(Stages 7–10) for use in troubleshooting ice machine problems are shown.
Circuitry notes
When the ice machine is used with a dispenser it receives power from the main power supply. Disconnect the
power source before performing service. When performing electrical service, always use a meter to determine
whether or not the components being serviced are energized.
§ High pressure cutout opens at 425 PSI (2930.3 kPA) and closes at 287 PSI (1978.8 kPA)(auto reset).
§ The bin signal input to the control board in the 425A/W ice machine must only be initiated by contact closure. Do
not supply power. To run the ice machine in the workshop, use the bin signal jumper (P/N 01069095).
BLACK #51
WHITE #52
WHITE #121
WHITE #13
P2
L1
L1
L1
P1
BLUE
#15
START
FEED
RELAY
VALVE
WHITE
#04
C1-RUN
DRAIN
VALVE
#05
FAN
MC_425A/W, MM_425A/W, MF_425A/W, _P425A/W Ice Machines
N N N N N N N N N
BLACK #01
T1
D19
P6 D22
P21
D21
D18
P20
D20
K3
P19
P3
T2
D17
P22
D48
CURRENT
P5
SENS
P4-AUGER
SPLIT-PHASE MOTOR
START
4 BLK
2
YEL
3
RUN
T.O.L.
DRAIN CLOG
SENSOR
RESERVOIR
WATER SENSOR
BLACK #23
BLACK #51
K1
ICE
AUX
P15
P14-HI PRS
COMPRESSOR
D16
S1
MODEL SELECT
P9
2 6
1 5
D37
PROGRAM
P10
S2
SERIAL
RESET
P17
COMM
WATER LEVELS
P7-RS485 UI
P12-BIN P11
P13 P8-RS485
P18
GRN #17
P12-BIN P11-CLEAN SAFE
P17-WATER LEVELS P14-HI PRS
BLACK
VIOLET
RED
BLACK
ORANGE
YELLOW
A B C D
P
HIGH
PRESS
D1
POWER
D2
LOW BIN
D3
MAKING ICE
D4
SLEEP CYCLE
D5
TIME DELAY
D6
LOW WATER
D7
MAINTENANCE
D8
SERVICE
D9
HI AMPS
D10
HI PRESSURE
D11
DRAIN CLOG
D12
CLEANER FULL
D13
D14
D15
MAINT.
CLEAN
17