Components and Assembly
8
the abrasive is facing the center of the machine. Two small grooves (K) indicate the loca
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tion of the control cage opening. Turning the control cage counterclockwise will move the
blast pattern to the right, and turning it clockwise will move the blast pattern to the left.
THE SEPARATOR (FIGURE 5)
The separator (1) is mounted to the end of the rebound plenum. The deflector (5) and
baffle plate (4) will stop the reflected abrasive. The filter connected to the hose connec
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tor (8) will generate an appropriate air flow within the separator so that dust is separated
from abrasive. The abrasive drops back to the storage where it must pass through a wire
mesh tray (6) .This tray is fitted to prevent any coarse contaminants from getting into the
blast wheel. The tray can be removed from the side for cleaning purposes. Out of this
storage section the abrasive runs via a magnetic control valve and feed spout (2) into the
blast wheel.The valve itself is controlled by the control cable (7).
THE TRACTION DRIVE (FIGURE 6)
This machine has a 0.25 kW gear motor. The power transmission works by a chain drive.
The wheel (1) and sprockets (5 and 6) of the chain-drive are firmly connected by the
chain. The lower sprocket (6) drives the drive shaft and the driving wheel (2) in working
direction V. The driving wheel (2) transfers the force of the gear motor only in working
direction V, therefore the machine can be pushed forward manually faster than the driv
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ing speed chosen with the potentiometer.
THE BASE SEALS (FIGURE 7)
On the front and side of the machine are magnetic seals (1) surrounded by brush seals
(2). On the rear is a drag seal (3) which slides over the surface and hinders abrasive from
getting out of the blast area.
The correct setting of the magnetic seals is 5/16”-1/2” (8-12 mm) over the floor, depend
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ing on the application. The adjustment is done by screws on the traction drive and the
rear (4).
ABRASIVE MEDIA
Selection of abrasive is very important. The use of incorrect abrasive increases wear on
the machine. Contact NFE customer service regarding the best abrasive to use.
To put abrasive into the machine, complete the following:
1.
Remove lid from separator.
2.
Ensure tray is in place.
3.
Fill abrasive, distributed equally, up to the bottom of the mesh on the tray.
4.
Check occasional function of the deflector shutter.
FIG. 5
FIG. 6
FIG. 7