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3.4
3.4.1
3.5
3.6
3.7
3.8
Wear and tear on the blast chamber linings
Inside linings of the blast chamber
The blasting chamber and a large part of the reclaim chamber are protected by linings or
panels. The linings prevent the machine from destroying itself.
The panels must be replaced when the remaining thickness is below a third of the original
thickness at any one point. The side panels (see Inside linings of the blast chamber (No. 1)
and the upper panel (No. 3) in the blasting chamber are most affected by wear.
The thickness of these linings is 10 mm. If they are less than 6 mm, the panel / s must be
replaced. If the panels are replaced too late, the machine will blast a hole in the housing
wall after a very short time.
Changing the linings
On both sides of the shotblaster there is a cover (Nos. 81,83) that closes the blasting
chamber and the reclaim chamber..
f Remove the cover by loosening the screws. The interior side panels can now be easily
removed.
f At the top of the blast chamber there are three screws directly under the turbine mo-
tor. Loosen the lock nuts on the screws and unscrew them about 8 mm. The upper inner
panel can now be removed.
f If the cladding gets stuck, tap the sides lightly several times with a hammer. Jammed
blasting media and dust are loosened by the vibration.
f The inner linings on the front and back of the blast chamber and reclaim chamber are
each attached to the outside of the shotblaster with four or 5 threaded bolts.
f Remove the blast wheeel (see 3.3 Wear & tear on the blast wheel and shot cage).
f Loosen the attached nuts and remove the covers.
f The installation of the new linings is carried out in reverse order to the removal.
f The service life of the linings should be several hundred hours. Exact information is not
possible, because here too, the wear and tear depends on the use of the machine.
Wear & Tear on the shot stop in the separator
On the inside of the shot compartment lid in the separator (No. 275) is the shot stop (No.
271), which takes the energy of the high speed rebounding shot thus preventing the de-
struction of the shot compartment. This also prevents shot abrasive from being sucked out
of the machine. When filling the shot compartment with new abrasive, the shot stop should
be checked for wear every now and then. Changing the shot stop is easily done by remo-
ving three screws on the shot compartment lid.
Wear & Tear on the back skirt
The back skirt (Nos. 195 to 203) in the rear area of the blast opening serves to prevent the
shot from escaping, sealing the rear area and thus minimizing the loss of the metal balls.
If the towing tube (No. 195) is worn out, it must be replaced. Loosen the screws of the flat
iron that clamps the train. Replace the worn parts and reattach the train.
Wear & tear on the magnetic frame and the blast opening
Around the magnetic frame are several parts which must be regularly checked. The parts
are subject to wear & tear through the blasting action of the shot and through contact with
the floor. In the front and side areas are the magnetic frames. These are easily removed.
The left and right frames (Nos. 85 and 87) are screwed to the side cover. The front frame
(No. 205) is screwed to a bracket on the reclaim chamber. After removing the magnetic
frame, on the rear side of the opening is the retaining plate for the backskirt (No. 197). The
back skirt, mentioned in chapter 3.7, is screwed to this part.
Wear & tear happens mainly to this part if it is in contact with the floor. As previously menti-
oned, it is important to check all parts regularly. In doing so, it is not necessary to unscrew
the magnetic frame, just place the machine carefully on it's side and check for wear & tear.
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