Page 1
CME306 and CME456 Service Parts
This parts list contains the parts numbers for the CME306 and CME456 air and water cooled models.
The title at the top of the page identifies which model the parts list applies to.
The machines are available in 115/60 or 230/60 or 230/50 electrical configurations.
The A and B series have different water cooled condensers. C series has a different expansion valve and
fan motor bracket, as well as the B series water cooled condenser..
Be sure to check the description to confirm that the correct part number is being ordered.
Table of Contents
Cabinet ··············································Page 2
Water Pump and Sensor ·····································Page 3
Evaporator and Water Distribution ································Page 4
CME306 Air Cooled Refrigeration ································Page 5
CME456 Air Cooled Refrigeration ································Page 6
Air Cooled Section ········································Page 7
Interior Parts ··········································· Page 8
CME306 Water Cooled Refrigeration ·······························Page 9
CME456 Water Cooled Refrigeration ·······························Page 10
Water Cooled Section ······································Page 11
Control Box and Electrical ····································Page 12
Wiring Diagram ··········································Page 13
May 2004
Page 1
Page 2
11
CME306 and CME456 Service Parts
Cabinet
1
13
12
2
3
10
9
7
8
6
5
4
Item Part
Number Number Description
1 02-3820-21 Top panel, plastic, includes item 2
2 02-3835-01 Insulation
3 A37513-021 Right side panel, includes catches
4 03-1733-01 Strike
03-1734-01 Insert
5 15-0792-02 CM3 emblem
6 15-0808-03 Emblem
7 A37577-021 Front panel, includes trim strip, strikes and emblems
8 02-3819-01 Trim strip
9 03-1735-01 Screw
10 03-1733-02 Catch
11 02-2976-01 Filter for air cooled
12 03-1531-01 Screw
13 A37521-021 Left side panel, AC
A37531-021 Left side panel, WC
14 03-3804-01 Catch
14
May 2004
Page 2
Page 3
CME306 and CME456 Service Parts
Water Pump and Sensor
1
2
8
7
Item Part
Number Number Description
1 02-3777-03 Float stem
2 11-0539-21 Water level sensor
3 03-1691-01 Screw
4 02-3803-01 Sump cover
5 02-3341-01 Float
6 02-3813-01 Pump bracket - front half
7 12-2586-21 Water pump, CME306 115/60
12-2586-26 Water pump, CME306 all 230 volt
12-2586-27 Water pump, CME456 115/60
12-2586-23 Water pump, CME456 all 230 volt
8 02-3802-01 Pump bracket, back half
9 12-2665-01 Harness
9
6
5
3
4
February 2001
Page 3
Page 4
CME306 and CME456 Service Parts
Evaporator and Water Distribution
1
1
10
9
3
8
4
2
2a
5
6
6
Item Part
Number Number Description
1 02-2527-01 Water distributor
2 02-3811-01 Manifold (456 only)
2a 13-0840-01 Rubber plug
3 A37575-022 Left evaporator
4 A37575-021 Right evaporator (456 only)
5 02-3807-01 Water hose, CME456 only
6 11-0545-21 Temperature sensor, includes discharge sensor
7 02-3824-01 Water trough CME456 only
8 02-3814-01 Water hose, CME306 only (1 plate)
9 11-0514-02 Purge valve,115/60 Hz
11-0514-01 Purge valve, 230 volt
10 A30926-001 Water manifold, CME306 only
7
May 2004
Page 4
Page 5
10
CME306 and CME456 Service Parts
CME306 Air Cooled Refrigeration
1
2
8
3
4
5
7
6
9
Item Part
Number Number Description
1 A37575-022 Evaporator
2 12-2471-01 Hot gas valve
3 16-1063-02 Strainer
4 16-0832-21 Access valve
16-0832-03 Port cap
16-0832-02 Stem cap
5 11-0545-21 Discharge sensor, includes water sensor
6 18-8838-21 Compressor, 115/60, includes PTCR, Run Cap and drier. RS43C2E-CAA-213
18-5700-50 Overload for above
18-8838-22 Compressor, 230/50, includes drier
18-5700-55 Overload for above
18-8838-23 Compressor, 230/60. RS43C2E-CAV-213
18-8838-50 Overload for above
7 03-1405-20 Screw
03-1407-07 Washer
18-2200-28 Grommet
18-2200-27 Sleeve
8 16-1009-22 TXV, AN ½ SZ. For A and B series.
