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Safety precautions
This symbol
"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
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.
1. GENERAL INFORMATION
The purpose of these explanations and recommendations is to facilitate the
correct installation of the pump, thus ensuring the best possible hydraulic and
electrical performance of the unit.
The pump is a high-performance low-noise vertical multi-stage IN-LINE unit,
comprising different stages arranged in series which provide constant flow
with head height vaying according to the number of impellers.
Designed to work with clean water at a maximum temperature of up to 35° C.
Stainless steel turbines, pump shaft, outer casing and base, Noryl diffusers,
cast-iron pump support and intermediate body... all these components have
undergone strict quality controls and inspection before assembly.
By strictly following the instructions for the installation and use of the pump
and our recommendations for electrical connection, you will avoid any prob-
lems that might otherwise occur, for which we can accept no responsability.
2. INSTALLATION
The pump should be installed in a dry, well-ventilated place, protected
from the rain or any risk of flooding or frost.
For adequate ventilation, and to facilitate any servicing that may be
necessary, the pump should be installed at least 0.5 metres away
from walls, roofs or other machinery (see fig. 1).
The pump should be anchored to a solid base of concrete, brick, etc.
through the holes in the pump mounting plate, avoiding any risk of unde-
sirable noise or vibration. (See general dimensions table).
The pump intake should be as near to the water level as possible.
We also recommend that both suction and discharge pipework be of
a larger diameter than the pump intake and discharge ports.
When connected with eccentric and concentric cones, as otherwise
head loss will be increased, with a considerable reduction in flow
(see fig. 2).
3. PIPEWORK ASSEMBLY
All pipework should be connected to the pump with standard connection
plates. (See general dimensions table).
NOTE: When connecting suction and discharge pipework, pump intake and
discharge ports, marked with arrows, must be taken into account. The arrow
at the foot of the pump indicates the direction of water flow.
Suction piping should slope gently upwards towards the pump, to facilitate
priming and bleeding (see fig. 3).
A foot valve should be installed, submerged to a depth of a least 50-75 cm, to
avoid whirlpools, with the consequent risk of air entering the system (see fig. 2).
Discharge pipework should be of a diameter equal to or greater than the
pump discharge. We recommend that a chek valve be installed to absorb
water hammer and avoid the need to drain the pump before dismantling.
Pipework should not be allowed to rest against pump casing.
together with one of the following words
4. ELECTRICAL CONNECTION
Electrical connection should be made in line with the low voltage
technical electrical regulations of each individual country.
Our pumps are supplied without any thermal protection and conse-
quently it is the filter who is responsible for installing a motor protec-
tion device, suited to the specific features of the motor in terms of
amperage, voltage and electrical security.
To ensure correct electrical connection, see the wiring diagram in the
motor connection boix (See fig. 4). The motor rotates in the direction
shown in figure 5.
NEVER START THE MOTOR BEFORE PRIMING.
5. PRIMING
Prior to starting the motor the pump body must be primed as follows:
FLOODED SUCTION INSTALLATIONS
If the pump is connected to a system with an incoming load, simply
open the upper bleed valve and the gate valve, wait for the water to
come out, and close the valve again (See fig. 6).
SUCTION LIFT INSTALLATIONS
For installations with suction, lift the top bleed screw and fill the pump
body with water until it comes out of the top bleed screw hole.
This can take some time. It must not be forgotten that here we are fill-
ing the entire suction pipe (see fig. 7).
It is very important for the pump to be primed slowly. If the operation is
performed too quickly, bubbles of air will enter the pump and could later
cause problems.
Start up the pump. Open the bleeder screw and then the discharge
gate very gradually. When there is a constant flow of water through the
bleeder screw, close this valve and open the discharge gate fully.
6. BEFORE STARTING THE PUMP
Ensure that the voltage and frequency are the same as those shown
on the motor spec. plate.
Check that all pipework and connecting flanges are watertigh and
that the pump has been properly primed.
Ensure that the motor turns freely.
Start the motor and verify the direction of rotation. Looking from
above (motor fan), it should turn in a clockwise direction. If the direc-
tion of rotation is wrong, switch over the two phases on the mains
cable (see fig. 5).
7. START-UP
Open all gates valves in the pump suction and discharge lines.
Turn on the start switch and check that the amperage drawn is the same as
that shown on the motor spec. plate. Adjust the thermal relay to the current
drawn.
If the motor does not run or the pump fails to draw water, check the trou-
bleshooting section to be found at the end of this manual.
8. MAINTENANCE
Our pumps are virtually maintenance free.
In colder seasons, when temperatures fall below 0°C, special care
must be taken in completely emptying the pump to avoid the risk of
damage. To empty the pump, open the drain screw located at its base
(fig. 8) and then the priming valve for the pump to take in air. Wait for it
to empty completely.
If the pump is not to be used for an extended period of time, we rec-
ommend that it be fully drained and stored with a dust cover 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 technical service.
When the time comes to dispose of the pump, it contains no toxic or
contaminating materials. The principal components are duly identi-
fied for selective breaking.
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