c.
Fit the small eyelet of the spring, with
the long stem, on the cap pin (on both
components) (fig. 17).
d.
Insert the two caps (with spring), on
the front part of the external grid, on
its two housings, pulling until it clicks
(fig. 18) and couple the two chains to
the large eyelet of the spring.
e.
Using one hand, grip the two chains
connected to the grid;
f.
Bend the external grids back, gripping
them with your free hand where they
bend, and insert your fingers inside the
single fins (fig. 19).).
g.
Insert your arm into the pipe until the
grid protrudes completely outwards.
h.
Reopen the grid, being careful to keep
your fingers inside the fins.
i.
Turn the grid until the fins are fully
horizontal and tilted downwards.
l.
Pull the chain, tensioning the spring,
and couple the chain ring to the pin
of the inner flange through which the
pipes pass (fig. 20).
m. Use hand shears to cut off any excess
chain links.
Use exclusively the supplied
grids (F), or grids with like char-
acteristics.
17
18
19
20
UNICO AIR ON/OFF
F
F
F
EN - 19