A UTO P ULSE M ODE :
This mode is set up to automatically control the pulsing depending upon how much dirt is entrenched
upon the filters. This is determined by a differential pressure sensor measuring the pressure loss
across the cartridge filters. This mode is automatically active when entering the mode.
The controller wil l pulse when the unit has shut down if the “Shut Down Pulse Limit” (Shutdwn delP) is
reached while the unit is running. During a shut down pulse, the controller will pulse the valves for the
specified number of cycles or “Shut Down Pulse Cycles” (ShutDown Pls #). If the controller is going to
perform a shut down pulse, the display will read “On Stop” after “Automatic Mode:”
The controller will pulse while the unit is running if the “Run Pulse Limit” (Run Pls delP) is reached
while the unit is running. During a running pulse, the valves will continue to pulse until the pressure
differential has dropped below the “Run Pulse Limit” setting. If the controller is performing a running
pulse, the display will read “RunPulse” after “Automatic Mode:” If the controlle r performs a running
pulse, it will also perform a shutdown pulse.
If the “Alarm Limit” (Alarm delP) is reached while the unit is running, the controller’s front display will
begin to flash. This indicates that the filters are significantly clogged and may need to be changed.
T IMED P ULSE M ODE :
This mode will pulse the valves one at a time in sequence until the timer has expired. The Timer is in
minutes.
To change the timer, press the ‘OK’ button. The number of minutes will begin to flash. Use the ‘+’ and
‘ - ’ buttons to increase and decrease the pulsing time respectively. Press the ‘OK’ button again to set
the new time. Press the ‘A’ button to begin pulsing. The pulsing can stopped by pressing the ‘B’
Button.
Copyright © Clean Air Industries , Inc.
Liberty WeldCell User Manual, August 2023
Page 41 of 66
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