Inhaltsverzeichnis
Werbung
I N S T R U C T I O N M A N U A L
Safety precautions
This symbol
words "Danger" or "Warning" indicates the risk level deriving from
failure to observe the prescribed safety precautions:
DANGER
Warns that failure to observe the precautions
Risk of
involves a risk of electric shock.
electric shock
DANGER
Warns that failure to observe the precautions
involves a risk of damage to persons and/or
things.
WARNING
Warns that failure to observe the precautions
involves the risk of damaging the pump
and/or the plant.
. GENERAL INFORMATION
1
The purpose of these instructions is to ensure correct installa-
tion, and highest possible yield from the motor-driven pump.
Please read the following instructions carefully.
Our pumps are monocellular centrifugal horizontal units con-
structed in rustproof material and designed to yield high flows
at low pressures working with clean water at a maximum tem-
perature of 35°C.
All of our units are constructed with the finest materials and are
subjected to the most rigorous hydraulic and electrical con-
trols, painstakingly verified.
By strictly following the instructions for the installation and use
of the pump paying careful attention to the wiring diagrams you
shall avoid the possibility of overloading the motor or of any
other problems that might otherwise arise from misuse, for
which we can accept no responsibility.
2. INSTALLATION
The pump should be attached to a solid base, bolting it
through the bolt holes in the mounting, thus eliminating
the possibility of any unnecessary noise or vibration.
The pump should be fitted as near as possible to the
water level to make the suction head as low as possible.
The pump should be fitted where it will remain safe from
flooding and should be ventilated with dry air.
3. MOUNTING THE PIPEWORK
The diameter of the suction pipe should be equal to or greater
than the pump intake and should be set at a gentle slope of a
least 2% to facilitate adequate purging.
The foot valve must remain at least 30 cm below the water line,
thus avoiding whirlpools and the risk of air entering the system.
The discharge pipe should be of a diameter equal to or greater
than that of the pump discharge.
As the pipe used is of a larger diameter, we shall use the cor-
responding eccentric cones on the aspiration side and con-
centric cones on the discharge side.
Neither suction nor discharge piping should rest against the
pump.
together with one of the following
4. ELECTRICAL CONNECTION
The electrical installation should have a multiple separa-
tion system with contact opening of a least 3 mm.
The protection of the system will be based on a differ-
ential switch (I fn = 30 mA). The power-supply cable
must comply with the requirements of the pertinent reg-
ulations in force in each country. The connections of the
power-supply cable to the pump motor must be made
with the corresponding terminals. In outdoor installa-
tions, the power-supply cable must be at least of type
"H07 RN-F".
Single-phase motors will be equipped with built-in ther-
mal protection. In the case of three-phase motors, the
user should provide thermal protection complying with
the installation rules in force.
The diagrams in Fig. (1) will allow correct electrical con-
nection.
5. BEFORE FIRST STARTING THE PUMP ENSURE
That the grid voltage and frequency match those fea-
tured on the specification plate and that the pump shaft
turns freely.
That the motor turns in the same direction as indicated
by the arrow on the fan cover. With three phase motors,
if the direction is wrong, switch two of the phases on the
protection board.
That the pump body and suction pipe are completely full
of water and that there are no leaks at the joints or con-
nectors.
THE PUMP SHOULD NEVER BE OPERATED DRY.
6. START-UP
Open all gate valves in the suction and discharge lines and
turn on power.
Check the current drawn and duly adjust the thermal relay
(three phase versions only).
If the motor does not work or the pump not draw water, try to
discover the cause of the problem consulting the troubleshoot-
ing guide shown below.
7. MAINTENANCE
Our pumps require no specific maintenance or pro-
gramming. Notwithstanding, we recommend that in cold
weather, when there is risk of freezing, the pump body
be completely drained by removing the drain plug. If the
pump is to remain unused for a long period of time, it
should be drained, cleaned and stored in a dry, well-
ventilated place.
In the event of breakdown, the user must in no event
handle the pump, but must contact an authorised tech-
nical service.
When the time comes to dispose of the pump, it contains
no toxic or contaminating materials. The principal com-
ponents are duly identified for selectiv
3
GB
e breaking.
Werbung
Inhaltsverzeichnis
