Replacing Pc Board Ground Fuses - Fronius CL 44.4 Delta Serviceanleitung

Replacing PC board ground fuses

Replacing PC
board ground fus-
es
116
(1) (1)
(5)
(4)
(4)
WARNING! An electric shock can
be fatal. Danger from grid voltage
and DC voltage from solar mod-
ules.
Prior to all work on the inverter,
make sure that the AC and DC
wires are not charged.
Open both cabinet doors
1
Remove right lower cover plate by re-
2
moving the TX 25 screws (1)
Remove fuse (3) and / or plastic slugs
3
and keep them for the new PC board
(5)
Disconnect lines (5) (flathead screwdri-
4
ver)
(4)
Remove TX 20 screws (4) and PC
5
board
Install new PC board and secure using
6
TX 20 screws (4) - 2.5 Nm
(3)
CAUTION! Never install two con-
ductive fuses / slugs on the PC
(4)
board ground fuse - it can cause a
short circuit.
Reinsert all fuses from the old PC
7
board
Connect lines (5) - 1.5 Nm
8
Turn on the circuit breaker (2)
9
Install cover plate using TX 25 screws
10
(1) - 2.5 Nm