Follett Maestro Plus MCC425A S Series Operation And Service Manual page 24

High gearmotor amps – Stage 2
If the restart is successful the board will continue to monitor the current draw on P4 for 60 minutes looking for a
second high amps (above 1.8A) or no current draw (0A) occurrence. If the ice machine runs without problems for
60 minutes and no additional torque errors occur, the ice machine will continue normal operation.
T.O.L.
RED
Start
Relay
4
3 2
YELLOW BLACK
R
S
C
Gearmotor
A B C D
Water Sensors
High gearmotor amps – Stage 3
If a second occurrence happens during the 60 minute monitoring period, the HI AMPS LED will come on again
and shut the machine down (strike two). The HI AMPS LED (wihout the TIME DELAY LED) will indicate to the
technician that two consecutive over-torque situations have occurred. The ice machine is shut down at this time
and locked out. It will not restart unless the manual reset button is depressed while power is on.
Start
Relay
3
YELLOW
R
S
C
Gearmotor
A B C D
Water Sensors
24 MC_425A/W, MM_425A/W, MF_425A/W, _P425A/W Ice Machines
R
S
C
Compressor
2
1
Start
Relay
5
Compressor
Electrical Box
WHITE
Drain Fill
Valve Valve
Bin T-Stat
Drain Clog Sensor
T.O.L.
R
S
C
Compressor
2
1
RED
Start
Relay
5
Compressor
Electrical Box
WHITE
Drain Fill
4
Valve Valve
2
BLACK
Bin T-Stat
Drain Clog Sensor
Fan
WHITE
N
N
P15
L1
BLACK
L1
HI PRS
RED
P6
P21
P20
BROWN
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
LOW WATER
1 2 3 4 5 6 7 8
MAINTENANCE
RESET
SERVICE
HI AMPS
HI PRESSURE
DRAIN CLOG
P11
BIN
CLEANER FULL
Clean Switch
High
Pressure
Switch
POWER
LOW BIN
MAKING ICE
SLEEP CYCLE
TIME DELAY
LOW WATER
1 2 3 4 5 6 7 8
MAINTENANCE
RESET
SERVICE
HI AMPS
HI PRESSURE
DRAIN CLOG
P11
BIN
CLEANER FULL
Clean Switch