RASOR DD120ML User manual

USE MANUAL
DD120MLDD120ML THREE-PHASE
CUTTING UNIT

2
EN
COMPANY
ACKNOLEDGEMENT
Dear Customer,
thank you for choosing a Rasor®Elettromeccanica S.r.l. product.
Rasor®has been a reference point in the field of cutting systems in the textile, clothing,
furniture, tailoring, sport, chemical, automotive, nautical and insulating material sectors for
years. Its production has been always synonymous with reliability attested by many of
satisfied customers.
Rasor®quality system supervises all the company activities in order to provide the Customer
with a service that meets its needs and expectations in terms of product quality, delivery
reliability and stock of finished products.
All the parts of the devices have been planned and produced to guarantee an optimum
performance. In order to keep the high quality level and the long reliabilty of the Rasor®
products, it is recommended using only original spare parts and to contact the head office
for any maintenance work.
Rasor®Elettromeccanica S.r.l. was established in Milan in 1946 by Luigi Spinelli. For more
than sixty years it has been producing automatic cutting systems, cutting units for textile
applications and electric and pneumatic cutters.
Initially considered as a point of reference for cutting systems in the
textile applications, the Rasor®products are nowadays widely used in
other fields: chemical, automotive, nautical and sport sectors and in
furniture manufacturing.
Nowadays Rasor®can rely on the professional continuity of two
generations, with the experience inherited from the promoting partner, with his passion
and dedication.
The main characteristic of Rasor®is thateach workingphase, starting fromthe manufacturing
of the product up to its packing and delivery is carried out in Rasor®premises by qualified
operators who have professionaly grown up following the spirit of the company and of its
founders. This ensures the high quality which Rasor® has always considered as essential
since the beginning of its activity.
Following the innovative spirit mentioned above, our company is constantly focused on the
improvement of the product quality, on the study and development of new materials and
technologies.

EN
3
1. GENERAL SAFETY RULES
This manual is an integral part of cutting unit DD120ML and must be carefully
read before using it since it gives important indications with regards to its safe
installation, use and maintenance. Keep it with care.
Before using cutting unit DD120ML, read carefully the following general safety
rules.
• PACKAGING.
After taking off the packaging make sure that the cutting unit is intact. In
case of doubt do not use it and contact an authorized service centre. Do not
leave pieces of packaging (plastic bags, foam polystyrene, boxes, etc.) within
the reach of children or disabled persons since they are potential sources of
danger.
• AVOID DANGEROUS ENVIRONMENTS.
Prevent the cutting unit DD120ML components from coming in contact with
damp or wet surfaces.
•KEEPCHILDRENAWAY.
Unauthorized persons, in particular children, must be kept away from the
working area.
•FEEDCABLE.
Prevent the feed cable from coming in contact with hot objects, pointed
surfaces or sharp edges. Never pull the feed cable of the machine. It must
never be replaced by the user. If necessary contact professionally qualified
staff.
• KEEP THE WORKING AREA ALWAYS IN ORDER.
The workplace must always be kept in order and well lightened; liquids or oil
traces must not be present.
• ALWAYS USE CUTTING UNITS DD120ML PROPERLY.
Use the cutting units only to carry out the works they have been designed
for; do not use them improperly.
• OBSERVE THE USE OF THE TOOLS.
Do not cut excessively thick materials and always check blade conditions.
• AVOID ACCIDENTAL STARTINGS.
Before connecting cutting unit DD120ML, make sure that everything is installed
properly.
• CLOTHING.
Do not use large clothes or accessories that might get stuck in the moving
parts.
• GOGGLES AND PROTECTIVE METAL MESH GLOVES.
Always use goggles, protective metal mesh gloves approved by Rasor®during
use and maintenance operations (according to UNI EN 388:2017 standard).
•SPAREPARTS.
During maintenance and replacement operations use only original spare parts.
Blade maintenance must be only performed by Rasor®technicians.
• INSTALLATION.
Any installation that is not in conformity with these
specifications could jeopardize your safety and cancels the
warranty.

