Pressure-type Chlorine Changeover Unit C 7520
BW 2 24 04 / 2
Lutz-Jesco GmbH
Improved changes are always reserved without notice.
3. Wiring diagram
2.2 Electrical installation
Before connecting the power supply please check if
the operating voltage of the motor ball valves
corresponds to local mains voltage. The control unit
itself has a wide-range power pack for 100 – 240VAC
50-60Hz.
If the motor valves do not comply with the local
mains voltage they might be destroyed!
The changeover unit is operational as soon as the
power supply is connected. Only for remote
signaling of an empty cylinder/battery and the
external alarm contact another connection is
required. The terminal assignment and function of
the individual terminals can be seen in the wiring
diagram.
The external alarm contact (terminals 27 and 28)
causes both motor valves to close in the case of a
chlorine gas alarm (signaled by the chlorine gas
sensor).
After an interruption of the power supply the control
unit will switch automatically to the side used before
in order to stick to the change rhythm and to keep
the standby battery 100% full.
Unused cable glands in the control unit must be
sealed in order to maintain the degree of protection.
Set jumper:
jumper closed =
function activated
For pressure operation set the jumpers as follows:
JP1 Schnell:
open=
no overlapping -
motor valves are operated one
after the other
JP3 Überdruck:
closed=
setup for excess pressure
operation
JP5 Restentleerung:open=
periodical overall emptying off
L1
N
PE
1
100-240V/ 50-60 Hz
Motor 2
PE
N
Motor 1
L1(
ri
ght
)
L
1
()
PE
N
L1
(
)
alarm
co
m
of
f
on
empty
co
m
of
f
on
GN
D
GN
D
GN
D
GN
D
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
L1
(
)
N
L1
PE
Slot RS 485
(Slot of programming)
JP1
JP3
JP5
JP2
1
5
1
Relay
Switching
power pack
ri
gh
t
ri
ght
ri
gh
t
lef
t
lef
t
lef
t
gauge
Pressure
device
Gas warning
Motor 1
signal
Repeating
Motor 2
signal
Repeating
