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.
WARNING Do not replace the
battery with a battery of an incorrect type. If you do, there is a risk of
deflagration. Dispose of used batteries according to statutory regulations.
3-mm Allen key (of FD70 toolkit)
Cable ties
Side-cutting pliers
The following instructions are applicable
only to the 12 V / 2.3 Ah backup batteries supplied by Vaisala.
Make sure that you have the replacement spare part available.
Switch off both AC (mains) power switch and battery switch.
Make sure that there is no AC (mains)
power available for the system.
1
Battery switch
2
AC (mains) power switch
3
Battery charger assembly
In 2022, the AC (mains) power switch
(1P+1 circuit breaker) was replaced with an AC (mains) power switch (2P circuit
breaker).
Disconnect the connectors from the battery charger and the backup battery.
1
Backup battery and battery charger assembly
2
Fixing screw (2 pcs)
3
Cable tie holder (2 pcs)
4
Connector 1
5
Connector 2
Replace the battery charger assembly, but keep the battery.
Connect the cables from the battery charger to the backup battery:
Insert the red battery cable into the
flat cable connector in the positive ( + ) terminal in the
backup battery.
Insert the black battery cable into
the flat cable connector in the negative ( ˗ ) terminal in the
backup battery.
Place the backup battery in the replacement battery holder.
Mount the assembly to the interface unit, and fix in place with 2 screws.
WARNING Make sure that the
battery switch in in the OFF position during mounting.
Use the 3-mm Allen key delivered in the
FD70 tool kit.
Attach the 2 connectors.
Connect the backup battery cable to the cable tie holders on the side of the power
board.