RASOR DD120LC User Manual

USE MANUAL

English

CUTTING UNIT
MOD. DD120LC

ED.1-09/14

SERIAL NUMBER

EN

2

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.

Rasor® can rely on the professional continuity of three generations,
thanks to the precious support of the promoting partner, to his passion, dedication and great
experience of seventy years.
The main characteristic of Rasor® is that each working phase, starting from the 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 DD120LC 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 DD120LC, 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 DD120LC components from coming in contact with
damp or wet surfaces.

• KEEP CHILDREN AWAY.
Unauthorized persons, in particular children, must be kept away from the working
area.

• FEED CABLE.
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 DD120LC 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 DD120LC, 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 388:2004 standard).

• SPARE PARTS.
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.

EN

4

ALL RIGHTS ARE RESERVED ACCORDING TO THE

INTERNATIONAL COPYRIGHT CONVENTIONS,

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 DD120LC 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

®

ELETTROMECCANICA S.r.l.

Via V. 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 suitcase, 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) Circular blade;

2) Butterfly wrench for blade nut disassembly.

3. PLATE DATA

The manufacturer's identification and EC STANDARD 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.

READ

THE

INSTRUCTION

MANUAL

DO NOT

REMOVE

THE

SAFETY

DEVICES

HIGH

VOLTAGE

SHEARING

RISK

USE

METAL

GLOVES

USE

GOGGLES

Serial number

Year of production

Model

Electric data

2

2

180

DD

0,52

2600

2___

DD120LC

380/400-3ph

1

1

EN

6

4. PRODUCT DESCRIPTION

The fixture described in this manual is a cutting unit model DD120LC which can be assembled
on automatic machines (e.g. spreaders, computerized cutting) by means of proper holes
located in the motor rest.
DD120LC can operate continuously at very high speeds and it can cut at various heights by
means of multiple installation.
Thanks to the sliding foot and to the steel upper quality of the blade supplied, DD120LC is
suitable for textile applications, especially for natural fibres, mattresses and sponges, during
production process. The three-phase motor, with extremely compact dimensions and extreme
reliability with 120 mm diameter blades, guarantees cuts with thickness up to 50 mm, also
for multiple layers.
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 Connector block 8 Circular blade

2 Motor frame 9 Sliding foot

3 Feed cable 10

Aluminium base covered with

Teflon

â

4 Motor cover 11 Left aluminium protection cover

5 Sharpening button 12

Adjusting knob for left

protection cover

6

Adjusting knob for right

protection cover

13 Motor rest

7

Right aluminium protection

cover

14 Cable gland

Device components

1

2

4

3

14

6

10

9

11

7

5

13

12

8

EN

7

7. FIELD OF APPLICATION

6. NOISE LEVEL

NOTE

It is advisable for cutting unit DD120LC 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 DD120LC 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 DD120LC 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 circular
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 DD120LC for purposes different from the above­mentioned ones.

5. TECHNICAL FEATURES

The technical data are only indicative and they can be changed without notice.

Circular blade Ø 120 mm, in Extra steel

Features of the available blades

12CSW

120 mm

2600 rev./min

ca. 50 mm

Three-phase-Asynchronous, 180 W

(IP65-CL F)

0,52 A

4000 g

5700 g

1,5 mt

LUX 200

< 2,5 m/s

2

0 ~ 55°C

10 ~ 95% without condensate

Cutting working depth

Motor power

Weight (with feeding cable)

DD120LC 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

EN

8

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 DD120LC 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

DD120LC 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.

L At the end of the working operations, the metal parts could be very hot.
L The cutting blade can work even when the protective device is disassembled.

WARNING

The operator must arrange a disconnetting switch on the supply line in order to switch off the
machine, if necessary.

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).

3

B

A

B B

EN

10

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.

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
5MA 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 right and left mobile protection covers “B” and “C” according to the thickness
of the material to be cut (see picture 5);

6)Carry out the cutting operation.

NOTE

Cutting unit DD120LC 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.

4

A

5

B

C

1

2

7

3

6

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” (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 two adjusting knobs “A” and “D” of
the right and left protection covers “C” and “F” by
removing the two relative washers “B” and “E”
(see picture 9).

3) Unscrew screws “M” and remove counterblade “L”,
then unscrew nut “G” by using a butterfly wrench
“1” and remove blade “H” (see picture 10).

4) 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

8

1

2

14. SLIDING FOOT REGULATION

For a good cut, the circular blade must always brush against
the slot end of the sliding foot (without touching it!).
When the blade wears, its diameter is reduced and therefore
the sliding foot must be brought again near the blade. In order
to reach this goal:

1) Unscrew screw “A” under the base and bring the sliding
foot near the blade (see pictures 11 and 12).

2) Tighten screw “A” again and carry out some cut tests
(see picture 12).

