Service manual

Electrical System Section 6
6-14 Part No. 80-1100-3
Harvest Sequence
5. WATER PURGE
The water pump continues to run,
and the water dump valve energizes
for 45 seconds to purge the water in
the sump trough. The water fill valve
energizes (turns on) and de-
energizes (turns off) strictly by time.
The water fill valve energizes for the
last 15 seconds of the 45-second
water purge. The water purge must
be at the factory setting of 45
seconds for the fill valve to energize
during the last 15 seconds of the
Water Purge. If set at less than 45
seconds the water fill valve does not
energize during the water purge.
NOTE: After the 45 second water
purge, the water fill valve, water
pump and dump valve de-energize.
(Refer to “Water Purge Adjustment”
on Page 3-3 for details.) The harvest
valve and HPR solenoid also open at
the beginning of the water purge to
divert hot refrigerant gas into the
evaporator.
Figure 6-12. Remote — Water Purge
Table 6-12. Remote Models
5. Water Purge (45 Seconds)
Toggle Switch ICE
Bin Switch Closed
Control Board Relays
#1 Water Pump Closed / ON
#2 Water Fill Valve Cycles / OFF then ON
#3 Harvest Solenoid Closed / ON
Harvest Pressure Regulating (HPR) Solenoid Closed / ON
#4 Water Dump Valve Closed / ON
#5 Contactor Coil Closed / ON
Liquid Line Solenoid Energized
Compressor ON
Condenser Fan Motor ON
Safety Controls (Which could stop ice machine operation)
High Pressure Cut-Out Closed
Main Fuse (On Control Board) Closed
TERMINATES AT
PIN CONNECTION
*OVERLOAD
BIN SWITCH
ICE THICKNESS PROBE
(F1)
TB33
(52)
(51)
(48)
T
B35
L1
(42)
CONTACTOR
CONTACTS
(66)
(64)
WATER LEVEL PROBE
NOT USED
TB32
T
B35
L1
(55)
HIGH PRES
CUTOUT
(74)
(73)
REMOTE
FAN MOTOR
RUN CAPACITOR
PTCR
TB34
(53)
REMOTE CONDENSER
(F2)
(45)
TB3
0
BIN SWITCH LIGHT
HARVEST LIGHT/
SAFETY LIMIT CODE LIGHT
RUN CAPACITOR
TOGGLE SWITCH
INTERNAL WORKING
VIEW
CLEAN LIGHT
WATER LEVEL
(68)
ICE
C
S
R
(46)
(49)
(47)
COMPRESSOR
(62)
(66)
(69)
(67)
OFF
CLEAN
1F
LOW D.C.
VOLTAGE
PLUG
(63)
(65)
(62)
1G
1C
R
R
(50)
TB3
0
68
67
69
66
62
(56)
COIL
VIEW FOR WIRING
TB3
0
CONTACTOR
TB3
0
(57)
4
(58)
1
3
FUSE (7A)
TRANS.
5
(61)
(60)
2
HARVEST
(80)
TB31
TB37
(76)
(98)
(99)
SOLENOID
DUMP
SOLENOID
(81)
WATER
PUMP
SOLENOID
TB3
0
TB3
0
(82)
(83)
(59)
(75)
LIQUID LINE
HPR
L2 (N)
SEE SERIAL PLATE FOR VOLTAGE
(22)(21)
WATER
VALVE
(77)
(79)(78)
SOLENOID
(20)
SV1648-5