Cembre NR-13E User manual
1
09 M 079
ENGLISH
FRANÇAIS
DEUTSCH
ESPAÑOL
ITALIANO
NR-13E
NR-13E-110
ELECTRIC IMPACT WRENCH
BOULONNEUSE TIREFONNEUSE ELECTRIQUE A PERCUSSIONS
ELEKTRO-SCHLAGSCHRAUBER
ATORNILLADOR ELECTRICO DE IMPACTO
AVVITATORE ELETTRICO AD IMPULSI
PATENT
PENDING
2500 Nm
1844 ft.lbs
OPERATION AND MAINTENANCE MANUAL
NOTICE D'UTILISATION ET ENTRETIEN
BEDIENUNGSANLEITUNG
MANUAL DE USO Y MANTENIMIENTO
MANUALE D'USO E MANUTENZIONE
2
FIG. 1
03
01 02
13
14
12
05
04
07
08
09
06
10
15
11
3
ENGLISH
ATTENTION!
– Before using the machine, carefully read the instructions contained
in this manual.
SAVE THESE INSTRUCTIONS: this manual contains important safety
and operating instructions for the impact wrench.
– Always wear hearing protection.
RISK OF HEARING DAMAGE
Undernormaloperatingconditions,thismachinemaycausetheoperator
to be exposed to a personal and daily noise level of over 85 db (A).
– Wear protective goggles, gloves and safety footwear.
– Avoid prolonged exposure to vibration.
– When electrical equipment is used, basic safety precautions must be
followed to reduce fire danger, electric shock and personal injury.
– Thedegreeofprotectionofthemachine againsthumidityis“common".
Do not expose the machine to rain or humidity; penetration of water
in to the electric motor presents the risk of electric shock.
– Mobileelectricdevicesusedoutdoorsmustbeconnectedtothesupply
via a safety interrupter for breakdown current.
– The operator should concentrate on the work being performed and
be careful to maintained a balanced working position.
– The machine heats up when operating.
– When operating, keep hands well away from dangerous areas.
– Avoid clothing which could be a cause of danger to personal safety.
4
1. GENERAL CHARACTERISTICS
ENGLISH
220 - 230 V / 50 - 60 Hz 110 -120 V / 50 - 60 Hz
IMPACT WRENCH TYPE: NR-13E NR-13E-110
suitablefortighteningandlooseningoperationsusinganimpact
system, for railway and industrial applications.
33 mm
2500 Nm (1844 ft.lbs)
single-phase
3000 W
automatic switch off in case of loss
of electrical power to protect the operator against
accidental starting
25,4 mm (1")
KLUBER STABURAGS N12MF (100 gr.)
manual, 3 positions
SYNTHY TOOL MACHINE ISO 100/GX5 or
BEL-RAY SE-2 LUBRICANT ISO 100 or equivalent
Refer to Fig. 14 page 56
21 kg
Application range:
Capacity: (max. bolt diameter)
Max. torque developed:
Electric motor:
Voltage supply:
Power rating:
Power loss safety switch:
Impact unit:
square drive (DIN 3121):
lubrication grease:
Gear change:
Reduction gear
recommended oil (250 ml):
Dimensions:
Weight:
Acoustic noise (Directive 2006/42/EC, annexe 1, point 1.7.4.2 letter u)
–The weighted continuous acoustic pressure level equivalent
A at the work place LpA is equal to ...................................................................................................................98.4 dB (A)
– The maximum value of the weighted acoustic displacement
pressure C at the work place LpCPeak is equal to..........................................................................................123.6 dB (C)
– The acoustic power level emitted by the machine
LWA is equal to.........................................................................................................................................................107.2 dB (A)
Risks due to vibration (Directive 2006/42/EC, annexe 1, point 2.2.1.1)
Tests carried out in compliance with the indications contained in EN ISO 5349-1/2 and UNI EN 28662-1
Standards, and under operating conditions much more severe than those normally found, certify that the
weightedrootmeansquareinfrequencyoftheaccelerationtheupperlimbsareexposed
is7m/sec
2
max.
5
ENGLISH
01 – CONTROL GRIP
02 – OPERATING PUSH BUTTON
03 – TRANSPORT HANDLE
04 – IMPACT UNIT
05 – SQUARE DRIVE SHAFT
06 – ELECTRIC PLUG
07 – GEAR/NEUTRAL SELECTOR ( L N R)
08 – ELECTRICAL SAFETY DEVICE
09 – ELECTRICAL CONTROL BOX
10 – TRANSPARENT OIL LEVEL PORT
11 – ELECTRIC MOTOR
12 – HANDGRIP
13 – START-STOP SWITCH
14 – PROTECTION FUSE
15 – TORQUE SELECTOR
The impact wrench is supplied complete with the following accessories:
–3 pcs.“CLIP-NR” retaining circlip for most common sockets with
grooved diameter between 47 and 57 mm (1.85 and 2.25 in.)
–1 pc.“CLIP-NR57” retaining circlip for sockets with grooved
diameter between 57 and 67 mm (2.25 and 2.64 in.)
