Proper Usage; Pumped Liquids; Minimum Flow Rate Q Min; Connections And Pipelines - GEA durietta I Bloc Installation And Operating Instructions Manual

Product description

3.3 Proper usage

3.3.1 Pumped liquids

3.3.2 Minimum flow rate Q

3.3.3 Connections and pipelines

3.3.4 Motor activation

3.3.5 Design

3.4 Technical data

BA.017.BYY.001.01.10.GB
W arn in g
Improper usage!
!
Only pure or slightly contaminated liquids with a maximum
particle size of 0.4 mm may be pumped. These liquids may
not chemically or mechanically attack the pump materials or
lower their strength. If liquids with a viscosity greater than that
of water are to be pumped, make sure that the motor will not
be overloaded. The pump may not be operated beyond the
maximum allowable values. Even short periods of pressure
overload (e.g., as a result of a pressure surge) should be
avoided.
Do not operate the pump below minimum flow rate of
min
Q
min
The nominal diameters of the system pipelines should be
equal to or greater than the nominal diameters of the pump,
i.e., DNE (suction side) and DNA (pressure side), and the
connecting elements to the pump must conform exactly to the
design standard/specification of the mating connector piece
installed on the pump. The suction line must be absolutely
leak-tight and laid in such a way that no air pockets can form.
Avoid tight elbows and do not install valves immediately up-
stream of the pump. The suction head of the system may not
be greater than the suction head guaranteed by the pump.
Do not start and stop the motor more than 15 times per hour.
All information and descriptions in this operating manual con-
cerning the use and operation of the pumps are based exclu-
sively on the standard designs.
These rules do not apply to special designs, to customer spe-
cific modifications, or to random external influences which
may occur during use and operation.
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Overloading the pump!
!
Death, serious bodily injury, damage to property.
Pump only media that are specified in the order. The
pump has been specially designed for that purpose.
Operate the pump only in the electrical network specified
in the order.
= 10 - 15 % Q .
opt
Death, serious bodily injury, damage to property.
Use the pump only under the indicated operating condi-
tions.
Also avoid short over pressure situation (e.g. caused by
pressure surge).
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