Description components
16
Da
te of
is
sue :
Sept
ember
2012
Automatic Greasing System
TriPlus Trailer
F212157R02
2.8.3
Principle of operation
Figure 2.6
Principle of operation
To operate, progressive distribution blocks need no other energy source than the grease pressure
supplied by the pump of the greasing system:
1.
The lubricant flows from the input port, via piston 3, through all segments to the left-hand
side of piston 1.
2.
Piston 1 is pushed to the right by the grease pressure. The grease at the right-hand side of
piston 1 is pressed to output port 1.
Because piston 1 has now been pushed to the right, the lubricant now flows, via piston 1,
from the central input channel to the left-hand side of piston 2.
3.
Piston 2 is then moves and supplies grease to output 2.
Because piston 2 has been pushed to the right, the lubricant now flows, via piston 2, to the
left-hand side of piston 3. Piston 3 is pushed to the right and supplies lubricant to output port
3.
4.
After piston 3 has been pushed to the right, the lubricant is pressed to the right-hand side of
piston 1. Piston 1 will move to the left and supply lubricant to output port 4.
5.
Afterwards piston 2 will also be pressed to the right and will supply lubricant to output port
5.
6.
Afterwards piston 3 will also be pressed to the right and will supply lubricant to output port
6.
7.
The distribution block then arrives back at its starting-off point, and the cycle will repeat as
long as there is pressure in the primary grease line.
REMARK
The description and illustration above assume there is a fixed starting-off point for the doser
segments in the distribution block. This is not so. The distribution block always continues from
where it left-off during the previous pump phase of the grease cycle.
WARNING
To be able to operate at all, a distribution block needs to have at least three doser segments.