AXXIOM Manufacturing, Inc. SCHMIDT, Руководство по эксплуатации и обслуживанию

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© 2013 Axxiom Manufacturing, Inc.
6.2 Mini Abrasive Blaster Depressurizing Procedure (Blowdown)
Do not leave the abrasive blaster pressurized during long periods of no usage. Undetected air
leaks can cause costly wear damage to the pressure vessel (i.e. at abrasive inlet and handways).
6.2.1. Mini Abrasive Blast System (See Figure 6.2)
A Mini abrasive blaster is a
pressurized system
; meaning that the blaster remains
pressurized when the deadman valve (#12) is released. The Mini abrasive blaster must
be manually depressurized as shown below.
6.2.1.1.
Close the air inlet ball valve (#3). The ball valve is closed when the handle is fully
turned to the position shown in Figure 6.2(a) (handle perpendicular to body). The
handle tab will bottom against the ball valve body in the closed position.
6.2.1.2. Slowly open the blowdown ball valve (#4). As the blowdown ball valve (#4) is
opened air pressure inside will exhaust and depressurize the blast vessel (#1).
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.
6.2.1.3. The Mini Abrasive blast vessel (#1) is completely depressurized when the air inlet
ball valve (#3) is closed and the blowdown ball valve (#4) is open with no airflow
from it. The popup head (#5) will fall open when the blast vessel is completely
depressurized.
When the popup valve opens after depressurizing, abrasive can be blown out of the
blast vessel and into the face and eyes of the operator. Wear OSHA approved safety
glasses. See Section 3.10.