Calorex Pro-Pac 45 - Page 19

MCB CONTACTS / MCB ALARM CONTACTS / MCB AUX CONTACTS SHOWN WITH CIRCUIT BREAKER MANUALLY
SWITCHED TO THE ON CONDITION
WATER FLOW SWITCH CONTACTS SHOWN WITH WATER FLOW AT MAXIMUM RATE
ALL OTHER CONTACTS SHOWN IN DE-ENERGISED STATE BUT WITH REFRIGERATION CIRCUIT FULLY CHARGED
WHERE CONTACTS ARE MARKED (N/O) OR (N/C) ON CIRCUIT DIAGRAM ABOVE CONDITIONS APPLY
MCB SETTINGS
23.8A2.5A
CONTROL
COMPRESSORS
1.1A
FANS
STARTER OR
OUT 1
COMPRESSOR 1 HEATER
FAULT LIGHT
MAINS LIGHT
L1 L2 L3
N
14 (N/O)
95
(N/C) 96
95
(N/C) 96
FAN 1 MCB AUX BLOCK:ALARM
TRIP = BREAK CONTACT
TB
FAN 1 THERMAL CUT OUT
FAN 2 THERMAL CUT OUT
TB
FAN 2 MCB AUX BLOCK:ALARM
TRIP = BREAK CONTACT
(N/C) TB
(N/C) TB
(N/C)
(N/C)
COMPRESSOR 2 MOTOR PROTECTOR
COMPRESSOR 1 MOTOR PROTECTOR
EXTERNAL FLOW SWITCH
SOFT START THERMAL O/LOAD & FAULT LIGHT
IF FITTED
(COM) 1
RUN (N/O) 2
3 (N/C)
STANDBY
STANDBY
SWITCH
6 (COM)
1 (L)(N) 2
(N/O) 4
(N/C) 5
MAKES 4 TO 6 ON
TEMP FALLING DIGITAL STAT (1 STAGE)
5
PHASE
ROTATION
RELAY
CONTROL CIRCUIT
BREAKER
TRIP / OFF = BREAK CONTACT
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
AB
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
BREAKS TO 'H' ON
AB
(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
TEMPERATURE
FALLING
DEFROST
BREAKS TO 'H' ON
FRIDGE CCT 2
TEMPERATURE FALLING
RELAY (R5)
1 (N/C)
(COM) 7 4 (N/O)
53
(N/C) 54
COMP 1 MCB AUX BLOCK
TRIP / OFF = BREAK CONTACT
15 (COM)
18 (N/O)
16 (N/C)
DELAY TIMER (2)
A1A2
COMPRESSOR 1
CONTACTOR
A1A2
FAULT LIGHT
FRIDGE CCT 2
2
A2 A1
COMPRESSOR 2
CONTACTOR
(COM) 9
53 54 (N/C)
3 (N/C)
6 (N/O)
COMP 2 MCB AUX BLOCK
TRIP / OFF = BREAK CONTACT
15 (COM)
16 (N/C)
18 (N/O)
A1A2
95
(N/C) 96
COMP 2 MCB AUX BLOCK
TRIP = BREAK CONTACT
(COM) C
(N/O) L H (N/C)
HP SWITCH BREAKS TO ‘L’
ON PRESSURE RISING
(N/O) H
L (N/C)
LP SWITCH BREAKS TO 'H' ON PRESSURE FALLING
AB
RELAY (R1)
15
(COM)
18 (N/O)
16 (N/C)
A1A2
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
A1A2
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
A1A2
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
COMPRESSOR 2
CONTACTOR
21 (AUX)(N/C) 22
COMPRESSOR 2 HEATER
10 11
7 6
FAULT LIGHT
FRIDGE CCT 1
1
95 96 (N/C)
COMP 1 MCB AUX BLOCK
TRIP = BREAK CONTACT
C (COM) L (N/O)
HP SWITCH BREAKS TO ‘L’
ON PRESSURE RISING
C (COM) H (N/O)
LP SWITCH BREAKS TO 'H'
ON PRESSURE FALLING
H (N/C)
L (N/C)
INTERLOCK TERMINALS
U1
V1
W1
U1
V1
W1
(6 MINS)
DELAY TIMER (3)
(7 MINS)
63 (AUX)(N/O) 64
FRIDGE CCT 2
VALVE COIL
(LIQUID LINE SHUT OFF)
(N/C)
WATER FLOW SWITCH
BREAKS ON WATER
FLOW RATE FALLING
(N/C) 1
(N/O) 4 7 (COM)
AB
RELAY (R6)
FLOW OK LIGHT
FRIDGE CCT 1
VALVE COIL
(LIQUID LINE SHUT OFF)
63 (AUX)(N/O) 64
FRIDGE CCT 2
(COM) C
FRIDGE CCT 1
Pro-Pac 90BM THREE PHASE (400V 3 N~ 50Hz)
19
SD566252 ISSUE 51