02-3792-02 Insulation for TXV. For A and B series
16-1115-21 TXV for C series, includes insulation. Insulation for Danfoss TXV: 02-4045-01
9 02-3319-01 Filter drier
10 18-8833-01 Air cooled condenser
February 2006
Page 5
Page 6
10
CME306 and CME456 Service Parts
CME456 Air Cooled Refrigeration
1
Item Part
4
5
7
9
6
2
3
11
Number Number Description
1 see page 4 Evaporator
2 12-2471-22 Hot gas valve
8
3 16-1063-02 Strainer
4 16-0832-21 Access valve
16-0832-03 Port cap
16-0832-02 Stem cap
5 11-0545-21 Discharge sensor, includes water sensor
6 18-8839-21 Compressor, 115/60, includes PTCR, Run Cap. and drier. RS55C2E-PAA-213
18-8711-50 Overload for above
18-8839-22 Compressor, 230/50, includes drier
18-8721-50 Overload for above
18-8839-23 Compressor, 230/60. RS55C2E-CAV-213
18-8839-50 Overload for above
7 03-1405-20 Screw
03-1407-07 Washer
18-2200-28 Grommet
18-2200-27 Sleeve
8 16-1009-22 TXV, AN ½ SZ. For A and B series.
02-3792-02 Insulation for TXV For A and B series
16-1115-21 TXV for C series, includes insulation. Insulation for Danfoss TXV: 02-4045-01
9 02-3319-01 Filter drier
10 18-8833-01 Air cooled condenser
11 16-1071-01 Check valve
February 2006
Page 6
Page 7
CME306 and CME456 Service Parts
Air Cooled Section
1
9
10
8
6
5
7
4
2
3
11
Item Part
Number Number Description
1 A37576-001 Shroud for CME456
2 18-8836-01 Fan blade
3 12-1681-23 Fan motor, 115/60
12-1681-04 Fan motor, 230 volt
4 A37503-001 Fan motor bracket for A or B series (orEM&Sfanmotor)
A38480-001 Fan motor bracket for C series (or GE fan motor)
03-1645-01 Screw, bracket to shroud
5 A37502-001 Shroud for CME306
6 A37613-001 Top of shroud
7 A37591-001 Divider
8 A37515-001 AC back panel
9 A37646-001 AC baffle
10 02-3692-21 Drain fitting
11 A37612-001 Shroud bottom
November 2005
Page 7
Page 8
CME306 and CME456 Service Parts
Interior Parts
2
1
10
11
12
2
3
5
4
13
8
7
9
6
Item Part
Number Number Description
1 02-3765-02 Cascading shield, CME456 only
2 11-0540-21 Ice Sensors, set of two
3 02-3808-01 Upper splash panel
4 02-3805-01 Evaporator support
5 02-3815-01 Evaporator cover
6 02-3834-01 Insulation
7 02-3816-01 Grommet
8 02-3806-01 Lower splash panel
9 13-0674-02 Tubing, WC only, order 2 units (ft)
10 02-3812-01 Tubing, AC only
15-0821-01 Tube, 50 Hz WRAS listed units
11 12-2548-01 Water valve
11-0568-01 Water valve, 50 Hz WRAS listed units
12 02-3833-02 Grommet seal
02-3833-01 Grommet
13 02-3801-01 Ice deflector
November 2005
Page 8
Page 9
12
CME306 and CME456 Service Parts
CME306 Water Cooled Refrigeration
1
2
11
10
8
3
4
5
7
9
Item Part
Number Number Description
1 A37575-022 Evaporator
2 12-2471-01 Hot gas valve
3 16-1063-02 Strainer
4 16-0832-21 Access valve
16-0832-03 Port cap
16-0832-02 Stem cap
5 11-0545-21 Discharge sensor, includes
water sensor
6 18-8838-21 Compressor, 115/60,
includes PTCR and drier
RS43C2E-CAA-213
18-5700-50 Overload for above
18-8838-22 Compressor, 230/50,
includes drier
18-5700-55 Overload for above
18-8838-23 Compressor, 230/60.
