NSK NLZ, NLZ E Operation Manual
English
Contents
1. Introduction ..................................................2
1-1 Outline .......................................................................2
1-2 User and Indication for Use .........................................2
1-3 Precautions for handling and operation ........................3
1-4 Classification of Equipment .........................................6
2. Components .................................................7
2-1 List of components .....................................................7
2-2 Part Names of Control Unit and Main Unit ....................8
3. Preparations for Use ...................................12
3-1 Installing the Main Unit and the Control Unit ...............12
3-2 Connecting the Tubing ..............................................13
3-3 Connecting the Motor Cord .......................................14
3-4 Connecting the AC Adapter .......................................14
3-5 Connecting the AC Power Cord ..................................15
3-6 Connecting / disconnecting the motor ........................15
and motor cord
3-7 Connecting / disconnecting the motor ........................16
and the handpiece (option)
3-8 Changing the settings for various functions ................17
3-9 Check before treatment ............................................21
4. Operation Procedure ...................................22
4-1 General Application Mode .........................................23
4-2 Rotary Endo Mode (NLZ E only) .................................24
4-3 Reciprocating Endo Mode (NLZ E only) .......................27
4-4 Contra-Check Function .............................................28
4-5 Sound Volume ..........................................................33
(When the load exceeds the set torque limit value,
Error etc.)
4-6 Last Memory Function ..............................................34
4-7 Initializing Program ................................................... 34
(Restoring the Factory Setting)
4-8 Overheat Prevention .................................................36
English
5. Post-use Maintenance ................................38
5-1 Cleaning at point-of use (Motor) ................................38
5-2 Cleaning, Disinfecting (Motor) .................................... 40
5-3 Packaging, Sterilizing, ...............................................41
Drying and Storage (Motor)
5-4 Cleaning, Disinfecting ............................................... 42
(Control unit, motor cord)
6. Maintenance ............................................... 43
6-1 Replacing the O-rings (Motor insert) ..........................43
6-2 Replacing the O-rings (Motor rear side) ......................44
6-3 Periodical Maintenance Checks .................................45
7. Troubleshooting ..........................................46
7-1 Error Code ...............................................................46
7-2 Troubles and Actions ................................................. 47
8. Specifications .............................................48
8-1 Specifications ...........................................................48
8-2 Symbol ....................................................................49
9. After-sales Service ......................................50
9-1 Warranty ..................................................................50
9-2 Spare Parts List ........................................................50
9-3 Option Parts List .......................................................51
9-4 Disposing product .....................................................51
10. EMC Information .........................................52
(Electromagnetic Compatibility Information)
1
Introduction
1
CAUTION
U.S. Federal law restricts this device to be used by or on the order of a licensed dental professional.
Thank you for purchasing the NSK NLZ E / NLZ motor system.
This product can be connected to a dental unit (air unit), which is currently in use, to equip it with a
brushless electric micromotor with LED light.
Please read this Operation Manual carefully before use for operation instructions and maintenance
guidelines to increase overall product life span. Keep this Operation Manual in a handy place for future
reference.
Outline
1-1
NLZ Motor Systems are available in two models.
NLZ Motor Set, which consists of the main unit, the control unit (Endo function not available) and the
Motor.
NLZ E Motor Set, which consists of the main unit, the control unit (Endo function available) and the Motor.
Optional
User and Indications for Use
1-2
User:
U.S. Federal law restricts this device to be used by or on the order of a licensed dental professional.
Indications for Use:
The NLZ Motor System is intended for use by dental professionals in the performance of dental restoration,
prophylaxis and endodontic procedures.
The NLZ Endo is intended for use by dental professionals in the performance of dental endodontic
procedures.
2
Introduction
1-3
Precautions for handling and operation
ŘPlease read these precautions carefully and use only as intended or instructed.
ŘSafety instructions are intended to avoid potential hazards that could result in personal injury or damage
to the device. Safety instructions are classified as follows in accordance with the seriousness of the risk.
Class Degree of Risk
WARNING
CAUTION
NOTICE
ŘDo not disassemble, adjust or alter the motor or handpiece except as recommended by NSK in this Operation
Manual.
ŘDo not handle the AC power cord or any other components of this system with wet hands. Touching electrical
devices with wet hands may result in electric shock.
ŘAvoid splashing water into or near the control unit. Otherwise it could cause short circuits and lead to fire and/or
electric shock.
