caprari K+ Serie Manual De Uso Y Mantenimiento página 27

15.3. DRY CHAMBER INSTALLATION
Electric pumps with cooling oil can be used in dry installations with both openings (suction/delivery)
flanged to the pipe. This type of installation allows the unit to be mounted in a dry place even without
ventilation. In such cases, it is advisable to mount a sluice valve in both the supply and delivery pipes in
order to work on the electric pump without fluid escaping.
The main installation envisaged is with the electric pump arranged with a vertical rotor axis on a
dedicated support foot and a flanged bend at the suction point (fig.4).
When the pump is used in dry installations, it is advisable to include an alarm device to warn of flooding
in the chamber caused by breakage or leaks from the electric pump itself or from one of the wet
components in the system. If such faults should occur, the machine is not a source of danger and will not
be damaged.
The pipes must be supported near the electric pump since this latter must never be used as an
anchoring point.
The forces (F) and moments (M) transmitted by the pipes can act on the suction and discharge
parts at the same time, but must never ever exceed the maximum values given in the following
table. Axes x, y and z represent the directions of stress in relation to the carthesian system
applied to the electric pump flanges.
ø
Fx [N]; Fy [N]; Fz [N]
DN 100
1000
DN 150 1500
DN 200
2000
DN 250
16. TRANSPORT AND STORAGE
The electric pump is very heavy. It must be handled by the indicated points using suitable
and approved tools.
ATTENTION During transportation and storage, the electric pump must always be kept on the bearing frame or
on the pump casing in a vertical position and with the cable wound around the motor casing. This
is the most stable position and protects the cable against possible contacts or rubbing. Always
check that the machine is stable in order to prevent it from rolling or dropping as this could damage
persons, property or the electric pump itself.
Never lift the electric pump by the powering cables. Use the handle provided on the cover of
the motor casing.
ATTENTION When the electric pump has been stored, it must be kept in a dry place at a temperature of less than
60°C prior to being used for the first time.
ATTENTION When the electric pump is stored after a period of use, it must be thoroughly cleaned with water and
disinfected if necessary, dried and kept in a dry place at a temperature of less than 60°C.
Before using the electric pump again, make sure that the rotor is free to turn before
making the electrical connections, that the motor's electrical insulation is undamaged and
that the oil is at the right level.
If the electric pump is stored for a long period of time, turn the rotor every so often to prevent its
seals and shims from jamming (channel impellers).
If the pump is blocked by ice, immerse it in water until it has completely thawed. Do not
opt for other, faster methods as the machine could be damaged. Make sure that the
pump is in a perfect condition and conduct the inspections described above before use.
17. PRELIMINARY INSPECTIONS
ATTENTION The electric pump may only be installed after a few simple inspections have been performed:
1. The electric pump is supplied ready for use with the correct quantity of oil in the "oil chamber". After a
long period of inactivity, check that the oil is present in the correct quantity in the "oil chamber". (see
specific paragraph "OIL CHANGE").
2. Check that the rotor is free to turn by working on the impeller through the suction mouth.
3. Connect the powering cables to the Control Panel (see paragraph 19).
The terminals of the power cable are marked with international IEC codes.
connection to the line L1 (u1-w2), L2 (v1-u2), L3 (w1-v2) determines the correct direction of rotation
of the electric pump. If the installed group is visible during start-up, it will suffer a kickback in the
anti-clockwise direction (see Fig. 5).
To reverse the direction of rotation, swap two phases with each other.
Caprari S.p.A.
K.M150N.. / K.M100N.. / K.W100N.. / K.D200N.. / K.M200P.. / K.D250P..
ΣF [N] Mx [Nm]; My [Nm]; Mz [Nm]
1750 500
2500 750
3500 1000
ΣM [Nm]
750
1250
1750
Fig. 5
GB
DIRECTION OF
ROTATION
REACTION
DIRECTION
(kickback)
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