Service manual

Wiring Diagram, CU1526 and CU2026 50 Hz
May 2008
Page 47
CU1526, CU2026, CU3030
Service Manual
USE COPPER CONDUCTORS ONLY
THIS UNIT MUST BE GROUNDED.
CAUTION:
MORE THAN ONE DISCONNECT MEANS MAY BE REQUIRED TO DISCONNECT ALL POWER TO THIS UNIT.
17-3196-01
ON/OFF SWITCH
FUSE (3A)
O
ON/OFF SWITCH
O
FUSE (3A)
GN
*
*
TRANSFORMER
5
4
2
1
9
7
6 10
LINE LOAD
12V
230V
BK
BK
W
BN/W
W
Y
W
FAN CYCLING PRESSURE SWITCH (A/C ONLY)
HARVEST ASSIST SOLENOID 1
ICE THICKNESS PROBE
CURTAIN SWITCH 2 (2 PLATE UNITS ONLY)
CURTAIN SWITCH 1
CURTAIN SWITCH
J6
1234
CAUTION: PTCR WILL BE HOT. COMPRESSOR MAY NOT START IF PTCR IS NOT ALLOWED TO COOL
MOT FAN
(WHEN 2ND FAN IS PRESENT)
W/Y
(AC ONLY)
(WATER COOLED ONLY )
(AIR COOLED ONLY)
FAN MOTOR
Y
HIGH PRESSURE CONTROL (WC ONLY )
L1 T1
L2
T2
CONTACTOR
MOT PUMP
SOLENOID
SOLENOID
HOT GAS
WATER
RUN CAP
PTCR
POWER SUPPLY
SEE NAMEPLATE FOR PROPER VOLTAGE REQUIREMENTS AND MAXIMUM FUSE SIZE
L1
L2
LINE
12V
TRANSFORMER
HOT GAS VALVE
WATER VALVE
CONTACTOR COIL
COMPRESSOR
RUN CAP.
WATER PUMP
PTCR
CONTACTOR T1
WATER LEVEL SENSOR
SUMP TEMP.
DISCHARGE TEMP.
ELECTRONIC CONTROL
BN
W
BU
W
BK
W
R/W
V
BN/W
BK
W
ELECTRONIC CONTROL
BK
R
W/R
W/R
W
DUMP VALVE
BK
DUMP VALVE
HIGH PRESSURE CONTROL
MOT FAN
W
BN
FAN MOTOR
(WHEN APPLICABLE) (AC ONLY)
4321
J1
3
2
1
J9
7654321
J2
2
1
J8
2
1
J7
R
8
FAN CYCLING PRESSURE CONTROL SWITCH
(AIR COOLED ONLY)
BN
DISCHARGE TEMP. SENSOR
SUMP TEMP. SENSOR
WATER LEVEL SENSOR
W
BK
R
EARTH GROUND
J10
HARV ASSIST
SOLENOID
ICE THICKNESS PROBE
BK
W
GN/Y
GN/Y
.33 uF
Y
C
S
R
START WINDING
RUN WINDING
BK
W
R
BK
EXTERNAL PROTECTOR
COMPRESSOR