Durst DA-900 User manual

SPECIFICATION OF COMPONENTS AND OPERATING KNOBS
Serial
number
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
Description
Base
Projection board
Hexagonal screws for fixing the column in the base
Column
Enlarger head
Fi Iter drawer
Mirror housing
DANOCON 50 twin condenser
DANOCON 105 twin condenser
DUONEG negative
carrier
11) AUTONEG negative carrier
12)
13)
14)
15)
16)
17)
18)
19)
20)
21)
22)
23)
24)
25)
26)
27)
Lenses with their lens board
Serial number plate
Angular bar on column
Lock of the quick-locking lens holder
Lens carrier
Cable with plug and switch
Cover of the I ight hood
Fixing screws
for AUTOCALO
Red filter wheel-grip
Shutter wheel-grip
Grip bar for opening the serial number plate
Condenser grip (DANOCON 50)
Hooks on the condenser mounti ng
Condenser fixing bar
Pushing-bar for changing the lenses
Lamp socket
28) Wheel-grip for vertical adjustment of the enlarger head
29)
30)
31) -32)
33)
34)
35)
36)
37)
38)
Locking screw for the enlarger head adjustment
Guide tracks
for the heat absorbing filter
Wheel-grip for focusing both the lenses
Lens carriage
Focus variator wheel-grip
Locking knob of focus variator
Cross-slot screws on the base board
Green
filter
Steel bands
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DURST DA 900
A precision professional enlarger for all negative formats
up to 20 x 3112" (6.5 x 9 cm.) including 70 mm. film; lens
range from f = 28 mm. up to f = 105 mm. with automatic
focusing for two lenses.
In purchasing the DURST DA 900 you have demonstrated
your confidence in our equipment. We a-re very grateful
for this. At the same time we feel it our duty to help and
advise you as completely as possible so that you may
obtain full use of the extreme versatility of your DURST
Da 900. The effortless operation and perfect function of
this high capacity enlarger ensure you many years of un-
disturbed pleasure in your darkroom work.
This manual gives you step by step instructions on the
assembly and operation of your DURST enlarger. It is defini-
tely important to read it to learn quickly all of the functions
and operating controls of your new enlarger. in order to
avoid unintentional damage which could effect your gua-
rantee rights.
We thank you
for your
confidence

Lens equipment
of the automatic
focusing system
Unpacking
2
The DURST DA 900 comes as ordered with two lenses in the focal
lengths
of either 28 mm. + 50 mm .. 75 mm + 50 mm .. 80 mm. + 50
mm .. or 105 mm. + 50 mm. mounted into the automatic focusing system.
The lenses must not be replaced or exchanged with others. as this
would require a readjustment of the automatic focusing system.
For shipping purposes
the enlarger is disassembled as follows:
1 - Base (1) with attached projection board (2) and 4 hexagonal
screws (3);
2 - Column (4) with enlarger head (5);
3 - In a separate accessories cardboard box:
Mirror housing (7);
DANOFI filter drawer (6);
DANOCON 50 twin condenser (8) for the lens combination f = 28
mm. + 50 mm. or DANOCON 105 twin condenser (9) for all other
lens combinations;
DUONEG negative carrier (10) complete with DUMA 17 R. 18. 26.
35 masks and DUOMO 17 R. 18. 26. 35 counter-masks for the 28
mm. + 50 mm. unit and AUTONEG (11) for all other combinations;
2 lenses
with corresponding lens boards (12).
While unpacking, make sure that
you grasp the column (4) and not
the steel bands (38)!
Packing material
dust is to be removed from all parts and the lenses.
the condenser and the negative carrier glasses should be cleaned
with a soft brush or lint-free cloth.

The serial numbers of the lenses are engraved upon the serial
number plate (13) of the enlarger. The negative carrier also has the
number of the enlarger engraved upon it. Should the numbers differ,
return specifying .exactly
the serial numbers.
The column (4)
with the enlarger head (5) is inserted into the base
(1) from above and fastened evenly by means of the four hexagonal
screws (3). Make certain that the angular bar (14) on the front side
of the column (4) is in perfect contact with the base board (2), as
otherwise the focusing plane will not coincide exactly with that of the
projection board (2). Only after this has been done may you remove
the cord! The lenses are mounted with the enlarger head (5) in its
lowest position. To mount them, the lock (15) of the quick-locking
lens holder for the respective lenses is pressed to the rear and the
lenses with the lens board (12) are mounted into the lens barrel.
Then the lock (15) is released, so that the lens is now firmly seated.
While mounting the lenses, make certain that the marking upon the
respective lens board (12) matches with that of the lens carrier (16)
and
that the lens is seated properly in its cone.
11
1
Check
the serial numbers
of the lens
and negative carrier
Assembly
3