Schmidt ACS 1200, Operation And Maintenance Manual

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38 Copyright © 2020 Axxiom Manufacturing, Inc.
6.2 AirPrep System Depressurizing Procedure (Blowdown)
6.2.1. Close the air compressor outlet ball valve (#44, provided by user). See Figure 6.2.
The air compressor ball valve is not part of the AirPrep System and is not provided with the
unit. It is the responsibility of the user to verify that an air compressor outlet ball valve is
installed so the AirPrep System can be isolated from the air compressor.
6.2.2. Close all the AirPrep System air outlet ball valve(s) (#45, provided by user).
The air outlet ball valve(s) are not provided with most AirPrep Systems. It is the
responsibility of the user to install outlet ball valve(s) so air pressure can be isolated from
other equipment. See Section 5.13.
6.2.3. Depressurize all equipment connected to the AirPrep System outlet(s) following the
manufacturer’s procedures. This will protect the AirPrep System from backflow of debris.
When depressurizing equipment connected to the AirPrep system ensure that air is not
trapped in the air supply hoses.
6.2.4.
Leave the AirPrep System air inlet ball valve open during this step. This will allow the air
pressure in the air supply hose to vent during the blowdown process in step 6.2.5 below.
6.2.5. Slowly open the drain/blowdown ball valve (#11). As the blowdown ball valve (#11) is
opened air pressure inside will exhaust out and depressurize the separator tank (#12).
Airborne particles and loud noise hazards from blowdown exhaust air can cause serious
injury and loss of hearing. Wear approved eye and ear protection. Stay clear of blowdown
air path. DO NOT place hands or other body parts in the blowdown air path. Make sure no
personnel are in the blowdown air path.
The AirPrep System separator tank (#12) is completely depressurized when the
drain/blowdown ball valve (#11) is open with no airflow from it.