Owner’s Manual
Operating Instructions and Spare Parts Lists
Page 6 of 14
1.2A-28001-C05
Subject to modifications
LINCOLN GmbH & Co. KG • Postfach 1263 • D-69183 Walldorf • Tel +49 (6227) 33-0 • Fax +49 (6227) 33-259
Fig. 3
Description of Operation
Model VSG, VSL Metering Devices
Fig. 1
Fig. 4
1122a95
1124a95
1125a95
1123a95
Fig. 2
Stage 1
Pressurised lubricant is supplied to the metering device via
main line I. The control piston (1) starts moving in the direc-
tion of arrow A, displacing the lubricant in front of the control
piston into the relieved main line II.
Stage 2
When the control piston (1) uncovers the connecting passage
(2) lubricant is transferred to the right end of the dispensing
piston (3), thereby displacing it to the left in the direction of
arrow A.
The lubricant volume ahead of the dispensing piston is
transferred via the connection passage (4) to the lubrication
point. With the dispensing piston in its terminal position, the
pressure in main line I will continue to rise to reach the preset
change-over pressure of the two-line system. At this stage,
the change-over valve of the system operates to connect
main line I which has so far been under pressure to the
lubricant reservior of the lubrication pump and the lubricant in
main line I is depressurized.
Stage 3
At the same time the change-over valve connects main line II
to the lubrication pump, thus pressurizing the lubricant in this
main linc. The control piston (1) moves in the direction of
arrow B, displacing the lubricant ahead of the control piston
into the relieved main line I.
Stage 4
When the control piston (1) uncovers the connecting passage
(5) lubricant is transferred to the left end of the dispensing
piston (3) and displaces it to the right in the direction of arrow
B. The lubricant ahead of the dispensing piston (3) is trans-
ferred via the connecting passage (6) to the lubrication point.
With the dispensing piston (3) in its terminal position, the
pressure in main line II will continue to rise to reach the
preset change-over pressure of the two-line system. At this
stage, the change-over valve will once again cause a pressu-
re changing-over in main lines I and II and the cycle will be
repeated as described in stage 1.
