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.