4
EN
ALL RIGHTS ARE RESERVED ACCORDING TO THE
INTERNATIONALCOPYRIGHTCONVENTIONS,
The reproduction of any part of this manual, in any form, is forbidden without
the prior written authorization of Rasor®Elettromeccanica S.r.l.
The content of this guide can be modified without prior notice. Great care has
been taken in collecting and checking the documentation contained in this
manual to make it as complete and comprehensible as possible.
Nothing contained in this manual can be considered as a warranty, either
expressed or implied - including, not in a restrictive way, the suitability warranty
for any special purpose. Nothing contained in this manual can be interpreted as a
modification or confirmation of the terms of any purchase contract.
Rasor®Elettromeccanica S.r.l. machines have not been conceived to work in areas at risk of
explosions and at high risk of fire and they cannot cut wet or damp materials. Moreover, they
cannot work in case of rain.
In case of damage or malfunction, cutting unit DD120ML must not be used until the Customer
Care Technical Service has repaired them.
The original configuration of the cutting unit must not be changed at all.
On receiving the machine make sure the supply corresponds to what has been ordered.
In case of non-compliance immediately inform Rasor®.
Also make sure the cutting unit has not been damaged during transport.
Customer Care Technical Service
WARNING
The installer and the maintenance man must know the content of this manual. Although
the main features of the machine described in this manual are not subject to change,
Rasor®Elettromeccanica S.r.l. reserves the right to modify the components, details
and accessories it deems necessary to improve the machine or to meet manufacturing
or commercial requirements at any time and without being obliged to update this
manual immediately.
Informative letter
For any information, please contact
® ELETTROMECCANICAS.r.l.
ViaV. Caldesi, 6; 20161, MILANO (MI) - ITALY
Tel: [phone]; Fax: [phone]
e-mail: [e-mail]
web: www.rasor-cutters.com
WARNING
RASOR

EN
5
2. TRANSPORT AND PACKING
The cutting unit is delivered in a cardboard box, inside which there are various options. The
code of the ordered product and its serial number are indicated outside the package (see
picture 1). The following accessories are contained in a bag inside the package:
1) Poligonal blade;
2) Butterfly wrench for blade nut disassembly;
3) Blade disassembly punch.
3. PLATE DATA
The manufacturer's identification and Machinery Directive 2006/42/EC conformity plate (see
picture below) is located on the front part of the cutting unit.
The plate must not be removed at all, even if the machine is resold. Always refer to
the serial number written on the plate itself when contacting the manufacturer.
Several safety warnings are printed on a card which is applied to the cutting unit feeding
cable; such warnings must be strictly followed by everyone dealing with the machine. The
company is not to be held responsible for damage to property or accidents to
people which might occur if the above-mentioned warnings are not observed. In
such a case, the operator is the only person responsible.
1
Serial number
Model
Electric data
2
2
180
DD______
0,52
2600 2___
DD120ML
380/400-3ph
13
READ THE INSTRUCTION MANUAL
USE METAL GLOVES
USE GOGGLES
SHEARING RISK
DO NOT REMOVE THE SAFETY DEVICES
Year of production

6
EN
4. PRODUCT DESCRIPTION
The fixture described in this manual is a cutting unit model DD120ML which can be assembled
on automatic machines (e.g. spreaders, computerized cutting) by means of proper holes
located in the motor rest. DD120ML can operate continuously and it can cut at various
heights by means of multiple installation. The central upright of “Monster” type eliminates
the winding problem of composite materials, that is the winding of fibres behind the
blade. By cutting with the blade and the counterblade always in contact and thanks to the
steel upper quality of the blade supplied, DD120ML guarantees the clean separation without
frayings of the two borders of the cut material. The cutting time is halved and the material
can slide at a doubled speed, thus reducing idle time. The three-phase motor, with extremely
compact dimensions and extreme reliability with 120 mm diameter blades, guarantees cuts
with thickness up to 4 cm. A sharpener assembled on the cutting unit head allows whetting
the blade at any moment without disassembling it. After carrying out this operation, it is
possible to start cutting again. A high power motor, perfectly balanced, with a high number
of revolutions and totally free of maintenance, reduces the vibrations to the minimum, thus
making the cutting unit comply with European Directive No. 2002/44/EC concerning the
risks deriving from mechanical vibrations.The mechanical parts are made of high resistance steel,
bronze and aluminium.
1
14 2
12
7
98
6
3
10
13
11
5
4
1 Connector block 8 Hard metal counterblade coated
with titanium
2 Motor frame 9 Poligonal blade
3 Feed cable 10 Monster type upright
4 Motor cover 11 Sharpening button
5 Adjusting knob protection cover 12 Emery wheel
6Anodized aluminium front
p
rotection cover with ad
j
ustable
hei
g
ht 13 Motor rest
7Aluminium base covered with
Teflon


