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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
