Operating Manual
14
1300-87075-1A
7.0 Locking the Grinding Jar in the Clamp
Lock the Clamp Assembly before running the unit. It is essential that samples are securely locked into
the clamp assembly before operation.
The clamp locking knob is the most critical component of the Planetary Mill, as it must be carefully adjusted to
hold the jar firmly in place. The rotation motion of the clamp is extremely vigorous. The jar must be held securely
in the clamp during operation to prevent damage and leakage.
The clamp base has two different size pins, designed to specifically fit in the two holes on the bottom of the jar.
To place a jar in the clamp, loosed the locking tab on the threaded shaft, and unscrew the locking knob with a
few turns (counter-clockwise). Rotate the moveable arm clockwise (downward) unclasping it from the Y-cross bar,
lift the locking knob assembly upward as shown in Figure 11. When placing the jar in the clamp, make sure the
pins are fitting in the proper holes. Once the jar is seated in the clamp base it should not be able to twist.
To lock the jar in the clamp, lower the locking knob assembly, rotate the moveable arm counter-clockwise
(upward) to engage the arm opening into the Y-cross bar pin (Figure 12). Turn the locking knob clockwise to
secure the jar and tighten the locking tab by turning clockwise.
Figure 11.
Opening the Clamp
Figure 12.
Locking the Clamp
8.0 Balancing the Jar
8.1 Adjusting the counterweight
The counterweight is set at the manufacturing facility to balance the stainless steel 500 mL jar with eight 30 mm
stainless steel balls. Turning the knob (Figure 13) clockwise increases the counterweight. Furthermore, turning
the knob counter-clockwise decreases the counterweight.
Figure 13.
Counterweight
Figure 14.
Counterweight (top view)
