Blanking Flanges; Technical Data; Ambient Temperature; Liquid Temperature - Grundfos TP Serie Instrucciones De Instalación Y Funcionamiento

8.5 Blanking flanges

For twin-head pumps, a blanking flange with a pump
housing gasket is available. See fig. 18.
Fig. 18 Fitting the blanking flange
If one pump requires service, the blanking flange is
fitted to allow the other pump to continue operating.

9. Technical data

9.1 Ambient temperature

Maximum 55 °C (131 °F).

9.2 Liquid temperature

-40 - +150 °C (-40 - +302 °F).
The maximum liquid temperature depends on the
mechanical shaft seal type and the pump type.
Depending on the cast-iron version and the pump
application, the maximum liquid temperature may be
limited by local regulations and laws.
The maximum liquid temperature is marked on the
pump nameplate.
If the pump is operating with liquids at high
temperatures, the life of the shaft seal may
Note
be reduced. It may be necessary to
replace the shaft seal more often.
16

9.3 Operating pressure/test pressure

The pressure test has been made with water
containing anti-corrosive additives at a temperature
of 20 °C (68 °F).
Operating
Pressure pressure
stage
[bar]
PN 6 6
PN 6 / PN 10 10
PN 16 16
PN 25 25

9.4 Inlet pressure

To ensure optimum and quiet pump operation, the
inlet pressure (system pressure) must be adjusted
correctly. See the table on page 341.
For the calculation of specific inlet pressures,
contact the local Grundfos company or see the data
booklet for TP, TPD, TPE, TPED, TPE2, TPE2 D,
TPE3, TPE3 D, if at hand.

9.5 Enclosure class

Closed drain hole in motor: IP55.
Open the drain hole in motor: IP44. See fig. 9.

9.6 Electrical data

See motor nameplate.

9.7 Sound pressure level

Pumps with single-phase motors
The sound pressure level of the pump is lower than
70 dB(A).
Pumps with three-phase motors
See the table on page 353.

9.8 Environment

Non-aggressive and non-explosive atmosphere.
Relative air humidity: Maximum 95 %.
Test pressure
[MPa] [bar] [MPa]
0.6 10 1.0
1.0 15 1.5
1.6 24 2.4
2.5 38 3.8