14 Cable gland
Device components

EN
7
7. FIELD OF APPLICATION
6. NOISE LEVEL
NOTE
It is advisable for cutting unit DD120ML owners to verify the compliance with the standard
concerning safety of workers: Italian legislative decree 81/08.
The maximum acoustic pressure level emitted by cutting unit DD120ML is about 60 dB (A).
Noise tests have been carried out in compliance with Standard UNI EN ISO 11202:2010. The
device noise levels, measured at different distances (without any sound wave filtering system),
vary in the extent of few db (A).
Cutting unit DD120ML has been designed, manufactured and assembled to cut any kind of
fabrics or materials, with the exception of metal, plastic or wood, by means of rotary poligonal
blades. This equipment must not work:
- in areas prone to explosions;
- in presence of fine dust or corrosive gases;
- on wet or damp materials;
- to cut plastic, metal and wooden materials.
It is forbidden to use cutting unit DD120ML for purposes different from the above-
mentioned ones.
5. TECHNICAL FEATURES
The technical data are only indicative and they can be changed without notice.
120 mm with hard metal
counterblade coated with titanium
2600 rev./min
about 4 cm
Three-phase-Asynchronous, 180 W
(IP65-CL F)
0.52 A
4800 g
5000 g
1.5 mt
LUX 200
< 2.5 m/s2
0 ~ 55°C
10 ~ 95% without condensate
Cutting working depth
Motor power
Weight (with feeding cable)
DD120ML cutting unit features
Blade diameter
Blade speed
Max. absorption
Working temperature
Working humidity
Weight (with package)
Electric cable length
Minimum light for working
operations
Vibration at the start up
Circular blade Ø 120 mm, HSS Steel
8 side blade Ø 120 mm, HSS Steel
Features of the available blades
12CDD
12SDD

8
EN
8. USE WARNINGS
We recommend following the indications below in order to always work in safety conditions.
•All the operations must be carried out complying strictly with the safety rules of the
country where the device is to be installed.
•It is STRICTLY FORBIDDEN to smoke during the installation or adjustment operations
of the cutting unit.
•The Customer undertakes to comply with and make his staff observe all the rules and
regulations in force concerning safety, prevention of accidents and health in the work
place.
Therefore, the Customer assumes the responsibility to strictly follow all the rules and
regulations in force, as well as the special provisions in force in sport and public installations
the Customer declares to know after receiving all the relative necessary information.
•The cutting unit works also without its safety protective device. This
protective device must NEVER be removed.
•Always check the resistance of the material to be cut and the kind of blade which is
being used.
•The Customer shall equip his own personnel with all the individual safety protections
for the execution of the works, as well as with the ones which might be prescribed by
the Manufacturer due to specific danger conditions of the plant or of the area where
the personnel must work.
•Do not make any adjustment while the blade is working or while the electric plug is
connected.
•Always pay attention to the electric cable position to prevent it from being cut or
damaged by the blade.
•It is allowed to assemble cutting unit DD120ML on machines O.E.M. on condition that
their original structure is not modified. Otherwise, the intervention must be certified
by Rasor®.
Firstly make sure that the lines are able to feed the cutting unit correcltly, in compliance
with the safety rules (for the feature required see par. 5).
We suggest installing a magnetothermic safety device before the cutting unit and check
that the ground circuit is effective.
Before working on the feeding cable pull the plug out. Check that electric connections and
protections correspond to the driving force and the plate data values (voltage and current),
required by the different electric circuits.
By referring to the CEI 11-27/1 standard all the works carried out by means of electric
current must be performed by a staff, who has been provided with all the devices required
by the above-mentioned standard.
For the works carried out under voltage, it is necessary that the employer certifies the
suitability, against formative processes. The cutting unit DD120ML is supplied with electric
cable connected to the connector block located beside the motor.
The user must connect the cutting unit to the mains (the cable complies with the CEI 20-
22 III Standard). Never change the length of the cable supplied. If it is necessary, use a
longer cable and replace the one supplied.
WARNING
9. ELECTRIC CONNECTION

EN
9
10. RESIDUAL RISKS
Even though the cutting unit is safe, operators must pay attention to preserve their and
other people’s safety.


At the end of the working operations, the metal parts could be very hot.

