7
2.3 Maintenance
Empty the spark box with regular intervals and control if the suction canals need a
cleaning. The dust bag has to be emptied after use. The contact wheel should be
replaced when the edges have been worn round or the tyre has been damaged.
The graphite pad on the surface grinding table is changed as required.
Fig.: 2.1
When changing the belt it is released by turning the handle (J) in anti-clock-wise
direction (see
fig.: 1.1
), the cover (H) and the side plate (L) is opened and the
worn-down belt (K) is removed by driving the belt against the direction of rotation,
the belt is removed from the machine by the drive wheel. The new belt is fitted. It
must be checked that the direction of the arrows on the back side of the belt
correpsond to the direction of rotation. Fasten the handle (J) again and bring it into
alignment with the handle (D).
Fig.: 2.2
To change the contact wheel remove the grinding belt, tool rest and spark
arrester. Use a 6 mm mandel to hammer out the pin (L). Now the contact wheel
with axle and bearings can be taken out. One of the lock rings (M) and the axle
(N) can be taken out. The new contact wheel (O) is fitted in in reverse order.