ŘDo not allow any impact on to the product. Do not drop the product. Doing so might cause electric shock or
malfunction.
ŘDo not operate this product close to patients with cardiac pacemakers. It may affect the function of pacemaker.
ŘKeep this product away from explosive substances and flammable materials. Also, do not use this product on or
near patients who have been administered flammable anesthesia, such as dinitrogen monoxide.
ŘIf the product overheats or smells like burning, immediately turn OFF the power switch, disconnect the power
plug (by pulling the plug, not the cable) and contact your Authorized NSK Dealer.
ŘWhen using of this equipment adjacent to or stacked with other equipment, this equipment and the other
equipment should be observed to verify that they are operating normally.
ŘConnect the handpiece to the motor, rotate before using to check for motor/handpiece vibration, noise or
overheating. If any abnormalities occur, stop using the product immediately and contact your Authorized NSK
Dealer. (Refer to "3-9 Check before treatment")
ŘShould the product function abnormally during use, stop using the product immediately and contact your
Authorized NSK Dealer.
ŘIf the product has not been used for a long period, rotate the motor/handpiece and check for noise, vibration or
overheating before use.
<Motor, Handpiece (Option)>
ŘImmediately after a treatment (within 1 hour), perform maintenance and then store the motor and the handpiece.
Failure to properly maintain the motor and the handpiece may lead to overheating, causing infection, burn
injuries or product failure. Follow maintenance procedures as instructed in this manual and operation manual of
the handpiece.
Hazard that could result in serious injury or damage to the device if the
safety instructions are not correctly followed.
Hazard that could result in light or moderate injury or damage to the device
if the safety instructions are not correctly followed.
General product specification information highlighted to avoid product
malfunction and performance reduction.
WARNING
English
3
Introduction
CAUTION
ŘPlace the most priority on patient safety.
ŘThe product is designed only for clinical dental use by qualified personnel. This product must not be used for oral
surgery, implants or dental laboratory work.
ŘThis product may be used only by Dental Professionals, such as Dentists in dental clinics or other medical
premises including hospitals.
ŘThe product must be used in a dental clinic, hospital or other dental institution.
ŘThe user shall be responsible for any judgment that relates to the application of this product to a patient.
ŘThe user is responsible for the operational control, maintenance and continual inspection of this product.
ŘDo not use the product outside the specified use environment. It may cause malfunction. (Refer to “8-1
Specifications”)
ŘOperators and all others in the area must wear eye protection and a mask when operating this handpiece.
ŘUse only the AC adapter, AC power cord provided with the product. Never use other AC adapters. Doing so might
cause a malfunction.
ŘThe AC power cord is the means to cut off commercial power supply. Make sure that the AC power cord can be
pulled out from the power outlet without delay in an emergency. Do not place any articles within 15cm of the AC
power cord.
ŘWhen dirt adheres to the control unit, main unit or AC Adaptor, turn OFF the power, wipe off the dirt with a firmly
wrung moist cloth, and then wipe thoroughly with a soft, dry cloth.
ŘDo not use the following fluids to wipe, immerse or clean the product; strong / super acid water, strong acid /
alkaline chemicals, chlorine-containing solutions, solvents such as benzene or thinner. (Refer to “5. Post-use
Maintenance”)
ŘPerform regular function and maintenance checks. (Refer to “6-3 Periodical Maintenance Checks”)
ŘThis product is rated Medical Electrical equipment. EMC (Electromagnetic compatibility) is described in the
documentation included. Installation and use of this product requires special precautions regarding EMC
according to the EMC information. (Refer to “10. EMC Information (Electromagnetic Compatibility Information”))
ŘPortable and mobile RF communications equipment can affect Medical Electrical equipment. Do not use RF
equipment near the product.
ŘUse only authorized components. Use of other components might impair the EMC performance of the product.
ŘMake sure that each part is properly connected. Improper connections might cause faulty operation, LED lighting
failure and water or air leakage.
ŘThe AC power cord included with the product has the length of 2 meters. Bundle and fix the extra cord to prevent
the operator or the patient from inadvertently stepping on it.
<Control Unit, Main Unit>
ŘWhen disconnecting the AC power cord, motor cord or other cords, hold the cords by their plug and pull the plug
out. Holding and pulling the cord might snap the wiring in the cord and cause a malfunction.
