Assembly And Installation; Preliminary Inspections; Mechanical Connections; Hydraulic Connections - caprari HVX Série Notice D'utilisation Et D'entretien

The product must be handled with care. Use suitable lifting means and harness for this purpose, in compliance with the safety
provisions in force.
pump = use the duct flanges and that of the electric motor as coupling points;
electric motor = use the coupling point with which it must be equipped.
Consult the instructions in the chapter 11 "Technical data, dimensions and weights". for the weight of each individual part.
ATTENTION Check that the electric motor is never exposed to weather conditions able to cause damage (check environmental compatibility
with the protection degree on the data plate of the electric motor).
5

ASSEMBLY AND INSTALLATION

Dispose of the packing material as established by the local laws in force. Do not litter.
5.1

Preliminary inspections

ATTENTION Always check that the electric pump is free to turn. This is done by means of the connection coupling or, if the unit is not yet
assembled, by means of the pump shaft and drive shaft end, taking care not to damage these parts.
5.2 Plant features
Check that:
- the suction pressure of the pump inlet is able to meet the required NPSH conditions (consult the specific technical documentation);
- when pumping from accumulation tanks, check that the minimum dynamic level of the water is sufficient to prevent air from being drawn up as
this could create a vortex (indicative minimum submersion level 0.5 m).
Check that the delivery duct is equipped with:
- a quick closing check valve to protect the pump from water hammers;
- an on-off sluice valve to regulate the operating flow rate;
- a pressure gauge.
Check that the intake pipe:
- does not allow the formation of air pockets;
- is equipped with a foot valve if the pump is installed above head. This will allow for priming (consult chapter 6.1 "Starting").
Also check that:
- if the pump is installed in a closed room, that ventilation is sufficiently able to prevent an increase in the temperature of the air;
- the unit can be easily inspected and that the electric motor can be demounted;
- if the noise level of the system must be lowered, that the pump is connected to the pipe by means of vibration absorbing compensators;
- the pump and pipe are protected against freezing when they are subjected to low temperatures.
ATTENTION The pipes must be supported near the pump casing since this latter must never act as a bearing point. Forces (F) and moments
(M) transmitted by the pipes owing, for example, to heat expansion, actual weight of the pipes themselves, misalignment, lack of
expansion joints, may not act on the suction and delivery openings.
5.3

Mechanical connections

Pump-electric motor assembly
Proceed in the following way if the pump-motor unit must be assembled:
1) set the pump in a vertical position;
2) thoroughly clean the coupling surfaces and remove the protective netting;
3) loosen the screws that fix the two half-couplings;
4) insert the supplied fork spacer between the coupling and the mechanical seal flange so that the pump shaft is raised;
5) lift the motor by its grips and flange it to the pump;
6) fully tighten the fixing screws of the two half-couplings;
7) remove the spacer and refit the protective netting.
Installing the electric pump on a base
The electric pump must be rigidly fixed to a strong and stable bearing surface by means of the already made fixing holes.
Use shims to recover any misalignment between the fixing points and bearing surface in order to prevent bending stress from being transmitted
to the pump casing.
5.4

Hydraulic connections

Connection to the suction and delivery mouth is made by means of a gas threaded counter-flange (consult chapter 11 "Technical data,
dimensions and weights").
Caprari S.p.A.
HVX - HVXS
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