Grundfos TPE3 - Inlet Pressure; Electrical Data; Sound Pressure Level; Environment

English (US)
6
7.6 Inlet pressure
To ensure optimum and quiet pump operation, the inlet pressure
(system pressure) must be adjusted correctly. See table on
page 51.
For the calculation of specific inlet pressures, contact the local
Grundfos company or see the data booklet for TP(D), TPE(D),
TPE2 (D) and TPE3 (D) on www.grundfos.us.
7.7 Electrical data
See sections 26. Technical data, single-phase motors and
27. Technical data, three-phase motors.
For specific motor data, see the motor nameplate.
7.8 Sound pressure level
The sound pressure level of the pump is lower than 70 dB(A).
7.9 Environment
Non-aggressive and non-explosive atmosphere.
7.10 Installation altitude
Installation altitude is the height above sea level of the installation
site.
• Motors installed up to 3281 ft (1000 m) above sea level can be
loaded 100 %.
• Motors installed more than 3281 ft (1000 m) above sea level
must not be fully loaded due to the low density and
consequent low cooling effect of the air. See fig. 3.
Fig. 3 Derating of motor output power (P2) in relation to
altitude above sea level
7.11 Air humidity
Maximum air humidity: 95 %.
If the air humidity is constantly high and above 85 %, one of the
drain holes in the drive-end flange must be open. See section
5. Delivery and handling.
7.12 Motor cooling
To ensure cooling of motor and electronics, observe the following:
• Position the motor in such a way that adequate cooling is
ensured. See section 8.7 Ensuring motor cooling.
• The temperature of the cooling air must not exceed
122 °F (50 °C).
• Keep cooling fins and fan blades clean.
Caution
The motor must not be installed more than
6562 ft (2000 m) above sea level.
TM05 6400-U.S. 1013
1
0.99
0.98
0.97
0.96
0.95
0.94
0.93
0.92
0.91
0.90
0.89
0.88
0
0
3281 3937 4593 5249 5906 6562 7218
[ft]
P2
[%]