TELLARINI POMPE EEM 20 Livret D'emploi Et D'entretien page 14

Examples of use:
- the same liquids suitable for bronze pumps, allowing in this case a much longer life of the machine;
- compatible corrosive liquids;
- ood liquids, e.g. wine, vinegar, olive oil, milk (only with the standard gaskets in NBR or with gaskets in TEFLON); for these uses
it is necessary to adopt suitable methods to wash and disinfect the pump, according to the type of liquid (see chapter 5.1).
I M P O R TA N T
The use of the electric pump in places presenting the risk of explosion and fire (defined according the law
standards) is strictly forbidden; in particular it must not be used to pump the liquids for which the stan-
dards prescribe the use of an explosion-proof motor; absolutely forbidden uses are, for example, petrol,
acetone, solvents, etc.
(Standard references: international standards IEC 79-10, Italian standards CEI 64-2)
1.2 - PLACE OF USE
- Closed, dry and clean place (the pump is not submergible).
- Normal or sea atmosphere
- Ambient temperature between -15° C and 40° C
- Maximum relative humidity 80%
- Maximum altitude 1000 meters
2 - TECHNICAL DESCRIPTION
2.1 - SPECIFICATIONS
The pump sucks in the liquid from one hose (suction hose) and sends it to the other hose (delivery); a fundamental quantity that
characterizes the pump is the capacity Q (quantity of liquid transferred in a given time); the pumping operation speed depends
on it.
The capacity of a pump is not fixed, it depends on the total manometric head H required by the installation, which is the sum of
two elements:
1) the difference in height (vertically measured) between the level of the liquid in the delivery tank and that of the suction tank;
2) energy losses provoked by pipes, valves, fittings and other elements inserted in the path of the liquid.
The following table (Tab. A) indicates the capacity in liters/minute depending on the total manometric head (in meters) for the various
types of pumps; the table refers to the operation with clean water at 20° C. The tolerances are those admitted by the standard ISO
2548 for mass-produced pumps of cathegory C.
The table also indicates the value of the maximum head reached when delivery is closed. This value is expressed in meters; it can
also be expressed as pressure (therefore in bars); approximately 10 meters correspond to one bar. This value is important as the
delivery pipe must resist this maximum pressure.
Tab. A also indicates the sound pressure equivalent level weighed A (L eqA ) for each model in the following conditions:
- operating ambient, pump placed at 0.8 meters height
- measurement at one meter distance from the machine surface and at 1.60 meters from the ground
- operation with clean water at 20° C at the head for which noise is highest.
2.2 - COMPONENT LIST
Table B contains the global components list, which refers to ill. 1,2,3,4.
- ill. 1 shows the exploded drawing of the pump with single-phase motor type ENM 20, ALM 20, ALM 20 L; the model EEM 20 dif-
fers because there is a different switchreverser; the models ENT 20 and ALT 20, with three-phase motor, differ for the absence of
the capacitor;
- ill. 2 shows the exploded drawing of the pump with single-phase motor type ENM 25, ENM 25S, ENM 30, ENM 35, ENM 40, ENM
50, ALM 25, ALM 30, ALM 40, ALM 50; the models EEM 25, EEM 30, EEM 35, EEM 40 differ because there is a different switchre-
verser; the models ENT 25, ENT 25S, ENT 30, ENT 35, ENT 40, ENT 50, ALT 25, ALT 30, ALT 40, ALT 50 with three-phase motor
differ for the absence of the capacitor;
- ill. 3 shows the motor part components of direct current pumps; ECC 12/20, ECC 24/20, AL 12/20, AL 24/20 have motor part as
shown in ill. 3 and pump part as shown in ill.1; pumps ECC 12/25, ECC 24/25, ECC 24/40, AL 12/25, AL 24/25, AL 24/40 have motor
part as shown in ill. 3 and pump part as shown in ill. 2;
- ill. 4B shows the mechanical seal with its component parts in the models with pump body of stainless steel and in the models of
bronze type 20; ill. 4A shows the mechanical seal with its component parts in the other models; when present it substitutes no. 67
(ill. 1 and 2); the seal washer (ref. 14) is not present in all the models.
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