PULSAR
®
IX SUCTION BLAST CABINET
Page 17
© 2019 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 23425, Rev. C, 07/19
5.7.2
When pulsing does not adequately clean the
cartridges, increase pulse pressure in increments of 5
psi to 10 psi until the maximum of 90 psi is reached. As
dust cakes on the cartridges, differential pressure
increases. Using a gauge to measure the differential
pressure is a good way to tell if the cartridges are
heavily caked.
5.7.3
When the maximum pulse pressure of 90 psi is
attained, and additional pulsing as described in Section
5.8 does not decrease differential pressure or increase
visibility, replace the cartridges, per Section 7.8.
5.8
Pulse-Sequence Control Panel and Timer
5.8.1
The toggle switch (sequence switch) mounted on
the sequence control-panel cover, enables or disables
the timing sequence. When the switch is ON, the pulse
sequence automatically starts when the dust-collector
exhauster is started. If the switch is OFF, the pulse
sequence will not occur. The switch should be left OFF
(no pulse) until cartridges are seasoned, per Section 7.9.
5.8.2
The timer is factory set at 40 seconds OFF and
15/100 of a second ON. Every 40 seconds the cartridges
are pulsed.
5.8.3
As the cartridges cake with dust, the pulse may
not clean them well enough to bring the differential-
pressure gauge below the recommended changeover of
4" WC (4 inches of water column). A constant reading
higher than 4" is an indication that more frequent pulse
cycles or higher pressure are needed. When differential
pressure remains greater than 4", adjust the OFF time
setting by half and lower pulse pressure to 70 psi. DO
NOT ADJUST ON TIME. Increasing on time will consume
more air, but will NOT increase cleaning efficiency.
5.8.4
When the frequency of the pulse cycle does not
lower the differential pressure to less than 4", or a
decrease in visibility or recovery is noted, increase pulse
pressure in increments of 5 psi until the maximum of 90
psi is reached.
5.8.5
When the frequency of the pulse cycles and
higher pulse pressure does not lower the differential
pressure below the changeover pressure of 4", the filter
cartridges should be replaced, per Section 7.8.
5.9
Cabinet Air-Inlet Damper
5.9.1
Once the inlet damper is initially set, per Section
2.9, it seldom requires readjustment. The initial setting
produces approximately .5
to .75
of static pressure in
the cabinet enclosure.
Do not confuse cabinet static
pressure with reclaimer static pressure, which is
controlled by the outlet damper, per Section 5.4.
Reclaimer pressure must be set before cabinet
pressure.
In rare circumstances, cabinet pressure may
need to be slightly higher or lower.
5.9.2
A manometer (as noted in Section 5.10 and
listed in Section 9.1.1) is the most accurate method of
monitoring and adjusting cabinet pressure. Following the
instructions packed with the manometer, start the
exhauster and insert the needle into a glove, and adjust
pressure using the inlet damper. Open the damper
further to decrease static pressure or close it further to
increase pressure.
5.9.3
If a manometer is not available, use the gloves
as an indicator. With the exhauster ON, the gloves
should be inflated, but not elevated off the grate.
5.10
Optional Manometer
NOTE: These instructions show several methods of
taking static pressure readings (negative pressure) on
Pulsar reclaimers, by using a flexible tube manometer.
Use the method best suited for the application. The
instruction explains the processes for taking periodic
readings and shows how to permanently install the
manometer for taking frequent readings. A fitting should
be installed when the manometer installation is
permanent, refer to Paragraph 5.10.6.3. Use silicone or
other sealant around the fitting to prevent leaks. The
fitting should be capable of being capped when the
manometer tube is removed. Capping the fitting
prevents leaks that alter the reclaimer’s separation
efficiency. Taking readings at different locations could
produce different readings. Static pressure readings at
the door are generally .5" to 1" lower than readings
taken above the reclaimer. The readings are reference
points, so readings should be taken using the same
method each time the reading is taken.
5.10.1
Refer to directions packed with the manometer
for preparation and operating instructions for the
manometer.
5.10.2
Connect one end of the 3/16" ID tubing to one of
the tubing connectors (elbow) at the top of the
manometer by pushing it over the barbed adaptor.
5.10.3
Leave the needle protector on the needle and
insert the needle into the other end of the tubing. The
ends of the tubing must fit tight on the manometer and
needle; leaks will cause inaccurate readings.
5.10.4
Open both manometer valves (elbows) per
manometer instructions.
5.10.5
Magnets on the manometer hold it in position on
the reclaimer or dust-collector body. The manometer
must be vertical so the fluid is level on both sides.
