Operation manual GMK-A
Page 14 of 35
B0887
4. Functional description
4.1 Drive
The unit is driven by a DC motor, which is laterally screwed on the pump casing. The motor
is energised by externally switching the voltage supply. For that purpose, an external con-
troller is required.
4.2 Operation
The rotational movement of an electric motor
1
is converted via a swash plate
2
into a lifting
movement of the delivery pistons
3
and
4
. In the suction position (piston
4
) the medium is
drawn in from the reservoir
5
, in the pressure position (piston
3
) the medium is pumped to-
wards the outlet.
At flow the medium flows through the integrated non-return valve
6
to the outlet. Lubricant
lines can be connected with the optional push-in fitting
7
. An empty reservoir
5
can be refilled
via the grease nipple
8
.