dentalfarm MICRA Evoluzione Operating instructions

MICROBLASTER
MICRA Evoluzione
USER AND MAINTENANCE MANUAL

1. DESCRIPTION
MICRA Evoluzione is a sandblasting unit designed for microblasting operations in the
Dental and Jewellery field.
The main features of the machine are: the ergonomic layout of the working chamber, the
safety of use, and the trouble-free structure of the mechanical installation. MICRA
Evoluzione is equipped with useful accessories and ensures a fast, practical and accurate
work. The unit consists of 2 EASY tanks, featuring a pressure release system and an
instant stop of the blasting jet. The unit can thus operate with two different abrasive
media.
The sandblasting process originates toxic dust which must not be inhaled; for this reason,
it is absolutely forbidden to operate the machine if a proper suction system has not
been previously connected to the sandblaster.
DENTALFARM has developed the so-called W.A.FI.S. (WATER AIR FILTERING
SYSTEM), a patented solution which eliminates airborne dust thanks to the combined
action of water and air pressure, in compliance with hygiene and safety regulations. The
WAFIS system can be easily connected on the top left side of the machine and starts
automatically when the sandblaster is switched on.
DENTALFARM ranges also include PRO-3 and PRO-3 Shake suction units, which can be
easily connected to any sandblasting machine.
2. TECHNICAL REFERENCE REGULATIONS AND TEST PROCEDURES
The appliance is mass-manufactured by DENTALFARM in compliance with technical and
safety rules in force, as provided for by the Machinery Directive 2006/42 EEC.
Careful inspection and full routine testing is carried out singularly on each machine which
is furtherly processed by an automatic testing installation assuring compliance with the
fixed limits
DEMOLITION AND WASTE DISPOSAL
According to International regulations, this unit has been classified as AEE
(electric and electronic device, whose correct operation depends on electric
currents and electromagnetic fields) and as a consequence, at the end of its
lifetime, it can not be treated as normal waste material but it must be
disposed separately, complying with Directive 2002/96/EEC.

3. INSTALLATION INSTRUCTIONS
/!\
ATTENTION
Installation of this machine is quite easy but must be carried out paying
utmost attention in order to avoid any mistake which may originate
problems, inconveniences and even damages during operation.
1. Place the machine on a proper workbench, which must be stable and strong enough to
hold the machine safely. Keep a sufficient distance (10/15 cm) on the right side of the
machine for the pipes and the feeding cables, as well as in order to have access to the
shutter and the filter. If a built-in WAFIS system is present, preferably choose a
workbench and a position (for instance on the bench edge) allowing the exhaust pipe to
fall perpendicularly into the collection tank.
2. Insert the quick clutch fitting on the male intake (A) located on the right side of the unit
and connect the pneumatic feeding pipe (polyethylene or rilsan, with diameter ∅8x6)
to the pipe-fitting. It is also possible to use a ∅12x6 elastic feeding pipe, by using the
fitting supplied with the unit.
3. Connect the electric feeding cable to the pre-fitted electric socket on the unit (B) and
plug into an approved 220v AC - 50Hz network socket with ground connection.
4. Install the preferred suction system; WAFIS, PRO-3 or any other.
The built-in WAFIS should be installed on the top left side of the
unit: unscrew the 4 screws fixing the black collection intake and
mount the WAFIS, unscrew the cap (C) and replace it by the pipe-
fitting delivered in the package, put together with the other portion
of pipe and plug the feeding cable into the electric socket (D).
PRO-3 suction units can be connected in two different ways: on
the top left to extract dust
particles only; in this case,
insert the piping into the black
collection intake; alternatively,
on the rear bottom of
the working chamber:
in this case, all the
exhausted abrasive will
be extracted. In both
cases, remove the protection caps from their holes.
Any other suction system can be connected to the black
collection intake by means of flexible piping; the inside
manifold fits a ∅30mm pipe, the outside manifold fits a
∅40mm pipe.

