Biral AD 401 [27/92] English

Biral AD 401 [27/92] English
4.6 Minimum pressure
The minimum pressure in the pump connection at –10 °C+75 °C
to ensure lubrication of the friction bearings:
at < 75 °C 0,10 bar
< 90 °C 0,55 bar
<110 °C 1,20 bar
The values apply up to 500 m above sea level.
Additions for higher altitudes:
0.01 bar per 100 m of altitude
Install the sluice gate before and after the pump.
This prevents the fluid from being drained and refilled
when the pump is exchanged.
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 7.2) so that the minimum delivery pressure of the pump
can exceed the closing pressure of the valve at any time.
english
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