ALP
since 1928
ALP
since 1928
27
For PUMPS II 3 G T4, II 2 D et II 3D : for dust zones, D becomes IP6X
According to the specific requirements for ATEX materials group II category 3, the use of such materi-
als in an exposable atmosphere is adapted only under normal working conditions of the known material.
Thus, the end-user must make sure that the pump is used under normal working conditions, and that the
particular working limits indicated in this manual are respected.
3 - Protection of the transmission part
The reducer and the motor which motorize the pump must be used within the limits of working defined by
the manufacturers of these materials. Going beyond these limits is likely to generate a risk of ignition of the
atmosphere surrounding the material.
The ALBIN PUMP installations are in particular designed so that the normal working conditions of the pump
do not generate an overload of the motor or the reducer.
So that the function limits of these components are not exceeded, even in case of dysfunction of the pump,
the motor will have to be protected from the overcurrents, in accordance with the code of practice.
4 - Particular dispositions when using a frequency inverter
The Albin peristaltic pumps have variable limits of working according to the discharge pressure, number of
rotations of the pump and temperature of the pumped product. These working limits are mainly imposed by
the heating of the hose, on which the lifespan is strongly dependent.
Within the framework of an application required to change the speed of the pump, the three following points
will have to be checked.
> Temperature of pumped product
> Number of rotations of the pump
> Discharge press
The maximum values of use will be fixed at the determination of the pump whose copy is in the appendix.
5 - Dry running the pumps
The Albin peristaltic pumps can function in the absence of liquid in the pump, without causing heating of the
pump higher than the classified of temperature T, in particular for the period of starting-up of the pump.
In fact, dry running the pump with blocked inlets or outlets generates too high a demand on the pump
hose, and can generatehigh internal temperatures because of the compression and decompression of the air
locked up between the pump and the blocked opening.
This type of dysfunction is not controllable by a safety device (of sensor type) because the pump is dry and
the mechanical constraints generated on the pump are low. Starting up the pump must thus be done after
having checked that the inlet and outlet are not blocked.
Nevertheless, dry running is not a normal function of the pump and if it doesn’t directly constitute a risk of
ignition, it leads to premature wear and tear of the hose. This type of function must be limited as much as
possible.
ALP Instruction Manual -2011EE-GB.indd 27
21/07/11 20:49
