Follett Symphony E12CI425A Operation And Service Manual page 31

High refrigerant pressure
Should the refrigeration pressure rise above 425 psi, the high pressure switch contacts will open . The board sees
the open circuit and the HIGH PRESSURE and TIME DELAY LEDs will come on, the machine shuts down . After
the one hour time delay, the machine will attempt to restart . If the pressure has fallen below the reset point of 295
psi and the board see the contacts closed, the machine will resume normal operation . If the contacts are still open
after the restart, the board will again go into HIGH PRESSURE and TIME DELAY, cycling until contact closure is
seen .
T.O.L.
RED
Start
Relay
4
3 2
YELLOW BLACK
R
S
C
Gearmotor
A B C D
Water Sensors
Refrigeration cycle
high side
service port
filter dryer
thermostatic
expansion
valve
R
S
C
Compressor
2
1
Start
Relay
5
Compressor
Electrical Box
WHITE
Drain Fill
Valve Valve
Bin T-Stat
condenser
evaporator
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
high high
pressure pressure
vapor liquid
E12CI425A 230 V 50 Hz, C12CI425A 220 V 60 Hz
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
BIN P11
CLEANER FULL
Clean Switch
low side service port
compressor
low low
pressure pressure
liquid vapor
31