AAF International OptiFlo Cartridge Collector - Manual (Page 5)

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pressure port to the housing (dirty air) side, connect the gauge low
pressure port to the plenum (clean air) side. Both parts are located on
the side of the collector. Install the air pressure gauge in the coupling
on the compressed air reservoir.
8.0 Filter Installation (Figure 5)
1. Remove access covers and set aside in a safe place.
2. Rock used cartridges to break the gasket seal between
cartridges and tubesheet (back wall).
3. Slide used cartridges out of the collector and dispose of properly.
4. Clean access covers, wipe off gaskets. Inspect covers and
gaskets for damage. Replace any worn gaskets or damaged
access covers. It is highly recommended that all access
cover gaskets be replaced with each new filter cartridge
change out.
5. Inspect new cartridges for damage from shipping, storage, or
handling. Do not use damaged cartridges.
6. Slide new cartridges, gasket end first, onto the suspension
yoke. While installing, be careful that cartridges do not contact
the housing, handrails, open doors, or any other objects which
might damage or puncture the cartridge. On two deep cartridge
units, before the second cartridge is completely inside the
collector, position the access cover against the end of the
cartridge. Push the cartridge with access cover into the collector.
If any resistance is felt as the second cartridge is pushed,
remove the access cover and check for obstructions. Pull the
second cartridge out far enough to reposition the access cover
and reinsert. Tighten the handle on the access cover. It is
important to ensure the (4) guide tabs are correctly positioned
inside the door opening to ensure sealing the door against
the unit.
Hand tighten only—do not use a wrench.
WARNING: To avoid permanent damage to the solid state control,
do not:
1. Connect 120v to the “PS” terminals.
2. Connect 120v to any of the “Output” terminals.
3. Connect an “Output” terminal to ground. The fuse on the panel
does not protect from a direct short.
Check to be sure the program wire (top right of timer panel as shown)
is connected to the correct program pin. To do this, make sure that
the program wire/pin matches the wiring diagram. Power should be
supplied to the solid state timer board across terminals L1 and L2 as
shown on the connection diagram. When the power is energized, the
“Power On” light should illuminate and the unit should start pulsing
within the time limit set by the “off timer” timer. With the demand pulse
option, the pressure switch settings (both knobs) must be ‘zero’ to
start pulsing. The collector should not be allowed to pulse for any
extended time without compressed air being supplied to the collector.
Operation without compressed air can damage the solenoid valves.
The pulse interval and duration are controlled by the solid-state timer.
The pulse interval is factory set at 30 seconds which is satisfactory
for most installations. However, since dust loads, media velocity and
other factors will vary from one installation to another, it may be
necessary to readjust the pulse interval to meet individual
requirements. The duration, or “on time” is pre-set at 100
milliseconds.
This duration should not be adjusted without consulting your
AAF International representative. Contact your AAF International
representative for assistance.
DCT Digital Pulse Controls are supplied with separate I.O.M. E-97
which is located inside the box. AAF control centers, complete with
motor starterd, are shipped separate. The I.O.M. and wiring
schematics are shipped in the box.
6.0 Compressed Air Connection
The OptiFlo dust collector requires dry compressed air (-40F
dewpoint, 90-100 psig) for cleaning. The timer circuit is factory pre-set
to pulse at a 30 second interval. This will require nominal compressed
air supplies as shown in the OptiFlo Brochure APC-1-102.
NOTE: Adverse system conditions could require a reduced pulse
interval which will increase compressed air usage.
The compressed air connection should be made at the top of the
air manifold on each module where a 1
1 ⁄
2
" NPT pipe connection
is supplied. There is also a connection at the bottom of the
manifold to attach a drain.
7.0 Gauge Installation
The magnehelic (pressure gauge) must be installed before initial start-
up. Using appropriate tubing and connectors, connect the gauge high
Figure 5
Access Cover - position against the end of the
second cartridge as you install. This will align
cartridges and prevent damage. Hand tighten only.
OptiFlo Replacement
Filter Cartridge
Access Covers - inspect for worn
gaskets or damaged covers when
replacing cartridges.
Suspension
Yoke - ensure
cartridges are
properly
aligned when
installing.