RS43C2E-CAV-213
18-8838-50 Overload for above
7 03-1405-20 Screw
03-1407-07 Washer
18-2200-28 Grommet
18-2200-27 Sleeve
6
8 16-1009-22 TXV, AN ½ SZ. For A and
B series
02-3792-02 Insulation for TXV For A
and B series
16-1115-21 TXV for C series, includes
insulation.
02-4045-01 Insulation for C series TXV
9 02-3319-01 Filter drier
10 11-0478-01 Water regulating valve
11 11-0501-21 Hi pressure cut out
12 18-3306-25 A Series water cooled
condenser
18-8871-21 B or C Series water cooled
condenser
February 2006
Page 9
Page 10
12
CME306 and CME456 Service Parts
CME456 Water Cooled Refrigeration
1
Item
14
4
5
7
9
6
Part
2
11
Number Number Description
1 see page 4 Evaporator
8
2 12-2471-22 Hot gas valve
3 16-1063-02 Strainer
4 16-0832-21 Access valve
16-0832-03 Port cap
16-0832-02 Stem cap
5 11-0545-21 Discharge sensor, includes water sensor
6 18-8839-21 Compressor, 115/60, includes Run cap, PTCR and drier. RS55C2E-PAA-213
18-8711-50 Overload
18-8839-22 Compressor, 230/50, includes drier
18-8721-50 Overload
18-8839-23 Compressor, 230/60.RS55C2E-CAV-213
18-8839-50 Overload for above
7 03-1405-20 Screw
03-1407-07 Washer
18-2200-28 Grommet
18-2200-27 Sleeve
8 16-1009-22 TXV, AN SZ. For A or B series
02-3792-02 Insulation for TXV, A or B
16-1115-21 TXV for C series. Insulation for C series Danfoss TXV: 02-4045-01
9 02-3319-01 Filter drier
11 16-1071-01 Check valve
12 11-0478-01 Water regulating valve
13 11-0501-21 Hi pressure cut out
14 18-3306-25 A Series water cooled condenser
18-8871-21 B or C Series water cooled condenser
13
3
February 2006
Page 10
Page 11
CME306 and CME456 Service Parts
Water Cooled Section
1
4
3
2
Item Part
Number Number Description
1 A37507-001 Purge valve bracket, also used on air cooled
2 A31828-002 Drain casting
3 03-0571-01 Screw
4 A37600-001 Back panel for water cooled
May 2004
Page 11
Page 12
CME306 and CME456 Service Parts
Control Box and Electrical
14
13
11
10
1
9
2
8
3
6
12
Item Part
Number Number Description
1 12-2836-01 Transformer 115/60/1 only
12-2836-02 Transformer, 230/60/1 only
2 12-2469-01 Contactor
3 11-0531-21 Purge valve timer
4 12-2686-01 Fuse for 230/50 only
5 12-2640-01 Terminal strip for 230/50 only
6 12-2687-01 Fuse holder 230/50 only
7 12-2679-01 Relay 230/50 only
8 18-8835-01 PTCR
9 18-1902-52 Run Cap, CME306 for 115/60 Hz
18-1902-17 Run cap, for CME306 230/60 hz
18-1902-45 Run Cap CME456 115/60
18-1902-30 Run Cap for all CME456 230 volt
18-2200-35 Start Cap, CME306 230/50
10 12-2680-01 Relay holder
11 12-2639-02 Transformer for 230/50/1 only
12 12-2838-23 Controller
13 A37510-001 Control box cover
14 A37505-001 Brace
July 2006
Page 12
7
4
5
Harnesses:
Hi Voltage:
12-2775-01 AC 230/50
12-2788-01 WC 230/50
12-2767-01 AC, WC 115/60
Low Voltage
12-2772-02 WC, 230/50
12-2772-01 AC, 230/50
12-2769-01 AC, WC 115/60
Page 13
CME306 and CME456 Service Parts
60 Hz Wiring Diagram
17-2860-01
THERMO
BIN
(OPTIONAL)
SU MP TEMP.
