IKA MF 10 basic - Manual (Page 20)

20
Commissioning
Make certain that the mill drive stands fi rmly on a
table. Comply with the ambient conditions given in
the technical data.
The collecting pan (Pos. A 19) is placed on its base
in such a way that the round magnets fi t into the
recess on the base.
Impact grinding mill:
Assembling the impact grinding head:
The ON/OFF switch Pos. A 13 must be set to zero
and the power supply plugs must have been dis-
connected out before beginning assembly of the
impact grinding head. First the three threaded
bolts Pos. P 5 (see fi g. 1) are screwed out to the
same height (distance between hexagon of the
bolt and the fl at surface on the grinding head is ap-
proximately 2mm, this corresponds to two turns).
Make sure that the fl ange piece on the drive and
on the head are clean and free of dust. Abrading
both fi tting parts with a slightly oiled rag facilita-
tes assembly. The adjustment spring must be in the
area of the opening (in the back wall of the mill
chamber). The head is now pushed onto the drive,
while making certain that the parts do not jam. The
threaded bolt ends must fi t into the drillings of the
transmission cover. Thus the head has be rotated
slightly in a clockwise direction. After the bolts are
fi tted in the head is turned until it is stopped by
the bolts and so that the head now stands upright.
Now close and lock the grinding chamber door
with the operating knob Pos. P10 (3 to 5 revolu-
tions are suffi cient). This ensures that the grinding
chamber is optimally aligned so that the door
can be easily openend and closed later. Now
the screw mountings are tightened with the fork
wrench provided. Make certain that the pins are
tightened toward the head.
Note: Tighten the pins evenly (see fi g. 3.1)!
Now the hammer rotor Pos. P 13 can be installed.
The rotor is pushed onto the drive shaft as shown
in Fig. 3, fastened with the disk Pos. P 11 and
the countersunk screw Pos. P 15. The counter-
sunk screw, P 15, is tightened with the Allen key
supplied, while the rotor is held with the face
spanner that is included in delivery. The spanner
is positioned so that the pins of the spanner are
inserted into the bore holes on the face of the
rotor. The disc must be turned so that the bore
hole in the rotor is accessible for the spanner pins.
Note: After tightening the cheese head screw
with the Allen key, turn the hammer rotor once
(360°). The rotor may not touch. Repeat assem-
bly if necessary.
Now the fi lter Pos. Z 1 that is suitable for the grin-
ding procedure can be inserted; to do so the fi l-
ter is pushed into the grinding chamber from the
front. The fi lter and the fi lter holder surface in the
grinding chamber must be free from dirt and dust.
Now the grinding chamber door can be closed
and locked with the operating knob Pos. P 10.
The screw mounting of the operating knob is
screwed in by pressing and twisting it into the
internal thread on the drive cover. The fi rst turns
are easy, if turning becomes diffi cult then the
door may be closed, but the safety switch is not
yet unlocked. Continue turning until stop (ap-
proximately two revolutions), only then is the sa-
fety switch unlocked and the mill ready to start.
Grinding operation with impact grinding mill:
The suitable fi lter is pushed in and the door is
locked before beginning the grinding procedure.
Afterwards a collecting pan is fastened to the di-
scharge cone (standard ground joint NS 29). Sui-
table containers are e.g. Erlenmeyer fl asks Pos.
Z 3, round-bottomed fl asks, test tubes made of
either glass or plastic. The containers are to be
secured with a fi xing clip Pos. Z 2 (see fi g. 1).
For heat sensitive materials or with ground ma-
terials that have a very high increase in volume
during cut up, it is advisable to use a twonecked
fl ask with a fi lter attached to its second (e.g. cot-
ton wool, etc...). The ground material is cooled
from the air fl ow and no excess pressure is crea-
ted. For very critical ground materials (very fi ne
powder after being cut up) the ground material
can also be sucked off by means of a commercial
vacuum cleaner with a suction tube adapted at
the discharge cone. The powder is then in the
vacuum cleaner bag where it can be removed for
further processing steps.
Note!