Bungard Jet 34d User manual

Seite 1 / 6
1. Preface
With this instruction we would like to give an over-
view about structure, function and operation of
the spray etching machine Jet 34d. Please read
the following te t carefully and pay increased at-
tention to the references on job safety and set-up.
Deposit this instruction at a safe place. It con-
tains information on maintenance or cleaning,
which you will need later on as well.
If you encounter a problem which is not answered
by this manual, please contact us by phone or by
mail. This will enable us to give specific advice
and analyze malfunction if this ever occurs.
The machines are manufactured by Bungard
Elektronik, Rilkestraße 1, D-51570 Windeck and
brought into circulation in the EEC-MEMBER
countries by the respective retailers/contracting
parties.
Operation areas:
aqueous-alkaline or sour etching of printed cir-
cuit boards.
Developing of positive or negative working,
aqueous-alkalinely processable fotoresists or
laminates (if necessary add antifoaming agents).
2. Technical Data
Dimensions: ca. 60 110 85 cm
Working height: ca. 90 cm
Electrical
connection:
220 V~, 50Hz, ca. 1.5 kW
Fill Quantity: ca. 16 l
weight: ca. 35 kg
Etching Speed ca. 35µm Cu /min (fresh
and warm etching liquid)
Motor 0,37Kw
Max. board di
mensions
300 400mm
Heating 1000 Watt Quarz glow bare
3. Safety Instructions
The machines are intended for the chemico-phys-
ical treatment of printed circuit boards.
The machines are not intended to be integrated
or connected with other machines or plants. They
may be operated only in appropriate areas and
run only by qualified technical personnel. Children
and domestic animals are to be kept away!
Electrical connection
The machine is manufactured using certified
parts according to the usual guidelines for elec-
trical security. This does not release the user
however of his duty to e ercise diligence while
handling electrically operated devices.
Jet 34d
Etching machine
Operating Instructions
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone], Fa : +49 (0) 2292/6175, E-mail: [e-mail]

Seite 2 / 6
Before all maintenance work on the machine
(filling, emptying, cleaning etc.) switch off the
machine and pull power supply plugs.
Pay increased attention to electrical defects be-
cause of the conductivity of etching solution con-
taining metal salts. In this a case pull the plug of
the machine and replug only after professional re-
pair. This is also valid for spilled etching agent.
As protection against unintentional contact with
chemicals, the machines are equipped with a
cover protection (door contact switch). This
switch is connected to the timer and stops the
pump.
Note: For job safety e amine occasionally the
correct functioning of the cover protection. Doing
so wear protective clothing and eye protection.
The machine may be switched on only with filled
etching agent chamber. The quartz glow bar must
be always sufficiently covered with etching agent!
An uncovered glow bar may cause destruction of
machine! The correct filling is on height of the in-
termediate bottom.
If the etching agent is prepared by release from
salts or mixing liquids, this must always take
place outside of the machine Pay attention to
the safety references of the chemical manufac-
turer as well.
Timer
Pressing the timer's start button quickly for
multiple times will start the built-in self test.
During this test, the motor runs for about two
seconds, not respecting the lid security switch.
For safety reasons, the timer self-test must not be
provoqued.
Personal protection equipment
While handling etching agents, thus in particular
when filling and emptying the machine, wear usu-
al protection equipment, like apron, gloves and
eye protection.
Place of assembly
Requirement according to WHG and/or supervi-
sion of trade: In order to prevent the penetration
of etching agent into the ground, the machine
must be installed a) in a sufficiently large area
with chemical-firm, waterproof ground lining (no
tiles, no concrete!) or b) in a chemical resistance,
waterproof collecting tray (we offer this as option),
which seizes the entire volume of the etching li-
quid.
Exhaust air
We recommend to install an e haust above the
machine for eventual etching steams. This re-
commendation is however purely precautionary.
Leakage of aggressive steams could not be
proven in two independent investigations. (It es-
capes water vapour, the salts of the etching agent
remains in the solution). An E haust connected
firmly to the machine is not possible - risk of the
damage by negative pressure.
Environmental protection
Used up etching agent is special refuse. It must
be handed over to certified disposal enterprises
under indication of the waste key number. Pay at-
tention to the refuse laws and regulations of your
country. We are not authorized to redemption.
