Grundfos TP Serie Instrucciones De Instalación Y Funcionamiento página 8

The motor must never fall below the
Caution
horizontal plane.
For inspection and motor/pump head removal, the
following clearance is required above the motor:
• 300 mm for motors up to and including 4.0 kW.
• 1 m for motors of 5.5 kW and up.
See fig. 7.
0.25 - 4.0 kW
0.25 - 4.0 kW
300 mm
Fig. 7 Required clearance above the motor
Twin-head pumps installed in horizontal pipes must
be fitted with an automatic air vent in the upper part
of the pump housing. See fig. 8. The automatic air
vent is not supplied with the pump.
Fig. 8 Automatic air vent
8
5.5 - kW
5.5 kW and up
1 m
If the liquid temperature falls below the ambient
temperature, condensation may form in the motor
during inactivity. In this case, make sure that the
drain hole in the motor flange is open and points
downwards. See fig. 9.
Drain hole
Fig. 9 Drain hole in motor flange
If twin-head pumps are used for pumping liquids with
a temperature below 0 °C / 32 °F, condensed water
may freeze and cause the coupling to get stuck. The
problem can be remedied by installing heating
elements. Whenever possible (pumps with motors
smaller than 11 kW), the pump must be installed with
the motor shaft in horizontal position. See fig. 8.
The technical data in section
Caution
data must be observed.
9. Technical