WARNING ON THE USE OF ELECTRICAL EXTENSION CABLES:
The Impact wrench is fitted with a 1,5m long supply cable. Any extension cable used must
be in proper working order and have an Earthing connection.
The extension cable must be fully extended and not exceed 15m (50ft) in length. In order
to safely provide the maximum output, the extension cable must have 3 conductors, each
at least:
- 3x1,5 mm2(3x16 AWG) for the NR-13E
- 3x2,5 mm2(3x13 AWG) for the NR-13E-110
2. DESCRIPTION (Ref. to Fig. 1)
6
Always disconnect the power supply before any intervention on the machine, changing
accessories, maintenance etc.
Anyaccessory(extension,adapter,joint,socket)mustbespecifiedforusewithimpacttools.
The use of unsuitable accessories could lead to breakage.
3.2) Assembly / disassembly of sockets (available separately)
The wrench is preset to receive sockets available on the market having the following features:
– Specified for impact tooling.
– Assemble on to 25.4 mm (1”) square shaft with through bore.
Before use, always check to make sure the socket shows no signs of breakage or particular
wear. If the socket does not fit tightly on the square shaft this could result in a loss of power and
excessive wear of components.
To assemble the socket (Ref. to Fig. 7 page 52):
1Slide the socket onto the square shaft (08) lining up the bores of the socket and the shaft (Ref. to
Fig. 7a).
2Fully insert the central split pin of “CLIP-NR”into the through bore, ensuring the sprung arms are
correctly located in the slot around the socket (Ref. to Fig. 7b).
To disassemble the socket, extract “CLIP-NR”by simultaneous lateral pushing on both ends of the
sprung arms (Ref. to Fig. 7c).
Keep the “CLIP-NR” in a safe place to avoid loss or damage.
ENGLISH
02H
FIG. 2
02V 15V
15H
3.1) Control grip
The control grip has been designed to
provide easy and comfortable access to
the operating buttons both in vertical
and horizontal positions (Ref. to fig. 8,
9). Refer to fig. 2 and operate as follows:
Horizontal use - Hold the control grip so
as to use SAFETY INTERLOCK (15H) and
OPERATING BUTTON (02H).
Vertical use - Hold the control grip so
as to use SAFETY INTERLOCK (15V) and
OPERATING BUTTON (02V).
To avoid accidental start, the safety
interlock must always be pressed before
the operating button is activated.
3. INSTRUCTIONS FOR USE
01
7
3.3) Torque adjustment (Ref. to Fig. 3)
The wrench is equipped with a system which allows torque limitation
on tightening and loosening.
For particular requirements it is possible to vary the torque by means
of a 5 position selector (15).
To select different torque values, simply turn the selector in one di-
rection or the other.
Usually selector (15) is set:
–in the tightening phase on low torque settings,
pos. 1 - 2 - 3.
–in the loosening phase on high torque settings,
pos. 3 - 4 - 5.
3.4) Setting the rotation direction (Ref. to Fig. 4)
The rotation direction of the shaft is set using the 3 position
selector (07):
: right sense of rotation, to tighten.
: idle position (main shaft gears disengaged).
: left sense of rotation, to loosen.
Adjustment of selector (07) must always be carried out with the motor switched off or
idling, to ensure correct engagement of gears.
3.5) Operation
Before using the machine always check the correct functioning of the electrical safety
device (see § 3.6). Do not use the machine if the device functions incorrectly.
The machine must only be connected to correctly earthed sockets.
With the impact wrench placed on a flat surface, carry out the following in the order shown:
– Choose the socket appropriate to the work to be carried out and assemble it on the square shaft
(see § 3.2).
– Check that the nominal supply voltage corresponds to the value shown on the machine label
then connect the electric plug (06) to the mains.
– Push the“RESET”button of the electrical safety device (08).
– Make sure the torque selector (15) is adjusted to the torque setting required (see § 3.3)
– Set the rotation direction of the wrench (see § 3.4).
– Move switch (13) to“I”position.
– Lift the wrench and move it to the work location.
ENGLISH
FIG. 3
07
FIG. 4
15
Reference
8
ENGLISH
– Position the socket over the head of the screw, bolt or nut, so it is completely inserted into the
socket (Ref. to Figs. 8 and 9).
– Keeping a tight grip the wrench increase the speed of the motor to the number of revs required
by using the operating push button (02): in this way the impact striker will come into action with
consequent tightening/loosening of the fastening device.
– On finishing the operation, release the button.
The impact wrench can be used independently or in conjuntion with the Cembre support trolley
(Ref. to Figs. 10, 11) and appropriate interface device (see § 6).
– The impact wrench can be used in vertical position with support trolley by fitting interface device
type KCS-NR .
– The impact wrench can be used in horizontal position with support trolley by fitting interface
device type KHOR-NR.
3.6) Safety device (Ref. to Fig. 5)
The machine is fitted by an automatic power supply
switch-off device that protects the operator against
accidental starting.
During the use of the machine, in case of sudden fall or lack of electric
supply, the device intervenes cutting the supply off.
