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13
9. Technical data
9.1 Ambient temperature
Maximum +55 °C (~ +131 °F).
9.2 Liquid temperature
–25 °C (~ –13 °F) up to +140 °C (~ +288 °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.
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).
9.4 Inlet pressure
To ensure optimum and quiet pump operation,
the inlet pressure (system pressure) must be
adjusted correctly. See table on page 27.
For the calculation of specific inlet pressures,
contact the local Grundfos company or see the data
booklet for TP(D)/TPE(D), if at hand.
9.5 Enclosure class
Closed drain hole in motor: IP55.
Open drain hole in motor: IP44.
(Drain hole, see fig. 8.)
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 table on page 39.
9.8 Environment
Non-aggressive and non-explosive atmosphere.
Relative air humidity: Maximum 95 %.
If the pump is operating with liquids at
high temperatures, the life of the shaft
seal may be reduced. It may be
necessary to replace the shaft seal
more often.
Pressure
stage
Operating
pressure
Test pressure
bar MPa bar MPa
PN 6 6 0.6 10 1.0
PN 6/PN 10 10 1.0 15 1.5
PN 16 16 1.6 24 2.4
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