Follett MCC425A/W S Operation And Service Manual page 20

Normal operation – Stage 4
One second (1 s) after the fan comes on, the COMPRESSOR output comes on. The compressor circuit uses both
run and start capacitors along with a potential start relay. The start capacitor in energized through the normally
closed contacts of the start relay.
Start
Relay
3
YELLOW
R
S
C
Gearmotor
A B C D
Water Sensors
Normal operation – Stage 5
As the compressor comes up to normal running speed, its start winding generates a voltage potential across the
relay's coil. This energizes the coil to open the contact and drop out the start capacitor.
The ice machine is now in a normal ice making mode. The ice machine will produce ice until the bin level control
in the ice dispenser is satisfied.
Start
Relay
3
YELLOW
R
S
C
Gearmotor
A B C D
Water Sensors
20 MC_425A/W, MM_425A/W, MF_425A/W, _P425A/W Ice Machines
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
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
P20
BROWN
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
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