Espa TECNO, Instruction Manual, Page: 12 / 48

12
EN
Single-phase motor pumps 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.
In the TECNOSELF models, the self-priming time
can take several minutes.
5. MAINTENANCE
Under normal conditions these pumps require no
special or planned maintenance.
Clean the pump with a damp cloth without using
harsh products.
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 Services list is in
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 way, use the waste
collection service. If this is not possible, contact the
nearest ESPA service workshop.
7. PLATE SHOWING CHARACTERISTICS
DESCRIPTION
1 Item reference
2 V fre item specifications
3 Flow
4 Pressure
5 Nominal voltage, no. stages, alternate current symbol and frequency
6 Energy efficiency index (Three-phase model)
6 Capacitor (Single-phase model)
7 EC mark
8 Humidity protection level
9 Minimum working pressure
10 Maximum pressure
11 Year and week of manuf Pump serial no.
12 Thermal protection incorporated indicator
13 Max. liquid temperature
14 Motor max. nominal output (P2)
15 Electric pump unit absorbed power (P1)
16 Designated motor insulation
17 Continuous operation symbol
18 Maximum nominal intensity at nominal voltage
19 Name and address of vendor responsible for the product