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4.4 Installation position
As supplied
Cable screw connector left
The arrow on the pump
housing indicates
the direction of flow.
The terminal box must not
face upwards, since water
could then easily penetrate.
The terminal box can be
turned through 90° before
installing the pump.
For this purpose the
4 housing screws can be
released and the motor
head turned to the permitted
terminal box position.
Do not displace or damage
the seal between motor
and pump housing.
After inserting the screws
tighten crosswise alternately.
The arrow on the pump
housing indicates
the direction of flow.
The shaft must always be
horizontal, never vertical.
4.5 Return valve
If a return valve has been fitted, the pump must be set up (see 5.4.2)
so that the minimum delivery pressure of the pump can exceed
the closing pressure of the valve at any time.
Install the sluice gate before and after the pump.
This prevents the fluid from being drained and refilled
when the pump is exchanged.
4.6 Minimum pressure
The minimum pressure in the pump connection at 75 °C
to ensure lubrication of the friction bearings:
The values apply up to 500 m above sea level.
Additions for higher altitudes:
0.01 bar per 100 m of altitude
at 75 °C 0,05 bar
90 °C 0,30 bar
110 °C 1,10 bar
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