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Bomba NIAGARA:Bomba NIAGARA.qxd 27/01/2010 18:01 Página 15
7. MAINTENANCE/CONSERVATION
Before
touching,
electricity supply.
7.1.
ATTENTION
If the pump is switched off for long
periods of time, should there be a
danger of frost, the pump casing (7)
should be emptied, by loosening the
emptying outlet (10) along with its
O-ring seal (8).
Before starting the pump, replace the
outlet (10) and its O-ring seal (8).
Fill the pump chamber with water and
check with a screwdriver that the motor
is not jammed. If the shaft has seized up,
call a qualified technician.
In the event of the motor flooding, do
not try to start it; call an electrician to
dismount the motor in order to dry it.
8. DISMOUNTING
8.1.
ATTENTION
Before performing any operation, all
valves must be in the "off" position;
having checked this:
- Disconnect the general electricity
switch and the differential switch (this
must be done by an authorised specialist).
- Loosen and remove the supply cables
on the bushings box (40) (fig. 5, page
42).
disconnect
the
- Release the aspiration and return
sleeves.
- Empty the pump.
8.2.
In order to dismount and assemble the
electropump, please see the detail
drawing.
In order to remove the motor from the
hydraulic casing, remove the four
screws (21) and lever with two
screwdrivers, one opposite the other.
In order to dismount the impeller (16),
separate the diffuser (14) and its
junction (13), loosen the ventilator
cover (35) and remove the ventilator;
block the motor shaft with the aid of a
clamp, while rotating the impeller (16)
anticlockwise with a number 14 pipe
wrench, thus releasing the shaft (14).
The mobile part of the retainer (17)
comes out with the header.
"All parts to be assembled must be
15
ATTENTION
9. ASSEMBLY
ATTENTION
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