17
5.3 Replacing the Internal Fuse (Optional) – 40 to 300 A Models
CAUTION: cut off power before and
during fuse substitution procedure.
Every 6-12 months (depending on the dust level of
the installation) blow a compressed air jet downward
through the upper rectangular cooling grilles (on the
side opposite the fan). This will clean the internal heat
dissipater and the cooling fan.
1. Undo the cover fastening screw (1)
2. Remove the cover following the movement indicat-
ed by the arrow (2)
3. In this way the fuse is discovered (3)
4. Loosen the two fastening nuts of fuse by means of
tube-shaped spanner N.13 (CFW 40...150)
5. It is not necessary to remove the nuts as the fuse
N.17 (CFW 200...300 A) is slipped off its seat by
turning it (4) and extracting it (5) as indicated by the
arrows
6. Insert the new fuse as indicated by the arrows (6,7)
WARNING: the washer must stay between the
nut and the fuse (NOT under the fuse).
7. Fasten the two nuts by the 3-4 Nm torque tube-
shaped spanner N. 13 (CFW 40...150) ,tube-shaped
spanner N17 (CFW 200...300 A)
8. Replace the cover pointing it to the lower part (pay
attention to the connection tooth)
9. Fasten the cover by the specific screw in side (1)
6
7
1
2
3
4
5
Summary of Contents for CFW
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