caprari HV Serie Instrucciones De Servicio página 13

Store the pump in a dry place, sheletered from the weather.
Avoid instability which could be caused by wrongly positioning the electric pump or some other part of the system.
For size 65-80 models, turn the rotating parts at regular intervals to prevent them from jamming (consult paragraph 5.1 "Preliminary inspections" for
the relative procedure).
For safe storage after a previous installation, the pump must be thoroughly cleaned (never ever use hydrocarbon based products for
ATTENTION
this purpose).
The hydraulic part must be dried inside with a jet of forced air.
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 anges 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.
Check that the electric motor is never exposed to weather conditions able to cause damage (check environmental compatibility with
ATTENTION
the protection degree on the data plate of the electric motor).
Dispose of the packing material as established by the local laws in force. Do not litter.
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
ATTENTION
assembled, by means of the pump shaft and drive shaft end, taking care not to damage these parts.
If the electric pump is jammed, ll it with water and attempt to turn the coupling by hand after a few minutes, using an appropriate
tool to facilitate the operation.
Check that:
- the suction pressure of the pump is able to meet the required NPSH conditions (consult the speci c technical documentation);
- when pumping from accumulation tanks, check that the minimum dynamic level of the water is suf cient 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 ow 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 "Start-up").
Also check that:
- if the pump is installed in a closed room, that ventilation is suf ciently 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.
The pipes must be supported near the pump casing since this latter must never act as a bearing point. Forces (F) and moments
ATTENTION
(M) transmitted by the pipes owing, for example, to heat expansion, actual weight of the pipes themselves, misalignment, lack of
expansion joints, may act on the suction and delivery openings at the same time but must never exceed the maximum permissible
values listed in the "Flange stress" chart, chapter 11 "Technical data, dimensions and weights".
Proceed in the following way if the pump-motor unit must be assembled:
1) thoroughly clean the coupling surfaces;
2) if the electric motor shaft has oat, set it in the "fully out" position;
3) separate the two half-couplings;
4) engage the tang and t the half-coupling on the motor side on to the relative shaft;
5) complying with the clamping torque values in the "Positioning the half-coupling on the motor side" drawing, chapter 11 "Technical data,
dimensions and weights", lock this part axially;
6) push the pump shaft fully towards the intake in an axial direction, lifting the motor by the relative gripping points with which it must be equipped.
Now ange it to the pump;
check that the coupling guard is in the right position and check that the unit is stable and cannot become a safety hazard;
7) if there is an axial distance of 2÷2.5 mm between the two half-couplings, couple them with the supplied screws.
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