4.2 Optimizing Your Collector's Performance
Outlined below are some basic collector operating parameters for pulse jet collectors using elements with Non
Woven Spun Bond (all finishes) or Conventional Felted Media:
>
Pressure
>
Frequency (off time)
>
Duration (on time)
50 PSI - 80 PSI
20 seconds*
Maximum 200 milliseconds
Reservoir:
Cleaning Air:
Requires an unrestricted air supply at least the diameter of the blowpipes and needs to
be big enough for valveʼs demand. Ideal conditions will leave the reservoir at 85% of the
operating P
SI aft
er firing.
Needs to be clean and dry, which could be accomplished with an air dryer. In-line traps/
separators can catch a lot of problems in the air supply prior to getting to the collector.
*Pulse Frequency:
Frequency should be adjusted to balance the collector's delta P and should be monitored
Pulse Sequence:
Hopper:
Changing Filters
:
frequently during the first se
ven days aft
er start up. Pulsing frequency can never be any
faster than the reservoir recovery to operating PSI.
Needs to be staggered to maximize the distance between the newly cleaned row and the
next row to be pulsed.
Should not be used for storage. Evacuation equipment (rotary valves, screw conveyors,
etc.) should be sized to unload hopper before accumulation occurs. Units with slide gates
should be left open and equipped with drum adap ers.
To change your filters, push the red handle and the filter will drop about an inch. Install
the new filter, then pull the red handle and the filter will lift up in o position. Be
careful not to crush the new filter by putting too much tension on the clamp. If the new
filter doesnʼt seem to fit, you can adjust the metal plate the filter sits on by
loosening the nuts on the all-thread and then moving the plate up or down.
Use the following guide to program the Dwyer Timer Board:
1. Control panel power indicator light should be illuminated blue.
2. Press fan start button and allow the fan to come up to speed.
3. Turn on the “Filters” toggle switch. This will turn on the Dwyer Timer Board.
4. Once the timer board is on push the “Select” button on the timer, “Last Output” LED will light up.
5. Use the “Up” or “Down” button to adjust the number on the display to equal the total number of pulse valve
you have on your collector, then press the “Select” button and the “Time Off” LED will light up.
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