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SECTION II
CONNECTION TO THE ELECTRIC SUPPLY
CAUTION
It is recommended to connect the pump to the
power supply through a dedicated safety switch on
the main electrical panel of the installation, or in
proximity of the power supply connection point.
CONNECTIONS TO THE INLET AND EXHAUST
FLANGES
Remove the protective caps from both flanges.
Connect the system to be evacuated to the inlet
flange, using a centering ring with OR and a lock-
ing collar.
NOTE
For guaranteed reliable sealing, use an OR gasket
in Perbunan or Viton.
The inlet duct is equipped with a sieve filter pre-
venting solid particles from entering and damaging
the pump.
NOTE
When the gases to be pumped out contain dust, it
is advisable to insert a dust filter before the inlet
flange.
NOTE
When the gases to be pumped out contain large
quantities of vapor, it is advisable to include a con-
dense separator before the inlet flange.
To make best use of the pump's capacity, use only
short, straight piping, with a diameter not smaller
than that of the inlet flange.
NOTE
If rigid piping is used, it is good practice to use a
flexible joint in order to avoid undue forcing of the
connection on the pump.
The exhaust duct must be connected to a pipe that
will take away the pumped out gases.
NOTE
An internal oil mist eliminator avoids pollution of
the surrounding atmosphere by the oil present in
the exhaust duct during pump operation.
CAUTION
Never block the pump exhaust line. This would
cause overpressure in the casing with the risk of
breaking the oil tank.
STARTING AND RUNNING THE PUMP
The pump is designed for operation with neutral or
non-corrosive fluids. It is absolutely forbidden to
use potentially explosive or flammable substances.
If the pump is started with cold oil, initially more
than normal noise will be heard; this will last for a
few minutes only until the oil reaches its working
temperature.
There are no special instructions for normal opera-
tion of the pump, which is delivered to you after
completion of a running-in cycle in the factory.
To allow the pump starting you have to wire prop-
erly the interlock pins by connecting the mating
connector provided with the pump.
For repetitive work cycles, with brief time intervals
in between, it is better not to stop the pump.
STOPPING THE PUMP
There are no special procedures for switching the
pump off; it needs only to be disconnected from
the electric power by means of the bipolar switch.
When the pump is stopped, the anti-suckback de-
vice makes it possible to maintain vacuum in the
vessel connected on the inlet flange of the pump.
SAFETY RULES
Personnel responsible for pump operation and
maintenance must be well-trained and must be
aware of the accident prevention rules.
The accident prevention precautions contained in
this section must be respected at all times during
operation and maintenance of the pump to avoid
damage to operators and to the pump.
These precautions are provided in the form of
WARNING and CAUTION notes.
Operating procedures, technical information and
precautions which, if not respected and/or imple-
mented correctly may cause body harm to opera-
tors.
13/22
TECHNICAL INFORMATION
WARNING!
NOTE
NOTE
NOTE
WARNING!
87-901-008-01(A)
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