Set-Up Procedure - AIR SYSTEMS INTERNATIONAL ASI-1000 Manuel D'utilisation

Venturi style air blowers (air horns/movers) function by utilizing the Venturi principle in which a small volume of high ve-
locity air is forced through small openings (e.g. nozzle jets in the base of the blowers) in order to produce large volumes
of low velocity air (See: flow chart on page 3). A minimum ½" I.D. hose is recommended from the air supply source to the
side inlet connection on the blower base. The maximum inlet pressure for these units is 140 psi (9.7 bar).
Strict precautions must be taken when using Venturi style air blowers during applications that require gas freeing, tank en-
try, tank collapse prevention, or tank cleaning where volatile and/or toxic vapors are present. For informational purposes,
please consult the American Petroleum Institute's (API) publications 2015 and 2016 prior to performing any of the afore-
mentioned applications. These publications may be obtained from:
American Petroleum Institute
1220 L. St. NW
Washington, D.C. 20005
(202) 682-8000
Venturi air blowers have no moving parts, making them ideal for ven-
tilating hazardous areas. To remove static electricity, a grounding lug
is attached to the base of all of our Venturi air blower models. When in
use in a volatile atmosphere, connect a ground wire to discharge any
static electricity that may develop. The Venturi bases are made of a high
quality aluminum alloy. When aluminum is scraped across rusty steel, it
may create a smear which has potential to cause an incendiary spark.
Be sure to take precautions not drag the base along steel tanks or other
steel surfaces.
All performance ratings in this manual were measured on a unit supplied
with clean, filtered air, with nozzle jets of the proper diameter and with
no clogs in any manner. Precautionary steps should be taken to prevent
clogging of the nozzle jets. Periodic steam cleaning is recommended.
NOTE: Brass bolts and nuts should be used when securing the base
assembly to the blower if used in hazardous environments. Refer to the
API guidelines on proper grounding procedures.
When the Venturi air blower is used to supply fresh air in a confined space, the air supply compressor must use a
Grade-D air filtration package with sufficient capacity (cfm). A carbon monoxide monitor with alarm should be installed
inline. Consult factory for details: 1-800-866-8100.
1. Install desired inlet fitting no less than ½" in diameter.
2. Attach grounding wire between the base of the unit and the tank.
3. Tightly secure the air blower in place prior to turning on the air supply. Be sure not to restrict the
internal diameter of the air blower base as severe output flow loss will result.
4. Attach compressed air source.
Note: Venturi style air blowers are NOT meant to be used with ducting on the inlet or outlet as severe flow loss will occur.
2
Specifications
Precautionary Notes

Set-up Procedure

Install desired air inlet fiting (not
supplied) and attach ground wire
from ground lug to base.