Leica DM L, Instructions Manual

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26
Move the collector to the rearmost position with
the focusing knob (21.4; 20.2). Pull the focusing
knob of the collector outwards. The collector
can now be removed.
Attention:
Make sure that the lamp base and the power
unit have the same number. If the lamp base is
marked L 1, for example, L 1 must also be set on
the power unit to make full use of the lamp and
not to shorten its life.
Move the collector to the front position with the
focusing knob (21.4; 20.2).
Remove the protective covering from the
burner (24.7).
Put the lamp holder with burner inserted into the
lamphousing and secure with the screws
(22.10). Try moving the collector (21.4): it must
not touch the power lead.
Attention:
When closing the lamphousing make sure that
the pins of the cut-out plug engage in the
sockets (22.11). Retighten the screws of the lid.
Push the cut-out plug in as far as it will go.
Attach the lamphousing to the microscope (21.5)
and connect to the power unit (compare mains
voltage!).
Adjust burner immediately after ignition.
→
p. 53 – 55
Lamphousing 106 z *
Hg and Xe lamps
Always insert the burner so that
1. the lettering on the metal base is upright
after insertion (different diameters of the
metal base for the Hg 100 and Xe 75 burners
ensure that these are always inserted the
right way up). If one of the bases is labelled
“UP“ it must therefore be assembled at the
top.
2. if the lamp bulb has a seal point (24.2), turn
the burner so that this point will be at the
side, not in the light path.
Apart from the halogen lamp the following gas
discharge lamps can be used, all requiring dif-
ferent lamp holders (Fig. 24) and power units:
Type Average life
Hg ultra high pressure lamp 50 W (alternating current) 100 h
Xe high pressure lamp 75 W
(direct current, stab.) 400 h
Hg ultra high press. lamp 100 W (direct current,
stabilized/non-stabilized) 200 h
Hg ultra high pressure lamp 100 W (dir. curr., stabil./
non-stabil., type 103 W/2) 300 h
Put the upper pin of the burner between the
clamps of the flexible power supply and clamp
with screw (24.1).
Unscrew the stud (24.3) in the holder slightly,
insert the lower end of the metal base and
retighten the stud.
Exchanging the collector on lamphousing 106 z:
Attention:
Attention:
Attention:
!
!