SENSO R
DISCHARGE
TEMP.
SE NSO R
BIN FULL
T RANSMITTER
BIN FULL
RECE IVER
THIS UNIT MU ST
BE GROUN DE D.
(AIR COOLEDONLY)
(456 0NLY)
MOT
FAN
W/BN
BN
BN
W/BN
W/BU
MOT
SOLENOID SOLENOID
PUMP
USE COPPER CONDUCTORS ONLY
MOT
FAN
1 DASHED LINES IND ICATE FIELD WIRING WHICH MUST BE
INSTALLED IN ACC ORDANCE WITH THE NATIONA L ELEC TRICAL
CODE AND A LL STATE AND LOCAL CODES .
CAUTION:
COMPRESSOR MAY NOT ST ART IF PT CR IS NOT ALLOW ED TO COOL
R
BU
BU
O
BK
B K/W
O
V
Y
WATER
LEVEL
SENSOR
12 34567 1234
7
6
5
123 45
ELECTR ONIC
CONTROL
4
123
3
12 3
2
123 45
COMMUNICATIONS
1
23
1
PORT
98
HIGH PRESSURE
CONTROL
(W ATERCOOLED ONLY)
SEE NA MEPLATE FOR
PROPER VOLTAGE REQUI REMENTS
AND MAXIMUM FUSE SIZE
CAUTION:
M O RE TH AN O N E DISC O N NECT MEA NS MAY BE
REQUIRED TO DISCONN ECT ALL POWER TO THIS UNIT.
PTCR WILL BE HOT.
HOT GASWATER
O
W/R
JUNCTION
BOX
POWER SUPPLY
W/R
O
L1T1
CONTACTOR
L2T2
W/R
Y
BK/W(-32 O N LY)
BK
W(-1 O NLY)
GROUND
SCREW
1
1
TRA NSFOR MER
W
BU
R
BK/W
Y/W
E A RT H G ROUND
LOAD
LINE
RUN
CAP
PTCR
W
PROTECTOR
INTERNAL
COM PR ESSOR
DU MP
VALVE
RELAY
BK
TERM INAL BOX
R
C1 S2
BK
W
R3
DUMP
VALVE
BU
YR
March 2001
Page 13
Page 14
CME306 and CME456 Service Parts
1
2
60 Hz Schematic Diagram
L
( OPTIONAL)
TRANSFORMER
BI N
STAT
LINE
DUMP VALVE TIME RELAY
RELAY TRIGGER
24V
ELECTRONIC CONTROL
HOT GAS VALVE
WATER VALVE
HIGH
PRESSURE
CONTROL
(WC ONLY)
CONTACTOR COIL
L
SUMP
TEMP.
DISCHARGE
TEMP
DUMP VALVE RELAY
CONTACTS
DUMP
VALVE
CONTACTOR T 1
BIN
FULL
X- MIT
BIN
FULL
RCV.
WA T E R
PUMP
WAT ER
LEVEL
SENSOR
FAN
MOT OR
(AC ONLY)
FAN
MO TOR
(456)
(AC ONLY)
PTCR
RUN
CAP.
COMPRESSOR
January 2000
Page 14
Page 15
January 2000
L
Page 15
17-2659-01
THERMO
BIN
SUMP TEMP
SENSOR
DISCHARGE
TEMP SENSOR
BIN FULL
TRANSMITTER
BIN FULL
RECEIVER
THIS UNIT MUST
BE GROUNDED.
