Portafill 4000T, Руководство пользователя

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4000T
4.13 Load Sensing on 4000 Models
On the 4000 track and wheel models there is
hydraulic load sensing that will slow the
feeder belt down when the pressure rises on
the drum circuit.
This picture shows the hydraulic pressure
gauge that takes a reading for only the drum.
On the side of the engine control panel you
will find a series of other pressure gauges but
these measure other pressure circuits. There
are two main circuits on the 4000. The drum
is on a circuit with the fines conveyor and the
pressure gauge for that circuit shows the total
pressure of the drum and fines conveyor
together. Whereas the gauge above just
shows the pressure for the drum.
You can find two switches in the engine
compartment. One is a high pressure switch
and one is a low pressure switch. Each switch
can be adjusted to allow different pressures.
To adjust the button you first need to loosen
the grub screw at the back of the switch.
When the adjustment has been made, tighten
the grub screw.
Essentially you want to set the high pressure
switch to a level that optimises the screening
capacity of the drum and quality of screening
in the drum. If material is fed into the drum
from the feeder quicker than the material can
be screened then more pressure is required
to turn the drum as it will be heavier. You
want to set the high pressure switch to a level
that works best. The switch allows a pressure
between 20-200bar. Once this pressure is
reached the switch will send a signal to the
solenoid to slow the feeder down.