Installation - DAB SMC6 Instrucciones Para La Instalación Y El Mantenimiento

- screw diagonally securing screw, possibly by dynamometric spanner (Fig. 4, page 1), at the following values:
-
adjust electric cables outside the pump and cover them by the suitable cable guard. (Fig. 5, page 1).
Should the assembled group exceeds lenghts "L" indicated on the table no.1, for positioning it horizontally or lifting it again
vertically, make use of an auxiliary support for preventing possible damages which might be caused by bending stress.
(Fig. 6, page 1).
Table 1

6. INSTALLATION

FIGURE 7
Motor
4"
6"
8"
10"
12"
Ø group
6"
8"
10"-12"-14"
For what concerns pump handling at the installation site, please refer to section.4.2. Clean the well from sand or grit
by applying the normal cleaning procedures. Place the pumping unit at the top of the well, fasten it to the hoist hook
and fill the motor as follows:
a) Place the motor in vertical position.
b) Remove filling plug (A) and replace it with the nipple equipped with pipe and funnel delivered with the motor.
c) Remove vent plug (B) to bleed the air possibly trapped in the motor.
d)Holding the funnel higher than the vent valve, pour clear water in the motor until the mixture already in starts
dropping from the vent valve.
e) Stop pouring water in the motor, screw valve (B) plug back in place, remove the nipple and screw valve (A) plug
back in place.
The group should never run without being filled, since pump bearings are lubricated by the pumped fluid.
Dry running should be absolutely avoided even for a very short period, since it might heavily damage the pump. Also,
the pump should not rest on the well bottom as the motor would run in a high sand-concentration environment with
a dangerous reduction of its cooling capacity and probable windings burn-out. Check cable connection to the control
panel terminals. Check also the calibration of thermal protection relays, which should be set according to rated break
power. Disconnect the group from main electric supply before lowering it in the well.
Fasten accurately the cable far end as the cable might fall in the well. Lower then the electric pump into the well with
the help of two supporting brackets placed alternately on the pump column pipe.
Proceed in the following way:
a) Connect the first column section to the pump delivery nozzle after having placed a splitted supporting bracket at
the opposite end of the pipe. In case of threaded column pipes, place by the upper end the suited threaded sleeve
to avoid possible sliding between pipe and bracket.
b) Move the assembly with a hoist and lower it till the bracket will rest on the well opening.
c) Fasten every 2 or 3 meters the electric supply cables to the pump column by means of suited bands. We recomend
a firm fastening, since slacken cables will tend to slide down along the pipe due to their own weight, creating loose,
bending sections which could violently rub against the well internal walls at pump startup and stopping.
d) Connect the second column pipe, that too coupled to a supporting bracket at its top.
e) Keep the assembly lifted and remove the first supporting bracket, then lower the unit as described at point (b).
f) Repeat this operation till reaching the desired depth. The unit should be submersed for at least f or 2 meters below
the water dynamic level, such however to fulfil its NPSH requirements. The water level, for seasonal drop or for an
excessive pump delivery compared to well feeding, should never be lower than the pump suction chamber, as that
could cause driving bushes seizing and motor overheating. Check the length of the column pipe while lowering the
unit, to make sure the unit is installed at the right depth. Definitive fastening is performed by welding and bolting the
last pipe flange to the well opening. In case of threaded pipes, these have to be completely tightened and possibly
locked since the group reaction torque at startup could make them loose.
ENGLISH
Driving torque
18Nm
60 Nm
140 Nm
200 Nm
140 Nm
Max "L" Lenght
3,3 m
3,5 m
4,0 m
19