TS Industrie Saelen GS/VIPER50DS, Operating Manual

Page: 46 / 66

GS/ VIPER 50DS
HYDRAULIC COUPLING
If the engine is blocked when the machine is started (e.g. by a branch if the
machine was not correctly emptied at the last stop), the switch does not
work. The coupling is not rotating, the oil temperatur in the coupling
quickly rises and is ejected through the green cap that melts at tempera-
tures over 180°C.
In order to prevent this inconvenience, an additional safety has
been provided (see previous page).
FUNCTIONING OF THE HYDRAU-
LIC COUPLING
The Westcar coupling is a hydrodynamic coupling
according to Föttinger’s principle. It mainly consists
of two paddle wheels (pump and turbine) and an
external housing. The two paddle wheels are
supported by bearings. The power is transmitted
without hardly any wear because there is no
mechanical contact between the elements. The
coupling contains a constant quantity of liquid. The
mecanical energy of the drive engine is transformed
into kinetic energy in the connected wheel pump. This kinetic energy is again transformed into
mechanical energy in the turbine wheel.
If the safety
( 2 ) is activated,
always investigate the cause of the
problem. Never attempt the start the engine several times. The
temperature inside the coupling will continue to rise and
eventually the green cap will melt (180°). The oil is then ejected.
(This fuse cannot be reset and must be replaced).
D E S C R I P T I O N A N D
M A N I P U L A T I O N
THERMAL SAFETY 145° and 180°
In case of abnormal overheating of the internal
oil of the coupling (above 140°C), the thermal
fuse (
2
) releases an axis that moves the handle
(
3
) of the switch of the thermal safety (
1
) . This
switch interrupts the fuel supply which stops the
engine. To restart, the thermal fuse (2) must be
replaced and the handle (3) must return to its ori-
ginal position.