Technical-Production Characteristics; Electrical Connection - EBARA OPTIMA Serie Manual De Uso Y Mantenimiento

by connecting the accessible conducting parts to an
earth conductor. This ensures that accessible parts
cannot become dangerous should the main insula-
tion become faulty.
5.3. RESIDUAL RISKS FOR SURFACE PUMPS
residual risks include the following:
a) The possibility of coming into contact (even if not accidentally) with
the motor's cooling fan by inserting thin objects (e.g. screwdrivers,
sticks and similar) through the fan cover holes.
b) For single-phase pumps, possible start-up without notice due to au-
tomatic rearm of the motor protection device, following the latter's
intervention due to motor overheating.

6. TECHNICAL-PRODUCTION CHARACTERISTICS

The motor-driven pump you have purchased has been designed and
manufactured in compliance with the following directives:
• Mechanical hazards (annex i Machinery directive):
- UNI EN ISO 12100
• elecTrical hazards (annex i Machinery directive):
- UNI EN ISO 12100
- CEI EN 60204-1
• various risks (enclosure i Machines directive):
- 2006/42/EC – Enclosure I
The electrical components and relative circuits installed on the
motor-driven pumps are in accordance with the cei en 60204-1
Directive.
7. INSTALLATION AND DISMANTLING, TRANSPORT
AND STORAGE
WARNING!
INSTALLATION MUST BE CARRIED OUT BY A
QUALIFIED ENGINEER.
7.1. GENERAL INSTALLATION PRECAUTIONS
a) Use metal or rigid plastic pipes in order to avoid their yielding be-
cause of the depression created at suction;
b) support and align pipes so that they do not put any stress on the pump;
c) avoid throttlings caused by bending suction and delivery hoses;
d) seal any piping connections: air infiltration in the suction pipe nega-
tively affects pump operation;
e) we recommend that a non-return valve and a gate are installed on
the delivery pipe at the motor-driven pump outlet;
f) fix the piping to the reservoir or to any fixed parts so that it is not
supported by the pump;
g) do not use a lot of bends (goosenecks) and valves;
h) on SURFACE PUMPS installed above head, the suction pipe should
be fitted with a foot valve and filter in order to prevent foreign matter
from entering and its end should be immersed at a depth that is at
least twice the diameter of the pipe; its distance from the bottom of
the reservoir should also be one and a half times its diameter.
For suctions longer than 4 metres use an oversized pipe (1/4" wider
at suction for improved efficiency).
7.2. INSTALLATION
a) Position the pump on a flat surface that is as close as possible to the
water source. leave enough space around the pump to allow safe
use and maintenance. A free space of at least 100 mm must be kept
in front of the cooling fan of surface pumps in all cases;
b) lower submersible pumps using a rope fixed to the handle and
hooks provided;
c) use pipes of suitable diameters (see ParT 2) fitted with threaded
sleeves that must be screwed onto the pump suction and delivery
unions or its threaded counterflanges;
d) SURFACE PUMPS cannot be moved or used in the open except as
stated in PART 2;
e) for specific instructions, consult the chapter "PreParing For
USE" in PART 2.
7.3. DISMANTLING
The following must be done when moving or dismantling the motor pump:
a) disconnect the electric supply;
b) remove the delivery and suction pipes (where present) if too long or
bulky;
c) if present, unscrew the screws that secure the motor-driven pump to
its supporting surface;
d) if present, hold the power cable;
e) lift the motor-driven pump using equipment suitable to the pump
weight and dimensions (refer to the plate).
7.4. TRANSPORTATION
The motor-driven pump is packed in a carton or can be fixed to a wood-
en pallet, if pump weight and dimensions allow it. Transportation should
not, in any case, present any particular problems.
verify the total weight stamped on the box.
7.5. STORAGE
a) The product must be stored in a covered and dry place, far away
from heat sources and protected against dirt and vibrations.
b) Protect the product against damp conditions, heat sources and me-
chanical damage.
c) Do not place heavy objects on the packaging.
d) The product must be stored at an ambient temperature between
+5°c and +40°c (41°F – 104°F) with a relative humidity of 60%.

8. ELECTRICAL CONNECTION

− ELECTRICAL CONNECTION MUST BE CARRIED OUT BY A
QUALIFIED ENGINEER.
− IT IS ADVISABLE TO INSTALL A HIGH INTENSITY DIFFEREN-
TIAL SWITCH (0.03 A) ON BOTH THE THREEPHASE AND SIN-
GLE PHASE VERSIONS.
WARNING!
Motor-driven pumps not equipped with a plug must be
powered by connecting them permanently to the elec-
trical cabinet equipped with a switch, fuses and ther-
mal cut-out calibrated to the pump's absorbed current.
The mains must be reliably earthed, according
to the electrical regulations in force in the user's
country: this is the installer's responsibility.
If the motor-driven pump is supplied without a pow-
er cable, use a cable that complies with the regula-
tions in force and the necessary section according
to length, power and mains voltage.
If present, the plug of the single phase version must
be connected to the mains far from sprays, water
jets or rain and it must be accessible.
The three phase version does not have an inter-
nal motor protector, therefore overload protection
must be provided by the user.
MOTOR-DRIvEN SURFACE PUMPS
WhILE CONNECTING, MAkE SURE ThAT BOTh ThE TERMINAL
BOARD AND ThE MOTOR DO NOT GET WET.
– Connection of the single phase versions must be made on the basis
of whether thermoamperometric protection "P" is internal (Fig. 1) or
external (FIG. 2).
– For threephase versions, after connecting the star (FIG. 3) or triangle (FIG.
4) cable to the terminal board, looking at the pump from the motor side,
check that the cooling fan turns in the same way as the arrow on the
label applied on the fan cover. if it is incorrect, swap two of the three
wires over on the motor's terminal strip.
– For applications with inverter use a cable length <25 meters.
SUBMERSIBLE MOTOR-DRIvEN PUMPS
– In single phase versions, plug the unit into the socket.
– For threephase versions (FIG. 5), check that the motor turns in a
clockwise direction looking at the pump from the top, proceed as
follows: with the motor-driven pump not yet secured to the system,
EN
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