Routine Maintenance - Calpeda MPC Serie Instrucciones De Uso

During maintenance keep particular attention in
i
order to avoid the introduction of small external
parts, that could compromise the device safety.
It is forbidden to execute any operations with
the direct use of hands. Use water-resistant,
anti-cut gloves to disassemble and clean the
filter or in other particular cases.
During maintenance
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personnel is not allowed.
Maintenance operations that are not described in
this manual must be made only by special personnel
authorized by Calpeda S.p.A.
For further technical information regarding the use or
the maintenance of the device, contact Calpeda S.p.A.

8.1. Routine maintenance

OFF
The motors with supply current directly switched
by thermally sensitive
automatically.
Disconnect electrical power before any
servicing operation and make sure the
pump cannot be accidentally switched on.
Inspect and clean the strainer basket periodically.
The frequency of cleaning depends on operation time
of the pump, pool environment, wind (for open air
swimming pools) and the number and behaviour of the
bathers.
With the pump located below water level, close the
suction and delivery gate valves before removing the
cover.
The strainer can be easily accessed by removing the
strainer cover (fig. 3).
Fig. 3 Removing and cleaning the strainer
ATTENTION: do not use oil to lubricate the O-ring
seal. Use only water and neutral soap to clean the
transparent strainer cover. Do not use solvents.
After cleaning, put the strainer basket in its proper
position. Fill with water up to suction port level (see
section 7.2.2.).
Position the strainer cover properly with the O-ring seal
on the casing and tighten the handwheels uniformly.
Disinfectant or chemical products for water
treatment must not be poured directly into
the pump.
Risk of reactions and emission of harmful fumes. Risk
of corrosion in stagnant water conditions (also with an
MPC Rev19 - Operating Instructions
operations external
switches can start
increase in temperature and decrease of pH value).
If the event of prolonged standstill periods or
if freezing may be expected, drain the pump
completely by removing the two thumbscrew drain
plugs with reusable O-ring gaskets (fig. 4).
Air inlet
Fig. 4 Draining
Tighten drain plugs by hand. Do not use pliers or
other tools.
If necessary, use pliers only to unscrew. Excessive
torque may cause damage.
ATTENTION: after a long idle period, before
restarting the unit, fill the pump casing with water
and check with a screwdriver that the shaft is not
jammed.
If the shaft is jammed, dismantle the motor and remove
the cause.
8.2. Dismantling the system
Close the suction and delivery gate valves and drain
the pump casing before dismantling the pump.
8.3. Dismantling the pump
OFF
Drain the pump casing before dismantling (see fig.
4 and section 12.). For dismantling and reassembly
see construction in the cross-section drawing (section
15.).
Remove the motor assembly with the lantern bracket
(32.00) from the pump casing (14.00), after removing
the screws (14.24), the nuts (14.28) and the washers
(14.29), levering them out with two screwdrivers in
diametrically opposed positions.
To remove the impeller (28.00) insert a large straight-
blade screwdriver in the slot on the shaft (78.00) at the
ventilation end.
Grip the impeller with one hand and unscrew it, turning
the shaft counter-clockwise and twisting with both
hands (fig. 5a).
Fig. 5 Dismantling (a) and remounting (b) the impeller
EN
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