Flue Exhaust Fan; Convection Fan; Fan Replacement - Accorroni MEC25-85 Technical Information

FLUE EXHAUST REPLACEMENT
Model 85
Flue exhaust
header
Fan
Scroll

8.9 FLUE EXHAUST FAN

8.9.1 Models 25 - 30 - 35 - 50 - 57
Disconnect the motor electrical connection and
loosen the three scroll fastening screws. Gently
remove the motor-fan unit and, respecting the
original position, insert the new unit. Tighten the
screws and re-establish the electrical connection.
Make sure the fan rotates correctly and without
friction (fig. 38).
8.9.2 Model 85
Disconnect the fan connection from the terminal
strip on the air heater electric board. Remove the
top panel of the air heater housing using a suitable
tool, lifting until releasing the snap fasteners.
Loosen the duct clamps on the exchanger fittings
and extract the flexible stainless steel ducts from
FAN REPLACEMENT (MEC)
Motor fastening
screws
Grommets
Protection grille
Stainless
steel ducts
Duct
clamps
Motor
Fig. 39
Grille fastening
screws
Fan
Fig. 40
the fittings. In the rear of the appliance,
corresponding to the fitting with the flue exhaust
duct, unscrew the four fan scroll fastening screws.
Extract the unit, being careful not to damage the
gasket between the fan scroll and the rear panel
of the air heater.
Disassemble the flexible stainless steel ducts
from the unit and insert them on the new fan,
checking that they have not been damaged. Insert
the new unit reversing the order of the previous
operations. Carefully tighten the clamps on the
fittings of the flexible stainless steel ducts to
ensure a proper seal; re-establish the electrical
connection (fig. 39).

8.10 CONVECTION FAN

8.10.1 MEC series axial fan
Disconnect the fan electrical connection from the
terminal strip on the printed circuit board of the air
heater electric panel. Unscrew the four screws
that attach the fan grille to the rear panel of the air
heater. Extract the unit and release the fan from
the grille, removing the four fastening screws.
Clean the grille, removing all dust deposits and
attach the new fan, making sure to use the original
screws since thread depths of more than 5 mm
might damage the motor. Re-insert the fan-grille
unit into the housing and attach it with the screws,
inserting the grommets including spacers (fig.
40). Re-establish the electrical connection making
sure to respect the original connection as shown
in the diagrams and attaching the cables using
suitable clamps.
FAN REPLACEMENT (MEC C)
Fastening screws
Models 50-57-85
page 36
Screws
Grille
Fan
Fastening screws
Models 25-30-35
Fig. 41