Waste water
Prior to operating the machine, be informed on all
applying environmental protection legislation of
your country. Used etching liquid contains copper
and must be treated as special waste. In most
countries, this applies also for the rinse water. We
recommend that you collect dirty rinse water and
use it to set up fresh etching liquid. In accordance
to anti pollution laws, the final cleaning of the
boards normally requires a cascade rinsing unit,
or further wet process steps, like chem. tinning or
resist stripping. Any attempt to neutralize the
etchant or the rinse water is NOT recommend-
able to other than approved chemists.
If you do not have an appropriate water purifica-
tion for the rinse water in your facility, we recom-
mend our waste water processing facility Ionex
for this task.
Jet 34d
Etching machine
Operating Instructions
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone], Fa : +49 (0) 2292/6175, E-mail: [e-mail]

Seite 3 / 6
4. Body
The machine body consists of light-grey PVC.
The interior of the machine is divided into the
spray zone and the medium container. They are
divided by a removable and punched intermedi-
ate bottom. The etching agent is sucked in when
the snail pipe turns and sprays out of the perfor-
ated pipe by centrifugal force. Offsetted drillings
in the tube lead to an oscillation effect. The cover
of the machine is removable and possesses an
opening for the plate holder. On the right of the
machine are the control elements. In this bo are
thermostat, heating and thermal protection. Un-
der the machine is a drain cock for the etching
chamber and a drain cock and an overflow cock
for the rinse water tank. The rinse can be oper-
ated either as pure rinse or in combination with
our water treatment plant Ionex as a circulation
rinse.
5. Start Up
1. E amine the machine for possible transport
damages. If you encounter any problems inform
us and the carrier immediately.
2. Carefully transport the machine to its operation
site. Do not use the motor or other e tending
parts as a handle.
3. If the operation site is not even, support the
machine in suitable form.
4. Guarantee that the drain valve for the etching
agent is closed. If you want to run the rinsing tank
in flow modus install fresh water access (right
cock) and dirt water removal (left cock) by con-
necting hoses to the appropriate left and right
cocks.
5. Fill the etching chamber of the machine to the
upper edge of the intermediate bottom with water.
Fill the rinse water tank until the plate holder is
sufficiently covered.
6. Attach the machine to the power supply. (We
presuppose the house-lateral security of the elec-
tric circuit)
7. Turn on the main switch and the switch for the
heating. While heating the heating switch is lit
and the glow bare becomes an orange colour.
8. Open the flap on top of the machine, by pulling
on the grasp of the plate holder. The flap tilts
back thereby and is locked. Place the plate holder
perpendicularly and close the flap.
9. Set the timer as described later on and start
the machine.
10. If you open the flap with running motor, the
safety switch must interrupt the etching proced-
ure. The engine runs only if the cover is closed
and the timer is started again.
11. After successful test run e change the water
with the prepared etching agent.
The machine is now ready for use.
6. dding the Etching Liquid
The machine can be operated with all common
etching agents. We recommend to use iron-III-
chloride (FeCl3). Using iron-III-chloride you will
obtain a substantially higher etching achievement
and precision than e.g. with sodiumpersulfate. It
can be also used much longer than most other
etching liquids and so meets the requirement to
reduce special refuse. You can purchase iron III-
chloride from us. Please consider the separate in-
structions for this product!
Be cautious with all regeneration needing
etching agents. They can overheat by chem
ical reaction. Prepare fresh etching agent out
side of the machine. Fill in only completely
dissolved etching agent! If incompletely dis
solved etching agent comes into the pump, it
can block and damage the pump.
The etching agent is filled in from above into the
machine. The filling amounts to appro . 16 litres.
The correct level is reached, when the intermedi-
ate bottom is just covered. Fill the rinse water
tank of the jet up to a point, where a pcb on the
plate holder is immersed completely.
Jet 34d
Etching machine
Operating Instructions
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone], Fa : +49 (0) 2292/6175, E-mail: [e-mail]

Seite 4 / 6
7. Operation
The control panel (1) is protected by an upward
tiltable, transpar-
ent cover against
contamination.
The grasp to open
the cover serves
at the same time
to start and stop
the timer.