5. Adjust the air flow to avoid the machine being under pressure. Slightly turn the mobile
section of the adjusting valve when the suction system is on and stop when you notice
that the gloves are still slightly inflated.
6. Microblasting tanks (EASY tanks) are identical in layout, but can feature different
components (calibrated metering system) and external nozzles which vary
according to the abrasive mixture they can supply; it is therefore necessary to
observe the indications written on the identifying labels. Should you need to use an
abrasive compound of different grainsize (not listed below), it is possible to request the
assembly components and to replace them.
The unit can thus operate with three different abrasive media. It is also possible to
upgrade the unit to 3 or 4 microblasting tanks, thus offering the possibility to work with 4
different abrasive media.
To pour abrasive media into the tank, unscrew the tank cap and fill in the tank till
approximately 2/3 of its capacity (respect the maximum level marked on the label); then
close the tank.
Strictly observe the following parameters, based on the abrasive grainsize.
TREATMENT TANK
(dosing system) RECOMMENDED ABRASIVE NOZZLE DIAMETER PRESSURE
Surface roughness on
metals for composites A1072G
(coarse)
AP-060
Orange label
(AL2O3 60 - 250µ)
2,0 mm
(RMN046)
4 BAR
Surface roughness on
metals for composites A1072M
(medium)
AP-120
Pink label
(AL2O3120 - 105µ)
1,2 mm
(RMN043)
3/4 BAR
Surface roughness on
metals for ceramic or
resin
A1072M
(medium)
AP-150
Green label
(AL2O3150 - 95µ)
0,8 mm
(RMN044)
3/5 BAR
Surface roughness on
metals for ceramic A1072M
(medium)
AP-180
Red label
(AL2O3180 - 80µ)
0,8 mm
(RMN044)
3/5 BAR
Sculpture on ceramic A1072S
(fine)
AP-270
Yellow label
(AL2O3270 - 50µ)
0,5 mm
(RMN045)
3/5 BAR
Satin-finishing on any
type of metal A1072M
(medium)
AP-090
MICROBLAST
White label
Higher precision
0,8mm
Higher speed
1,2 mm
3/4 BAR
4/5 BAR
A longer nozzle with ∅0,8 mm size (RMN044L) is available on request to carry out
cleaning operations on ceramic prosthesis without metal support.
/!\ WARNING: Very fine abrasives are highly sensitive to moisture and must be
stored in a dry place, after the can has been accurately sealed and
the dessiccant packet has been duly introduced into the can (if
needed, replace them periodically).
When filling the abrasive tanks, check the condition of the abrasive
product; if the moisture content is too high (bad flowability and
presence of clots) it is recommended to heat the abrasive in order to
allow it to dry up completely. It is also of utmost importance to check
the condition of the compressed air which in no way must contain
evidence of moisture or of any polluting agents (oil, grease or rust).

4. INSTRUCTIONS FOR USE
• Press the switch to illuminate the working chamber and feed the operating controls.
/!\
ATTENTION:
May we remind that the sandblasting process will start only provided
the suction system is operating – as a consequence, the filtering
system MUST always be installed and OPERATED BEFORE you
start to work.
• Lift the window to introduce the pieces to be treated into the working chamber.
• Turn the selector switch knob to choose the type of blasting procedure you prefer –
references marked on the label are herewith specified.
POSITION OF THE
POINTER SELECTED FUNCTION
GREEN MICROBLASTING FROM THE GREEN TANK
BLUE MICROBLASTING FROM THE BLUE TANK (if any)
RED MICROBLASTING FROM THE RED TANK (if any)
WHITE MICROBLASTING FROM THE WHITE TANK
• Press the foot control: air enters the selected tank putting it under pressure, it gets
mixed with abrasive micrograins and will then be propelled by the spraying nozzle.
• Adjust the working pressure by means of the pressure adjusting device located next to
the pressure gauge: lift the knob and turn it rightwards (to increase) or leftwards (to
decrease). To lock the knob, push the knob back down.
The microprojectors are ideally positioned in the centre of the working chamber to facilitate
use with both hands. We recommend to put back them in place on their support at the end
of the work.
The window is made of anti-scratch polycarbonate material, resisting to the rebounding
abrasive grains. We recommend to use a soft cloth to clean it and to remove the dust from
inside and the use of ptotection screens (code 1000533).

