Installation Of Condensers - Leica DMI Series Instructions Manual

6.5 Installation of Condensers

All condensers of the Leica DMI Series are
equipped with a 7-position turret disk that can be
equipped with light rings phase contrast (PH) or
dark fi eld (DF), IC prisms for transmitted light in-
terference contrast (DIC), or slit illuminators for
integrated modulation contrast (IMC).
Light rings, slit diaphragms, and condenser
prisms are generally already factory-installed in
the turret, making the following assembly steps
unnecessary. Please continue on → page 42, In-
stallation of Condensers.
Installing the Light Rings and Slit Diaphragms
• Switch the microscope off.
• Remove the condenser cover (38.1). Insert the
light ring in one of the condenser disk's large
receptacles with guide grooves.
• Turn the right-hand centering screw back fully
with the adjusting key (39.2).To prevent the
condenser disk from turning further, insert the
adjusting key (39.2) into the left-hand centering
screw of the disk. It may protrude a maximum
of 1 mm into the opening.
Fig. 33 Condenser base S1-S28
Insert light rings for Phaco (marked with the ID
numbers 0, 1, 2, 3 and the focal intercept S of the
corresponding condenser head), DF diaphragms
(marked with a D for dark fi eld and the focal in-
tercept S of the corresponding condenser head),
and slit diaphragms (marked M05, M10, M20,
M40 and M63) in the location holes of the turret
disk as follows:
• Select a position and ensure that the two
mounting screws have been released to the
point that they no longer extend into the posi-
tion. To adjust the screws, turn the desired
light ring position into the beam path. You can
now turn the screws using the two adjusting
keys.
• Next, take the special condenser tool
(Fig. 39.1).
• If possible, install the light rings 0 to 3 in as-
cending order. The numbering of the open-
ings is located at the edge of the crown gear
(4 large openings: 1-4; 3 small openings: 5-7).
Fig. 34
Condenser head S1
Fig. 35
Condenser head S28
6. Assembly
39