Service manual

Section 6 Electrical System
Part No. 80-1100-3 6-15
6. HARVEST
The harvest valve(s) and HPR
solenoid valve remain open, allowing
refrigerant gas to warm the
evaporator. This causes the cubes to
slide, as a sheet, off the evaporator
and into the storage bin.
The sliding sheet of cubes swings the
water curtain out, opening the bin
switch. This momentary opening and
closing of the bin switch terminates
the Harvest Cycle and returns the ice
machine to the Freeze Cycle (steps
3-4).
Figure 6-13. Remote — Harvest
Table 6-13. Remote Models
6. Harvest (Until Bin Switch Activation)
Toggle Switch ICE
Bin Switch Closed
Control Board Relays
#1 Water Pump Open / OFF
#2 Water Fill Valve Open / OFF
#3 Harvest Solenoid Closed / ON
Harvest Pressure Regulating (HPR) Solenoid Closed / ON
#4 Water Dump Valve Open / OFF
#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)
TB35
L1
(42)
CONTACTOR
CONTACTS
(66)
(64)
WATER LEVEL PROBE
NOT USED
TB32
TB35
L1
(55)
HIGH PRES
CUTOUT
(73)
(74)
REMOTE
FAN MOTOR
RUN CAPACITOR
PTCR
TB34
(53)
REMOTE CONDENSER
(F2)
(45)
TB30
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)
TB30
68
67
69
66
62
(56)
COIL
VIEW FOR WIRING
TB30
CONTACTOR
TB30
(57)
4
(58)
1
3
FUSE (7A)
TRANS.
5
(61)
(60)
2
HARVEST
(80)
TB31
TB37
(76)
(98)
(59)
(99)
SOLENOID
DUMP
SOLENOID
WATER
PUMP
SOLENOID
TB30
TB30
(82)
(83)
(81)
(75)
LIQUID LINE
HPR
SOLENOID
L2 (N)
SEE SERIAL PLATE FOR VOLTAGE
(22)(21)
WATER
VALVE
(77)
(79)
(78)
(20)
SV1648-6