Service manual

Wiring Diagram, CU1526 and CU2026 60 Hz
May 2008
Page 45
CU1526, CU2026, CU3030
Service Manual
W
BK
*
*
GN
W
BN/W
W
Y
W
(A/C ONLY) SWITCH PRESSURE FAN CYCLING
SOLENOID 1 HARVEST ASSIST
PROBE THICKNESS ICE
(2 PLATE UNITS ONLY) SWITCH 2 CURTAIN
SWITCH 1 CURTAIN
CURTAIN SWITCH
J6
1234
PTCR IS NOT ALLOWED TO COOL COMPRESSOR MAY NOT START IF CAUTION: PTCR WILL BE HOT.
FAN MOT
FAN IS PRESENT) (WHEN 2ND
W/Y
(AC ONLY)
(AIR COOLED ONLY)
MOTOR FAN
Y
SEE NOTE 4 CONTROL PRESSURE HIGH
L1 T1
L2
T2
CONTACTOR
LINE LOAD
TRANSFORMER
PUMP MOT
SOLENOID
SOLENOID
HOT GAS
WATER
USE COPPER CONDUCTORS ONLY
BE GROUNDED. THIS UNIT MUST
CAUTION:
REQUIRED TO DISCONNECT ALL POWER TO THIS UNIT. MORE THAN ONE DISCONNECT MEANS MAY BE
17-3195-01
CAP RUN
PTCR
POWER SUPPLY
AND MAXIMUM FUSE SIZE PROPER VOLTAGE REQUIREMENTS SEE NAMEPLATE FOR
L1
L2 (230/60/1 UNITS) N (115/60/1 UNITS)
LINE
12V
TRANSFORMER
HOT GAS VALVE
WATER VALVE
COIL CONTACTOR
COMPRESSOR
CAP RUN
PUMP WATER
PTCR
CONTACTOR T1
SENSOR LEVEL WATER
TEMP SUMP
TEMP DISCHARGE
ELECTRONIC CONTROL
BN
W
BU
W
BK
W
O
R/W
V
BN/W
CONTROL ELECTRONIC
BK
R
W/R
W/R
W
VALVE DUMP
BK
VALVE DUMP
CONTROL HIGH PRESSURE
FAN MOT
W
BN
MOTOR FAN
(AC ONLY) (WHEN APPLICABLE)
4321
J1
3
2
1
J9
7654321
J2
2
1
J8
2
1
J7
R
8
CONTROL SWITCH FAN CYCLING PRESSURE
(AIR COOLED ONLY)
BN
SENSOR TEMP. DISCHARGE
SENSOR SUMP TEMP.
SENSOR LEVEL WATER
W
BK
R
EARTH GROUND
J10
HARV ASSIST
SOLENOID
PROBE THICKNESS ICE
BK
W
GN/Y
GN/Y
SEE NOTE 4
Y
C
S
R
START WINDING
RUN WINDING
BK
W
R
BK
PROTECTOR EXTERNAL
COMPRESSOR
SWITCH ON/OFF
O
SWITCH ON/OFF