Follett Maestro Plus MCC425A S Series Operation And Service Manual page 19

Normal operation – Stage 2
When continuity is seen between B and C, the water valve de-energizes, the AUGER output (P4) comes on along
with the MAKING ICE LED. The auger gearmotor's start windings are energized through a current style start relay
that is pulled in by the initial high current draw of the gearmotor.
T.O.L.
RED
Start
Relay
4
3 2
YELLOW BLACK
R
S
C
Gearmotor
A B C D
Water Sensors
Normal operation – Stage 3
After the initial high current draw drops off, the gearmotor start relay contacts open, dropping out the start winding.
The condenser fan output (P3) comes on 0.5 seconds later.
T.O.L.
RED
Start
Relay
4
3 2
YELLOW BLACK
R
S
C
Gearmotor
A B C D
Water Sensors
R
S
C
Compressor
2
1
Start
Relay
5
Compressor
Electrical Box
WHITE
Drain Fill
Valve Valve
Bin T-Stat
Drain Clog Sensor
R
S
C
Compressor
2
1
Start
Relay
5
Compressor
Electrical Box
WHITE
Drain Fill
Valve Valve
Bin T-Stat
Drain Clog Sensor
MC_425A/W, MM_425A/W, MF_425A/W, _P425A/W Ice Machines
Fan
WHITE
N
N
P15
L1
BLACK
L1
HI PRS
RED
P6
P21
BROWN P20
P19
BLACK
P3
WATER LEVELS
P22
BLUE
P4
AUGER
Fan
WHITE
N
N
P15
L1
BLACK
L1
HI PRS
RED
P6
P21
BROWN P20
P19
BLACK
P3
WATER LEVELS
P22
BLUE
P4
AUGER
High
Pressure
Switch
POWER
LOW BIN
MAKING ICE
SLEEP CYCLE
TIME DELAY
1 2 3 4 5 6 7 8 LOW WATER
MAINTENANCE
RESET
SERVICE
HI AMPS
HI PRESSURE
DRAIN CLOG
BIN P11
CLEANER FULL
Clean Switch
High
Pressure
Switch
POWER
LOW BIN
MAKING ICE
SLEEP CYCLE
TIME DELAY
1 2 3 4 5 6 7 8 LOW WATER
MAINTENANCE
RESET
SERVICE
HI AMPS
HI PRESSURE
DRAIN CLOG
BIN P11
CLEANER FULL
Clean Switch
19