Service manual

Section 6 Electrical System
Part No. 80-1100-3 6-11
2. REFRIGERATION SYSTEM
START-UP
The compressor, remote condenser
fan motor and liquid line solenoid
valve energize after the 45-second
water purge, and remain on
throughout the Freeze and Harvest
cycles.
The water fill valve is energized at the
same time as the compressor. It
remains on until the water level
sensor closes for 3 continuous
seconds.
The harvest valve and harvest
pressure regulating (HPR) solenoid
valve remain on for the first 5
seconds of the initial compressor
start-up.
NOTE: (The compressor and the
condenser fan motor are wired
through the contactor. Any time the
contactor coil is energized, these
components are supplied with
power.)
Figure 6-9. Remote — Refrigeration System Start-Up
Table 6-9. Remote Models
2. Refrigeration System Start-Up (5 Seconds)
Toggle Switch ICE
Bin Switch Closed
Control Board Relays
#1 Water Pump Open / OFF
#2 Water Fill Valve Closed / ON
#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)
WATER LEVEL PROBE
NOT USED
(64)
TB32
TB35
L1
(55)
HIGH PRES
CUTOUT
(74)
(73)
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
SOLENOID
WATER
PUMP
SOLENOID
TB30
TB30
LIQUID LINE
(81)
(82)
(75)
DUMP
(83)
HPR
SOLENOID
L2 (N)
SEE SERIAL PLATE FOR VOLTAGE
(22)(21)
WATER
VALVE
(77)
(79)(78)
(20)
SV1648-2