CONTROL
2.5A
MCB SETTINGS
FANS 1 & 2
2.2A
COMPRESSORS 1 & 2
30.7A
WHERE CONTACTS ARE MARKED (N/O) OR (N/C) ON CIRCUIT DIAGRAM
ABOVE CONDITIONS APPLY
ALL OTHER CONTACTS SHOWN IN DE-ENERGISED STATE BUT WITH
REFRIGERATION CIRCUIT FULLY CHARGED
WATER FLOW SWITCH CONTACTS SHOWN WITH WATER FLOW AT
MAXIMUM RATE
MCB CONTACTS / MCB ALARM CONTACTS / MCB AUX CONTACTS SHOWN
WITH CIRCUIT BREAKER MANUALLY SWITCHED TO THE ON CONDITION
INTERLOCK TERMINALS
PHA
SE
RO
TA
TION
RELA
Y
ST
AR
TER OR
EXTERNAL
FL
O
W S
WITCH
SOFT ST
AR
T
THERMAL
O/L
O
AD &
FA
UL
T LIGHT
IF FITTED
FA
UL
T
LIGHT
FAN 1 THERMAL
CUT OUT
FAN 2 THERMAL
CUT OUT
FAN 1 MCB
A
UX BL
OCK : ALARM
FAN 2 MCB
A
UX BL
OCK : ALARM
TRIP = BREAK CONT
A
CT
COMP 1 MCB A
UX BL
OCK
TRIP / OFF = BREAK CONT
A
CT
CONTROL CIRCUIT
BREAKER
L3
L2
L1
FRIDGE CCT
2
FRIDGE CIRCUIT 1
COMP HP S
WITCH
(BREAKS T
O 'L
' ON PRES
SURE RISING)
FRIDGE CIRCUIT 1
COMP LP S
WITCH
(BREAKS T
O 'H' ON PRES
SURE F
ALLING)
FA
UL
T LIGHT
OUT 1
MAINS LIGHT
N
14 (N/O)
96
(N/C) 95
96
(N/C) 95
TB
TB
(N/C) TB
(N/C) TB
(COM) 1
RUN (N/O) 2
3 (N/C)
ST
ANDB
Y
ST
ANDB
Y
SWITCH
6 (COM)
1 (L)
(N) 2
(N/O) 4
(N/C) 5
MAKES 4 T
O 6 ON TEMP F
ALLING
DIGIT
AL ST
AT ( 1 ST
A
GE)
5
TRIP / OFF = BREAK CONT
A
CT
1
3
2 (N/C)
4 (N/C)
6 (N/C)
L1
L2
L3
11 (COM)
12 (N/C)
9 (L)
(N) 8
SMART CLOCK
FEED TERMINALS
A
B
4 (N/O)
1 (N/C)
6 (N/O)
3 (N/C)
SENSOR
10
11
(COM) 7
(COM) 9
RELAY (R2)
(COM) C
(N/O) H
L (N/C)
DEFROST ST
AT
BREAKS T
O 'H' ON
A
B
(N/C) 1
(N/O) 4
7 (COM)
RELAY (R3)
DEFROST LIGHT
B
B
1 (N/C)
4 (N/O)
(COM) 7
3 (N/C)
6 (N/O)
(COM) 9
RELAY (R4)
7 (COM)
(N/O) 4
(N/C) 1
(COM) C
(N/O) H
L (N/C)
A
A
FRIDGE CCT 1
TEMPERA
TURE F
ALLING
DEFROST ST
AT
BREAKS T
O 'H' ON
FRIDGE CCT 2
TEMPERA
TURE F
ALLING
RELAY (R5)
1 (N/C)
(COM) 7
4 (N/O)
33
(N/C) 34
COMP 1 MCB A
UX BL
OCK
TRIP / OFF = BREAK
CONT
A
CT
15 (COM)
18 (N/O)
16 (N/C)
DELAY TIMER (2)
A2
A1
COMPRESSOR 1
CONTACTOR
A1
A2
2
A1
A2
COMPRESSOR 2
CONTACTOR
(COM) 9
33
34 (N/C)
3 (N/C)
6 (N/O)
COMP 2 MCB A
UX BL
OCK
TRIP / OFF = BREAK CONT
A
CT
15
(COM)
16 (N/C)
18 (N/O)
A1
A2
44
(N/C) 43
COMP 2 MCB A
UX BL
OCK
TRIP = BREAK CONT
A
CT
(COM) C
(N/O) L
H (N/C)
FRIDGE CCT 2 : HP S
WITCH
BREAKS T
O 'L
' ON PRES
SURE RISING
(COM) C
(N/O) H
L (N/C)
FRIDGE CCT 2: LP S
WITCH
BREAKS T
O 'H' ON PRES
SURE F
ALLING
A
B
RELAY (R1)
15 (COM)
18 (N/O)
16 (N/C)
A1
A2
1
3
5
(N/C) 2
(N/C) 4
(N/C) 6
FAN
1
DELAY TIMER (1)
(12 HRS)
FAN 1 CIRCUIT BREAKER
TRIP / OFF = BREAK CONTACT
1
3
5
(N/O) 2
(N/O) 4
(N/O) 6
A2
A1
FAN 1 CONTACTOR
1
3
5
(N/C) 2
(N/C) 4
(N/C) 6
FAN
2
FAN 2 CIRCUIT BREAKER
TRIP / OFF = BREAK CONTACT
1
3
5
(N/O) 2
(N/O) 4
(N/O) 6
A2
A1
FAN 2 CONTACTOR
1
3
5
(N/C) 2
(N/C) 4
(N/C) 6
COMP
1
COMPRESSOR 1 CIRCUIT BREAKER
1
3
5
(N/O) 2
(N/O) 4
(N/O) 6
COMPRESSOR 1
CONTACTOR
21 (AUX)
(N/C) 22
TRIP / OFF = BREAK CONTACT
1
3
5
(N/C) 2
(N/C) 4
(N/C) 6
COMP
2
COMPRESSOR 2 CIRCUIT BREAKER
TRIP / OFF = BREAK CONTACT
1
3
5
(N/O) 2
(N/O) 4
(N/O) 6
21 (AUX)
(N/C) 22
COMPRESSOR 2 HEATER
10
11
7
6
FA
UL
T LIGHT
FRIDGE CCT 1
44
43 (N/C)
C (COM)
L (N/O)
C (COM)
H (N/O)
1
H (N/C)
L (N/C)
L1
L2
L3
L1
L2
L3
(6 MINS)
DELAY TIMER (3)
(7 MINS)
13 (AUX)
(N/O) 14
FRIDGE CCT 2
VALVE COIL
(LIQUID LINE SHUT OFF)
(N/C)
W
ATER FL
O
W S
WITCH
BREAKS ON W
ATER
FL
O
W RA
TE F
ALLING
(N/C) 1
(N/O) 4
7 (COM)
A
B
RELAY (R6)
W1
W1
V1
V1
U1
U1
FLOW OK LIGHT
FRIDGE CCT 1
VALVE COIL
(LIQUID LINE SHUT OFF)
COMPRESSOR 1 HEATER
13 (AUX)
(N/O) 14
COMPRESSOR 2
CONTACTOR
TRIP = BREAK CONT
A
CT
Pro-Pac 140BM THREE PHASE (400V 3 N~ 50Hz)
20
SD566252 ISSUE 51
PR0-PAC SYSTEM OWNER INSTALLATION MANUAL