ŘWhen installing the control unit, motor and other components, provide enough room to avoid bending or twisting
the tubing or the cord.
ŘDo not sterilize the control unit, main unit, AC adapter, AC power cord, motor cord.
4
Introduction
<Motor, Handpiece (Option)>
ŘThe output torque changes according to the type of handpiece connected to the motor, operating conditions
and other factors. Be sure to use a handpiece made by NSK. (Refer to “4-4 Contra-Check Function”) Use of a
handpiece made by a different manufacturer might cause trouble such as disparity between the preset and the
output torque.
ŘEnsure that the motor has completely stopped rotating before handling. Connecting or disconnecting the
handpiece while the motor is rotating may result in injuries or damage the handpiece.
ŘDo not point the light illuminated from the motor and handpiece directly into patient's or operator's eyes. Doing
so might damage the eyes.
ŘThe motor is delivered in a non-sterile condition and must be performed steam sterilization prior to use.
ŘDo not lubricate the motor. It may cause overheating and product failure.
ŘUse moisture- and dust-free air as the supply air. Mixing in of moisture might cause malfunction or heat
generation.
ŘConnect only ISO 9168-compliant, Type 2 (Midwest 4 holes), or Type 3 (ISO-compliant standard 4 holes with
light) tubing.
ŘMake sure to supply coolant air. Otherwise, the motor/handpiece surface might reach a temperature of 51°C or
higher.
NOTICE
Ř
During operation, the motor and motor cord may affect computers, LAN cables in the vicinity of use.
Noise could be heard during operation near a radio receiver.
Ř
Use the "Power Key" to turn ON/OFF the power on a daily basis. If the system is not used for a long
period of time or if the system malfunctions, turn OFF the power of the main unit, disconnect the
power cord, and drain water from main unit, tubing and motor cord.
Ř
For details on handling the handpiece, refer to the Operation Manual of the handpiece.
Ř
Only authorized service personnel should inspect inside the product by following the instructions in
the service manual. Leave the product with your Authorized NSK Dealer, if necessary.
Ř
No special training is required to operate this device.
Ř
Drain water from the main unit, turbing and motor cord, if the main unit is not to be used for a long
time.
English
5
Introduction
Classification of Equipment
1-4
ŘType of protection against electric shock:
- Class ll equipment
ŘDegree of protection against electric shock:
- Type B applied part:
ŘMethod of sterilization or disinfection recommended by the manufacturer:
- Refer to ”5-3 Packaging, Sterilizing, Drying and Storage (Motor)”
ŘDegree of protection against ingress of water as detailed in the current edition of IEC 60529:
- Control Unit: IPX0 (Not protected)
ŘDegree of safety of application in the presence of a flammable anesthetic mixture with air or with oxygen
or nitrous oxide:
- Equipment NOT suitable for use in the presence of a flammable anesthetic mixture with air or with oxygen
or nitrous oxide.
ŘMode of operation:
- Intermittent operation ( ON:3 min, OFF:10min.)
(Applied parts: Motor, Handpiece)
6
Components
2
2-1
List of components
1
5
9
No. Part Name Quantity Remark
1 Control unit 1
2 Main unit 1
3 Motor 1 4 Motor cord 1 Cord length: 1.8m
5 Purge nozzle 1
6 AC adapter 1 Cord length: 5m
7 AC power cord 1 Cord length: 2m
8 O-ring set 1set
9 Mounting bracket 1 For the main unit
Mounting screws
10
and nuts
11 Cable tie 2 For fixing the link cable
2
6
10 11
The control unit and the main unit are connected via the link cable.
For purging excess oil (compatible with ISO 3964-compliant
handpieces)
Spare parts
For the motor insert joint (Black: 3pcs., Blue: 1 pc.)
For the pipes at the rear side of the motor (Black: 5 small pcs.)
1set
M5x30 screw (2 pcs.), M4x30 screw (2 pcs.), M4 flat head screw (2
pcs.), M5 nut (2 pcs.), M4 nut (2 pcs.)