The cutting blade can work even when the protective device is disassembled.
3
B
A
WARNING
The operator must arrange a disconnetting switch on the supply line in order to switch off
the machine, if necessary.
BB
To connect the new cable open the cover “A” by unscrewing
the 4 cross-slotted screws “B” (see picture 3). Connect the
phase cable to the terminal board. The minimum section of the
connecting cables must be determined by the operator in charge
of the installation.
We recommend using safety cables and sockets IMQ approved.
Check the connection by enabling the cutting unit and verify
the rotation direction. The cutting unit is provided with earthing
(yellow-green cable). Possible faulty earthing connections may
cause unsafe working conditions. Possible damages are not at
RASOR®s.r.l. charge.
The electric feeding must be supplied by a line protected against
overcurrent by means of the automatic switch (magnetothermal) or delayed fuses with a
suitable dimensions. The current of the safety devices must be as low as possible considering
the max. absorption of the machine (see identification plate).

10
EN
12. BLADE SHARPENING
After many hours of a continuative use of the cutting
unit, or if it should not be able to cut anymore, it is
necessary to sharp the blade.
To carry out this operation, start the blade and press
sharpener “2” located on it for 3-4 seconds (by pressing
push button “1”, as shown in picture 6).
Repeat the operation 2-3 times.
If the sharpening operation is not effective, check
the wear of emery grinding wheel “3” (see picture
7). If emery grinding wheel “3” is too worn or dirty,
replace it after disassembling the blade by means of
the proper tool.
1
7
3
6
11. INSTALLATION AND USE
To install and use the cutting unit, proceed as follows:
1) Fix the cutting unit on level squares or angles by using the two threaded holes “A” for
M8 screws located in the blade holder support (see picture 4).
NOTE
The cutting unit can be installed in any position/angle: vertically, laterally and it can be turned
upside down. It is not compulsory for the aluminium base to touch the machine table.
2) Lay the material to be cut;
3) Connect the cutting unit to the electric feeding;
4) Put the material on the cutting base;
5) Adjust the left mobile protection cover “B” according to the thickness of the material to
be cut (see picture 5);
6) Carry out the cutting operation.
NOTE
Cutting unit DD120ML can work in a fixed position (the material has to be moved) or it can
move forward while the material is kept in the same position. Make sure the material to be
cut is properly stretched, preventing it from curling.
5
4
A
B
2

EN
11
If the blade is no more able to cut (even after repeating
the sharpening operation several times) it is necessary
to replace it. To carry out this operation, use butterfly
wrench “1” and drift “3” locking the blade (shown in
picture 8).
To replace the blade, proceed as follows:
1) Use some protective gloves in compliance with
Italian Legislative Decree 81/08.
2) Remove the adjusting knob “A” of the left
protection cover “C” by removing the two washers
“B” (see picture 9).
3) Insert drift “3” into hole “D” (see picture 10), in
order to lock the blade (the hole on the blade
must correspond with the one on the structure).
4) Use butterfly wrench “1” to unscrew nut “E” and
remove blade “F” (see picture 10).
5) Replace the worn blade with the new one “2”,
being careful to center the blade on the gear, in
the correct position; we remind you to assemble
it so that the side with the writing Rasor can be
seen by the operator.
6) Assemble all the components again and carry out
the sharpening.
13. BLADE REPLACEMENT
9
8
10
A
B
C
F
1
E
3D
2
1
3

12
EN
15. SPARE PARTS / EXPLODED VIEW
14. TROUBLESHOOTING


SOLUTION
Make sure that the blade touches the sliding foot
Check the kind of material
Sharpen the blade
Check the material thickness
Check the compatibility between blade and material
Make sure that the motor turns correctly
Reduce the feeding speed
Check the sliding foot integrity
Check the blade integrity
residues
Check the sliding foot integrity
Check the electric connections on the O.E.M. unit
Check the electric connections
Check the feeding cable

