This training stand has been assembled using original components from the Dual-Zone
Climatronic system used in the VW Golf 6. Everything is arranged as it would be
in the vehicle. The connections of all functionally relevant sensors and actuators,
as well as the control devices and components of the cooling circuit are original
connections exactly like those found in the vehicle.
This makes it possible
to work with the manufacturer‘s original documentation and circuit diagrams.
Most of the original components are easily accessible for this or have been exposed
to make them accessible. The on-board diagnostic interface (OBD) allows connection
of standard workshop diagnostics systems. This grants access to all fitted control
devices and guarantees options such as basic settings of actuators, actuator diagnostics
and measured value block exports. Another interface allows connection of up to 14
trainee measuring stations. This guarantees execution of measurement exercises when
working in larger groups and using the multimeter or oscilloscope to take measurements
and thereby determine the values and various signals. In addition, the system is
equipped with a heating circuit with an electric heating element. This circuit simulates
the engine cooling circuit. This makes it possible to generate realistic operating
conditions as a way of receiving measured values from the dualzone control system
for diagnostic purposes. Various components can be manipulated via an integrated
and lockable fault circuit with 11 practical faults to perform troubleshooting.
One pressure gauge for the high-pressure side and one for the low-pressure side
are used to show the pressures under various load conditions. In addition to this,
connections are provided for using maintenance stations.
The maintenance connections
allow climate control maintenance units to be connected. This makes it easy to demonstrate
and practice how to extract, clean, evacuate and fill the system with „R134a“
refrigerant. The air-conditioning compressor is powered by a 3.6 kW 400 V three-phase
AC motor and speed-controlled via a frequency inverter. The on-board electrical
system is powered via a stabilised 12 V 40 A switched mode power supply. Emissions-free
operation allows the unit to be used in training rooms.
For work on the refrigerant circuit of this system, proof
of the expertise according to the Chemicals Climate Protection Ordinance in connection
with the regulations no. 517/2014 and
no. 307/2008 (EU) is required.