3
7
English
4
8
7
Components
Part Names of Control Unit and Main Unit
2-2
Link cable
(cable length: 1m)
LCD Display
Control panel AC power cord connector
< Control Unit > < Main Unit >
Power switch
Motor cord connector
Tubing connector
8
Components
LCD Display and the Control Panel of the Control Unit
< NLZ E >
F3G2H
E
D
C
8
7
6
5
4
< NLZ >
F3G
English
I
A
B
9
10
11
1
E
D
C
8
7
6
5
4
2
A
B
10
11
1
9
Components
No. Key Name Display Function
1
2
3
Power Key -
Memory Key
Torque Key
(NLZ E)
Setting Key
(NLZ)
Press once to turn ON the power. When the power is ON,
hold it down for more than two seconds to turn OFF the
power
In General Application Mode:
Motor speed can be adjusted between 100 and
40,000 min-1.
G
In Rotary Endo Mode:
Motor speed can be adjusted between 100 and
6,000 min-1.
*Display value changes interlocked with the gear ratio.
When gear ratio is set by each time pressing this key you
can adjust the torque.
Rotary Endo Mode
B
Gear Ratio Torque Range (N·cm) Increment (N·cm)
1:1 0.3 - 3.0 0.1
4:1 0.8 - 6.0 0.4
6:1 1.0 - 6.0 1.0 - 1.2:0.2
Change the setting as described in “3-8 Changing the
settings for various functions”
Change the setting as described in “3-8 Changing the
settings for various functions”
1.2 - 6.0:0.6
In General Application Mode:
Motor speed can be adjusted between 100 and
40,000 min-1.
4
5
6
Speed Key
Check Key
Light Key
A
In Rotary Endo Mode:
Motor speed can be adjusted between 100 and
6,000 min-1.
*Display value changes interlocked with the gear ratio.
Check the status of the handpiece as described in “4-4
C
Contra-Check Function”
Set light intensity (Strong·Moderate·Weak·OFF)
By each time pressing this key you can change the
volume from OFF -> intensity 1 -> intensity 2 -> intensity
D
3 and then back to OFF again
* The light can be turned on for 5 seconds by pressing the
key while the motor is stopped.
10
Components
No. Key Name Display Function
Set the volume of the notifying sound generated when
reaching a set torque limit value or when errors occur
(High·Low·OFF)
By each time pressing this key you can change the
7
Volume Key
volume from OFF -> volume 1 -> volume 2 and then
E
back to OFF again
CAUTION
When the volume is set to OFF, there will be no alarm
sound. Care should be taken when using the system with
the volume set to OFF.
By each time pressing this key you can switch the gear
ratio
8
Gear Key
from 1:5 -> 1:1 -> 4:1 -> 6:1 -> and then back to 1:5
F
again – in General Application Mode
from 1:1 -> 4:1 -> 6:1 -> and then back to 1:1 again –
in Rotary Endo Mode
By each time pressing this key you can switch the mode
Auto Rev. Key
9
(NLZ E)
*Rotary Endo
Mode Only
between AUTO STOP -> AUTO REVERSE STOP -> AUTO
REVERSE FORWARD and then back to AUTO STOP again
H
AUTO STOP
AUTO REVERSE
STOP
Toggles between 3 application modes as below
Mode Key
(NLZ E)
10
Setting Mode
I
General
Application Mode:
No display
Rotary Endo
Mode:
Key
(NLZ)
Change the setting as described in “3-8 Changing the
settings for various functions”
English
AUTO REVERSE
FORWARD
Reciprocating Endo Mode:
11
Rev. Key -
The rotation direction can be changed by this key. The
LED lights up during reverse rotation.
11
Preparations for Use
3
CAUTION
Make sure that each part is properly connected. Improper connections might cause faulty operation, LED lighting
failure and water or air leakage.
Installing the Main Unit and the Control Unit
3-1
Fix the main unit to the dental unit using the
1
screws. As shown below:
M4x30, M5x30
with the nut
( included)
M4 flat head screw
( included )
Bundle the link cable appropriately and fix it by cable tie.
3
Cable tie
(included)
If you wish to install as shown below, optional parts are available for purchase.
4
( Refer to “ 9-3 Optional Parts List ” )
2
Place the control unit on the tray of the dental
unit.
Installation example using
NLZ STAY
Installation example using
NLZ MOUNTING PLATE
12
Preparations for Use
CAUTION
ŘKeep the main unit away from water.
ŘThe control unit incorporates a LCD panel. Place the unit where the operator can see the display.
ŘDo not bend the tubing forcibly when putting the main unit in place. Allow some extra space for tubing to avoid
pinching or bending it.