PROBLEM
The cutting unit is noisy
The material is not cut or it gets stuck
between the blade and the sliding foot
The cutting unit starts slowly, works
intermittently or it does not start
CODE DESCRIPTION CODE DESCRIPTION CODE DESCRIPTION CODE DESCRIPTION
12SDD 8 SIDE BLADE Ø 120 mm, IN H.S.S.
STEEL GRT12M28 COMPENSATION RING SW109000 EMERY SPRING Ø 6 mm SW124000 UPRIGHT SUPPORT SCREW
GMT12DD COMPLETE MOTOR SERIES DD120, 3-
ph 380 V 50 Hz GRT12M29 FASTENING NUT SW109100 SHARPENER CAP WITH BEARING SW1244MDDL LEFT ALUMINIUM PROTECTION COVER
GMT12DD480
60 COMPLETE MOTOR SERIES DD120, 3- ph 480 V 60 Hz GRT27 FLAME RETARDANT FEEDING CABLE SW109200 SHARPENER CAP FIXING SCREW SW1255MDDL ALUMINIUM MOTOR SUPPORT
GRT1213DD COMPLETE ROTOR SERIES DD120 GRT8615 SPACER SW109300 WASHER SW1261DD HUB
GRT12DD24 COMPLETE MOTOR FRAME SERIES
DD120 GRT8616 DOWEL FASTENING THE FAN SW121100 STEEL PIN SW126300 BLADE FIXING RING NUT
GRT12DD26 LOWER MOTOR FLANGE SERIES
DD120 SW1076S SPRING WITH DOWEL SW121400 ALLEN SCREWS FOR DD120 SUPPORT FIXING SW1286DD EMERY DD
GRT12M17 MOTOR FRAME FIXING SCREW SW107900 COUNTERBLADE HOLDER FIXING
SCREW SW121600 L12 MOTOR BEARING SW1286DDCPL COMPLETE EMERY UNIT
GRT12M18 MOTOR COVER SW108000 RIGHT COUNTERBLADE HOLDER SW122100 SHAFT HEAD FIXING SCREW SW1290M RIGHT BASE WITH BEVEL, Monster
GRT12M19 MOTOR FAN SW1081TN RIGHT COUNTERBLADE COATED WITH
TITANIUM SW122300 STEEL STUD BOLT SW1290MSCPL COMPLETE BASE DD120ML
GRT12M21 UPPER MOTOR COVER SW108200 COUNTERBLADE FIXING SCREW SW122400 STEEL WASHER SW129100 SHARPENER BUSH
GRT12M22 MOTOR COVER FIXING SCREW SW108700 SHARPENER PIN SW122500 PROTECTION COVER ADJUSTING
KNOB SW129200 SCREW FOR FIXING THE SHARPENER
SUPPORT
GRT12M25 COMPLETE TERMINAL BOARD SW108800 EMERY SPRING Ø 11 mm SW1238S STEEL UPRIGHT T107500 BLADE ASSEMBLING/DISASSEMBLING
WRENCH
GRT12M27 UPPER MOTOR BEARING SW108900 SHARPENER BUSH SW1239DD ALLEN SCREW FOR UPRIGHT FIXING T1076DD BLADE LOCKING PUNCH

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WARRANTY
Rasor®Elettromeccanica S.r.l. cutting unit has a 12 month warranty from the date indicated
on the last page of this manual, except in case of different written agreements.
The warranty covers all manufacturing andmaterial defects. Replacement and repair operations
are covered only if carried out by our company and at our workshop. If in-warranty goods
need to be repaired, the customer must always send the complete machine to Rasor®.
Single units will not be repaired under warranty.
The material to be repaired must be sent CARRIAGE FREE.
Once the machine has been repaired, it will be sent CARRIAGE FORWARD to the customer.
The warranty covers neither technicians' intervention on site nor the machine disassembly
from the installation place.
If for practical reasons, one of our technicians is sent to the premises, the customer will be
charged the costs plus the travelling expenses.
The warranty does not include:
failure caused by wrong use or assembly,
failure caused by external agents,
failure caused by lack of maintenance or neglicence;
blades and parts subject to wear.
WARRANTY FORFEITURE:
In case of arrearage or other breaches of contract,
Whenever changes or repairs are carried out on our cutting units without our prior
authorization,
Whenever the serial number is tampered with or cancelled,
Whenever the damage is caused by improper use, bad treatment, bumps, falls and
other causes not due to normal working conditions,
Whenever the unit seems tampered with, dismantled or previously repaired by
unauthorized staff,
In case the cutting units are used for purposes that are different from the ones
described in this manual.
All repair operations carried out under warranty do not interrupt its duration.
All disputes will be settled in the court of justice of Milan (Italy).
We thank you in advance for the attention you will pay to this manual and we invite you to
inform us of any change you deem necessary to improve it and make it more complete.

RASOR ELETTROMECCANICA SRL
Via Vincenzo Caldesi 6
20161 Milan ∙ Italy
ph. [phone]
fax [phone]
[email protected]
www.rasor-cutters.com
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