Description components
10
Da
te of
is
sue :
Sept
ember
2012
Automatic Greasing System
TriPlus Trailer
F212157R02
2.3
The intigrated control and monitoring unit
The control and monitoring unit iniates and controls the greasing cycles of the greasing system. All
required system and program parameters, such as at which intervals (number of brake commands
or pulses) grease should be applied and with what quanties, are laid down in the control unit. The
control unit monitors the performance of various components of the greasing system, and stores
and reports the malfunction it detects.
The control unit can be programmed or read-out with a GINA (
G
roeneveld tester for
IN
stallation
and
A
nalysis) (see Figure 2.2)
Figure 2.2
Connecting the GINA to the trailer pump
2.4
The plunger pump
The electric motor drives the plunger pump through a reduction gear. The plunger pump comprises
a drive shaft with excentric, a cylinder with piston, and a non-return valve. The excentric moves the
piston back and forth, once every revolution of the drive shaft. During the return stroke of the
piston, grease is sucked from the reservoir into the cylinder (through an opening in the cylinder
wall). During the forward stroke of the piston, the grease is pressed, via the non-return valve,
towards the output port(s) of the pump unit. The amount of grease supplied during each stroke
(revolutions of the drive shaft) depends on the (fixed) diameter of the cylinder and the stroke
length of the piston.