Fein GRIT GXC Manual De Instrucciones página 14

en
14
Move the grinding belt manually and observe, if it
moves off towards the left or right of the contact roller.
Adjust the guidance of the drive wheel on the belt
grinder such that the grinding belt runs centrally. The
exact calibration is carried out while the machine is run-
ning.
Switch the belt grinder on. Check if the contact pulley
rotates in the direction of the arrow.
Switch the belt grinder off again.
If the contact disc rotates in the opposite direc-
tion of the arrow, the motor's direction of rotation
must be changed by a qualified electrician.
Adjusting the guide rail (figures 3A+5).
Before any work on the machine itself, pull the
mains plug.
Loosen both screws (26) and adjust the clearance of the
guide rail to the brake wheel:
– Pipe diameter 10–12 mm: Adjustment according to
figure "1".
– Pipe diameter 12–100 mm: Adjustment according
to figure "2".
Tighten screws (26) again.
Adjusting the brake wheel (figure 3).
Before any work on the machine itself, pull the
mains plug.
Adjusting the parallelism.
Loosen star-knob bolt (12) and adjust the brake wheel
(17) with handle (13) in such a manner that it runs par-
allel to the contact disc when viewed from above. This
helps to achieve a uniform feed pressure and a uniform
grinding pattern. The optimal setting must be deter-
mined by practical testing.
Adjusting the incline.
Release the clamping lever (18) and adjust the brake
wheel (17) with the star-knob bolt (19) in such a man-
ner that is lightly inclined to the left with reference to
the workpiece.
The more the brake wheel is inclined, the higher
the feed speed. The optimal setting must be
determined by practical testing.
Setting the clearance between brake wheel,
workpiece and contact roller.
Loosen star-knob bolt (9).
Tilt the drive unit back with lever (16).
Place in the workpiece to be ground.
Tilt the drive unit toward the front again so that the
brake wheel faces against the workpiece.
Adjust the gap clearance (23) to 1 mm.
Tighten star-knob bolt (20) again.
Adjusting the feed pressure.
Adjust the feed pressure of the brake wheel against the
workpiece with crank (22):
– Turning in clockwise direction: High feed pressure.
– Turning in anticlockwise direction: Low feed pres-
sure.
Excessive feed pressure can lead to increased wear of
the brake wheel and the grinding belt!
Operating instructions.
Switching on and off.
Do not switch the machine on until all required
settings have been made. Make sure that no
workpiece is inserted in the machine.
Plug the plug of the cylindrical grinding device into the
socket outlet on the belt grinder.
Switching the belt grinder/cylindrical grinding
device on/off.
GX75*
Switching on:
Disengage and fold up the safety pushbutton (15*).
Press pushbutton "I" (17*).
The cylindrical grinding device is switched on
automatically.
Check the rotation direction of the brake wheel.
The rotation direction of the motor may only be
reversed by a qualified electrician.
Switching off:
Fold up safety pushbutton (15*). Press pushbutton "0"
(17*).
The cylindrical grinding device is switched off automat-
ically.
After switching off, the machine runs on for
approx. 50 seconds.
(* see operating instructions of the machine)
Safety pushbutton.
In situations of danger, press the safety pushbutton to
switch the machine off.
Switching the coolant pump on/off.
Set the switch to position "1". The coolant pump must
always be switched on for high removal rates.
Wear safety glasses/goggles.
Before starting work, make sure that all settings
described above have been correctly made and
checked.
Grinding pipes (figures 5+6).
Tilt the brake wheel back with lever (16).
Insert the workpiece at least 30 mm deep into the pipe
guide.
Open the coolant valve (28). Regulate the coolant rate
with shut-off valve (28).
Tilt the brake wheel forward again with lever (16) so
that the workpiece rotates and runs through the
machine.
Pull lever (16) back again when the workpiece is still
approx. 30 mm in the pipe guide.
Take the workpiece out of the machine.
If the feed speed is too high or too low, the incli-
nation of the brake wheel must be changed.