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Idiomas disponibles
Idiomas disponibles
1
Motor fan
2
Fan cover
3
Front bearing
4
Pump flange
5
Counterflange
6
Brush holder
7
Brush
8
Counterflange gasket
9A
Stainless steel Seeger ring
9B
Stainless steel seal ring
9C
Brass seal ring
9D
Seal spacer
10
Pump body
11
Pump cover
12
O-ring
13
Impeller
3.3 – MAXIMUM PRIMING HEIGHT
The maximum priming height is the maximum difference in level between
the pump and the level of the liquid to be pumped with which it can
perform suction of air from the suction hose and start pumping.
With water at 20° C this value can reach 6 metres, but it depends on the
quantity of liquid present inside the pump during priming; this quantity
depends on the installation methods of the pump and on the configuration
of the hoses. To achieve maximum priming performances, comply with the
following installation measures:
1) Discharge hose: during priming the liquid contained in the pump is
pushed outwards through the discharge port; therefore, the quantity of
liquid decreases, causing reduced priming; avoid this by positioning the
discharge hose so that liquid that has flowed out returns inside the pump,
for example, by pointing the initial part upwards with a difference in level of
50 cm.
2) Suction hose: the initial part pointing upwards with a difference in level
of 20 cm increases the quantity of liquid that remains inside the pump after
it is stopped.
3.4 – PUMPING DIRECTION
Pumps with alternating current motor are two-way: by reversing the
direction of rotation of the motor the direction of liquid flow is reversed. For
this purpose, machines are equipped with a 3-way switch: 0 = off, 1 = on,
2 = on with liquid flowing in the opposite direction to position 1. The typical
pumping directions in single-phase machinery are described in Fig. 8,
lines 2 and 3. In three-phase machinery the direction depends on the
connection to the power supply.
In direct current partly completed machinery, the pumping direction is fixed
and is unrelated to connection of the power supply cables to the terminal
block. The typical pumping direction is described in Fig. 8, line 1. The
typical pumping directions are not binding, and in some examples could
be inverted.
3.5 – SHAFT SEALING DEVICES
The impeller, i.e. the rotating mechanical part that allows the pump to
operate is activated through a shaft by the external motor; the pump body
has an opening for the shaft to pass through. The "shaft seal" is the device
that prevents liquid from leaking through the space between the shaft and
the opening in the pump body. Two types of seal are adopted:
- ring seal (lip seal) with stainless steel spring; the standard seal used in
brass versions is the NBR rubber lip seal, unless otherwise specified by a
label affixed to the pump;
- mechanical seal (Fig. 3A); the standard type of seal used in the
stainless steel series AL is the ceramic/graphite/ AISI 316/ NBR rubber
version, unless otherwise specified by a label affixed to the pump; it greatly
increases the number of hours for which the pump can operate before
requiring maintenance operations and does not cause wear on the shaft.
Various types of seals are available on request (Viton lip seal, silicon
carbide mechanical seals and/or parts in EPDM rubber, Viton, Teflon) to
adapt to the majority of requirements linked to temperature, corrosion and
abrasion. Should you require assistance, please contact our technical
department.
14
Seal washer
15
Tab
Capacitor (single-phase pumps
18
only)
Toggle switch
19A
(series EEM only)
Rotary switch (other single-phase
19B
and three-phase series)
20
Inverter box
21
Terminal box
22
Terminal block
23
Stud
24
Cable clamping bracket
25
Straight fitting
26
Curved fitting
27
Ring nut
Tab .B
3.6 – OPTIONAL ACCESSORIES AVAILABLE
Handle and truck for easy transport.
Manual by-pass to adjust capacity and head; the relative instructions for
use are included in this manual.
Discharge plug or cock, to drain part of the pump body without removing
the hoses.
Filters, to prevent foreign bodies from entering.
Hose kit.
Hose fittings in nylon or stainless steel (for series AL pumps).
4 – INSTRUCTIONS FOR INSTALLATION AND USE
4.1 – HANDLING
Check the weight of the pump indicated on the ratings plate and adopt
methods in accordance with national safety regulations relative to manual
handling of loads. If necessary use lifting systems, lift trucks, personal
protection equipment for manual handling of loads and to prevent the
danger of crushed limbs. If the pump is to be moved frequently,
accessories (handle and truck) are available to facilitate handling.
Do not lift or transport the pump using the power cable, the hoses or
projecting parts (i.e. the inverter or terminal box). Lift the pump by
firmly holding the metal part.
4.2 – INSTALLATION AND USE
To install machinery supplied completed, strictly follow the
procedures indicated below. To incorporate partly completed
machinery, consider the following instructions within the limits of
their applicability. Use them to draw up instructions for use of the
final machinery. All mechanical and electrical installations to be
performed on unprotected parts must be carried out exclusively by
qualified
equipment to protect hands and limbs against crushing, to protect
from sprays and splashes of liquid and to protect against electrical
shock. These must be selected in relation to specific risk
assessment for the installation to be carried out.
Do not start the pump before having completed the installation.
4.2.1 – PRELIMINARY OPERATIONS
- Remove the pump from the packaging and check that all parts are intact:
any breakages that occur during transport can cause dangers of
mechanical or electrical nature.
- Assemble the handle (Fig. 5) or the truck (Fig. 6), if provided. During
transport, the pump must be disconnected from the power supply. After
transport, the truck must be positioned on a completely horizontal surface.
Check that accidental movements of the truck cannot cause danger.
- Position the pump in a dry place (the pump is not submersible) on a
horizontal surface; leave an empty space of at least 10 cm in front of the
motor cooling fan; secure the feet with bolts to prevent movement or falling
39
28
Conical gasket
29
Threaded sleeve
30
Hex head screw
31
Hex head hollow screw
61
Rear guard
62
Rear bearing
63
Casing with stator
64
Shaft with rotor
65
Rear internal part
66
Front internal part
67
Seal
67A
Mech. seal rotating part
Mech. seal fixed part - counter-
67B
face
67C
Mech. seal fixed part - shroud
68
Motor seal
technical
personnel
adopting
personal
protective
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