Espa MULTIPOOL N, Инструкция по эксплуатации, Страница: 9 / 40

9
EN
2. HANDLING
The pumps are supplied suitably packaged to pre-
vent damage in transit. Before unpacking, check
that the packaging has not been damaged or de-
formed,
Lift and handle the product with care and with
the right tools.
3. INSTALLATION
These pumps are designed for both indoor and
outdoor use.
Make sure that pump is never submerged and that
it rests in a dry and well aired room.
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.
Ensure that the pump mount rests squarely on the
base before fixing.
3.2. Suction pipe assembly
The suction pipe, if longer than 7 meters, 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 pos-
sible to the water.
The end of the suction pipe must always remain at
least 30 cm below the water level. (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 re-
duce loss of head caused by friction in longer pipe
runs.
Pipework must be supported and their weight must
not rest on the pump.
If a foot valve has not been installed it is recom-
mended to fit a check valve to prevent accidental
draining down of the system.
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 = 30 mA)
The power cable must correspond at least to the
type H05 RN-F (according to 60245 IEC 57) 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.Three phase motor pumps do not
incorporate this protection. They must be
connected to a motor-protective circuit
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 electri-
cal 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 with water through the self prim-
ing plug opening. If a foot valve has been installed,
also fill the suction pipe.
Check all joints and 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 mo-
tor 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.
The self-priming time can take several minutes.