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4-2012
Blitz 45 - 50 - 55
19
4.3 - FAN SERVO AMPLIFIER
It is positioned in the unit front section and protected by a plastic casing.
Centrifugal fan
The
front-engaging clutch
assembled on the fan shaft allows the operation of the centrifugal pump
whitout the fan (for versions in which this is envisaged).
An air intake predisposed on the casing external edge is connected, by means of a pipe equipped with
a cock, to the tank inner agitator.
Through this tap it is possible to carry out or exclude pneumatic agitation.
The closed vanes-type impeller is realized in dynamically balanced sheet steel; the air intake opening
on the casing is protected by a grating, especially foreseen for this purpose.
Servo amplifier
It is equipped with an automatic tensioner of the
driving poly-V belts that keeps the belt tension
constant, avoiding slipping and wear. A
free-
wheeling gear (
for the version where forese-
en) is included between the Power Take-off of
the servo amplifier and the fan control pulley
(refer to the picture).
In case of sudden decelerations or unexpected
engine stoppage, this allows the fan to continue
its free rotation, thus avoiding extreme mechan-
ical stresses to be transmitted to the drive mem-
bers
POWER
TAKE-OFF
(PTO)
PUMP
DRIVE
TRAPEZOID
BELT
00014
AUTOMATIC
BELT
TIGHTENER
PUMP
LOWER
PULLEY
RELEASE
FREE
WHEEL
FAN
CONTROL
POLY-V BELT
00402
00014
00251
FAN
SWINGING
HOUSING
COLLAR
NUT
PNEUMATIC SHAKER
AIR INTAKE
PROTECTION
GRILLE
Содержание BLITZ 45
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