Maintenance And Cleaning; Precautionary Measures; Technical Characteristics - Mestra R-080262 Mode D'emploi

chamber. If you wish to test the blasting
pressure or strength, direct the stream at the
rubber dolly inside the chamber.
8. After the blasting operation, release the
pedal, stopping the sand flow and activating
immediate air discharge to relieve pressure
in the pans. Then switch off the suction unit,
open the lid of the chamber, and take out the
part.

MAINTENANCE AND CLEANING

To ensure a lengthy service life, we recommend
the following:
• Always use approved
Talleres Mestraitua,
MESTRA emery. The mobile blasting guns
with nozzle diameters 1.25 mm and 1 mm
can respectively blow emery of maximum
diameter 250 and 150 microns. The mobile
blasting gun with nozzle diameter 0.75 mm
can blow a maximum diameter of 75 microns
(see the table).
• It is preferable
compressor units, since oil in the air could
cause the sand to compact and obstruct the
gun nozzles.
• Never fill the modules with emery deposited
on the floor of the chamber, since particles
with large diameters could obstruct the
nozzles, and this emery is now contaminated
with particles eroded off the parts blasted.
• The silencer filters inside the pans must be
replaced every 5,000 or 10,000 operations
(around 1 or 2 years). The incoming filter
fittings on each pan must be replaced every
500 or 1,000 hours (much depends on the
quality and metrage of the sand used).
Original MESTRA spare parts must always
be used.
• To prevent any abrasion wear on the walls
inside the chamber, take care not to direct the
stream of emery directly onto the walls.
• Clean out the emery inside the chamber on a
periodic basis, using the practical emptying
plug inside.
• Any water which has condensed inside the
incoming air filter must be bled out regularly.
The chamber has a window to view the
amount of water in the filter.
• Use a dry cloth or a cloth moistened with
soapy water for general cleaning of the unit.
• If the guns become obstructed, remove the
nozzle-holder and take out the nozzle.
Unblock the nozzle by blowing in the opposite
direction to the flow of air, or use a pin or a
thin wire to unblock it, and then refit the
attachment.
quality emery
S.L. recommends
to use dry-piston
• The blasting module guns on the 2-pan
Constellation model are supplied ex-works
with nozzles 1 and 1.25 mm in diameter. 0.75
nozzles, however, may also be used with this
model (consult your MESTRA distributor).
• The maximum diameter of emery particles in
relation to nozzle diameter is shown in the
table below:
MAXIMUM PARTICLE DIAMETER /
Nozzle
1.25 mm
1 mm
-
0.75 mm

PRECAUTIONARY MEASURES

♦ Never exceed 5 bars of pressure. Optimum
working pressure is between 2 and 4 bars.
♦ Operations should always be carried out with
the lid of the chamber closed, with suitable
protection. Masks and goggles should be
air
worn.
♦ Connect the chamber's outgoing tube to a
suction facility.
♦ The protection sleeves (F) must be replaced
immediately following any tearing or damage.
♦ Do not allow children or unqualified staff to
operate the unit.
♦ Use only guaranteed-quality materials as
emery (we recommend MESTRA emery).
Poor quality emery may be toxic when
inhaled, and may also cause obstructions in
the blow nozzles.
♦ Hook up the power supply cable to 230 V,
50/60 Hz, earthed.
♦ Consult
leakages are observed in the compressed air
circuit.
♦ Before carrying out any operation, first ensure
that the micro blasting module covers are
closed tightly.

TECHNICAL CHARACTERISTICS

Height:
Length:
Width:
Weight:
Working pressure:
Voltage:
Power consumption:
NOZZLE
Diameter
Up to 250 microns
Up to 150 microns
Up to 75 microns
your fitter immediately
320 mm
390 - 510 mm
440 mm
12.5 - 14 - 15.5 kg
2-6 bar
230 V, 50/60 Hz
4 W
English
if any
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