Copyright © 2021 Axxiom Manufacturing, Inc.
11.2 Malfunction with Deadman Lever in the “On” Position
11.2.1. Air blasts with no abrasive
(1) Check abrasive level in blast vessel.
(2) MV3 Valve (#14) adjustment knob is in the closed position.
(3) Trash plugging opening from tank to MV3 Valve (#14). See Section 11.3.
(4) Abrasive flow problems. See Section 11.3.
(5) Blast vessel leak (popup or handway) reduces pressure slowing abrasive flow.
11.2.2. Abrasive choking out of blast hose with low blast air pressure
(1) MV3 Valve (#14) abrasive adjustment knob is open too far.
(2) Choke valve (#13) is partially closed causes differential pressure increases abrasive flow.
(3) Low air compressor output cfm (unit may cycle on and off). See Section 3.0.
11.2.3. Reduced Pressure at the nozzle (with or without abrasive flow)
(1) Low air compressor output CFM. See Section 3.0 to determine air requirements.
(2) Air supply hose to blaster is too small. See Section 3.0.
(3) MV3 Valve abrasive adjustment knob (#14) is open too far.
(4) Check for leaks in blast vessel (popup or handway) or control piping.
(5) Choke valve (#13) is partially closed.
(6) Trash may be partially plugging the nozzle orifice (#11). Release deadman and allow the air
pressure in the blast hose (#10) to dissipate. Close the air inlet ball valve (#3) then remove
the blast nozzle (#11) and clear blockage.
Do Not aim the blast nozzle towards yourself or any person. A system malfunction or a
blocked blast nozzle that clears can trigger accidental start up resulting in injury to
personnel.
11.2.4. Blast is slow to turn on or will not turn on when deadman lever is pressed down.
(1) Check twinline hose connections (#18 & #19) to see if they are connected properly.
(2) Electric deadman control valve (#20) stuck in exhaust position (air leaks from breather #35).
(3) 1/4" strainer (#23) blocked; restricts air flow to deadman (MV3 electric only).
(4) Twinline control hoses (#15) are blocked.
(5) Cartridge in deadman valve (#12) is blocked.
(6) Low air compressor output CFM (unit may cycle on and off). See Section 3.0.
(7) Air leaks in twinline hose (#15) from the deadman valve (#12).
(8) Trash blocking the blast nozzle orifice (#11). Release deadman and allow the air pressure in
the blast hose (#10) to dissipate. Close the air inlet ball valve (#3) then remove the blast
nozzle (#11) and clear blockage.
Do Not aim the blast nozzle towards yourself or any person. A system malfunction or a
blocked blast nozzle that clears can trigger accidental start up resulting in injury to
personnel.
To Next Page
Loading...
