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5 OPERATION
5.1 Preliminary controls
If the blower has been in storage for more than 6 months, check its state of preservation.
Check the alignment of the transmission and eventually the belt tension .
Check that the blower rotate freely by hand.
Check that the safety protection devices have been correctly installed and secured.
Check that the pipes have been internally cleaned and if eventually obstructions have been removed.
Check that all connections between pipes and blower are tightened and sealed.
Fill the blower with oil as described in paragraph 6.1
5.2 First start up
Warning : The personnel must wear the noise protection devices.
Open the shut-off valves on the piping.
Check that the relief valve has been set at the operating value.
Check the rotation direction using a short current pulse.
Warning : Do not rotate the blower in the wrong direction for more than a few revolution.
Open the valve of the cooling circuit (only for /RV)
Start the blower.
Increase the operating pressure gradually until the rated value is reached.
During the first 8 hours of operation check that there are no oil leakage, no cooling liquid leakage (only /RV)
and strange noises or vibrations, if such problems are found stop the blower immediately and contact our PV
service.
5.3 Operation
Start the blower and check what enlisted in the table below.
CHECK
PARAMETER
FREQUENCY
NOTE
h
G
S
M
VISUAL
Pressure
1
Blower in
operation
Temperature
1
Absorbed power
1
Cooling liquid flow
1
Noise
1
LUBRIFICATION
Oil level
500
Blower out of
operation
Oil Leakage
1
Viscosity
500
Oil change
4000
6
FILTER
Vacuum
1
< 35 mbar
Clogging
2
TRANSMISSION
Wear
2000
Blower out of
operation
Belt tension
2000
Belt change
15000
24
h operation hours
G days
Note : in case of double indication follow the most limiting one for the
application
S weeks
M months
5.4 Stopping the blower
Remove, if possible, the differential pressure.
Note : The blower can also be stopped in the presence of the counter-pressure, but, because
the high current absorption of the motor, problems with the electric circuit may occur.
Stop electric supply and close the cooling water circuit (only for /RV)
Warning : Check that the deceleration of the blower is even and without vibrations.
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