6
Figure 1 shows the major components of the standard blast machine:
• Pot with
− remote control valve RMS-2000A (RMS 1500+500) or RMM-50A (item 2).
− muffler (item 5).
− moisture separator (item 4).
− media metering valve (item 3) manually or pneumatically operated.
− choke valve (item 7).
• Deadman handle (item 6) with twinline hose (item 11).
• Blast hose with nozzle holder and nozzle (item 8 and 9).
3.1.1 How the system works
When the blast machine is connected to an air supply (compressor), the airflow passes through the
moisture separator (item 4) to the remote control valve RMS-2000A or RMM-50A (item 2). When the
deadman handle (item 6) is depressed, the pop-up valve (item 10) seals off the filling port with the
pop-up gasket (item 12) and the blast pot (item 1) is pressurized. The abrasive metering valve (item 3)
controls the flow of abrasive into the air stream.
With the blast hose (item 8) the abrasive is guided to the nozzle (item 9). When the operator releases
the deadman handle or the pet cock is opened, the blast process stops and the pot is depressurized.
3.1.2 How the pneumatic remote control works
The remote control enables the operator to start or interrupt blasting from a remote position and is a
safety equipment to prevent accidents. Each blast machine must be equipped with remote
control!
The pneumatic remote control consists of a remote control valve RMS-2000A or RMM-50A (item
2), a deadman handle (item 6) and a twinline hose (item 11). The brown remote control hose guides
compressed air from the remote control valve to the deadman handle. When the deadman handle is
depressed, the air passes from the brown to the yellow hose and is guided back to the remote control
valve. The pot is pressurized and the blast process starts. When the deadman handle is released the
blast process stops (the pot is depressurized).
For a more detailed description how the remote control valve RMS-2000 (RMS 1500+500) or RMM-
50A works, read the included Owner’s manual.
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