The fan heater transported to Vienna by fire investigators from the Ministry of the Interior was examined there in a laboratory and documented with photographs.
Overview of the front of the fan heater.
The open fan heater with unmistakable red residue in the area of the cable inlet, top left. The hydraulic oil on the train was red.
Detail with red oil residue and lint from the insulation wool, which was sucked into the heater.
Another detail: The two elongated black plastic plates were glued to the electrical system when the heater was installed, another technical manipulation of the device. These changes invalidated its safety certifications.