Installation
15
© Lutz-Jesco GmbH 2021
Subject to technical changes.
210527
BA-22404-02-V03
Chlorine changeover unit
C 7520
Operating instructions
7.4.1 Terminal plan
Processor
LED
vacuum
JP5
JP3
LED
pressure
1
10
9
8
7
6
5
4
3
2
19
18
17
16
15
13
12
11
21
20
14
30
29
28
27
26
25
24
23
22
JP2
JP4
Fig. 7: Control circuit board
Terminal
Description
Function
1+2
N
Voltage supply input
3+4
L
5+6
PE
7
PE
Voltage supply for motor 2
(ball valve right)
8
N
9
Close
10
Open
11
PE
Voltage supply for motor 1
(ball valve left)
12
N
13
Close
14
Open
15
Com
Relay output "alarm"
max. 3 A/250 VAC
NC (15– 17 closed with power failure)
16
Off
17
On
18
Com
Relay output "empty"
max. 3 A / 250 VAC
NC (18– 20 closed with power failure)
19
Off
20
On
21
close
Position switch in motor 2
(ball valve right)
22
open
23
GND
24
close
Position switch in motor 1
(ball valve left)
25
open
26
GND
27
GasW.
Gas warning device input
closed = alarm
28
GND
Tab. 8: Terminal connection
Terminal
Description
Function
29
Mano.
Contact pressure gauge switch
closed = chlorine shortage
30
GND
Tab. 8: Terminal connection
7.4.2 Jumper settings
The jumpers were set voltage-free The change becomes active once the
voltage supply has been switched on.
Jumper Name
Position
Function
JP1
almost
closed
Both motors activate at the
same time.
open (state of
delivery)
The reserve battery valve opens
only after the valve of the active
battery has closed.
JP3
Pressure
closed (state of
delivery)
The software of the C 7520 is
activated. JP1 and JP5 must be
open.
open
The software of the C 7522 is
activated.
JP 5
Rest
evacua-
tion
closed
Residual emptying activated
open (state of
delivery)
Residual emptying deactivated
Tab. 9: Jumper settings
JP1 (open)
JP3 (closed)
JP5 (open)
Tab. 10: Mating diagram jumper
JP1