5. Operation
33
Fig. 18
Important! Never turn the screw more than 1/2
turn at a time.
34
Fine adjustment of the force balance
If another accessory of a different weight is mounted on the object head (33), you must check whether it is necessary to readjust the force balance.
Checking the correct setting:
•Attach the new accessory and clamp the specimen.
•Set the object head to half the height of the vertical travel range by turning the
handwheel (Fig. 18).
If the object head remains in this exact position, the setting is correct.
If the object head moves, i.e. it is raised or low- ered, fine adjustment is necessary.
Failure to adjust the force balance may result in injury while working.
The force balance is adjusted using the screw (34), which can be accessed by removing the section waste tray on the bottom of the base plate of the microtome. Use the Allen key pro- vided, size 5 (with handle!) for the adjustment.
•If the object head moves downwards, turn the screw approx. 1/2 turn clockwise.
•If the object head moves upwards, turn the screw (34) approx. 1/2 turn counterclockwise.
•Continue this procedure until the object head no longer moves once released.
Fig. 19
Leica RM2245 | 29 |