Automatic Greasing System
TriPlus Trailer
Description components
11
Date of
is
sue :
Sept
e
m
ber
2
012
F212157R02
2.5
Safety and control features
2.5.1
Maximum grease pressure
A relief valve (fitted with an electrical contact) is installed in the grease channel between the
plunger pump and the output port. This relief valve will start to lead the grease back to the
reservoir if the maximum grease pressure is exceeded during the pump phase of a greasing cycle.
The grease pressure may become too high, for example, when one of the grease lines to the grease
points has become blocked, or when the viscosity of the grease has become too high (at low
temperature).
2.5.2
Minimum grease-level in the reservoir
A minimum-level switch is installed in the grease reservoir. If the grease reaches its minimum level,
the control unit will process, store and report the occurrence of that condition.
2.5.3
Defective wiring and short-circuits
Open-loads (interruptions) in the wiring to the sensors, minimum-level switch, relief valve, electric
motor and external signalling devices (e.g. buzzer or signal light) will be detected and processed by
the control unit. Short-circuits in the wiring or components will also be noticed by the control unit.