USE COPPER CONDUCTORS ONLY
BU
765432
1
8
7
6
5432
ELECTRONIC
CONTROL
5
1
32
4
1
32
3
1
5432
2
1
32
COMMUNICATIONS
1
1
PORT
WATER
LEVEL
SENSOR
CAUTION:
MORE THAN ONE DISCONNECT MEANS MAYBE
REQUIRED TO DISCONNECT ALL POWER TO THIS UNIT
1 DASHED LINES INDICATE FIELD WIRING WHICH MUST BE
BN
BN
WATER
SOLENOID
O
HOT GAS
SOLENOID
BK/W
O
MOT
FAN
V
Y
BK
V
V
BK/W
LY)
MOT
FAN
BN
W
/BN
R
O
V
Y
R
BK
BU
BK/W
BN
4321
9
(456 ON
W/ R
BN
TRANSFORMER
BK
11
12
LOAD
O
T1
CTOR
L1
CON TA
BU
BU
W/ B
7
8
T2
N
W/B
W/ R
1
2
BK
5
6
LINE
W
BK
O
L2
BK
Y
4
0
6
1
PUMP RELA
BN
BN / W
BU/ W
U
MOT
PUMP
JUNCTION
BOX
G/Y
1
1
POWER SUPPLY
BU
BK
BK
BU
O
4
6
ELA
DUMP R
1
6
LAY
FAN RE
(ACON
LY)
1
W/R
PROTECTOR
INTERNAL
COMPRESSOR
Y
0
4
0
R
GROUND SCREW
SEE NAMEPLATE FOR VOLTAGE REQUIREMENTS
AND MAXIMUM FUSE SIZE
EARTH GROUND
DUMP
VALV E
TIMER
BK
O
W
TERMINAL
BOX
R
C1
BK
W
CAUTION: PTCR WILL BE HOT
COMPRESSOR MAY NOT START IF PTCR IS NOT ALLOWED TO COOL
DUMP
VALV E
BU/W
BU
CAP
RUN
BK
Y/ W
PTCR
Y
S2
R3
INSTALLED IN ACCORDANCE WITH THE NATIONAL ELECTRICA
CODE AND ALL STATE AND LOCAL CODES.
L1
TRANSFOR
DUMP VALVE
RELAY CONTACTS
CONTACTOR T1
LI N
MER
24V
FUSE
(3A
)
BI N
STA
T
ELECTRONIC CONTROL
SUMP
TEMP
DISCHARGE
TEMP
WATER PUMP RELAY
COMPRESSOR
E
DUMP VALVE TIMER TRIGGER
HOT GAS VALVE
WATER VALVE
CONTACTOR COIL
PUMP RELAY COIL
DUMP VALVE
RELAY COIL
FAN RELAY COIL
BIN
BIN
FULL
RC V
WA
PUM P
.
TER
WATER
LEVEL
SENSOR
PTCR
RUN
CAP
FULL
.
X-MI T
FAN RELAY
DUMP
VALVE
.
L2
FAN
MOTOR
FAN
MOTOR
(456 ONLY)
CME456 50 Hz Air Cooled Wiring Diagram
CME306 and CME456 Service Parts
Page 16
Page 16
L
January 2000
THIS UNIT MUST
BE GROUNDED.
17-2770-01
THERMO
BIN
SUMP TEMP
SENSOR
DISCHARGE
TEMP SENSOR
BIN FULL
TRANSMITTER
BIN FULL
RECEIVER
USE COPPER CONDUCTORS ONLY
BU
HIGH PRESSURE
CONTROL
Y
1
234567
8
7
6
5
2345
1
23
4
ELECTRONIC
1
CONTROL
23
3
1
2
2345
1
COMMUNICATIONS
23
1
1
PORT
WATER
LEVEL
SENSOR
CAUTION:
SEE NAMEPLATE FOR
PROPER VOLTAGE REQUIREMENTS
AND MAXIMUM FUSE SIZE
BN
BN
WATER
SOLENOID
O
HOT GAS
SOLENOID
BK/W
O
V
R
Y
W/R
BN
BK
O
W/R
7
1
8
2
TRANSFORMER
11
5
6
12
LOAD
LINE
1
POWER SUPPLY
BK
W
BK
O
T1
T2
TACTOR
L2
L1
CON
BU
BK
4
Y
0
6
1
PUMP RELA
R
1234
9
BU
O
V
BK/W
BK
BK
V
V
BK/W
BU
W/R
BU/ W
W/BU
MOT
PUMP
MORE THAN ONE DISCONNECT MEANS MAYBE
REQUIRED TO DISCONNECT ALL POWER TO THIS UNIT
JUNCTION
BOX
G/Y
1
BU
BK
BU
O
4
6
DUMP RELAY
1
PROTECTOR
INTERNAL
COMPRESSOR
GROUND SCREW
CAUTION:
EARTH GROUND
DUMP
VALV E
TIMER
0
W
R
TERMINAL
BOX
R
C1
BK
W
RUN
R3
DUMP
VALV E
BU
BK
CAP
PTCR
S2
1 DASHED LINES INDICATE FIELD WIRING WHICH MUST BE
INSTALLED IN ACCORDANCE WITH THE NATIONAL ELECTRICA
CODE AND ALL STATE AND LOCAL CODES.