3-2
Connecting the Tubing
Align the tubing from the dental unit and the tubing connector at the
back of the main unit (1). Insert it firmly and tighten it completely
(2).
①
IN
OUT
AC28V
POWER
CAUTION
ŘBe sure that there is no air or water coming from tubing when attaching it to the main unit.
ŘUse moisture- and dust-free air as the supply air. Mixing in of moisture might cause malfunction or heat
generation.
ŘScrew the nut properly without unnatural force, when you plug in tubing connector and motor cord connector.
Avoid cross threading.
ŘConnect only ISO 9168-compliant, Type 2 (Midwest 4 holes), or Type 3 (ISO-compliant standard 4 holes with
light) tubing.
ŘAir requirement: dry, free from contamination and oil. Use a compressor with a dry air system. Install an air filter
if necessary. Blow out the lines before installation.
ŘDo not pull the tubing using more than necessary force.
ŘMake sure to supply coolant air. Otherwise, the motor/handpiece surface might reach a temperature of 51°C or
higher.
English
②
13
Preparations for Use
C
Connecting the Motor Cord
3-3
Align the motor cord plug and the motor connector at the back of the
main unit (
1
). Insert it firmly and tighten it completely (2).
CAUTION
ŘGently screw in the nut of the motor cord plug when tightening it.
ŘDo not pull the motor cord using more than necessary force.
Connecting the AC Adapter
3-4
Check that main power switch is off. ( side)
1
OUT
A
POWER
IN
OUT
AC28V
POWER
Insert the AC adapter plug, with the arrow facing
2
up, into the AC power cord connector at the back
①
of the main unit firmly.
IN
OUT
AC28V
POWER
②
14
Preparations for Use
3-5
Connecting the AC Power Cord
Insert the AC power cord into the inlet of the AC
1
adapter.
Insert the AC power cord plug to commercial
2
power supply outlet.
CAUTION
ŘDuring this procedure the power switch of the main unit should remain OFF.
ŘThe AC power cord included with the product has the length of 2 meters. Bundle and fix the extra cord to prevent
the operator or the patient from inadvertently stepping on it.
ŘUse only the AC adapter, AC power cord provided with the product. Never use other AC adapters. Doing so might
cause a malfunction.
ŘWhen disconnecting the AC power cord, motor cord or other cords, hold the cords by their plug and pull the plug
out. Holding and pulling the cord might snap the wiring in the cord and cause a malfunction.
3-6
Connecting / disconnecting the motor and motor Cord
English
<Connecting> <Disconnecting>
Align and insert the pins of the connector carefully and
firmly into the pin holes of the motor, and fasten the
motor nut securely.
Pin
Motor
Motor Cord NutMotor Cord Connector
Hole
Tighten
Loosen
Unscrew and detach the motor cord nut, and gently
pull out the motor cord.
15
Preparations for Use
Connecting / disconnecting the motor and the handpiece (option)
3-7
<Connecting>
Insert the E-type handpiece into the motor insert,
1
and turn until it clicks as the positioning pin on
the handpiece falls into positioning hole on the
motor.
<Disconnecting>
Simply pull out the handpiece from the motor.
MotorHandpiece (option)
Confirm that the handpiece is securely connected
2
to the motor.
CAUTION
ŘEnsure that the motor has completely stopped rotating before handling. Connecting or disconnecting the
handpiece while the motor is rotating may result in injuries or damage the handpiece.
ŘBe sure to adjust the rotation speed of the motor within the allowable rotation speed of the handpiece (option).
ŘLubricated handpiece should stand and allow oil to drain prior to steam sterilization cycle. Attach to the motor
after the excess oil has been completely drained. If the oil enters the motor, it may cause malfunction of the
motor.
ŘAfter lubrication, keep the handpiece standing apart from the motor. Connect the handpiece to the motor when
using.
ŘDo not allow water to enter the motor. It may cause malfunction of the motor.
ŘBefore each use, operate the motor outside the patient's oral cavity. If any abnormality, such as vibration, noise
or overheating occurs, stop using the product immediately and contact your Authorized NSK Dealer. (Refer to
"3-9 Check before treatment")
16
Preparations for Use
3-8
Changing the settings for various functions
Settings for various functions can be changed from their default values. This is to make the system easier
to use, when it is used for the first time after purchase. You will need to enter into the setup mode, change
the settings and save the new ones as below:
Turn ON ( I side ) the power switch on the main
1
unit.
