S YSTEM C ONTROLLER - A UTOPULSE ™ C LEANING
S YSTEM
Clean Air Industries Brahm™ Collectors are controlled by a Clean Air AutoPulse ™ Controller. This controller manages the cleaning cycles of the filters, motor start / stop controls, and the Clean Air Economizer TM controls. Not all options are present on every machine.
Filter Cleaning Controls
The Clean Air AutoPulse ™ Controller has been implemented on Clean Air Industries Brahm ™ Collectors as a filter cleaning controller. The controller is connected to a differential pressure sensor
which measures the pressure drop across the filters. This pressure drop is displayed on the HMI
screen. The Pulse time on the valves is set internally and cannot be changed. The valves will open
and pulse for 0.2 seconds. There is a 20 second delay between the valve pulses. The valves will
pulse in sequence, alternating between the two valves until the all the pulsing cycles are finished. The
controller is set to pulse a full cycle so that all filters wear and unclog evenly. During pulsing, the
number of the valve which is being pulsed will flash on the lower line of the display for 0.2 seconds
while the valve is being pulsed.
Auto Mode:
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 will pulse when the unit has shut down if the “Shut Down Pulse Limit” (Shutdwn delP) is
reached while the unit is running. During a shutdown 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 shutdown pulse, the display will read “On Stop” after “Automatic Mode:”
The controller will pulse while the unit is running if the “Run Pulse Pressure” 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 performs a running pulse, it will also
perform a shutdown pulse.
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