5. MAINTENANCE
Many of the components of any sandblasting machine are subject to wear: this is
caused by the circulation of abrasive media; the instructions for a careful maintenance of
the machine as well as the operations to replace the damaged or worn out parts are
specified here below.
/!\
ATTENTION:
Before carrying out any maintenance operation inside the working
chamber or technical repair of the connections, remove the feeding
cable both from network socket and from the rear of the machine; in
such a way, both the electric and pneumatic installation of the unit will
be fully disconnected.
Should you have any doubts or difficulties, please contact our
Technical Service to avoid any risks or damages.
Cleaning of the 5my filter
A 5my filter, fitted on the right side of the sandblaster, prevents fine dust from damaging
internal components. Remove the inspection cap every 2-3 months and blow the filter with
compressed air to clean it from dust sediment.
Replacement of the polycarbonate window
Although the window is anti-scratch, it may be damaged by an extensive use (or a bad
maintenance). Replacement is very simple: locate the screws which fix the window to the
hinges and unscrew them.
Replacement of the plastic protection screens of the glass window: remove the fixing
clips, clean accurately the glass and place a new protection screen.
Replacement of gloves
The gloves are made of highly resistant and elastic latex, but are subject to the natural
ageing of rubber and to the action of sweat (produced by hands). This cause them to dry
up. To replace them, unscrew the flange screws and fit a new pair of gloves into the proper
seat.
Replacement of nozzles
Nozzles of the microblasting tanks are also subject to wear and need to be replaced. To
do this, unscrew the ring nut and assemble the new nozzle.
Replacement of abrasive media
To replace used abrasive media, pull the machine forward, lift the internal filtering grid,
remove the cap from the bottom of the working chamber and let abrasive flow out,
collecting it into a proper container.
Replacement of parts subject to wear (pipe, pipe-fittings, microprojector body)
The polyurethan pipe, the connection fitting and the microprojector body where abrasive
flows will inevitably wear out and need to be replaced regularly. To replace the
microprojector body, follow the same instructions specified for the nozzle; to replace pipes
or pipe-fittings, capsize the unit and work under the container. It is also possible to
disconnect each tank for easier operation, simply unscrewing the nuts fixing it to the
housing.

Replacement of tank internal components
Should it be necessary to replace the tank internal components like joints, air injectors,
abrasive outlet pipe, please contact our Technical Service.
Removal of a microblasting tank for repair purposes
The new tank units have been studied to facilitate your task during installation and
removal.
1. Unscrew the feeding pipe ring nut and disconnect the pipe
2. Unscrew the plastic ring nut and remove the microprojector pipe
3. Unscrew the two nuts fixing the tank to the support, and unclutch the tank.
Procedure for the installation of an additional Modulo tank
• Disconnect the feeding cable and the quick clutch pipe-fitting of the compressed air
• Remove the rear panel (unscrew the 2 fixing screws and pull out the side slots)
• Remove the sheet steel closing the tank seat by making it rotate on itself
• Fix the tank in place by means of the two nuts (adjust it so as to have the blue plastic
pipe-fitting towards the centre of the machine)
• Remove the cap from a free pipe-fitting on the selector and introduce the air inlet pipe
• From inside the working chamber, loosen the screw fixing the microprojector support
lower part and rotate it in order to locate the set up holes
• Drill the membrane of the rubber joint and let the free end of the handpiece pipe pass
through
• Connect the handpiece pipe to the blue pipe-fitting under the tank..
6. TROUBLESHOOTING
Problem: THE MACHINE DOES NOT START
Possible cause Remedy
Lack of tension Check: - magnetothermic switch
- socket supply switch
- fuses of the supply board
Lack of distribution in the machine Check: - connection to network socket
- network fuse
Should this malfunction repeat, contact our
TECHNICAL SERVICE.
Problem: NO LIGHTING
Possible cause Remedy
Bad electrical connection Check that the electrical plug is correctly plugged in.
Shutter is damaged Check connections and operation (some dust could
have oxidized contacts so that they seized up). Try to
blow with compressed air and replace if needed.

Problem: NO AIR IS COMING OUT
Possible cause Remedy
Bad pneumatic connection Check connection to the compressor.
Internal pipes are clogged
Check connections and condition of pipes up to their end (nozzles).
Air filter is clogged
Check and disassemble, if needed, the moisture collection glass and replace the internal filtering
element.
Problem: INTERNAL AIR LEAKAGE
Possible cause Remedy
Condensate discharge on the
filtering unit.
The condensate discharge is carried out by the lifting
of a ball cock. A sufficient level of pressure must be
provided for the valve to close.
Internal pipes are disconnected
Check condition of the piping. Polyethylene pipes might not be perfectly calibrated; try to cut out a small
portion from the end of the pipe and insert it into the
pipe-fitting; if needed, replace the pipe.
Problem: NO ABRASIVE COMING OUT, INTERNAL LEAKAGE.
Possible cause Remedy
Worn pipe-fittings or punched
microprojector pipe. The components of the circuit located after the tank – where abrasive flows - are subject to wear. It is
recommended to prevent any possible break by
replacing these components each 6-12 months,
according to the workload.
Problem: THE BLASTING FLOW IS IRREGULAR
Possible cause Remedy
Nozzle is clogged or worn out.
Unscrew nozzle fixing nut, clean both the hole and microprojector components (especially the thread) -
re-assemble.
If necessary, replace the damaged parts.
Microprojector feeding pipe is
worn out, bent or clogged If the pipe is worn out or bent, replace it. If it is clogged, disassemble the nozzle and let air come out.
The abrasive mixture is too rich in
aluminium oxide, i.e. loss of
sharpness
Abrasive container is overfilled, discharge it.
Pipe bending under the containers may collect
abrasive at the end of the work, when the valve
releases pressure; it is possible to limit this reaction
reducing pipe bending.
Damp aluminium oxide causing
bad flowing. Empty the tank, possibly disconnect it from the machine and turn it upside down, blow with clean air
in order to dry up all the internal pipings, then heat
and dry up the abrasive product and fill in again.

