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Dosers with one outlet
The doser with two outlets is modified to doser with one outlet by removing the disk valve
and the lubrication outlet connection and replacing them with blocking plug (pos. 7).
During normal sequential operation, doser with one outlet feeds the lubricant in turns to
lubrication outlet connection and to one of the main lines.
The pressure in the line 1 increases during pressurization and the disk valve moves to its
extreme position, whereupon the lubricant moves the piston. When the piston moves, it
pushes the lubricant to the line 2.
When the pumping starts again, the check valve directs the lubricant to line B, whereupon
the lubricant is directed to the opposite side of the piston. When the piston moves, it pushes
the lubricant through the check valve and further to the lubrication point P3.
The unfastening and fastening of the doser
Caution When changing the dosers, make sure that there is no pressure in the sys-
tem.
Adjustment
General
The lubricant dosage is adjusted by changing the movement of the piston with the adjusting
screw.
Doser adjustments
SMG-dosers are adjusted with an allen screw, which is located inside of a metal cover. The
other end of the allen screw is located in the dosage cylinder, so the adjustment affects di-
rect to the piston.
1. Make sure that there is no pressure in the lines.
2. Remove the metal cover.
3. Turn the allen screw to its closing position.
4. Look at the adjustment graph for the number of adjustment screw turns that corre-
spond to the desired lubrication dosage.
5. Turn the adjustment screw outward as many turns as instructed from the doser body.
6. Replace the cover.
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