9

D

10

A

M

E

F

C

B

H

1

G

L

11

12

A

EN

12

15. SPARE PARTS / EXPLODED VIEW

14. TROUBLESHOOTING

à

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
Disassemble the blade and remove the material residues
Check the sliding foot integrity
Check the electric connections on the O.E.M. unit
Check the electric connections
Check the feeding cable

The cutting unit starts slowly, works

intermittently or it does not start

6

PROBLEM

The material is not cut or it gets stuck

between the blade and the sliding foot

The cutting unit is noisy

CODE DESCRIPTION CODE DESCRIPTION CODE DESCRIPTION CODE DESCRIPTION

12CSW

EXTRA STEEL CIRCULAR BLADE Ø 120
mm

GRT12M27 UPPER MOTOR BEARING SW120700

ALLEN SCREW FOR DD120 BASE
FIXING

SW1255DDRMOTOR REST

F 5055 WIDIA COUNTERBLADE GRT12M28 COMPENSATION RING SW120800 ALLEN SCREW FOR UPRIGHT FIXING SW1261DDGEAR

F 7056 COUNTERBLADE FIXING SCREW GRT12M29 FASTENING NUT SW120900 STEEL UPRIGHT SW126300 BLADE FIXING RING NUT

GMT12DD

COMPLETE MOTOR SERIES DD120, 3­ph 380 V 50 Hz

GRT27 FLAME RETARDANT FEEDING CABLE SW121100 STEEL PIN SW1274DDLCLEFT BASE WITH BEVEL DD120LC

GRT1213DDCOMPLETE ROTOR SERIES DD120 GRT8615 SPACER SW121400

ALLEN SCREWS FOR DD120 SUPPORT
FIXING

SW1274DDLC

CPL

LEFT BASE WITH BEVEL DD120LC,
COMPLETE

GRT12DD24

COMPLETE MOTOR FRAME SERIES
DD120

GRT8616 DOWEL FASTENING THE FAN SW121600 L12 MOTOR BEARING SW128600 MEDIUM GRAIN EMERY Ø 30x10x6

GRT12DD26

LOWER MOTOR FLANGE SERIES
DD120

SW108700 SHARPENER PIN SW122100 SHAFT HEAD FIXING SCREW SW1286CPLCOMPLETE EMERY UNIT

GRT12M17 MOTOR FRAME FIXING SCREW SW108800 EMERY SPRING Ø 11 mm SW122300 STEEL STUD BOLT T105000

SCREW FOR FIXING THE PLATE
LOCKING THE THREAD

GRT12M18 MOTOR COVER SW108900 SHARPENER BUSH SW122400 STEEL WASHER T1071DD SLIDING FOOT

GRT12M19 MOTOR FAN SW109000 EMERY SPRING Ø 6 mm SW122500

PROTECTION COVER ADJUSTING
KNOB

T107200 WASHER

GRT12M21 UPPER MOTOR COVER SW109100 SHARPENER CAP WITH BEARING SW122600 PLATE LOCKING THE THREAD T107300 SLIDING FOOT FIXING SCREW

GRT12M22 MOTOR COVER FIXING SCREW SW109200 SHARPENER CAP FIXING SCREW SW1244DDLLEFT ALUMINIUM PROTECTION COVER T107500

BLADE ASSEMBLING/DISASSEMBLING
WRENCH

GRT12M25 COMPLETE TERMINAL BOARD SW109300 WASHER SW1244DDR

RIGHT ALUMINIUM PROTECTION
COVER

SW1226S

SW1244DDR

SW122400

SW122500

SW122300

SW1255DDL

GRT27

SW121600

SW109200

SW1286CPL

SW109100

SW108800

SW109300

SW128600

SW108700

SW109000

SW108900

T105000

T105000

SW121400

SW121100

SW1261DD

SW122100

SW120900

SW120800

SW126300

12CSW

T 107500

GRT12M25

GRT12M28

GRT12M21

GRT12M17

GRT8615

GRT12M19

GRT12DD26

GRT12M29

GRT12DD24

GRT1213DD

GRT12M27

GMT 12DD ( 380/400V , 50Hz )

GRT12M22

GRT12M18

GRT8616

T 107200

SW120700

T 107300

SW1274DDLCPL

SW1274DDLC

T 1071DD

F7056

F5055

®

dal 1946

SW1244DDL

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 and material 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.

DECLARATION OF CONFORMITY

We hereby certify that the device specified hereunder complies to the requirements of Machinery
Directive 2006/42/EC, Electromagnetic Compatibility 2004/108/EC and CEI EN 60204-1,
Directive 2002/44/EC and to technical rulings UNI EN 414:2002, UNI EN ISO 12100:2010.

Noise tests have been carried out according to UNI EN ISO 11202:2010 Standards.

Cutting unit DD120LC has been produced according to workmanlike standards.

We declare that the above-mentioned goods comply with the standards in force concerning
safety and hygiene at work that can be applied to the material itself according to the Italian
legislative decree No. 81/08 (local law); the above-mentioned goods are not included in the
goods indicated in annex IV of Machinery Directive 2006/42/EC.

1.Category: THREE-PHASE CUTTING UNIT

2.Manufacturer: RASOR®ELETTROMECCANICA S.R.L.

3.Type: DD120LC

4.Serial number:..........................................................................................

5.Year of manufacture:.................................................................................

6.Country of manufacture: ITALY

7.Additional information:.............................................................................

(Signature)

Date:

Warranty expiry:

12 months invoice date or receipt

RASOR ELETTROMECCANICA S.R.L.

CUTTING EQUIPMENTS

Authorized dealer

(Stamp)