Grundfos SQE 2 - 55 (96510151) [8/420] Positional requirements

Grundfos SQE 2 - 55 (96510151) [8/420] Positional requirements
English (GB)
8
4.2 Positional requirements
The pump is suitable for vertical as well as horizontal
installation, however, the pump shaft must never fall
below the horizontal plane. See fig. 2.
Fig. 2
If the pump is to be installed horizontally, e.g. in a
tank, and there is a risk that the pump might be
covered by mud, it must be fitted in a flow sleeve.
For installation depths, see section 6.8.2 Installation
depths.
4.3 Liquid temperatures/cooling
Figure 3 shows an SQ/SQE pump installed in a
borehole. The pump is operating.
Figure 3 illustrates the following:
borehole diameter
pump diameter
temperature of pumped liquid
flow past the motor to the pump suction strainer.
Fig. 3
To ensure sufficient cooling of the motor, it is
important to observe the maximum liquid
temperature of 35 °C under all conditions.
The motor should always be installed above the well
screen. If a flow sleeve is used, the pump may be
installed freely in the borehole.
If the actual temperature of the pumped liquid
exceeds the specified value or the operating
conditions otherwise fall outside the specified
conditions, the pump may stop. Please contact
Grundfos.
TM01 1375 4397
Allowed
Not allowed
TM01 0518 1297
The borehole diameter must be at least
76 mm (approx. 3").
Do not let the pump run against a closed
discharge pipe for more than 5 minutes.
When the discharge pipe is closed, there
is no cooling flow and there is a risk of
overtemperature in motor and pump.
Liquid
temperature
Borehole
diameter
Pump
diameter

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