Follett MCE414A S Series Installation, Operation And Service Manual page 18

Normal operation – Stage 8
When the dwell time of 20 minutes has expired, the TIME DELAY LED goes off. If 5 seconds of ice has been
dispensed and the SLEEP CYCLE LED is off, the ice machine will go through the normal start-up sequence when
the bin level control signals the control board for ice.
T.O.L.
RED
Gearmotor
A B C D
Water Sensors
Quiet Night/Sleep cycle
The board monitors ice dispensing through a line voltage input to P15. If the ice dispense has not be initiated for
more than 5 seconds during the 20 minute time delay, the SLEEP CYCLE LED comes on. The machine will stay
off for 12 hours unless 5 seconds of dispensing is seen. After 12 hours, the SLEEP CYCLE LED goes out and the
ice making will resume if the bin thermostat is closed. The sleep cycle dispense duration is adjustable using the
DIP switches on the control board.
Self-flushing
At the completion of the 20 minute time delay, the machine checks for a cumulative one hour of ice making time
since the last off-cycle flush. If the cumulative ice making time exceeds one hour, the machine will energize the
drain valve P19 for 60 seconds to drain the evaporator. It will then refill with water, flush again, refill and begin
making ice if the LOW BIN LED is on. If the ice making time is less than 1 hour, the machine will start and begin
making ice without draining the evaporator.
18 MC_414A, MF_414A R290 230 V/50 Hz Ice Machines
R
S
C
Compressor
2
1
Start
Relay
5
Compressor
Electrical Box
WHITE
Drain Fill
Valve Valve
Bin T-Stat
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
P11
BIN
CLEANER FULL
Clean Switch