7.1 Main Switch
The button on the
upper left of the
control panel
switches the elec-
tric circuit for the
pump and the heating.
7.2 Heating
The switch down right on the control panel con-
trols the heating. A thermostat regulates the tem-
perature on 2 degrees e actly. When the temper-
ature reaches the preset temperature of 45° C
the lamp in the heating switch e pires. As addi-
tional security against overheating the machine is
equipped with a not resetable temperature pro-
tection in the heater circuit.
7.3 Timer
The etching time is controlled by digitally ad-
justably and readable timer. You can set the timer
from 1 second up to 9 minutes 59 seconds and
operate it single handed. When the adjusted time
e pires an acoustic signal sounds. The timer has
an LCD display and three buttons, which are
marked with MODE, - and +.
7.3.1 Adjusting the Etching Time
Pressing the keys + and - the etching time can be
preselected. This is indicated in the display. A
longer pressure on one of the keys causes a
faster change.
7.3.3 Start, Stop, Repetition
Pressing the MODE key the etching procedure is
started, the remaining time appears sequential in
the display. The etching procedure is interrupted,
if you press the MODE key. In both cases the
procedure can be continued for the remaining
time by pressing the MODE key or closing the
cover again. When the preset time runs out the
etching pump stops. A buzzer sounds in several
short intervals. The time stopped before is again
indicated by pressing once MODE. It can be
changed now alternatively. After a second press
of MODE the machine restarts. Important! The
timer is protected tiltable transparent cover. You
can start the machine indirectly by pressing the
cover when you had set an etching time before.
Nevertheless do not touch the timer with etching
agent dirty gloves!
7.4 Thermostat
The reset knob for the thermostats is located in
the case on the right and is preset on 45 degrees.
Only if you use an etching agent, which requires
compellingly another temperature, you should
adjust this temperature. To do so you must re-
move the housing (loosen the head screws at the
front plate and in the back of the case, remove
silicone from joint with a knife. Do not forget to
seal the gab with silicone again).
7.5 Board carrier
The boards are fi ed on a carrier that has one
fi ed and one movable horizontal bar. To adjust
the setting of the movable bar, just loosen the
plastic screws and shift it into the desired direc-
tion.
Slide the carrier with the board(s) vertically into
the etching compartment. Lift the lid towards
yourself and drop it into a horizontal position.
The board carrier handle looks out of the etching
compartment. To remove the carrier, just pull the
handle upwards. The lid will open and slide back
as far that you can remove the carrier.
Jet 34d
Etching machine
Operating Instructions
(1)
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone], Fa : +49 (0) 2292/6175, E-mail: [e-mail]

Seite 5 / 6
Keep the carrier in a slightly slanted position to al-
low e cessive liquid to drop off. Finally, rinse the
boards with the holder in the rinse compartment.
After the rinse or before feeding new boards you
put the carrier into a resting position on the edge
of the rinse compartment and on the small hori-
zontal bar inside it.
7.6 Rinse compartment
The water inlet and outlet connections are moun-
ted to the rear of the machine and can be easily
accessed through a wide opening in the machine
socket.
You may at choice use a flow or stationary rinse.
This will depend on the pollution regulations and
your in house waste water treatment facilities. If
you decide to have a stationary rinse please close
the two valves at the rinse – in and outlet. For a
flow rinse, open the outlet valve entirely and ad-
just the flow rate with the inlet valve. The water in-
let is equipped with a standard 3/4" threading like
household appliances.
If you use ferric chloride you may recycle the dirty
rinse water a) to substitute evaporation losses in
the etching compartment and b) for making up
fresh etchant.
8. Maintenance
8.1 Changing of the etching agent
The etching agent is discharged over a ball valve,
which is under the machine body (between the
two valves for the rinse). As described above,
youhave access to the etching chamber when
you remove the cover. This makes it easy to re-
move any sediments manually. If you use iron III-
chloride and consider the following proposal, you
can change the etching agent without large clean-
ing e penditure: With increasing saturation iron-
III-chloride tends to deposit surplus cuprous salts
as mud. The solution changes its colour from a
initially transparent to a milky green-brown. At this
time usually the etching time doubles in compar-
ison to the beginning. If you change the etching
agent at this time, then the mud formation can be
stopped and mud already set off will be brought
back into solution.
