Main Brake - PRONAR T700 Operator's Manual

SECTION 3

3.2.3 MAIN BRAKE

The trailer is equipped with one of three types of working brake:
• Double conduit pneumatic system that can also be used as a single conduit
system, figure (3.4) (see section 5.1.2 for details on how to configure the system),
• double line pneumatic brake system with automatic regulator, figure (3.5),
• hydraulic brake system, figure (3.6).
The pneumatic or hydraulic brakes are activated from the tractor driver's cab by pressing on
the brake pedal. The function of the control valve (2) - figure (3.4), (3.5) is the operation of
the trailer's brakes simultaneously when tractor's brakes are applied. Furthermore, in case of
an inadvertent disconnection of the line between the trailer and the tractor, the control valve
will automatically activate trailer's brakes. Valve used in the system is equipped with a circuit
causing the brakes to be applied when trailer is disconnected from the tractor, compare with
figure (3.7). When compressed air line is connected to the tractor, the device automatically
applying the brakes now changes its position to allow normal brake operation.
3.7
Pronar T700