CONTROL
2.5A
MCB SETTINGS
FAN
0.8A
COMPRESSOR
22.9A
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
COMPRESSOR
CONTACTOR
COMP
CIRCUIT BREAKER
TRIP / OFF = BREAK CONTACT
5
3
1
6 (N/C)
4 (N/C)
2 (N/C)
FAN MCB AUX BLK : ALARM
TRIP = BREAK CONTACT
COMPRESSOR MCB AUX BLK : ALARM
TRIP = BREAK CONTACT
95
96 (N/C)
95
96 (N/C)
INTERLOCK
TERMINALS
10 11
(NC)
TB
TB
FAN THERMAL CUT OUT
TRIP / OFF = BREAK CONTACT
FAN CIRCUIT BREAKER
5
3
1
6 (N/C)
4 (N/C)
2 (N/C)
6 (N/C)
4 (N/C)
2 (N/C)
CONTROL CIRCUIT BREAKER
5
3
1
TRIP / OFF = BREAK CONTACT
L3 L2
L1
PHASE ROTATION
RELAY
L3
L2
L1
14 (N/O)
63 64 (N/O)
COMP
CONTACTOR
AUX BLOCK
MAINS LIGHT
NEUTRAL
12 (N/C)
11 (COM)
(COM) 1
FAN CONTACTOR
5
3
1
6 (N/O)
4 (N/O)
2 (N/O)
FAN
4
(N/C)
3 (N/O)
DEFROST LIGHT
REVERSING VALVE
2 (N)
LIQUID LINE SHUT
OFF VALVE
(N/C)
C (COM)
H (N/C)(N/O) L
C (COM)
H (N/O)
(N/C) L
FAULT LIGHT
COMPRESSOR MOTOR
PROTECTOR
HP SWITCH
(BREAKS TO 'L' ON
PRESSURE RISING)
LP SWITCH
(BREAKS TO 'H' ON
PRESSURE FALLING)
STARTER OR EXTERNAL
FLOW SWITCH
SOFT START THERMAL
O/LOAD &
FAULT LAMP IF FITTED
(N/O)
WATER FLOW SWITCH
A1 A2
A
B
RELAY (R1)
WATER FLOW OK LIGHT
(COM) 1
3 (N/C) [STANDBY]
[RUN] (N/O) 2
STANDBY SWITCH
(COM) 6
4 (N/O)
2 (N)
1 (L)
OUT 1
MAKES 4 TO 6 ON TEMP FALLING
11
10
SENSOR
DIGITAL STAT (1 STAGE)
SMART CLOCK FEED TERMINALS
89
5
3
1
6 (N/O)
4 (N/O)
2 (N/O)
COMPRESSOR
14 11 (N/O)
DELAY TIMER 2
21 22 (N/C)
A1
A2
(W1)
(V1)
(U1)
HEATER
(N/O)
5 (N/C)
(N/O) 4 1 (N/C)
(COM) 7
DEFROST STAT
RELAY (R2)
(COM) 15
18 (N/O)
16 (N/C)
DELAY TIMER 1 (12 HOUR)
A1
A2
A1 A2
INTERLOCK
TERMINALS
MAKES 1 TO 3 ON TEMP FALLING
SOFT START
IF FITTED
Pro-Pac 30BMY THREE PHASE (400V 3 N~ 50Hz)
21
SD566252 ISSUE 51
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