WARNING Only licensed
experts may install electrical components. They must adhere to local and state
legislation and regulations.
WARNING After disconnecting
the power cable, dangerous voltages can exist for some time. To avoid injury,
disconnect the power and discharge circuits before touching them.
WARNING Do not service the
system alone. Do not reach into parts and assemblies that are AC (mains) powered and
live except in the presence of someone who can provide first aid.
5.5-mm wrench
T5 Torx key
3-mm flathead screwdriver
Make sure that you have the replacement spare part available.
Replacing AC power supply
board
1
Battery switch
2
AC (mains) power switch
3
Screw for protective cover (4 pcs)
4
AC power supply board
In 2022, the AC (mains) power switch
(1P+1 circuit breaker) was replaced with an AC (mains) power switch (2P circuit
breaker).
Switch off both AC (mains) power switch and battery switch.
Make sure that there is no AC (mains)
power available for the system.
Remove the protective cover in front of the AC power supply board.
Remove the 4 spacers.
Disconnect cabling from the power supply module.
Disconnect wires from connectors 1 and
2. Disconnect connectors 3 - 5.
1
Connector 1
2
Connector 2
3
Connector 3
4
Connector 4
5
Connector 5
6
Voltage switch
Open the 2 screws and remove the AC power supply board.
Insert the new power supply module and attach with 2 screws in place.
Reattach the spacers.
Connect wires to connectors 1 and 2 as follows.
Pin
Color
Description
Pin
Color
Description
14
Green
24 V AC 270 VA
18
Black1
Primary circuit 1
15
Blue
24 V AC 270 VA
19
Brown1
Primary circuit 1
16
Red
18 V AC 90 VA
20
Black
Primary circuit 2
17
Yellow
18 V AC 90 VA
21
Brown
Primary circuit 2
CAUTION Check carefully the
wiring, especially the brown and black wires.
Attach connectors 3 - 5.
Set the voltage switch to the correct voltage (115 V or
230 V).
Attach the protective cover in front of the AC power supply board.
Switch on power from the AC (mains) power switch and battery switch.