'-f
Supplement to Manual 818-1 ADD
'T1
1.818
o{1
0
,1
OPERATION
N° MA.
642-00
:
Charactristics
oJ
t/i
«
!R01f) 20
»
hati;,
sstm Op.
MA.
642-00
3
When starting
: capsule is
subjected to vacuum
Rotation
axis
/
Flap
DIAGRAM.NO.
1
0
0
Vai
0
c
0
0
z
E
0
0.
COLD
AIR
SUPPLY
SHUT OFF
WARM
AIR
sUpp
Closing
plate
fo
warm
''
DIAGRAM
No.
2
Situated at the air-filter
inlet.
the vacuum capsule controls
a flap and
a
closing
plate allowing simultaneously supply
or no supply of warm air and
no
supply
or
supply of cold air.
When starting
(
Diagram
1
)
the capsule
is
subjected
to
vacuum, the flap
stops
the supply
of cold
air, and
the
closing
plate aliows the supply of
warm air
to
the air
filter.
When the effect
of
the
vacuum
ceases, the capsule
returns
to
length
Li
(
Diagram
2
)
:
the
flapopens, allowing
supply
of cold air
and the
closing
plate stops
the suppy of
warm air.
The
vacuum
capsule
operates via
a
thermal
sensor.
Flap
to
air
fil
ter
,
to
air filter
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