Installation
45
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Reject Valve – The Reject Valve is attached to the pneumatic assembly and contains five ports
as follows:
o
Air Supply Input Port – The air supply from the dump valve is connected to the input.
o
Air Supply Output Port 1 – The air supply is fed to one side of a reject device. For
example when fitted to one side of a double acting air cylinder, the air drives a rod
attached to a nylon blade to push product off a conveyor into a reject bin.
o
Air Supply Output Port 2 - The air supply is fed to the other side of a reject device. For
example when fitted to the other side of a double acting air cylinder, the air drives a rod
attached to a nylon blade back to its start position.
o
Air Supply Dump Output Port 1 – When an emergency stop is activated, the air pressure
captured in one side of the reject device is dumped through this port. A suppressor is fitted
to the port to reduce any noise generated.
o
Air Supply Dump Output Port 2 – When an emergency stop is activated, the air pressure
captured in the other side of the reject device is dumped through this port. A suppressor is
fitted to the port to reduce any noise generated
In addition for fail-safe reasons an air pressure switch is fitted in order to alert the operator that the air
supply is low (below 40psi / 2.8 bar) and to shut down the system; generating a fault condition.
The system will be supplied with the pneumatic system already fitted and connected to the applicable
reject device.
Therefore the only actions required are to connect the air supply to the input side of the air regulator
using 10mm O/D tubing and set the air pressure using the regulator.
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