Owner`s manual

22
United Air Specialists, Inc.
Supra-Pulse FJH Series
Cartridge Dust Collector
Revised 02/02
5.2 CHECKLIST
Check the discharge of the blower assembly. Initially,
some dust may discharge from the blower assembly
as the filters are seasoned. This may last several
minutes after which the discharge air should remain
visibly clean.
Measure the total airflow and static pressure at the inlet
to the Supra-Blast unit. Adjust the blower outlet damper
for the desired airflow. Check to ensure that adequate
air is being drawn into each of the collection points of
the system. Adjust the individual dampers for each
operation to balance the system airflow. Recheck the
total system airflow and adjust the blower damper to
desired system airflow. This procedure may need to be
repeated several times until the entire system is within
system design airflow specifications.
Check the differential pressure reading across the dust
collector clean-to-dirty air sections. A normal differential
pressure drop reading is between 1"-6" w.g.
(25-152mmAq). At start-up, this reading is generally
in the 1"-3" w.g. (25-76mmAg) range. Please list the
reading here for future reference.
Initial dust collector differential pressure reading across
filters is ________ " w.g. or (________mmAg) on
_________ (date).
NOTE: If your system is controlled by the Supra-I.Q.
Diagnostics Panel, the yellow air flow alert light
may be illuminated. This is normal until the “Air
Flow Calibration” routine has been performed
at the Supra-I.Q. Diagnostics Panel. This must
be performed during start-up of your collection
system once all of the inlet(s) and duct work is
in place and the outlet damper (if required) is
opened 75%. Refer to the Supra-I.Q.
Installation and Operation Manual and perform
the “Code 4 - Air Flow Settings” steps.
5.3 CHECKING THE PULSE CLEANING
SYSTEM WITH YOUR CONTROLLER
Check the cleaning system for proper operation. The
Compressed air pressure should be between 90-
110PSIG (6.2 - 7.6BAR). The Supra-Clean, Supra-View
and Supra-I.Q. panels are factory set to pulse every 10
seconds. Refer to the Supra-Clean, Supra-View or
Supra-I.Q. Installation and Operation Manual to change
these initial settings. Check to ensure the pulse
(diaphragm) valves are “firing” at approximately 10-
second intervals and deliver a crisp sounding pulse to
each filter. The valves should not deliver a weak or
lingering pulse. To check the pulse sequence for proper
firing, perform the following:
• If your system is supplied with a Supra-Clean
timerboard (with Magnehelic or Photohelic Gage) or
Supra-View Panel, place the “Continuous Clean/PS”
switch on the timerboard to the “Continuous Clean”
position. The MOT AUX terminals at the timerboard
must have continuity for the pulsing to become
active. Energize the motor starter coil to close the
isolated auxiliary contact wired to the timerboard
MOT AUX terminals. Verify robust and consistent
pulse firing of each valve.
• If your system is supplied with a Supra-I.Q.
Diagnostics Panel, place the system in “Continuous
Clean” by entering Code 5. At the “SET MODE” state
enter “1” for Continuous cleaning. Terminals 1 and 2
at terminal strip P7 must have continuity for the
cleaning system to activate. This can be done by
placing a temporary jumper across 1 and 2 to
activate the cleaning sequence. Please allow 45
seconds after panel power up for pulsing to start as
the Supra-I.Q. cleaning mode(s) operate on a delay.
Verify robust and consistent pulse firing of each
valve. When test is complete, enter code 5 and at the
“SET MODE” state enter “2” for Autotune cleaning
mode.
5.4 OPERATING ADJUSTMENTS
Please confirm the type of pulse cleaning controller
delivered with your system. Your system was delivered
with one of the following types:
• Magnehelic Gage with Supra-Clean timerboard
• Photohelic Gage with Supra-Clean timerboard
• Supra-View Pulse Panel
• Supra-I.Q. Diagnostics Panel
NOTE: It is important that the compressed air pressure
in the manifold is above 90 PSIG immediately
prior to a pulse. If the delivery capability of your
compressed air source cannot return the
manifold pressure to above 90 PSIG during the
“Pulse Delay” (time between pulses) interval,
adjust the pulse delay at the timerboard or
Supra-I.Q. Panel and monitor the pressure
drop. A longer interval will raise the operating
differential pressure and a shorter will interval
will lower the operating differential pressure.
Allow sufficient time for the system to stabilize
after each adjustment before further
adjustment is made. Adjust until the desired
pressure differential is reached.