Air Driven Air Amplifiers, AA-8, AA-15 & AA-30 • OM-15J
3
Air Inlet System
Models AA-8-C, AA-15-C or AA-30-C include an air
inlet filter 1/2” NPT, regulator, gauge and speed
control valve all rated at
150 psi maximum
.
These components are pre-plumbed per figure 1 to
provide unregulated inlet air from the drive inlet to the
pump section inlet.
Pump Section
If
nitrogen
is to be boosted, the pump inlet connecting
line from the air filter is removed. Nitrogen may then
be supplied directly to the pump inlet (not the drive
inlet) at up to 800 psi for model AA-8, 1500 psi for
model AA-15, 3000 psi for model AA-30. A particle filter at the pump inlet is recommended of suitable
working pressure such as Haskel model 28728.
Operation
The maximum outlet stall pressure can be limited by setting the drive regulator. However, operation with
less than 30 psi drive may result in unacceptably slow cycling. Consult distributor or factory on alternate
control for low drive pressures (16821 modification or air pilot switch).
Precise
final pressure regulation is best accomplished from a high pressure regulator installed
downstream.
Pumping Speed
The pumping speed or cycling speed of the amplifier may be controlled by the speed control valve. This
valve is also an on-off valve to stop the amplifier yet allow inlet air or nitrogen to flow straight through the
pump section to outlet to equalize before start up.
Starting the Amplifier - (per schematic figure 1)
1. Speed control valve should be closed. (Handle at 90° to valve)
2. Allow inlet air or nitrogen to equalize pressure through the pump section and to fill the entire outlet
system.
3. Select the approximate stall pressure desired to be added to the equalized pressure. Divide by
approximately 8, 15 or 30 (depending on model). Set this amount on the gauge of the drive air
regulator. (For long range reliability, it should be no less than 30 psi.)
4. Open speed control valve and allow amplifier to pressurize outlet system. It should stall at
approximately regulated pressure times model number. (AA-8 will be approximately drive psi x 7 plus
inlet psi).
5. Readjust regulator if necessary. If more precise, constant control of output pressure is desired,
provide high pressure downstream regulator.
