Installing The Unit; Using The Unit - Mestra R-080262 Manual Del Usuario

The Constellation sandblaster family (R-080262;
R-080263; R-080264) is composed of three
sandblasting chambers specially designed for
precision-blasting small parts used in the dental
prosthesis industry. For optimum output and
performance of this unit, we advise you to read
the following instructions with great care:

INSTALLING THE UNIT

• Carefully unpack the unit. You will find the
following fittings inside the chamber:
1. An air connection tube, diameter 6 mm.
2. A 90 º PVC elbow fitting to connect the
outgoing tube to suction if required.
3. Pedal drive mechanism.
• A rigid flat surface must be chosen for
installation of the unit, at a safe distance from
any sources of vibrations or heat, and the
surrounding atmosphere must not contain
excess moisture, since this could cause
compacting of the emery particles inside the
chamber, and lead to obstructions in the
microblasting nozzles. The unit must also be
positioned on a level which allows objects
inside the chamber to be handled with ease.
• Hook up the air connection tube supplied with
the unit to the connection at the rear of the
unit. The other end must be fitted to a
compressed air facility, with at least 7 bars of
pressure and minimum
litres/minute.
• Hook up the electric plug to 230 V, 50/60 Hz,
which must be earthed.
• Connect the pedal drive tube to the coupling
nozzle on the right-hand side of the unit.
Then position the pedal for comfortable foot
operation. Depending
requirements and/or handling comfort, it is
possible to position the pedal for knee
operation.
• Unscrew the sandblasting module covers (A),
and fill the pans with emery. During this
operation, it is most important not to fill the
pans to more than ¾ of their capacity. Put
the covers back on, and ensure they have
been screwed on tightly.
• In relation to the calibre of the nozzles, the
machine is supplied ex-works to the following
criterion of nozzle diameters and colours:
Yellow nozzle
Blue nozzle
Green nozzle
Red nozzle
flow rate
on operational
Ø 0.75 mm
Ø 1 mm
Ø 1 mm +
Ø 1.25 mm
GB
REGULATING THE PRESSURE
The blowing pressure of the blasting guns can
be regulated depending on the nature and
characteristics of the operation to be carried out.
Use the pressure-adjustment knob (B) on the
top right of the unit – pull the knob upwards, and
rotate it to the required pressure. The unit has a
pressure gauge (C) for easy selection of
operating pressure. When the pressure has
been adjusted, lock out the regulator knob by
pushing it down to the initial position.
Pressure gauge (C) shows the blasting module
gun blow pressure at all times, even when the
gun is non-operational.
CONNECTION TO THE SUCTION UNIT
The microblasting
permanently connected to forced suction via an
outgoing tube on the top left of the unit (G).
Suction must be able to produce a slight
depression inside the chamber for continuous
gentle circulation of the powder generated
towards the outgoing tube.
Depending on the requirements and geometry of
the external suction unit, it is possible to use the
PVC elbow fitting supplied for specific needs.

USING THE UNIT

The following operations are recommended for
proper precision-blasting:
1. Open the lid of the chamber, and put in the 100
part you wish to blast. Parts may also be
placed inside the chamber via sleeve (F).
Check there is enough emery in the pans.
2. Close the lid of the chamber, and ensure it is
tightly shut (the glass should fit snug against
the housing).
3. Suitable protection gear must be used:
goggles, gauntlets and a mask.
4. Start up the forced suction facility. The light
in the chamber may be activated for a better
view of the part, if required, using switch (D).
5. Use the main switch (E) to select the pan.
The colour coding system used makes it
easy to see which is the active pan at all
times.
6. Pick up the mobile gun selected inside the
chamber. The colour of the gun's nozzle-
holder matches the colour on the pan covers
(red, blue, yellow, green). When the gun has
been selected, press the drive pedal to begin
sandblasting.
7. Direct the blast carefully to prevent the
stream hitting the sides of the chamber
directly,
chamber
since this could
English
must be
damage the