Schmidt AmphiBlast 120, Operation And Maintenance Manual

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Copyright © 2019 Axxiom Manufacturing, Inc.
5.22 Water On/Off Palm Button Control Valve
The water on/off palm button control valve (#48) is used to change between wet blast and dry
blast. Pull the palm button out (“ON” position) for wet blast and push the palm button in (“OFF
position) for dry blast. When the water on/off palm button control valve (#48) is in the “OFF”
position, it stops the air signal to the water shut-off valve (#52) preventing the water from
turning on. See drawing in Section 9.12.
Wet blasting greatly reduces air borne dust but the use of a respirator is still required during
blast operation. All operators and personnel in the vicinity must wear OSHA approved
respiratory protection during the operation of this equipment See Sections 3.9, 3.10, and OSHA
29 CFR 1910.134
5.23 Water Control Valve
The water control valve (#52) is a normally closed valve that opens to inject water into the blast
stream. The water control valve (#52) opens when it receives air to its signal port. This happens
when the deadman lever (#12) is pressed down which opens the blast control valve (#20)
sending an air signal to the water shut-off valve (#52). When the deadman lever is released, the
air signal from the blast control valve (#20) vents and the water shut-off valve (#52) spring
closes to stop the flow of water. See drawing in Section 9.7.
5.24 Injection Module
The injection module (#32) is where water is introduced into the blast stream. The injection
module holds the spray nozzle (#33) in the optimum position to wet the abrasive in the blast
stream as it exits the Thompson® Valve (#14).
CRITICAL: The injection module (#32) and the spray nozzle (#33) must be orientated
correctly to work properly. See drawings in Section 9.10.
CRITICAL: To function properly, a full port threaded coupling (#27) is required on the outlet
of the injection module (#32). If the blast hose assembly (#10) being used does not have a full
port hose coupling (#26), install the provided 1-1/2” x 3’ lg. adapter hose (#73) between the full
port threaded coupling (#27) and the blast hose assembly (#10).
5.25 Multiple Outlet Blast System
The AmphiBlast™ can be purchased with up to 4-outlets. Consult Axxiom Manufacturing or an
Authorized Schmidt® distributor.
Each blast outlet of multiple outlet blast vessels operate as detailed in the sections of this
manual.