Espa SILVER Serie Manual De Instrucciones página 3

I N S T R U C T I O N M A N U A L
Safety precautions
This symbol
"Danger" or "Warning" indicates the risk level deriving from failure to observe
the prescribed safety precautions:
DANGER Warns that failure to observe the pre-
risk of cautions involves a risk of electric
electric shock shock.
DANGER Warns that failure to observe the pre-
cautions involves a risk of damage to
persons and/or things.
WARNING Warns that failure to observe the precau-
tions involves the risk of damaging the
pum and/or the plant.
1. GENERAL
The purpose of these instructions is to ensure the correct installation
and best performance of our pumps.
These are single cell centrifugal pumps with built-in filter elements,
especially designed for prefiltering and recirculation of water in swim-
ming pools.
They are designed to operate with clean water at a maximum tempera-
ture of 35°C.
All materials used are of top quality; they are subjected to strict, controls
and verified to extremely demanding standards.
Correct compliance with the installation and operation instructions, and
with the electrical connection diagrams, will prevent motor overloads
and the consequences of all types that could otherwise result, conse-
quences for which we decline all responsability.
2. INSTALLATION
The installation of our electric pumps is only permitted in
swimming pools or ponds that meet HD 384-7-702 part CEI
60534-7-702. In case of doubt, inquire with an expert.
The pump should be installed as near as possible to water level,
in horizontal position, in order to obtain a minimum suction path
and reduce head losses.
It is not advisable to install the pump at more than 3 m geome-
trical height from water level.
Independently of the geometrical height and the power of the
model chosen, self-priming times may be up to 10 min.
The pump should be protected from possible flooding and recei-
ve dry ventilation.
3. INSTALLING THE LINES
The supports of the suction and discharge lines will be independent of
those of the pump.
In the case of plastic lines, ensure tightness.
The suction line should have a diameter equal to or greater than that of
the suction mouth of the pump.
The inside of the suction and discharge holes is threaded to a certain
depth. This depth should not be exceeded when screwing on the res-
pective lines. Only new or clean connectors should be used.
together with one of the following words
The suction lines should be structured with a slight slant to prevent the
formation of siphons.
4. ELECTRICAL CONNECTION
The electrical installation should have a multiple separation
system with contact opening of a least 3 mm.
The protection of the system will be based on a differential
switch (I fn = 30 mA). If outdoor operation is foreseen, the power
supply cord should meet EEC standards (2) or be of type
H07 RN-F as per VDE 0250.
Single-phase motors will be equipped with built-in thermal
protection. In the case of three-phase motors, the user should
provide thermal protection complying with the installation
rules in force.
The diagrams in Fig. (1) will allow correct electrical connection.
5. VERIFICATIONS PRIOR TO INITIAL START-UP
After making the connections defined in the preceeding sec-
tion, unscrew the filter cover and fill the pump prefilter with
water to the bottom level of the suction line.
Verify that the pump shaft turns freely.
Verify that the mains voltage and frequency match those
specified on the nameplate of the pump.
Set the prefilter cover back in place and screw it to a suitable
tightness.
Check that the turning direction of the motor matches that
specified on the fan cover. In threephase motors, if the turning
direction is incorrect, reverse two supply phases on the protec-
tion panel.
If the motor does not start, try to determine the cause of the
irregularity by consulting the list of common faults and their
possible solutions, provided in this manual.
NEVER RUN THE PUMP DRY.
6. STARTING
Open all the gate valves and put the motor under voltage. Wait a rea-
sonable time to allow self-priming.
7. MAINTENANCE
Our pumps do not require any specific maintenance. It is advi-
sable, however, to periodically clean the pump filter and to
empty the pump housing in low-temperature periods through
the blowoff plug. If the pump is to remain idle, it is advisable to
empty and clean it, and then reinstall the filter cover with petro-
leum jelly on the rubber gasket, taking measures to ensure that
the place where the pump is to be stored will remain dry and
ventilated.
In the event of breakdown, the user must in no event handle the
pump, but must contact an authorised technical service.
When the time comes to dispose of the pump, it contains no
toxic or contaminating materials. The principal components are
duly identified for selective breaking.
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