Manual Mode: Timed
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, go to Settings>Pulse Settings and then select “Timed Mode” from the drop
down. Enter the time(in minutes) . Press the ‘START’ button again to begin pulsing. The pulsing can
stopped by pressing the ‘ STOP ’ Button.
Manual Mode: Count
This mode will pulse the valves one at a time in sequence until for a set number of cycles. The
counter denotes the number of cycles.
Select ‘COUNT MODE’ from the drop down. The number of cycles will begin to flash. Use the ‘+’ and
‘ - ’ buttons to increase and decrease the amount of cycles respectively . Press the ‘START’ button
again to begin pulsing. The pulsing can stopped by pressing the ‘ STOP ’ Button.
Manual Mode: Vtest
This mode will pulse the desired valves one at a time upon command. Select ‘MANUAL MODE’ from
the drop down. The front panel displays what valve will be activated.
T o change the valve, press the ‘<’ or ‘>’ buttons to increase or decrease the valve number
respectively. Press the ‘ START ’ button to pulse the selected valve one time.
Optional Variable Frequency Drive (VFD)
A Variable Frequency Drive (VFD) can be ordered to operate the motors in place of the contactors
and overload. This device operates by varying the frequency used to drive the motor; this causes the
motor to run at a slower speed and shifts the blower curve. By bringing in the pressure from a
differential pressure sensor, the speed of the drive is correlated to the filter loading.
Soft Start
The use of a Variable Frequency Drive (VFD) allows the motor ramp up to speed rather than across
the line starting contactors. This eliminates starting amperage spikes as well as inertial effects of the
blower. In non-VFD systems, these spikes can be as high as eight times the full load amps.
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