BNP DOUBLE 65 and DOUBLE 220 - DUAL STATION SUCTION CABINET Page 11
© 2016 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 22963 Rev. D, 07/16
Figure
14
5.3
Media/Air Mixture, Figure 15
NOTE: Each metering valve must be adjusted
independently.
5.3.1
Check the media stream for correct media/air
mixture; media flow should be smooth and appear as a
light mist coming from the nozzle.
5.3.2
If media does not flow smoothly, loosen the
locking nut and adjust the metering screw until the upper
holes in the metering stem are closed-off, and the lower
holes are fully open, as shown in Figure 15. This
adjustment is a starting point.
Figure
15
5.3.3
If pulsation occurs in the media hose, either media
is damp and caked, or not enough air is entering the media
stream. While blasting, loosen the locking nut and slowly
turn the adjusting screw out (counterclockwise when
viewed from the top) until media flows smoothly. Tighten
the locking nut finger-tight to maintain the setting.
5.3.4
If media flow is too light, decrease air in the
mixture by turning the metering screw in (clockwise when
viewed from the top) covering more of the holes so less air
enters the media hose. Tighten the locking nut finger-tight
to maintain the setting.
5.4
Reclaimer Static Pressure
5.4.1
Correct static pressure varies with size of
reclaimer and the size, weight and type of media.
5.4.2
Adjust static pressure by opening (handle inline
with air flow) or closing (handle perpendicular to air flow)
the dust collector ventilation damper. Refer to the dust
collector owner’s manual, the damper is located on the
inlet on CDC-1 dust collectors, and on the exhauster
outlet on RPC and RPH dust collectors. If the damper is
not opened far enough, the reclaimer will not remove
fines, resulting in dusty media, poor visibility, and possible
media blockage in the conveying hose. If the damper is
opened too far, it may cause carryover (usable media
carried into the dust collector) and result in excessive
media consumption. Open only as far as necessary to
obtain a balance of dust removal without media carryover.
5.4.3
A manometer is useful when adjusting or
monitoring static pressure. The manometer kit is listed
under Optional Accessories in Section 9.1. Refer to
Section 5.8 for manometer operation. The following are
static pressure starting points for given media. Static
pressure may need to be lower with finer media, higher
with coarser media. . Run the media through several
blast cycles allowing the reclaimer to function with these
settings. Inspect the media in the reclaimer and fines in
the dust collector as noted in Paragraph 5.4.2. Continue
adjusting static pressure until optimum media cleaning
without carryover is attained.
Glass Bead No. 4 to 7 ................................... 3" to 3-1/2"
Glass Bead No. 8 to 13 ..................................... 2-1/2 - 3"
Alox. 60 & coarser ................................................... 4 - 5"
Alox. 80 & finer .................................................. 2-1/2 - 3"
Steel Grit .................................................................. 6 - 7"
5.4.4
If the damper has been adjusted and carryover
or excessive dust in the media continues to be a
problem, adjust the Vortex tube per Section 5.5.
5.5
Externally-Adjustable Vortex Cylinder
NOTE: The externally adjustable vortex is an option
when the cabinet is provided with a CDC-1 Dust
collector. The vortex is standard with reclaimers when
the cabinet is provided from the factory with an RPC or
RPH dust collector.
NOTE: The vortex cylinder fine-tunes media separation.
Before adjusting the cylinder, adjust the damper on the
dust collector to increase or decrease static pressure
per Section 5.4. Once the damper is adjusted, adjust the
cylinder.
5.5.1
The vortex cylinder is located atop the reclaimer
where the flex hose connects. Adjustments are made by
loosening the handle's tensioning knob and moving the
handle to achieve the correct setting. When the correct
setting is established, tighten the locking knob to prevent
movement. Start with the lever slightly to the right (about
one o’clock position as shown in Figure 16) of the
vertical position.
Adjusting Screw
Lower holes fully open
Locking nut
Upper holes
fully closed
Lock Nut
Air Jet
3-1/2 to 4 threads between
lock nut and air
jet hex
