TELLARINI POMPE AL 12/20, Руководство пользователя и по обслуживанию, Страница: 38 / 64

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- must have a maximum temperature of : models without by-pass:
depending on the rubber used to manufacture the gaskets: 90° C (NBR
rubber, which is standard unless otherwise indicated on the pump), 110° C
(EPDM rubber), 130° C Viton rubber;
models with by-pass: 90° C.
Examples of use of the series with brass pump body (series EEM,
ENM, ENT, ECC)
Water, sea water, gas oil, oil, soaps; in the European Union pumps with
brass pumping body are generally not considered suitable for use with
food products, such as milk or olive oil (ref. standard UNI EN 13951).
Application in the food sector is subordinate to checking suitability of the
pumps with the provisions of the specific HACCP plan drawn up by the
user.
Examples of use of series with AISI 316 stainless steel pump body,
material suitable for foods and with excellent resistance to corrosion
and abrasion (series AL)
-
liquid foods, such as wine, vinegar, olive oil, milk; for these uses
appropriate methods of washing and disinfecting the pump must be
adopted, according to type of liquid (see Chapter 4.3);
- compatible corrosive liquids (such as fungicides or liquid fertilizers)
- the same liquids permitted for brass pumps, in this case ensuring a much
longer useful life.
Use of the pump in environments in which there is danger
of explosion or fire (as defined by the law) is prohibited; in
particular, do not use with petrol, acetone, solvents, etc.
2.2 – ENVIRONMENT OF USE
- Ventilated, clean and dry closed environment.
- Normal or marine atmosphere, ambient temperature between –15 °C
and 40 °C and maximum relative humidity 80%.
- Maximum installation altitude: 1000 meters above sea level.
3 – TECHNICAL DESCRIPTION
3.1 - SPECIFICATIONS
The pump can perform suction of liquid from one port (suction port),
sending it to the other port (discharge port); the essential parameter
characterizing a pump is capacity Q (quantity of liquid transferred in a
given time); the speed of the pumping operation depends on this.
The capacity of a pump is not fixed, but depends on the total manometric
head H required by the installation, which is the sum of two contributions:
1) difference in height (measured vertically) between the level of liquid in
the tank of destination and that of the tank or origin;
2) energy losses caused by liquid flow in pipes, valves, fittings, and other
elements inserted along its path.
Tab. A indicates the capacity (in litres per minute) as a function of total
manometric head (in metres) for the various pump types. The same table
also indicates the value of the maximum head Hmax developed by the
pump (expressed in bar, unit of pressure measurement), which is reached
when the discharge port is closed, and the maximum equivalent A-
weighted sound pressure level (LeqA) obtained at 1 metre from the
surface of the pump operating with water at 20° C.
3.2 – LIST OF COMPONENTS
Tab. B contains the list of all components, and refers to Figs. 1, 2, 3A, 3B,
4, 9.
- Fig. 1 : exploded drawing of single-phase electric pumps type ENM 20,
ENM 20 L, ALM 20, ALM 20 L, EEM 20, EEM 20 L and three-phase
electric pumps type ENT 20, ENT 20 L, ALT 20 e ALT 20 L.
- Fig. 2: exploded drawing of single-phase electric pumps type ENM 25,
ENM 25S, ENM 30, ENM 35, ENM 40, ENM 50, ALM 25, ALM 30, ALM
40, ALM 50, EEM 25, EEM 30, EEM 35, EEM 40 and three-phase electric
pumps type ENT 25, ENT 25S, ENT 30, ENT 35, ENT 40, ENT 50, ALT
25, ALT 30, ALT 40, ALT 50;
- Fig. 3A:
mechanical seal;
Fig. 3B : the various systems adopted for fixing
the rotating part of the seal;
- Fig. 4
: components of the motor part of direct current pumps; the pumps
CC 12/20, ECC 24/20, AL 12/20, AL 24/20 have the motor part as shown
in Fig. 3 and the pump part as shown in Fig. 1; the pumps ECC 12/25,
ECC 24/25, ECC 24/40, AL 12/25, AL 24/25, AL 24/40 have the motor
part as shown in Fig. 3 and the pump part as shown in Fig. 2.
- Fig. 9 replaces the parts ref. 18, 19, 20 of Figs. 1 and 2 in the partly
completed machinery of series EEMQ, ENMQ, ALMQ, ENTQ and ALTQ.
TYPE 1 m 5 m 10 m
Hmax
(bar)
LeqA
(dB)
TYPE 1 m 5 m 10 m
Hmax
(bar)
LeqA
(dB)
EEM 20 L, ENM 20 L, ENT 20 L 12 3 0.6 69 ECC 24/25 55 45 30 2.2 75
EEM 20, ENM 20, ENT 20 28 22 15 2.2 77 ECC 24/40 140 108 70 1.7 80
EEM 25, ENM 25, ENT 25 43 29 9 1.2 71 ALM 20 L, ALT 20 L 8 0.4 60
ENM 25S, ENT 25S 88 83 77 4.8 83 ALM 20, ALT 20 32 27 21 1.8 77
EEM 30, EEM 35 86 67 42
1.7
74 ALM 25, ALT 25 43 28 8
1.0
71
ENM 30, ENT 30 86 69 45 1.7 81 ALM 30, ALT 30 89 80 70 4.0 83
ENM 35, ENT 35 86 69 45 1.7 81 ALM 40, ALT 40 137 112 76 1.6 77
EEM 40 125 97 64 1.5 77 ALM 50, ALT 50 205 176 140 2.6 82
ENM 40, ENT 40 130 100 68
1.7
78 AL 12/20 25 17 7
1.2
79.7
ENM 50 230 208 170 2.9 91 AL 24/20 25 17 7 1.3 81.8
ENT 50 230 208 170 2.9 91 AL 12/25 55 36 9 1.3 75.8
ECC 12/20 25 18 10 1.5 75 AL 24/25 55 38 16 1.5 80.8
ECC 24/20 26 20 13 1.6 76 AL 24/40 157 120 73 1.6 72.1
ECC 12/25 55 42 22 1.8 74
Data obtained with water at 20° C – Tolerances: standard ISO 2548 for Class C mass produced pumps
Tab. A