AEC Continuous Vacuum/Pressure Conveying Systems - Manual (Page 27)

Page 26 Single- and Dual-Blower Continuous Vacuum/Pressure Systems
4-3-3 Sheltering System Components
If the power unit, control unit, rotary valve, filter, and related equipment are
not installed inside the plant, provide a weather shed or other outbuilding to
shelter these components from the weather. You should provide such shelter
even with the NEMA 4 control option.
4-3-4 Installing the Vacuum and/or Pressure Units
1. Level and secure the vacuum and/or pressure units.
2. Check oil level in blower assembly.
4-3-5 Installing the Rotary Airlock/Cyclone Assembly
Each AEC cyclone separator comes complete with a throw-out cone for
efficient material to air separation and a rotary level indicator for a high level
cut-off.
An airlock is a precision piece of equipment operating with small internal
clearances. The airlock should be bolted to the discharge adapter supported
securely on a flat surface with sponge rubber gasket provided with the
equipment.
Though they are an integral part of a vacuum/pressure system, rotary airlocks
are specified separately to meet the exact requirements of the materials
conveyed. Refer to the separate guide the airlock manufacturer has included on
airlock installation and maintenance.
1. Level and secure the vacuum unit, pressure unit, and blow-through adapter
with stand to the floor using one half-inch ( 1 /
2
”) bolts.
2. Bolt the rotary airlock and motor assembly you specified to the blow-
through adapter, if not already done at the factory. Use the one eighth inch
(
1 /
8
”; about 3 mm) -thick composite gaskets provided.
3. Tighten the bolts evenly to avoid distortion of the flanges. Draw up snug—
do not over-tighten. Exerting twisting or pulling pressure on the housing, as
with poor installation of related components, causes damage, excessive
wear, and air leaks.
Note: Verify that the rotation of the airlock is toward the larger, square-cornered outlet
of the blow-through adapter. See Figure 6 on Page 33 for more information.
4. Install the shear protector on top of the rotary valve.