Bungard Hellas-E User manual

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Introduction
Note:
This instructions apply as well to the single sided
exposure unit called Hellas-E. Hellas-E has on
the lower side an aluminium plate instead of the
glass board and the tubes in the lower lighting
area are removed.
Application
The HELLAS exposure unit is a vacuum assisted
copier suitable for all products which are light
sensitive in the near V emission range (360-
400nm). These are in particular positive or negat-
ive fotocoated boards, printing plates made from
nylon, aluminium, steel as well as Diazo- and
transfer films.
Safety Regulations
Pull the power supply plug before all
maintenance work on the machine.
The intensity and spectre of the V light from the
fluorescent tubes can be compared to that of skin
tanning sets: It may irritate your eyes. You should
therefore avoid to look directly into the light for a
longer time.
Be extremely careful not to contaminate the foil
with spots of developer or etching liquid.
Do not put pieces with an height of more than
about 5 mm under the frame. This could lead to
serious deformation or even cuts in the foil. Be
cautious not to put any sharp things between the
glass board and the foil, when the vacuum is on.
This might damage the vacuum foil.
Do not block the vacuum pipe which ends at the
glass board (Hellas-E: aluminium plate).
Keep away from moisture
Do not drop
Lift the lid only to place artwork (prevent lid from
faling)
Technical Data
Dimensions (Bx-
xT):
62 cm x 24 cm x 65 cm
Weight: ca. 40 kg
Electrical Con-
nection:
220 V~, 50 Hz, ca. 800 W
Max. Exposure
Size:
ca. 570 x 300 mm
Hellas / Hellas-E
Exposure nit
Instruction for se
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone], Fax: [phone], E-mail: [e-mail]

Seite 2 / 4
Set Up
The unit should be put onto a table in a way that it
can be accessed from the front. Please keep a
distance of 30 cm from walls, radiators etc. and
make sure that the cover can be easily opened
up to a vertical position.
If you encounter any transport damages be sure
to directly inform us and the carrier.
Remove the tape locking the cover and verify that
the fluorescent tubes have not been damaged
during transport. To do so, take the cover's
handle and lift it so that the cover stands vertically
on the rear mounted rubber pads.
Looking onto the lower part of the set, you can
see the vacuum frame with its polyester foil span-
ning over a crystal glass plate. Please check the
foil, the frame and the glass plate for any dam-
age. You may lift the frame vertically so that it
leans against the upper part of the unit. sing a
soft cloth, please remove dirt or rests of packing
material from the foil and the glass plate.
To check that the electrical components of the
unit work correctly, please follow the operating in-
structions given here below. The set requires a
230 V, 50 Hz main supply.
Operating
Put the cover and the vacuum frame into a
vertical position. Place the board(s) to be
exposed onto the glass plate. Be sure to have
removed any protective foil from the board(s).
Place the artwork onto the board. For double
sided boards, we propose that you mount the top
and bottom artwork on an L-shaped carrier so
that they superimpose and form a "bag" with
lateral stops for the board. You will have best
results with the emulsion side of the artwork (film)
lying directly on the photoresist. Take care not to
enclose dust particles between the board and the
artwork.
Now slowly return the vacuum frame into its hori-
zontal position. (If any displacement of the art-
work has occurred, reopen the frame and re-
arrange the artwork.)
Locate the switches, the timer, the ampere meter
and the vacuum control on the front panel of the
unit (1). Hellas-E: no Amperemeter (2). All to the
left, there is a switch controlling the vacuum
pump. Put it into its ON position. The pump will
start running and the indicator lamp in the switch
will light. Within a few seconds, the pump will
have evacuated the air between the frame and
the glass plate. The vacuum indicator will show
approx. 0.8 bar.
Hellas / Hellas-E
Exposure nit
Instruction for se
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone], Fax: [phone], E-mail: [e-mail]
Hellas
Hellas-E

