Copyright Pyroban Ltd. Issue 1 Page 6 of 32
Part number PM1083ENG
Components
The Gascheka duo system consists of the following major components.
Relay Unit
The Relay Unit is the wiring interface with the vehicle. Battery
power is fed into the Relay Unit to power the Gascheka duo
system. A volt free relay contact enables shutdown of the
vehicle. A second volt free relay contact facilitates a time
delayed shutdown for applications where the vehicle must be
brought to a controlled stop before the vehicle is shut down.
Control Unit
The Control Unit receives the gas sensing head signal and
controls the shutdown function of the Relay Unit. The Control
Unit also displays the various warning and shutdown modes to
the operator.
Pellistor gas detection head
The Gas Detection Head (Infrared or Pellistor) monitors the
concentration of flammable gas and signals the Control Unit.
Before each use the system performs mandatory start up
diagnostic test, during which the Control Unit introduces a
sample of calibration and test gas into the Gas Sensing Head.
This check process confirms the correct operation of the Gas
Sensing Head before each use of the vehicle.
If this test is failed, the equipment will not be able to operate.
Infrared gas detection head
