GMG-B Operation manual
Page 16 of 45
B0743
4.3 Stirring without delivery function
With the version "Stirring without and with supply" only.
In some modes of operation, improvement of lubricant quality and delivery behaviour require
additional stirring of the lubricant.
In the GMG-B pump unit, such stirring is enabled by means of a specially designed eccentric
drive.
When the eccentric shaft
3
rotates into the one direction of rotation, the pump elements are
working whilst the stirrer supplies them with lubricant.
As soon as the eccentric shaft
3
rotates in counter direction, the lubricant will be stirred while
the pump elements do not deliver.
The integrated control can be used to programme the operation and off-duty times for the
delivery with stirring and the stirring without delivery independently from each other.
Attention! If the pump has not been equipped with the function "Stirring without
and with supply", the medium is supplied every time the pump is
switched on!
Attention! The motor must not continuously run!
4.4 Pump elements
During suction stroke, the pressure spring
2.2
moves the delivery piston
2.1
against the
eccentric shaft
3
. In such motion, the lubricant being available in the reservoir
1
is drawn
through the suction hole
2.3
into the metering chamber
2.4
.
During delivery stroke, the eccentric shaft
3
displaces the delivery piston
2.1
. Thereby,
the suction hole
2.3
is closed and the lubricant volume being available in the metering
chamber
2.4
delivered through the check valve
2.5
to the outlet
2.6
.
The 0.04 cm³ delivery volume pump element is marked by a white ring
R
, whereas the
0,16 cm³ delivery volume pump element is marked by a black ring
R
.
Suction stroke:
Delivery stroke: