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7.1 Filling the Abrasive Blaster with Abrasive
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7.1.1. The Abrasive blaster must be completely depressurized before filling with abrasive.
Follow the depressurizing procedure in Section 6.2. Disable the blaster by closing the
air inlet ball valve (#3).
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.
7.1.2. Remove the vessel lid (#29) and screen (#30) to check that the popup (#5) has dropped
open. The open popup indicates that the blast vessel is depressurized. See Figure 7.1.
7.1.3. Fill the blaster with dry abrasive though the abrasive inlet (#6). Pass recycled abrasive
through the screen (#30) to remove trash. Do not over-fill the blast vessel. An excessive
amount of abrasive piled above the popup (#5) after the blast vessel is full may prevent
the popup from sealing properly.
Pinch point hazard. Vessel pressurization will close the popup. Keep hands and fingers
away from popup. Disconnect air supply prior to performing popup maintenance.
7.1.4. After completing all the pre-operation procedures in Sections 6.0 and 7.1 pressurize the
abrasive blast vessel per Section 7.2, and then check the popup for leaks. Periodically
check the popup for leaks thereafter.
Figure 7.1 – MV3 Valve Abrasive Blaster with pneumatic blast controls
7.0 Operating Instructions
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