COMPRESSOR MAY NOT START IF PTCR IS NOT ALLOWED TO COOL
PTCR WILL BE HOT
L1
FUSE
BIN
STAT
TRANSFORMER
DUMP VALVE TIMER TRIGGER
LINE
24V
HOT GAS VALVE
WATE R VALVE
(3 A)
HIGH
PRESSURE
CONTROL
DUMP VALVE
RELAY COIL
CONTACTOR
COIL
PUMP RELAY COIL
L2
BU/W
ELECTRONIC CONTROL
SUMP
TEMP.
DISCHARGE
TEMP
Y/ W
Y
WATER PUMP RELAY
DUMP VALVE
RELAY CONTACTS
CONTACTOR T1
FULL
X- M
DUMP
VALV E
FULL
LEVEL
IT
RCV.
SENSOR
WATER
PUMP
WATER
BIN
BIN
PTCR
RU N
CAP
.
COMPRESSOR
CME456 50 Hz Water Cooled Wiring Diagram
CME306 and CME456 Service Parts
Page 17
Page 17
L
January 2000
17-2789-01
CAUTION:
TH AN
MORE
THERMO
BIN
TO
SUMP T
EMP.
SENSOR
DISCHARGE
TEMP.
SENSOR
BIN FULL
TRANSMITTER
BIN FULL
RECEIVER
REQUIRED
THIS UNIT MUST
BE GROUNDED.
ONE
DISCONNECT
DISCONNECT
USE COPPER CONDUCTORS ONLY
ME ANS
MA Y
BE
PO WER
7
6
54321
5
321
4
321
3
54321
2
321
1
THIS
TO
BU
8
E LECTRO NIC
COMMUNICATIONS
PORT
WATER
LEVEL
SENSOR
AL L
7654321
CO NTROL
UN IT.
1 DASHED LINES INDICATE FIELD WIRING WHICH MUST BE
JUNCTION
BN
BN
WATER
SOLENOID
O
HOT GAS
SOLENOID
B K/W
O
R
O
V
Y
R
BK
BU
B K/W
BN
4321
9
V
Y
BK
V
V
B K/W
MOT
FAN
O
BU
BK
T1
L1
BU
W/R
BN
TRANSFORMER
12
LOAD
CONTACTOR
W /BN
W/R
7
2
8
11
5
LINE
BK
T2
L2
4
6
B U/W
W /BU
1
6
O
MOT
PUMP
BK
W
P UMP RE LAY
BN
P OWER S UPP LY
BK
0
1
B N/W
1
1
BK
BK
BU
6
D UMP RE LAY
1
6
F AN REL AY
1
W/R
PROTECTOR
INTERNAL
BOX
G/Y
BU
O
4
0
4
0
R
COMPRESSOR
G ROUND SCR EW
S EE NAM EPL ATE FO R
P ROPER VOL TAG E R EQUIRE MEN TS
A ND MAX IMU M FUSE SIZE
EARTH GROUND
D UMP
VALVE
TIMER
BK
O
TERMINAL
CAP
START
W
PTCR
BOX
R
S2
C1
BK
R3
W
CAUTION:
COMPRESSOR
BU
BK
DUMP
VALVE
B U/W
Y
INSTALLED IN ACCORDANCE WITH THE NATIONAL ELECTRICA
CODE AND ALL STATE AND LOCAL CODES.
PT CR
MAY
BE
WILL
NOT
START
L1
TRANSFORMER
FUSE
(3A)
BIN
S TAT
DISCHARGE
TEMP.
