7
If air volume is low and the contaminant is not being captured, adjustments will need to be
made. Consult your DIVERSITECH Distributor.
Apply compressed air to the manifold. Turn the reverse jet pulse control on. Apply power to
other auxiliary equipment as required.
COMMENTS REGARDING FILTER DIFFERENTIAL PRESSURE DURING OPERATION:
Depending on dust loading and Air-To-Cloth Ratio, reaching equilibrium of filter differential
pressure will vary from a few hours to many weeks. Low dust loading will normally develop 2-
3”w.g. with normal loading 3-6”w.g. and with high loading 6 - 8”w.g.
Low dust loading typically shows a steady level of differential pressure with very little
fluctuations once equilibrium is reached. By contrast, heavy loading can produce significant
“Ups and Downs” in operating differential pressure.
Do make immediate “Off-Time” time reductions on the timer board dial if significant increases
in operating differential pressure are discovered. However, if differential pressure drops, do
not be too quick to increase “Off-Time”, and then only in small steps.
NOTE:
A critical step in start up is to reach an acceptable operating equilibrium point. This must
be reached gradually in order to not damage the filters by blinding. While achieving
equilibrium, you want to clean the filters more often than required instead of not often
enough. Gradually and tentatively increase valve “Off Time” until equilibrium is reached.
Also, making notes and recording the results will help gage the effectiveness of various
DIVERSITECH filters and filter pretreatment. Should questions arise contact your
DIVERSITECH distributor.
Shutdown
Shutdown consists of shutting down the blower motor. With systems that include a “Cycle
Down” feature the reverse jet pulse cleaning will be activated. This will clean the filter
cartridges while the unit is off line, for a preset amount of time. Once the cleaning cycle is
complete the collector is ready to be energized when needed.
Caution:
Off line cleaning can cause pressure waves to feed back through the inlet of
the collector and the attached duct work. Precautions might be needed to
prevent dusting.
Maintenance Safety
Care with the design of DIVERSITECH collectors has minimized safety hazards for the
maintenance and production personnel.
Caution:
Personnel involved with the DIVERSITECH collector must be familiar with
the operation and the information in this manual.