In order to re-set the machine rearm the device by pressing the “RESET”
button.
Tocheckthecorrectfunctioningofthesafetydeviceproceed(08)asfollows:
– Connect the plug to the electricity supply.
– Press the button“RESET” to close the switch.
– Press the button “TEST” to open the switch and prove the automatic
switch-off function.
3.7) Warning
The mains supply cable must be in perfect condition and correctly installed, otherwise it must be
replaced immediately.
Shoulditbenecessarytoextendthemainscable,use3core(2phases+earth)cableofsuitablesection.
Never pull the cable to disconnect it from the mains supply.
Keep the cable away from heat, oil and sharp edges.
3.8) Protection fuse (Ref. to Fig. 6)
The machine is equipped with fuse (14) protection of
electric motor:
NR-13E: 16A (6,3X32) delayed action fuse.
NR-13E-110: 30A (6,3X32) delayed action fuse.
Incaseofreplacement,useonlyexactequivalentfuses.
STATUS INDICATOR:
RED: presence of voltage,
switch closed.
WHITE: switch open.
FIG. 6
14
08
FIG. 5
9
ENGLISH
Alwaysdisconnectthepowersupplybeforeanymaintenanceoperationonthemachine.
Never open the electrical control box when the machine is connected to the mains supply.
4.1) ORDINARY MAINTENANCE
Avoid placing the wrench on dusty or muddy ground.
After each day’s use, carefully clean the wrench with a cloth making sure to remove any dirt it has
picked up, paying particular attention to moving parts and the anvil zone.
Carry out the following operations at regular intervals:
– With the impact wrench in horizontal position, check the level of the oil in the gearbox/re-
duction gear through the transparent port (10) (Ref. to Fig. 12a), if necessary top up (see §
4.2.3).
– Check and if necessary tighten all nuts and bolts.
– Check the rubber shock absorbers which dampen anvil vibrations at the handgrip.
4.2) EXTRAORDINARY MAINTENANCE
4.2.1) Checking the impact unit
The impact striker and anvil are subject to wear. Should a noticable loss of torque be detected over
intense and/or prolonged operation, check these components for wear.
4.2.2) Changing grease in the impact unit (at least once a year).
Under normal operating conditions, replace the grease in the unit at least once a year, to maintain
efficiency and performance.
Maintenance operations described in § 4.2.1 and 4.2.2 require qualified personnel.
4.2.3) Changing oil in the gearbox/reduction gear (every 4 years)
To top up or change the oil in the gearbox/reduction gear:
– Turn the impact wrench over.
– Using a 5mm Allen wrench, unscrew the cap with magnetic insert (T) (Ref. to Fig. 12).
– To change the oil, lean the wrench over to facilitate complete emptying of the oil.
– Carefully remove any metal residue from the magnetic insert (T).
– Add oil, MAX. 250 ml.
– Replace the cap (T) and screw it on tightly.
Ensure that used oil is disposed of in accordance with current legislation.
Always use clean recommended oil, see § 1.
Do not use old or recycled oil.
4. MAINTENANCE
10
ENGLISH
Switch (13) in“0” position.
Loss of electrical supply.
Intervention of the electric safety
device (08).
Fuse is faulty.
Motor brushes are worn.
Loss of electrical supply and con-
sequent intervention of the safety
device.
Motor overheating and fuse
intervention.
Screws loose.
Striker or anvil worn.
Selector (15) in wrong position.
Electrical extension cable not
suitable.
Selector (07) in “N”position.
Move switch to“I” position.
Check the proper connection of the electric plug (06)
to the electrical supply.
Press the“RESET” button on the device.
Replace the fuse (see § 3.8).
Change motor brushes (see § 4.2.4).
Check the safety device and reset (see § 3.6).
Replace the fuse (see § 3.8).
Tighten the lock nuts.
Check for wear (see § 4.2.1)
Increase the torque using the selector (see § 3.3)
Check the characteristics of the extension cable.
Use selector (see § 3.4).
- Motor does not start :
- Motor stops while
in use:
- Oil leak from gear/reduc-
tion gear unit:
- Noticabledropinimpact
force:
- Limited tightening
torque:
- Motor started but
square shaft not
turning:
4.2.4) Changing the motor brushes (See Fig. 13)
After disconnecting the electric plug, check the degree of wear of the brushes; if necessary replace
them as follows:
– Using a 4 mm Allen wrench, remove the screws holding the two motor covers.
– Using a 3 mm Allen key unscrew the screw (V), lift the spring that holds the brush (S) and remove
it from its housing.
– Reposition the new brush by tightening up to the end the screw complete with washer.
– Reassemble the two protective covers.
4.3) PREPARATION FOR LONG INACTIVITY
– Using a clean cloth, wet it with oil and rub all the metal parts of the machine.
– Store the machine in a dry place in its metal case (see § 6), protecting it from knocks and con-
tamination.
5. TROUBLESHOOTING GUIDE
SYMPTOM POSSIBLE CAUSE REMEDY
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