Dings Magnetic Group 2 PULLEY EDDY CURRENT SEPARATOR - Manual (Page 5)

EDDY CURRENT SEPARATOR
B ELT T RACKING A ND T ENSION
Belt tracking and tension should be checked at least every
three hours for the first two days of operation. After that,
check once a week.
To align the belt:
1) Adjustments are made at the take-up assembly
located at the opposite end from the eddy current
rotor assembly.
2) Start the belt only, with the belt at a slow speed.
Be ready to shut it off if the belt walks off
severely to one side.
3) Using caution around moving belt, begin tracking
the belt. Use an adjustable wrench to turn the
take-up in the desired direction. Make
adjustments 1/4 turn at a time. To move the belt to
the left, tighten the take-up on the right. To move
the belt to the right, tighten the take-up on the left.
4) Do not over-tighten the belt as the eddy current
has a ceramic covered fiberglass shell that could
be damaged by an over-tightened belt. The belt
only needs to be tight enough so that the drive
pulley does not slip and the belt stays tracked.
Minimum belt sag should be 2 inches. This is
measured at the bottom center of the belt.
5) Once the belt is tracked, increase speed to
normal operating speed and readjust belt
if necessary.
If the belt is difficult to track, see “Troubleshooting” tips on
page 8.
F EEDING T HE S EPARATOR
It is very important to load the belt as uniformly and as
lightly as possible. If large surges occur, nonferrous metal
will be under other material. This can weigh it down and
cause a decrease in its trajectory, which may result in the
piece not making it over the splitter and not being recov-
ered.
In most applications, you will get the best separation at
400 fpm. If you change the belt speed after you’ve adjusted
the splitter, you may need to move the splitter again.
A vibratory feeder can be used to level out surges and
provide a uniform feed to the eddy current separator. Use a
45
o slide chute between the end of the feed conveyor and the
eddy current belt. The slide chute will present the material
to the belt without impact or bouncing.
Special care must be taken when broken glass is present
in the material. The slide chute should be equipped with
sides that direct the material on to the belt without pushing
broken glass under the belt seals. If glass gets caught under
the belt seal, it may cause the belt to be cut.
A DJUSTING T HE S PLITTER
The splitter location determines what will be recovered as
nonferrous metal or nonmetallics.
To adjust the splitter (Fig. 9):
1) The conveyor belt should be running and the
magnetic rotor turned off. Use the selector
switch on the control panel.
2) To move the splitter, loosen the threaded
handle on the outside of the discharge housing.
3) Use the clear Lexan access doors to view
your adjustments. Move the splitter until the
trajectory of the burden at normal belt speed
is about1” short of the splitter. This should
result in the nonmetallics being discharged
into the proper chute.
Since the magnetic rotor was not turned on,
no separation took place. The material which
dropped through the discharge chute while
adjusting the splitter may include nonferrous
metal and will need to be run over the eddy
current separator again.
4) Turn on the magnetic rotor. Nonferrous metals
should now be repelled over the splitter into
the proper chute.
Note: If you increase or decrease the eddy current belt
speed, you will need to adjust the splitter again because the
trajectory path will have changed.
Figure 9 - Adjusting the Splitter.
START-UP ADJUSTMENTS
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