Preparation before surgery
22
Leica M220 F12 / Ref. 10 716 922 / Version 03
7.10 Changing accessories of the
surgical microscope and
balancing the swing arm
WARNING
Risk of injury from the surgical microscope swinging down!
X
Lock the swing arm.
X
Never change the accessories or attempt to rebalance
the microscope while it is above the field of operation.
X
Before re-equipping, always lock the swing arm.
X
Balance the swing arm each time after changing
accessories.
1
2
3
Locking the swing arm
X
Position the swing arm (1) approximately horizontally.
X
Tighten the brake knob for locking the vertical position (2).
The swing arm is now locked.
Cleaning the optical accessories
X
Inspect the cleanliness of the eyepieces and objective as well as
any photo or TV adapters as appropriate.
X
Remove dust and dirt.
Installing the accessories
X
Outfit the microscope with all accessories for use.
Balancing the swing arm
X
Hold the microscope firmly.
X
Loosen the brake knob for locking the vertical position (2).
The swing arm is now released.
X
By moving the swing arm manually, determine whether more
force is required to move it upwards or downwards.
If more force is required to move it upwards:
X
Turn the balancing knob (3) in the direction of the larger weight
(counterclockwise).
If more force is required to move it downwards:
X
Turn the balancing knob (3) in the direction of the smaller
weight (clockwise).
X
When adjusting the brake force, note that the upwards
movement force is slightly less than the downwards force.
7.11 Attaching the sterile components
Standard components
• 2 handles, transparent
• 1 drive knob (Illumination switch)
The handles and drive knob can be sterilized via steam or gas.
X
Sterilize the handles and drive knobs.
X
Attach the sterile drive knob to the rotary knob for illumination.
X
Attach the sterile handles to the optics carrier.
7.12 Starting up the surgical
microscope
1
X
Switch on the power switch (1).
X
The light is switched on and the XY-unit moves to the reset
position.