8.2 Cleaning of the machine in use of FeCl3:
Equipment:
Apron, eye protector, (Late ) gloves, 2 plastic
scrapers, 2 plastic sponges, 2 buckets, paper
cleaning cloths, plastic foil, container from plastic
for used etching agent
Chemicals:
Hydrochloric acid HCl technically, concentration
appro . 15%, quantity appro .: Jet: 18 l, stain re-
mover RX3
Proceed:
Cut the plastic foil in the double size of the utility
space of the machine. Put on protective clothing.
Discharge etching agents from the machine into
suitable container. Take up e isting sludges with
scraper mechanically and give it to the etching
agent. Lift the machine and set it on the foil. If you
do not have an e haust move the machine to
proper ventilated room or outside.
Fill the machine with 15%iger HCl. Close the cov-
er. Run the machine with heating switched on for
several hours. Repeat if necessary the cleaning
run the ne t day.
To Clean from the outside give warm water into a
bucket. Add stain remover on a wet sponge and
use it like abrasive powder Let the paste act on
the surface, if necessary moisten again with
sponge. Repeat this procedure, until the marks
are faded. Particularly persistent deposits care-
fully dab with HCl. To clear rinse thoroughly wipe
of machine with a not dripping sponge and clean
this sponge in a second bucket.
Discharge HCl from the machine and store to re-
use it again. Close drain valve. If the machine is
not filled again, wipe off the inside of the machine
beginning from the top and working your way
down. Clean sponge in second buck. Do not
touch the uncleaned parts of the machines, wear
long sleeved gloves. Give the contents of the
second bucket to the used up etching agent. Al-
ternatively you can rinse the machine from the in-
side by test run with water.
Jet 34d
Etching machine
Operating Instructions
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone], Fa : +49 (0) 2292/6175, E-mail: [e-mail]

Seite 6 / 6
Return the machine to its location. E amine
whether the glow bare is intact (do not switch on,
only visual check.) If necessary remove the elec-
tric case and pull back the rubber seal of the
glow bare to check for any penetrated liquid. In
this case you have to e change the glow bare. Fill
the machine with water to make a test-run and
then replace the water with fresh FeCl3 according
to the description above.
The hydrochloric acid can be used later, in order
to dissolve Sludge sediments in etching agent.
Give HCl in portions of appro . 0.5l to the dirtily
brown etching agent and let the machine run
briefly. Do this so long, until the solution is to a
large e tent clear again. But: NEVER give Hydro-
chloric acid to fresh iron-III-chloride! Dispose pos-
sible surplus of HCl with used etching agent.
This guidance represents only the fundamental
procedure in standard situations. Mistake and
change reserved. Handling the chemicals takes
at one`s own risk. Regard safety regulations!
Against FeCl3 marks on clothes, smooth and por-
ous surfaces we supply a highly effective stain re-
mover on organic basis.
Drain the dirty rinse water from floor drain of the
rinsing zone. The waste laws demand economical
handling of rinse water. We advise to collect the
water from the first rinse a) to compensate evap-
oration losses and b) for new FeCl3 solution!
After discharging the water sediment remains in
the basins. Take up mechanically and give these
to the used up etching agent. Dispose surplus
rinse water together with the used up etching
agent.
Motor:
we recommend to check the shaft sealing ring in
the PVC flange regularly or to e change this shaft
regularly every two years. On request we send an
instruction on how to change this shaft ring.
9. Guarantee
All machines are submitted before distribution to
e amination 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 e change of incorrect parts or by repair of the
machine in our house. Old parts change into our
possession.
10. Disclaimer of Warranty
All parts subjected to wear and the heater ele-
ment are e cluded from this warranty. Any direct
or indirect damage resulting from over-heat or
chemical reaction shall void all warranty claims.
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 workpieces worked on in the
machine, because we have no knowledge or con-
trol over the operating conditions at your site. This
is valid in a general manner also for requirements
from damage to articles, buildings and persons
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.
11. Copyright
(C) 1990-2008 Bungard Elektronik
Jet 34d
Etching machine
Operating Instructions
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone], Fa : +49 (0) 2292/6175, E-mail: [e-mail]