Espa NADORSELF 300 Manual De Instrucciones página 13

3.4. Electrical connection
The electrical installation must have a multi-
pole isolator with minimum 3mm 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 a
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.
motor-protective circuit
Check all joints and
12
5. MAINTENANCE
Under normal conditions these pumps require no
special or planned maintenance.
Clean the pump with a damp cloth without using
harsh products.
We recommend that in cold weather, when
there's risk of freezing, to completely drain
the pipes and pump body by removing the
drain plug.
If the pump is not to be operated for a long
period it is recommended to remove it from
the installation, drain down and store in a dry,
well ventilated place.
ATTENTION: In the event of faults or
damage occurring to the pump, repairs
should only be carried out by an authorised
service agent.
The Official Technical
www.espa.com.
6. DISPOSING OF THE PRODUCT
When the pump is eventually disposed of, please
note that it contains no toxic or polluting material.
All main components are material identified to allow
selective disposal.
This product or parts of it must be disposed of in an
environmentally sound
collection service. If this is not possible, contact the
nearest ESPA service workshop.
www.bsvillage.com
EN
Services list is in
way, use the waste