TELLARINI POMPE EEM 20 Livret D'emploi Et D'entretien page 16

The typical direction corresponding to positions 1 and 2 for pumps with single-phase motor is shown in ill. 8 (second and third line);
it is not binding, in some models it could be inverted.
In the pumps with three-phase motor the direction also depends on the connection to the power supply.
The electric pumps with direct current motor are supplied without switch reverser and cable but with a terminal board for the con-
nection to the power supply; the flow direction is fixed, the way of connection to the power supply uninfluential. The typical direction
(but it should be verified when installing the pump) is shown in the ill. 8 (first line).
2.5 - SEALS
The impeller, that is the rotating mechanical unit allowing the pump operation, is driven through a shaft by the motor; an opening
in the pump body allows the passage of the shaft. The "seal" is a device that prevents the liquid from leaking through the space
necessarily existing between the rotating shaft and the opening in the pump body. "TELLARINI" pumps adopt two kinds of seal:
- lip seal with stainless steel spring; good points: low cost, aptitude to be used occasionally; defect: the wear that, with the
passing of time, is produced on the shaft in correspondence with the seal lip;
- mechanical seal ceramic/graphite; good points: a great number of hours of operation before repairs, absence of wear on
the shaft; defect: a higher cost.
Both seals can be supplied with rubber parts made of NBR or VITON; the choice depends on the type of liquid and on its tem-
p e r a t u r e .
- NBR is suitable for general use and for not too high temperatures (max 90° C)
- VITON is recommended for higher temperatures (up to 130° C) or for corrosive liquids.
These are general instructions; for the right choice you should refer to reliable tables of chemical compatibility or consult our techni-
cal department. Tab. C presents the seal types supplied standard or on request for each model.
2.6 - ACCESSORIES AT DISPOSAL
- Handle (for all the models type 20 and 25, for EEM 30 and EEM 40) or truck (for all types) to make transport easy;
- manual by-pass fitted in the pump to regulate its capacity and head; the instructions are included in this handbook;
- drain plug , to empty the pump body without removing the pipes.
3 - INSTALLING AND OPERATING INSTRUCTIONS
3.1 - TRANSPORT
The use of handling equipments is not required; the weight of the pump is written on the plate; for models weighing over 20 kg the
pump should be carried by two people; should the pump be frequently moved, some accessories are available to make the trans-
port easier: handle (for lighter models) or truck; never carry the pump using the electric cable.
3.2 - INSTALLATION AND USE
1) After unpacking the pump, before installing it check that all parts are intact: any break happened during transport may cause
mechanical hazard (e.g. if the fan cover is broken) or electrical hazard (e.g. if the switch reverser box is broken).
2) Assemble the handle or truck, if present; see ill. 5 (handle) or 6 (truck).
3 ) Place the pump in a dry place on a horizontal surface; if the downfall of the pump may cause hazards (for example if it is placed in a
high position) it must be fixed with screws (see in the illustration 6 how the pump is fixed to the truck); the downfall may be caused by:
- vibrations during operation
- entanglement of a person in the pipes
- entanglement of a person in the electric cable.
Never hang or fix the pump using the electric cable.
4) Fill the pump body with liquid through one of the hoses; as the pump is self-priming, this operation is necessary only for the
first priming or when the pump has been emptied; when stopped, even if the pipes are emptied, a quantity of liquid sufficient for
priming remains within it. Also a different positioning is possible (e.g. on a vertical surface) but the pump loses its self-priming
c a p a b i l i t y.
WARNING: the inner walls of the pump may be dirty with traces of lubricants (grease, cutting fluid); if these substances can
contaminate the pumped liquid (for example if it is a food fluid), follow this procedure when you install the pump for the first
t i m e :
- fill the pump with a detergent solution (e.g. liquid soap);
- leave it operate;
- rinse the pump body by pumping clean water (see the following installation instructions).
5) Pumps of bronze
Screw the fittings down the pump hoses, as it is shown in the illustrations 5 and 6 after checking that the fittings are equipped
with gaskets; the position shown in the illustration is one of the two possible; the position of the straight and curved fittings can be
inverted; the supplied couple of fittings allows to fit most applications.
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