Operating Data - SAER Elettropompe TM Serie Manual De Empleo Y Mantenimiento

4.3 Constructional features
Suction body with axial inlet; intermediate stage composed of stage body and the corresponding diffuser with wearing
rings. Replaceable impeller seats. Delivery body with upward outlet, with the possibility of turning it at 90°C., both
directions. Drive side bearing support with high rigidity. Suction side support of sliding type, lubricated by the pumped
liquid. Shaft in stainless steel completely protected. Adjustable packing seal on the shaft, in alternative not balanced
or balanced mechanical seal, according to the working pressure. External tie rods for tightening of the intermediate
stages.
4.4

Operating data

3
Flow rate: up to 230 m /h
Head: up to 400 m
Speed: 1450 – 3500 R.P.M.
Inlet: PN 16
Outlet: PN 40
Maximum working pressure: 40 bars
Temperature of pumped liquid: min:-15°C max: 120°C (90° with stuffing box packing, standard)
Ambient Temperature (group of electric pump): max 40°C (please, request verification for higher temperatures).
The pumped liquid has to be chemically and mechanically suitable for the utilized materials.
4.5 Applications and Use
The centrifugal multistage horizontal pumps of series TM are used in irrigation systems, systems of high pressure
lifting, refrigeration, heating, snowing, cleaning, in boiler systems, in condensed extraction and in fire-fighting systems.
Do not use the pumps for uses other than those specified. Any other use is to be considered improper and,
for this reason, potentially dangerous for the operator's health as well as voiding the warranty.
Never use the electric pump in explosive atmospheres or to pump inflammable or dangerous liquids.
Check the norms locally in force concerning the indicated materials for particular uses (use with drinking
water or foodstuffs, fire protections, etc...).
In order to avoid seriously damaging the components, observe the following recommendations:
– never use the pump in absence of liquid;
– never use the pump with null delivery (closed delivery);
– always use the pump with a delivery indicated in the working diagram.
4.6 Frequency of start-ups
To avoid a sharp increase in motor temperature and excessive stress on the pump, joint, gaskets and bearings, we
recommend never exceeding the maximum number of start-ups/hour indicated in the following tables, according to
the power and the type of motor:
Start-ups/hour with 2 poles
Installed Power (kW)
Up to 22 kW
from 30 kW to 37 kW
from 45 kW to 55 kW
from 75 kW to 90 kW
Start-ups/hour with 4 poles
Starts/hour Installed Power (kW)
15 Up to 37 kW
10 from 45 kW to 55 kW
7 from 75 kW to 90 kW
4
®
ELETTROPOMPE
Starts/hour
15
10
8
13