DUMP VALVE
R ELAY C ON TA CTS
CONTACTOR T1
HOT.
WATER PUMP RELAY
IS
PT CR
IF
LINE
24V
HOT GAS VALVE
WATER VALVE
DUMP VALVE
RELAY COIL
ELECTRONIC CONTROL
BIN
SUMP
FULL
TEMP.
X-MIT
F AN R EL AY
D UMP
VALVE
COMPRESSOR
NO T
AL LOWE D
D UMP VA LV E TI MER TRIG GE R
CONTACTOR COIL
PUMP RELAY COIL
FAN RELAY COIL
WATER
BIN
LEVEL
FULL
RCV.
S ENSOR
WATER
PUMP
START
CA P.
TO
PTCR
FA N
MOT OR
COOL
L2
CME306 50 Hz Air Cooled Wiring Diagram
CME306 and CME456 Service Parts
Page 18
January 2000
Page 18
17-2790-01
CAUTION:
MORE
TH AN
REQUIRED
THERMO
BIN
SUMP T
SENSOR
DISCHARGE
TEMP.
SENSOR
BIN FULL
TRANSMITTER
BIN FULL
RECEIVER
THIS UNIT MUST
BE GROUNDED.
EMP.
DISCONNECT
ONE
TO
DISCONNECT
H IGH PR ESS URE
C ONTROL
WATER
LEVEL
SENSOR
USE COPPER CONDUCTORS ONLY
ME AN S
MA Y
TO
PO WE R
AL L
BU
Y
7654321
E LECTRO NIC
CO NTROL
PORT
9
8
7
6
54321
5
321
4
321
3
54321
2
321
COMMUNICATIONS
1
R
BE
THIS
V
BU
4321
S EE NAM EPL ATE FO R
P ROPER VOLTAG E R EQU IREMEN TS
A ND MAX IMU M F USE SI ZE
BN
UN IT .
WATER
SOLENOID
O
HOT GAS
SOLENOID
B K/W
O
R
O
BK
B K/W
V
Y
BK
V
V
B K/W
BK
O
BU
W/R
BN
T1
L1
BU
7
8
TRANSFORMER
11
12
LOAD
T2
L2
CONTACTOR
W /BU
W/R
LINE
BK
1
2
5
6
O
4
6
B U/W
MOT
PUMP
BK
W
BK
0
1
P UMP RE LAY
BN
1
1
P OWER S UPP LY
BK
BU
6
D UMP RE LAY
1
W/R
PROTECTOR
INTERNAL
JUNCTION
BOX
G/Y
BU
O
4
R
COMPRESSOR
0
G ROUND SCREW
EARTH GROUND
D UMP
VALVE
TIMER
W
TERMINAL
BOX
R
C1
BK
W
START
R3
CAP
PTCR
BU
S2
CAUTION:
COMPRESSOR
DUMP
VALVE
B U/W
BK
Y
1 DASHED LINES INDICATE FIELD WIRING WHICH MUST BE
INSTALLED IN ACCORDANCE WITH THE NATIONAL ELECTRICAL
CODE AND ALL STATE AND LOCAL CODES.
HOT.
WILL
NOT
START
L1
TRANSFORMER
BIN
S TAT
DISCHARGE
TEMP.
D UMP VALV E
R ELAY CON TA CT S
CONTACTOR T1
BE
PT CR
IF
LINE
24V
FUSE
(3A)
P RESSURE
DUMP VALVE
RELAY COIL
ELECTRONIC CONTROL
BIN
SUMP
FULL
TEMP.
X-MIT
WATER PUMP RELAY
D UMP
VALVE
COMPRESSOR
NO T
AL LOWE D
IS
D UMP VALV E TI ME R TR IGGE R
HOT GAS VALVE
WATER VALVE
CONTACTOR
HI GH
CONT ROL
CO IL
PUMP RELAY COIL
BIN
WATER
FULL
LEVEL
RCV.
S ENSOR
WATER
PUMP
START
CA P.
TO
PTCR
COOL
L2
PT CR
MAY
CME306 and CME456 Service Parts
CME306 50 Hz Water Cooled
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