Hold down the Mode Key* for more than two
3
seconds. With an alarm sound, "System" and
"Setup" on the LCD display will start blinking and
the system will enter into the setup mode.
* The Setting Mode Key in case of NLZ
Press the Power Key on the control unit.
2
Blinking
English
2
17
3
Preparations for Use
In the setup mode, the function item can be
4
selected using the Speed Key (+/-) (
the value can be changed using the Torque Key
(+/-)* (2).
* The Setting Key (+/-) in case of NLZ
1
2
4-
4-
Change the settings by pressing the Torque Key
6
(+/-). * The Setting Key (+/-) in case of NLZ
1
), and
Once a value is changed, the new value will
5
blink. Press the Mode Key quickly to save the
new value. Once saved, this new value will stop
blinking.
6
5
18
Preparations for Use
<Setting each function item>
Display Function item Factory Setting Setting Range
Air pressure for motor
startup speed:
This is the lower limit
Foot Air Calibration:
This function enables
you to use the maximum
speed 40,000 min-1, even
though the air pressure
of the dental unit is not
high enough, by setting
air pressures for “motor
startup speed” and
“maximum motor speed”.
Delay time for the light:
This function sets the delay time for the white illumination
lamp going off after the motor stops.
The notifying sound :
This function sets the volume for the operation tone
when a key is pressed.
Contra-Restriction:
This function automatically slows down and stops the
rotation of the motor when the checking result through
Contra-Check is either “OIL” or “NG”. The motor cannot
be activated when the checking result is “NG” blinking
which shows the status of handpiece defect. (Refer
to “4-4 Contra-Check Function” and “4-8 Overheat
Prevention”)
Contra-SAFE:
This is a function to stop the rotation of the motor when
continuous motor high-load current is detected with a 1:5
increasing handpiece.*
In this mode, there are selectable three sensitivity levels:
Fast, standard and Slow and the “Fast” setting offers
the most sensitive response. (Refer to “4-8 Overheat
Prevention”)
*Use NSK handpieces : the model of Z95L, Z85L, X95EX,
X95L, X95, M95L, M95, X85L, X85 of 1:5 Gear Ratio.
of the air pressure at
which the motor starts to
operate.
Air pressure for maximum
motor speed:
This is the upper limit of
the air pressure at which
the motor will run at its
maximum speed.
This value can be set
only when there is an
air supply at a pressure
of equal or higher than
1.5bar.
0.5bar
(0.05MPa)
1.8bar
(0.18MPa)
3 seconds
High=2
ON=1
Standard=2
English
0.3 – 3.0bar
(0.03 - 0.3MPa)
(@ 0.1bar
increments)
1.5 - 3.0bar
(0.15 - 0.3MPa)
(@ 0.1bar
increments)
0 - 10 seconds
(@ 1sec.
increments)
High=2
Low=1
OFF=0
ON=1
OFF=0
Fast=3
Standard=2
Slow=1
No stop=0
19
Preparations for Use
WARNING
NSK recommends to always activate both functions of " Contra-Restriction" and "Contra-SAFE" because using
these functions under “Off” or “No stop” may increase the probability or severity of overheating of defective or
poorly maintained handpieces.
NOTICE
Set the lower air pressure limit at motor start-up, lower than the upper air pressure limit at maximum
rotation of the motor.
After you are finished making changes, hold down the
7
Mode Key again for more than two seconds to return to
the regular screen.
NOTICE
Notifying sound will not be generated when the sound volume is set to OFF. Be aware of this while using the
system when the sound volume setting is OFF.
7
<Notifying sound during key operation>
Items Notifying sound
When turning on the power 1 short beep
When turning off the power 1 short beep followed by 1 long beep
When pressing the keys 1 short beep
When pressing and holding the Speed Key/Torque Key
When reaching upper/ lower setting limit, when
becoming inoperable
When switching to the function setting mode 1 long beep
When storing into the memory 2 short beeps
1 short beep followed by successive short beeps while
the key is being pressed.
3 short beeps
20
Preparations for Use
3-9
Check before treatment
ŘBefore each use, operate the motor outside the patient's oral cavity.
ŘMake sure the light is working properly and there is enough water spray.
CAUTION
If any abnormality, such as vibration, noise or overheating occurs, stop using the product immediately and contact
your Authorized NSK Dealer.
