Operating Instructions 1-7D
Operation
6.1 Daily operation
Normal start-up and operation of the blast machine 1-7D is no
different from the procedure described in Chapter 5 "Initial operation".
Carry out blasting in parallel tracks in such a way that the dust hose
and electric cable do not become twisted.
Figure 6.1 shows the recommended blast paths leading away from the
filter unit.
Make sure that no vehicles, such as forklift trucks and other
equipment run over the electric cable and the dust hose.
The selection of the correct advancing speed of the blast machine is
important for a good blast result. In the case that the surface has
different characteristics (e.g. different hardness or different coating
thicknesses), a uniform blast result can be achieved by varying the
advancing speed during blast cleaning.
6.2 Information about advancing speed
The advancing speed depends on the material of the surface to be
blast cleaned and the desired profiling.
The correct advancing speed can be found out by observing the
blasted surface and varying the speed during the blast cleaning
process.
Slight profiling on concrete requires a higher speed than coarse
profiling.
Blasting on steel requires a very low advancing speed.
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