Franklin Electric VSI Series Use And Installation Instruction Manual page 13

Use and installation instruction manual
6 MECHANICAL INSTALLATION
Remove the machine from the packaging and check its integrity. Also check that
the plate data correspond to the desired ones. For any anomaly, contact the
supplier immediately, reporting the nature of the defects.
Check the maximum diameter
the pump with motor
Check that the pit does not present any restrictions or obstacles to the descent
of the machine.
6.1 Machine handling
To lift the machine, use only suitable, properly marked devices in good working
condition. Do not exceed the load capacity of the least resistant device among all
those used (lifting lug, shackle, hook, carabiner, chain, rope, hoist or other). Only
use hooks with safety latch. Use adjustable lifting lugs or check their maximum
load capacity for non-axial loads.
Check the weight of the whole system (pump, motor, full pipe, etc.)
before starting the lifting operations.
During lifting, the machine will tend to rotate around the lifting point until
it reaches a balanced position. Handle with care. Pay attention to the
inertia of the object (oscillations in the direction of travel, difficulty in
slowing down and stopping).
Pay attention to suspended loads. Do not stand under them. Pay attention to
people, animals and objects in the work area. Use appropriate work area marking
tools and delimiters, where necessary. Do not operate the pump or let it pass
over people.
Do not subject the machine to bending when it is no longer packed: this could
cause misalignment and damage to the pump itself.
The unapplied plate that is supplied with the machine must be fixed near the
electrical control equipment. The machine must not be exposed to unnecessary
bumps and collisions.
Lift and carry the pump by gripping it as shown in Fig. 7, using the "choke" straps.
Under no circumstances must the handling and lifting of the machine take place
via the motor power cable. During all phases of transport, be careful not to
damage the cables.
6.2 Motor installation
Check that the mating surfaces and centerings of the motor shaft and pump
coupling are not damaged. In case of dirt, clean thoroughly and, if necessary,
lubricate with grease.
Position the pump on the motor so that they are on the same axis and insert the
motor shaft into the pump shaft joint without the coupling being forced. Tighten
the screws or nuts that fix the pump-motor flanges diagonally with a tightening
torque as indicated in the table below.
The bolts shall be secured in such a way that they cannot come loose.
During all installation phases, be careful not to damage the cables.
Check that the contact surfaces between pump and motor are properly coupled.
Check the correct coupling between the motor shaft and the pump joint, checking
that the joint is not resting on the thrust ring, but that there is a gap of about 2.5
mm.
Check that the shaft rotates smoothly and freely.
Once the pump/motor coupling phase has been completed, fit the
suction filters and the cable covers.
The power indicated on the rating plate and in the tables refers to use with clean
water. For denser or more viscous liquids, consult the Manufacturer.
6.3 Cables
Inspect, along the entire length of the power cables, that they are not damaged
at any point and check the insulation value of the winding. For more information,
see the engine manual.
The ends of the power cables must be protected from dirt and moisture.
To fix the cable on the support rope or on the delivery pipe, you need to use
clamps to be positioned every 3 metres. Use plastic ties as shown in Fig. 9. Once
the cable has been secured, cut the protrusion of the tie.
of the pump and
in the technical catalogue.
If the pipe is made of plastic, the electric cable and the support rope must be left
unstretched in order to prevent the extension of the pipe, due to the weight of the
water contained in it, from tearing the electric cable.
With flanged pipes the clamps must be applied before and after the flanges.
of
6.4 Positioning
The machine is suitable for both vertical and horizontal installation, never tilted
downwards (Fig. 10).
Note: The suction holder must always be submerged during operation.
Under special conditions it may be necessary to submerge it more deeply
depending on the duty point, temperatures and NPSH of the pump.
If the machine is not used in a vertical position, it is necessary to support both the
pump part and the motor. Note that the center of gravity will vary based on the
type of machine.
Lowering of the pump
It is recommended to check that the well is not blocked along its entire length.
Lower the machine into the well without damaging the electric cable.
Note: Do not use the electric cable to lower the machine.
Installation depth
The dynamic level in the well must guarantee coverage of the pump suction
support, as illustrated in paragraph 3.3 and in Fig. 5.
Lb: Static water level
Lc: Dynamic water level
Ld: Difference between static and dynamic level
Lt: Installation depth
H min: Minimum height
Block the delivery pipe with special brackets on the well head. Loosen the support
rope and secure it to the foundation.
7 COMMISSIONING
Only authorized personnel who have been correctly trained on local
safety standards and on the contents of this installation, use and
maintenance manual can put the system into operation.
There may be splashes of liquid which are dangerous for people or things.
Never operate the machine without the guards correctly installed.
7.1 Starting the machine
Before starting, check that:
• The machine is correctly connected to the power supply, the motor protectors
are calibrated and the correct insulation value of the cables (to exclude damage
during installation).
• The machine is correctly immersed at a minimum level in water (to exclude
dry running).
• The delivery valve is not completely open (to exclude operation with a flow
rate beyond the working range).
7.2 Checking the direction of rotation
When the pump has been connected to the power supply, establish the current
direction of rotation as follows:
• Start the machine and check the prevalence supplied with the gate valve not
completely closed.
• Stop the machine and interchange the connections of two phases.
• Start the machine and repeat the first step with the gate valve in the same
position.
• Stop the machine and compare the results obtained: the correct connection is
the one that gives the maximum head.
Once installed and submerged, the machine can be started with the shutter
closed by one third.
If there are impurities in the water, it will be necessary to gradually open the gate
valve until the water begins to clear. The machine must not be stopped before the
water has returned completely clean, because otherwise the various parts of the
pump and the non-return valve could be damaged.
If the flow rate of the pump is greater than that of the well, we recommend the
use of equipment which protects against dry running.
In the absence of any dry-running protection, the water level will drop below the
suction support and the pump will suck in air, causing damage due to insufficient
cooling and lubrication.
ENGLISH
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