Blastrac 200VMB, Руководство по эксплуатации

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5.4 Switch off the machine
 Close the abrasive valve (#9).
 Switch off the blast motor (#2).
 Lower the machine to the ground or on a pallet.
 Switch the main switch on the electrobox too position “OFF” .
 Pull out the connector of the mains power supply of the electrobox.
 Switch off the dustcollector 200DC.
 Wait for standstill of all drives before any inspection or maintenance works are started.
 When transporting the machine with a crane or lift, use the spreader beam of the machine.
5.5 Operation
Carry out blasting in parallel tracks in such way that the dust hose and electric cables do not become twisted.
Make sure nothing can snag the dust hose or cables.
The selection of the correct advancing speed of the blast machine is important for a good blast cleaning 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.
The advancing speed depends on the material of the surface to be treated 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.
For blasting on steel surfaces this will be 1 meter in approximately 55 seconds.
For blasting on concrete surfaces this will be 1 meter in approximately 20 seconds.
5.6 The blast pattern
Abrasive leaving the blast wheel blades is not thrown in all directions. Scatter is restricted to an angle. This is
achieved through the use of a control cage which surrounds the impeller. The position of the window in the
control cage determines the blast pattern.
Correct adjustment of the control cage and thus of the blast pattern is the most important factor for optimum
working with the blast cleaning machine.
Incorrect adjustment of the control cage results in very high wear and premature blasting-through of the blast
wheel housing, as well as reduced blasting performance, uneven cleaning and a possible loss of the rebounce
energy of the abrasive.
Correct cage
position