Service manual

May 2008
Page 48
CU1526, CU2026, CU3030
Service Manual
Wiring Diagram, CU3030 50 Hz
17-3186-01
MORE THAN ONE DISCONNECT MEANS MAY BE REQUIRED TO DISCONNECT ALL POWER TO THIS UNIT.
CAUTION:
THIS UNIT MUST BE GROUNDED.
USE COPPER CONDUCTORS ONLY
ON/OFF SWITCH
O
ON/OFF SWITCH
.33 uF
FUSE (3A)
GN/Y
GN/Y
W
BK
ICE THICKNESS PROBE
SOLENOID
HARV ASSIST
J10
EARTH GROUND
R
BK
W
WATER LEVEL SENSOR
SUMP TEMP. SENSOR
DISCHARGE TEMP. SENSOR
BN
(AIR COOLED ONLY)
FAN CYCLING PRESSURE CONTROL SWITCH
8
R
J7
1
2
J8
1
2
J2
1234567
J9
1
2
3
J1
1234
(WHEN APPLICABLE) (AC ONLY)
FAN MOTOR
BN
W
MOT FAN
HIGH PRESSURE CONTROL
DUMP VALVE
BK
DUMP VALVE
W
W/R
W/R
R
Y
BK
ELECTRONIC CONTROL
W
BK
BN/W
V
R/W
O
W
BK
W
BU
W
BN
ELECTRONIC CONTROL
DISCHARGE TEMP
SUMP TEMP
WATER LEVEL SENSOR
CONTACTOR T1
PTCR
WATER PUMP
RUN CAP
COMPRESSOR
CONTACTOR COIL
WATER VALVE
HOT GAS VALVE
TRANSFORMER
12V
LINE
L2
L1
SEE NAMEPLATE FOR PROPER VOLTAGE REQUIREMENTS AND MAXIMUM FUSE SIZE
POWER SUPPLY
PTCR
RUN CAP
R
BK
W
COMPRESSOR
R3
S2
C1
TERMINAL BOX
WATER
HOT GAS
SOLENOID
SOLENOID
MOT PUMP
CONTACTOR
T2
L2
T1L1
HIGH PRESSURE CONTROL (WC ONLY )
Y
FAN MOTOR
(AIR COOLED ONLY)
(WATER COOLED ONLY )
(AC ONLY)
W/Y
(WHEN 2ND FAN IS PRESENT)
MOT FAN
CAUTION: PTCR WILL BE HOT. COMPRESSOR MAY NOT START IF PTCR IS NOT ALLOWED TO COOL
4321
J6
CURTAIN SWITCH
CURTAIN SWITCH 1
CURTAIN SWITCH 2 (2 PLATE UNITS ONLY)
ICE THICKNESS PROBE
HARVEST ASSIST SOLENOID 1
FAN CYCLING PRESSURE SWITCH (A/C ONLY)
W
Y
W
BN/W
W
BK
BK
230V
12V
LOAD LINE
10
6
7
9
1
2
4
5
TRANSFORMER
FUSE (3A)
*
*
GN
PROTECTOR INTERNAL