Follett Symphony 12 Series Installation, Operation And Service Manual page 17

Normal operation – Stage 2
The water sensor verifi es water in the fl oat reservoir. The water OK LED (WTR) comes on. At the same time, the
gearmotor, compressor and condenser fan motor come on, lighting the drive LED (DR) and compressor LED (C).
The high initial current draw of the compressor run winding closes the contacts of the current relay energizing
the start winding through the run capacitor. The gearmotor is also started through a current style relay (or start
capacitor) that is pulled in by the initial high current draw of the run winding. The PWR, B-E and WTR LED remain
on.
INPUT
POWER
G
B
W
COMPRESSOR
C
T.O.L.
RED
START
RELAY
WHITE
Normal operation – Stage 3
After the initial high current draw drops off, the gearmotor start relay contacts open, dropping out the start winding
(or start capacitor). As the compressor comes up to normal running speed, the compressor start relay contacts
also open, dropping out the start winding of the compressor. The icemaker is now in a normal icemaking mode.
The icemaker will begin to produce ice and continue to produce ice until the bin level control in the ice dispenser is
satisfi ed. The PWR, B-E, DR, C and WTR LEDs are all on.
INPUT
POWER
G
B
W
COMPRESSOR
C
T.O.L.
RED
WHITE
GRD
FAN
BLACK
BLACK
M
BLACK
R 1
M
ORANGE
S L
S
BLACK
HIGH PRESSURE
SAFETY SWITCH
GEAR MOTOR
START
4 2
BLACK
3
YELLOW RUN
T.O.L.
START CAP.
GEAR MOTOR
START
RED
RUN
T.O.L.
GRD
FAN
BLACK
BLACK
M
BLACK
R 1
M
ORANGE
S L
S
BLACK
HIGH PRESSURE
SAFETY SWITCH
START
GEAR MOTOR
RELAY
START
4 2
BLACK
3
YELLOW RUN
T.O.L.
START CAP.
GEAR MOTOR
START
RED
RUN
T.O.L.
WATER
SENSOR
GRD
L1
L1
WHITE
L2
L2
L2
WHITE
L2
L2
RED
COMPRESSOR
BLACK
FAN
DRIVE
BLACK
BLACK
BISON GEARMOTOR
OR
LINIX GEARMOTOR
WATER
SENSOR
GRD
L1
L1
WHITE
L2
L2
L2
WHITE
L2
L2
RED
COMPRESSOR
BLACK
FAN
DRIVE
BLACK
BLACK
BISON GEARMOTOR
OR
LINIX GEARMOTOR
17
PWR
RESET
DR
C
20M
CONTROL
BOARD 60M
2ND
WTR
B-T
B-E
RED
RED
COMPRESSOR
SWITCH
BIN SIGNAL
FROM DISPENSER
BIN T-STAT
JUNCTION BOX
(MCD400A/WVS series –
blk wire is on 24V)
PWR
RESET
DR
C
20M
CONTROL
BOARD 60M
2ND
WTR
B-T
B-E
RED
RED
COMPRESSOR
SWITCH
BIN SIGNAL
FROM DISPENSER
BIN T-STAT
JUNCTION BOX
(MCD400A/WVS series –
blk wire is on 24V)