Compressed air filled with
condensation or oily particles. Fine abrasive compounds are particularly sensitive to moisture and, as mechanic pickling agents, they
capture polluting agents. Therefore it is important to
protect the efficiency of the product by installing
adequate filtering and drying systems on the air
installation.
Grainsize of the aluminium oxide
is not compatible with the
abrasive metering system inside
the tank.
Verify compliance with the indications printed on the
tank label and with the comparative tables (abrasive
grainsize / nozzle diameter / internal dosing system).
The blasting flow is not powerful
enough Unsufficient pressure. The 5my filter is clogged, unscrew the inspection cap
and clean it.
The solenoid valve is dirty: get in touch with
Dentalfarm Technical Dept.
Problem: ABRASIVE TANK IS NOT UNDER PRESSURE
Possible cause Remedy
Joints are not perfectly airtight Check whether cap has been correctly tightened.
Disconnect the tank from the machine, disassemble
and clean.

7. EXPLODED DRAWING AND SPARE PART LIST MICRA EVO table 1
POS. CODE DESCRIPTION
1 1000534 COMPLETE LED LIGHTING SYSTEM
2 1072037 LIGHTING SYSTEM BASE
3 1072040 ELECTRONIC BALLAST
4 1072041 42 LED CIRCUIT
5 1072038 LIGHTING SYSTEM COVER
6 1069010 PVC WASHER FOR HINGE
7 1054019A6 HINGE FIXED PART HOLE 6mm
8 RWA007 SUCTION HOSE
9 RWA006 JOINT FOR SUCTION HOSE
10 RMBL028 PIVOT FOR HINGE
11 RCB016A HINGE MOVABLE PART
12 1073010 MICRA POLYCARBONATE WINDOW
1000533 PACK OF 6 GLASS PROTECTION SCREEN
RCB042 PROTECTION SCREEN FIXING CLIPS
13 1064015 GLASS JOINT FOR SANDBLASTERS
14 1073001 MICRA WORKING CHAMBER
15 1073011 MICROPROJECTOR SUPPORT FOR 4 MICROPROJECTORS - MICRA
16 NEA123 CLIP
17 NPS001 AIR BLOWER
18 1000605 COMPLETE MICROPROJECTOR (specify color and nozzle)
19 NVT151 MALE KNOB M4x10
20 1073006 ABRASIVE FILTERING GRID
21 NVP030 PLASTIC CAP D.=31
22 NVG049 RUBBER FOOT H=19
23 RCB017 GLOVE FLANGE
24 RMA103 PAIR OF LATEX GLOVES
25 NEC018 PROTECTED BIPOLAR SWITCH
26 NEC050 ELECTRIC FOOT CONTROL
27 NEA046 PLUG AND FUSEHOLDER
28 NEA071 FUSE 5x20 - 6,3 A
29 NEV013 ELECTRIC CABLE WITH 3x1 PIN/PLUG
30 1072008 FILTER CONTAINER
31 1072009 CAP WITH 5MY FILTER
32 1072034 KEY FOR 5MY FILTER - BASE/MICRA
33 NPR119 STRAIGHT MALE PIPE-FITTING 8x6 1/8
34 NPR303 RAPID FEMALE CLUTCH 1/8
35 NPR220 PIPE-FITTING 7 1/8
36 NPR304 RAPID MALE CLUTCH 1/8
38 1069003 SELECTOR SWITCH HOLDER
39 1000531 5-WAY SELECTOR SWITCH
40 1073008E SELECTOR LABEL
41 NVT141 GRADUATED KNOB
42 NPS029 FILTER + REDUCER 1/8
43 1072026 REDUCER AND PRESSURE GAUGE ASSEMBLY BASE/MICRA
44 NPS040 0-6 1/8 PRESSURE GAUGE
45 1072033 CAP FOR SUCTION - BASE/MICRA

