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Idiomas disponibles
Idiomas disponibles
Setting the pace since 1953
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6.5
LUBRICATION OIL ADJUSTMENT
The adjustment of oil delivery, in automatic lubrication, is carried out at our factory during
fi nal testing of the Rotary blades vacuum pump.
If for a particular reason a different setting is required, proceed as follows: remove the pin
cover (see Figure 7), loosen the nut "C" and then act on the "A" adjustment pin.
By rotating clockwise lower oil delivery is obtained (-), and by rotating anticlockwise higher
oil delivery is obtained (+). When adjustment has been completed tighten lock nut "C" and
screw cover.
7 - OVERPRESSURE AND VACUUM ADJUSTMENT VALVES
The following diagram describes the standard valves (O), those available upon request (X) and those not available (-) for each model
of rotary blades vacuum pump.
FAN 420
FAN 5300
Table 4
Figure 8
O = Standard
X = Upon request
C
D
Pressure: the maximum permitted pressure is 2,5 absolute bar (1.5 relative
bar).
In order to avoid exceeding this value or to obtain a lower max pressure,
an over-pressure valve, "C", must be applied that is of a size capable of
discharging the excess air delivery. Working pressure 2 bar absolute (1 bar
relative).
Vacuum: too high a vacuum can cause ovality and undulation of the
body or breaking of the blades. It is therefore advisable to use a vacuum
regulator valve, "D". These valves may be fi tted on the manifold cover or
on manifold of the Rotary blades vacuum pump. Vacuum working degree
is of –0,80 bar.
VACUUM
ADJUSTMENT VALVE
1" 1/2
X
X
- = Not available
ATTENTION: The system must ALWAYS be equipped
with a vacuum regulating valve (calibrated at -0.80 bar)
and overpressure valve (calibrated at 1 bar).
Adjustment of the valves must be performed by the customer
at the testing phase.
The regulation of the valves is done by acting on the throttle
placed on the valve same (overpressure valve) or action on
nut and locknut (vacuum adjustment valve).
Figure 7
OVERPRESSURE
VALVE 2"
X
X
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