Installation; Fixing; Suction Pipe Assembly; Discharge Pipe Assembly - Espa NADORSELF 300 Manual De Instrucciones

3. INSTALLATION

The installation of these electric pumps is only
permitted in swimming pools or ponds that comply
with standards IEC 60364-7-702 and/or the national
regulations of the country in which the product is to
be installed.

3.1. Fixing

The pump should be installed on a solid, horizontal
base, secured by screws or bolts and using the
existing holes in the mount.
The pump should be protected from possible
flooding and receive dry ventilation.
For correct pump ventilation, leave a space of at
least 10 cm between the ventilator cover and any
other element that might obstruct air circulation.

3.2. Suction pipe assembly

The suction pipe must be of the same or greater
diameter than the pump inlet and installed in an
upward inclination to prevent trapped air pockets
forming.
If the pump is required to perform a suction lift, to
avoid unnecessary losses of head on the discharge
side, the pump should be installed as close as
possible to the water. It is not advisable to install
the pump at more than 3m geometrical height from
the water level.
The non-return valve must be fitted correctly in the
suction inlet. The latter must be positioned with the
suction connector pivot and ALWAYS oriented with
the larger metal ring against the suction inlet of the
pump body (Fig.3).

3.3. Discharge pipe assembly

It is recommended to use pipes with a diameter
equal or greater than the pump outlet. This will
reduce loss of head caused by friction in longer
pipe runs.
For tubes made of plastic materials the threaded
joints must be made watertight using only
"TEFLON" tape. No adhesives or similar products
should be used.
For interior screw threads, when screwing in the
respective tubes never exceed the length of the
interior screw threads.
connectors should be used.
Pipework must be supported and their weight must
not rest on the pump.
Only new or clean

3.4. Electrical connection

The electrical installation must have a multi-
pole isolator with minimum 3 mm contact
openings,
The protection of the system will be based on
a differential switch (Δfn = 30mA).
The power cable must correspond at least to the
type H07 RN-F (according to 60245 IEC 66) and
having terminals.
The connection and its dimensioning must be per-
formed by a qualified installer according to the
needs of the facility and following the regulations in
force in each country.
Single-phase motors have thermal protection
incorporated.
All of three phase motor pumps do not
incorporate this protection. They must be
connected to
breaker that can be adjusted manually. Set
the circuit breaker according to the current
given in the rating plate plus 10%.
Follow instructions given on fig.1 for correct
electrical connection.

3.5. Pre-start checks

Ensure the voltage and frequency of the
supply corresponds to the values indicated
on the electrical data label.
Ensure that the pump shaft is rotating freely.
Fill the pump body through the hole on the upper
part of the pump body. Once finished, ensure that
the cover is properly secured.
connections for leaks.
THIS PUMP MUST NEVER BE DRY RUN.

4. STARTING

Ensure all valves in the pipework are open.
Connect power supply. There will be a delay before
water appears at the end of the discharge pipe.
Viewings from the fan ensure that the rotation of the
motor is clockwise. On three phase pumps the
motor may rotate anticlockwise. If this is happening,
the flow will be lower than expected. To rectify this
situation the two supply phases need to be re-
versed.
Ensure that the absorbed current is the same or
lower than the maximum shown on the name plate.
Adjust the thermal relay if is necessary.
If the pump fails to operate refer to the possible
faults, causes and solutions list for assistance.
9
a motor-protective circuit
Check all joints and
EN