EXPLODED DRAWING AND SPARE PART LIST MICRA EVO table 2
POS. CODE DESCRIPTION
46 100072N COMPLETE EASY TANK
47 1073003 TANK SUPPORT
48 NVG048 RUBBER FOOT H=12
49 NES030 3-WAY SOLENOID VALVE-220v
50 1073005 REAR LOCK MICRA
51 NVP036 PLASTIC CAP D.=27
52 NEA047 FEMALE PLUG
53 NPR223 MALE PIPE-FITTING 1/8
54 NVT165 FEMALE CAP G1
55 1072003 ABRASIVE TANK
56 NPOR3300 OR JOINT 3300
57 1072002P NYLON / GLASS TANK
58 NPV020 SINTERED AIR INJECTOR
59 NPOR2043 OR JOINT 2043
60 1072004 AIR BLOWER PIPE-FITTING
61 NPR111 STRAIGHT MALE PIPE-FITTING 6x4 1/8
62 1072007 TERMINAL CAP ON ABRASIVE PIPE
63 1072006 ABRASIVE OUTLET PIPE
64 1072005 ABRASIVE PIPE ASSEMBLY PIPE-FITTING
65 NPR111P PLASTIC STRAIGHT PIPE-FITTING M 6x4 1/8
66 NPV042 SOFT POLYURETHAN PIPE 6x4
67 NEV030 SHEATH D.= 6
68 1067005 MICROPROJECTOR ALUMINIUM HANDLE
69 1067022 HANDLE WASHER (SPECIFY COLOR)
70 1067006 MICROPROJECTOR BODY
71 NPOR2012 OR JOINT 2012
72 RMN043 TUNGSTEN CARBIDE NOZZLE D.= 1,2
72 RMN044 TUNGSTEN CARBIDE NOZZLE D.= 0,8
72 RMN045 TUNGSTEN CARBIDE NOZZLE D.= 0,5
72 RMN046 TUNGSTEN CARBIDE NOZZLE.= 2,0
72 RMN047 TUNGSTEN CARBIDE NOZZLE D.= 1,5
73 1067007 NOZZLE LOCKING RING NUT
75 RM019 PIPE-FITTING
76 1073014 5-WAY SELECTOR SWITCH LOWER CAP
77 NVT047 PS RING 8/14/0.2
78 NVT020 ¼ STEEL BALL
79 1027076 SELECTOR SPRING
80 - M4x3 SCREEW
81 NVT049 FLAT SPRING
82 1073012 5-WAY SELECTOR SWITCH UPPER CAP
83 NVT034 PS RING 15/22/0.2
84 NPOR2025 OR JOINT 2025
85 1073013 5-WAY SELECTOR AIR DISTRIBUTOR
86 NPOR2018 OR JOINT 2018

8. WIRING DIAGRAM
NO. DESCRIPTION
S IN PLUG AND FUSEHOLDER UNIT
IG MAIN SWITCH
TR ELECTRONIC BALLAST
LED LED CIRCUIT
EV 3-WAY-SOLENOID VALVE
CP ELECTRIC FOOT CONTROL
P OUT FLUSH-MOUNTED SOCKET for DUST EXTRACTOR

9. PNEUMATIC CIRCUIT
NO. DESCRIPTION
1 AIR FILTER
2 PRESSURE REDUCER
3 PRESSURE GAUGE
4 3-WAY-SOLENOID VALVE – MANUAL BLASTING
5 SELECTOR SWITCH
7 5 MY FILTER
8 MICROBLASTING TANK
9 MICROPROJECTOR
10 AIR BLOWER

10. TECHNICAL DATA
Height 415 mm
Width 410 mm
Depth 380 mm at base – 450 mm overall
Net and Gross weight 12,5 kg – 15,0 kg
Voltage 230 V - 50 Hz (different tensions available on demand)
Absorption 60 W - 1,4 A
Lighting Energy-saving 42 LED circuit
Dust filtering system Possibility to add-on the built-in WAFIS system or PRO-3;
compatible with traditional extractors
Microblasting pressure min 1,5 BAR - max 6,0 BAR
Air consumption (∅0,8mm) 15 l/min at 2 BAR
Air consumption (∅2,0mm) 120 l/min at 4 BAR
Standard nozzles 2 x ∅0,8 mm tungsten carbide nozzles
Abrasive grainsize min - max mesh 270 (50µ) – mesh 60 (250µ)
DENTALFARM s.r.l.
Via Susa, 9/a - 10138 TORINO - ITALY
TECHNICAL & SALES SERVICE - (+39) 011/4346588
AFTER-SALE SERVICE - 011/4346632
FAX [phone]
E-mail: [email protected]
Website: www.dentalfarm.it