Alto Neptune 5, Руководство по обслуживанию, Страница: 55 / 61

Neptune_GB_Ver.2.0_10/03
7.
Adjustment / Test
400V
400V
230V
230V
400V 400V
230V
230 V
Electrical connection
Some models are equipped with a star delta switch S2 to change between 230 V and 400 V.
M
1~
A1
A2
K2
T1
4
8V AC
24V AC
U2 V2 W2
M
3~
V1 W1 U1
M1
L2 L3 L1
X11
T2
M2
PE
13 (17)
14 (18)
1 3 5
2 4 6
A1
A2
K1
1
02
S1
8a 7a 6a 5a 4a 3a 2a 1a
1 2 3 4 5 6 8 7
K1
S2
F11
11
14, 24
1a
2a
2
1
7
6
Xma
XMb
3 1 2 4 5 6 8
400V
230V
Com
On this diagram the switch S2 is turned
into star connection for 400 V.
In this position the transformer is
connected to
the primary pin 7 (red
line).
Three of the motor wires are
connected in a star point (thick purple
line). The burner motor and ignition
transformer are connected to this star
point and therefore supplied with 230 V
only.
The machine is set for 230 V but
supply is 400 V. The motor windings
which are made for 230 V are now fed
with 400 V.
The burner motor and the ignition
transformer are now fed with 400 V.
Worst case:
53.
Before connecting devices with voltage changeover:
Check
that the pre-selected voltage on the machine
corresponds with the voltage of the electrical installation.
Otherwise the electrical devices of the machine can be
destroyed!
?
Caution!
?? 230 V / 400 V ??
Star / delta switch S2 is located on the backside of the electrical box
and easy to adjust with a slotted screwdriver.