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PR0-PAC SYSTEM OWNER INSTALLATION MANUAL
ELECTRICAL CIRCUIT DIAGRAMS
14
PROPAC 30 BH THREE PHASE (400V 3N~ 50Hz)
NOTE
MCB CONTACTS / MCB ALARM CONTACTS / MCB AUX CONTACTS SHOWN WITH CIRCUIT BREAKER MANUALLY SWITCHED TO THE ON CONDITION
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
5
6 (N/C)
3
4 (N/C)
1
2 (N/C)
FAN CIRCUIT BREAKER
TRIP / OFF = BREAK CONTACT
DELAY TIMER 1
(12 HOUR)
A1
A2
RELAY (R1)
18 (N/O)
(COM) 15
A1
A2
16 (N/C)
14
11 (N/O)
RELAY (R3)
A
(COM) 7
DEFROST STAT
(N/C) L
H (N/O)
(BREAKS TO H
ON TEMP
FALLING)
C (COM)
OUT 1
[RUN] (N/O) 2
STANDBY SWITCH
(COM) 1
SOFT START THERMAL
O/LOAD &
FAULT LAMP
IF FITTED
STARTER OR EXTERNAL
FLOW SWITCH
LP SWITCH
(N/C) L
(BREAKS TO 'H' ON
PRESSURE FALLING)
HP SWITCH
(N/O) L
(BREAKS TO 'L' ON
PRESSURE RISING)
FAN THERMAL
CUT OUT
COMPRESSOR MOTOR
PROTECTOR
FAN MCB AUX
BLOCK : ALARM
TRIP = BREAK CONTACT
COMPRESSOR MCB
AUX BLOCK : ALARM
TRIP = BREAK CONTACT
5
6 (N/C)
L3
3
4 (N/C)
L2
1
2 (N/C)
L1
CONTROL CIRCUT
PHASE ROTATION
BREAKER
RELAY
TRIP / OFF = BREAK CONTACT
L3 L2 L1
5
6 (N/O)
3
4 (N/O)
1
2 (N/O)
21
22 (N/C)
DELAY TIMER 2
(6 MINS)
A1
A2
(COM) 15
18 (N/O)
16 (N/C)
COMPRESSOR
CONTACTOR
53
54 (N/O)
A1
A2
RELAY (R2)
B
B
1 (N/C)
(N/O) 6
(N/O) 4
DEFROST
LIGHT
FAN
CONTACTOR
5
6 (N/C)
5
6 (N/O)
3
4 (N/C)
3
4 (N/O)
1
2 (N/C)
1
2 (N/O)
FAN CIRCUIT BREAKER
TRIP / OFF = BREAK CONTACT
A1
A2
9
8
SMART CLOCK
FEED TERMINALS
10
DIGITAL STAT (1 STAGE)
SENSOR
MAKES 4 TO 6 ON TEMP FALLING
11
3 (N/C) [STANDBY]
MCB SETTINGS
CONTROL
COMPRESSOR
2.5A
22.9A
H (N/O)
C (COM)
H (N/C)
FAULT
LIGHT
C (COM)
TK (N/C)
TK
(N/C)
96 (N/C)
95
96 (N/C)
95
12 (N/C)
11 (COM)
MAINS LIGHT
(W)
(V)
(U)
COMPRESSOR
HEATER
A
9 (COM)
7 (COM)
FAN
FAN
0.8A
NEUTRAL
SD566251 ISSUE 36
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