Maintenance and care
59
If the status LED
on the power module does not go on, even though the module has
been correctly inserted into a live low-voltage circuit and connected with the supply
module, the fuses F1 and F2 must be checked.
Proceed as follows to check fuse F1 and to replace it if necessary:
Step Action
1
Remove the covers
on both sides
.
2
Loosen the hexagon socket screws
on both sides
.
3
Remove the fuse and check it for integrity.
4
Insert a fuse, or if necessary, a replacement fuse sold as a special accessory
(see page 10), with the same characteristics.
5
Use a torque spanner to secure the fuse, using the two hexagon socket screws.
Tighten the screws with
a torque of 20 Nm
.
6
Put the covers back on.
Replacing fuses in
power modules