Seite 3 / 4
The polyester foil is structured to allow an easy
and complete evacuation on the whole surface.
Nevertheless, there might remain an air cussin
between the artwork and the board(s). Wipe over
the polyester foil with your hand or with a soft
cloth to remove any rest of air. sing the handle,
smoothly close the cover.
Select single or double side exposure by turning
on the appropriate switches for the upper and
lower set of tubes. They are located to the right of
the timer. Hellas-E: You may switch on only the
upper unit.
To start the exposure, follow the instructions
below to operate the electronic timer. Alternatively
you can operate Hellas in continuous mode. To
do so turn on the switch left to the timer. Turn the
switch off to stop the continuous operation mode.
The indicator lamp in the switch is lit during
automatic exposure and continuous operation as
well. The switch is marked ventilator to indicate
that there is a built-in fan always running together
with the lower tube set. Hellas-E: there is no
switch for continuous exposure.
Timer
The exposure time is controlled by a digital-read-
out and digital-adjustable timer. The range of time
is from 1 second to 9 minutes 59 seconds. The
device supports easy time pre selection and
recall by one hand operation and can be run in
stop-and-go turns.
On the timer front panel there are the LCD time
display and the three buttons MODE, + and -.
To adjust the desired exposure time, press the +
or - buttons accordingly. Keeping one of them
down makes the settings change faster.
To start exposure, press the MODE button once.
The remaining time is displayed continuously on
the LCD display. The process is interrupted and
restarted for the remaining time at each time the
MODE button is pressed. The timer beeps
several times when exposure has finished.
To redisplay the previous setting, press the
MODE button once. You may then use the +/-
buttons to change the setting or just restart the
unit by pressing the MODE button.
Do not switch off the vacuum during exposure!
With the artwork loosing contact to the board,
severe under-cut may result.
When having completed the exposure, open the
cover, switch off the vacuum and open the frame.
Never lift the frame with the vacuum pump
running. Abnormal usage of the frame would
result.
The intensity and spectre of the V light from the
fluorescent tubes can be compared to that of skin
tanning sets: It may irritate your eyes. You should
therefore avoid to look directly into the light for a
longer time.
Maintenance
There is only little maintenance necessary for the
HELLAS exposure set. The vacuum pump, for
instance, is maintenance free. To protect it from
dirt and dust, there is a filter put in front of it.
The fluorescent tubes are subjected to wear.
After about one or two years, they should be
replaced. A reduced Amps reading on the
emission control meteor dark shadows
appearing at the tubes ends indicate that they
should be renewed.
To do so, at first disconnect the exposure set
from the main supply. Carefully lift the crystal
glass plate and pull off the small blue vacuum
hose to get access to the lower tube set. Turn the
tubes along their axis until they snap off from the
fittings. Replace them only with tubes of the same
type and strength. Check that the new tubes are
well locked. It is recommended also to replace
the starters.
Hellas / Hellas-E
Exposure nit
Instruction for se
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone], Fax: [phone], E-mail: [e-mail]

Seite 4 / 4
We want to tear your special attention to a
careful maintenance of the vacuum foil. It should
be cleaned regularly using water and a soft
detergent. Do not use solvents.
Be extremely careful not to contaminate the foil
with spots of developer or etching liquid.
Do not put pieces with an height of more than
about 5 mm under the frame. This could lead to
serious deformation or even cuts in the foil.
Guaranty
All machines are submitted before distribution to
examination on tightness, function and continu-
ous operation firmness. On the machine we grant
a work warranty of 12 months to our customers
starting from purchase date on accuracy in ma-
terial and processing. We warrant at our choice
by exchange of incorrect parts or by repair of the
machine in our house. Old parts change into our
possession.
Disclaimer of Warranty
All parts subjected to wear and the heater ele-
ment are excluded from this warranty. This also
applies to defects to the machine caused by non-
observance of this manual or of parts of it.
We cannot accept subsequent claims from dam-
age or destruction of work pieces worked on in
the machine, because we have no knowledge or
control over the operating conditions at your site.
This is valid in a general manner also for require-
ments from damage to articles, buildings and per-
sons as well as the environment.
We do not warrant that the function of the ma-
chine will meet the customer's requirements or
that the operation of the machine will to this re-
gard be error free.
In no event will we be liable to the customer for
any incidental, consequential, or indirect dam-
ages of any kind, including loss of profit and pro-
secution for environmental pollution, even if we
could have been aware of the possibility of such
damages.
All information was arranged with great care. We
reserve ourselves however mistake and technical
changes without previous announcement.
Copyright
We hope to have covered with this information all
essentials of using the HELLAS exposure set and
wish you a successful working with this set. If any
questions this manual does not answer arouse,
do not hesitate to contact us.
(C) 1989-2013 Bungard Elektronik
Hellas / Hellas-E
Exposure nit
Instruction for se
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone], Fax: [phone], E-mail: [e-mail]