CAMCORP SWF with Externally Mounted Fan - Manual (Page 21)

TROUBLESHOOTING THE DUST COLLECTOR
I. Excessive pressure drop across filter bags
The differential pressure gauge or manometer on your dust collector should read
6” w.g. or less. Higher readings and/or steadily increasing readings are an
indication that the main airflow through the dust collector may be restricted, and
a potential process problem such as poor suction at duct pickup points may
exist. In extreme cases (over 17” w.g.) filter bags will be damaged. Check the
following:
A. Pressure Gauge
Check the differential pressure gauge or manometer and the tubing leading
to the dust collector for proper operation. Disconnect the lines at the gauge
or manometer and clear with compressed air. Look for loose fittings,
cracked, broken, or pinched tubing. Make sure the gauge is zeroed or that
the manometer is level, zeroed and contains the correct fluid.
B. Bags Loaded with Dust
If the cleaning system is not operating properly refer to the section titled
“Troubleshooting the Cleaning System”.
A condition known as blinding. If the dust is dry, see paragraph
1-4; if the dust is wet, see paragraphs 5 and 6.
1. Dust Not Discharging from the Hopper
Check hopper for over-loading or bridging across the dust discharge.
Correct by repairing dust discharge equipment, replacing with higher
capacity equipment, or installing hopper vibrators, etc. as required to
keep the hopper clear.
2. Air Flow too High
If the main airflow is too high to allow dust to drop off of the filter bags,
an excessive pressure drop across the dust collector will result and dust
will build up in the system. In many cases this high pressure drop in
turn leads to a reduction in the main air flow so that it is necessary to
remove the dust accumulation from the filter bags (and the rest of the
system) before measuring the main air flow volume.
9-1
CAMCORP, INC.
Phone: 913-831-0740 Fax: 913-831-9271