English
21
Operation Procedure
4
Refer to “2-2 Part Names of Control Unit and Main Unit”, which explains the functions of the system in
detail.To start operation, insert the power cord plug into an outlet and turn ON the equipment. The LCD
Display will light. This product has two power control functions. The "Power Key" on the control panel and
the "Power Switch" on the main unit. Use the "Power Key" to turn ON/OFF the power on a daily basis. Use
the "Power Switch" to turn OFF the power when the equipment is not being used for a long period of time
or when the equipment is malfunctioning.
<Mode explanation>
Both NLZ Motor Set and NLZ E Motor Set provide general application mode which is used for dental
restoration and prophylaxis. In this mode, the rotation speed can be adjusted.
The “Rotary Endo Mode” and “Reciprocating Endo Mode” are used for the endodontic procedure, which
are provided only under NLZ E Motor Set.
Rotary endo mode provides low rotation speed for use with gear ratio 1:1, 4:1, and 6:1 handpieces.The
value of rotation speed and torque can be adjusted.
(Refer to “4-2 Rotary Endo Mode (NLZ E Only) <Auto Reverse Function>)
Pressing the “Check” key to perform “Contra-Check” Function before use, the status of a handpiece can
be evaluated as “OK”, “OIL”, “NG” or “NG Blinking”. When the handpiece is evaluated “OK”, the ContraCheck Function works as a torque calibration. (Refer to “4-4 Contra-Check Function)
Under the reciprocating endo mode, automatic unequal bidirectional rotation is provided. The user can not
alter the preset parameters.
<Mode selection>
System General Mode Rotary Endo Mode Reciprocating Endo Mode
NLZ Motor Set
NLZ E Motor Set
ݲ
ݲݲݲ*
Not Available Not Available
*The “Reciprocating Endo Mode” can be operated only with the NLZ Endo Contra Angle handpiece and WaveOne file.
(Refer to “4-3 Reciprocating Endo Mode (NLZ E only)”)
22
Operation Procedure
4-1
General Application Mode
Select the program # - 6
2
programs can be selected
Select the gear ratio
3
according to the handpiece
1:5, 1:1, 4:1, 6:1
Set the light intensity
6
Strong
Moderate
Weak
OFF
Select the General
1
Application Mode
(NLZ E only)
Select the rotation
5
direction, FWD / REV
Select the proper speed required for the application
4
Gear Ratio Rotation Speed (min-1) Setting range (min-1)
1:5 500 – 200,000 20 – 100:10 Increment
1:1 100 – 40,000
4:1 30 – 10,000
6:1 20 – 6,600 50,000 – 200,000:5,000 Increment
100 – 1,000:100 Increment
1,000 – 5,000:500 Increment
5,000 – 50,000:1,000 Increment
English
NOTICE
ŘSince the NLZ Endo contra angle handpiece is only for endodontic treatment, it cannot be used for General
Application Mode.
ŘThe rotation speed of the bur, mounted to the handpiece, depends on the gear ratio of the handpiece.
ŘThe actual rotation speed is displayed during operation. The Max set speed is displayed when stopped.
ŘThe max set speed can be adjusted even during rotation by pressing the Speed Keys on the control panel.
Adjust the water spray of the handpiece at the dental unit
7
Contra-Check
8
Perform Contra-Check before treatment. (Refer to “4-4 Contra-Check Function”)
23
Operation Procedure
The motor operation will be controlled by the foot pedal of the dental unit (also called Rheostat). Pressing the
9
pedal all the way down will run the motor up to the Max speed set at step 4
Memory setting
10
Press and hold the Memory Key for more than 2 seconds. After 2 short beeps the memory sign will stop blinking
and gear ratio and speed will be memorized in the selected program number (M1 through M6 is shown, so that
up to 6 programs can be stored in memory).
NOTICE
A blinking indicates that the program is not stored in the memory yet.
Rotary Endo Mode (NLX E only)
4-2
Select the program # - 6
2
programs can be selected
Select the gear ratio
3
according to the handpiece
1:1, 4:1, 6:1
Set the light intensity
Set the light intensity
8
OFFStrong Moderate Weak
Select the Auto-Reverse
6
Mode: AUTO STOP /
AUTO REVERSE STOP /
AUTO REVERSE
FORWARD
Select the Rotary Endo
1
Mode
Select the rotation
7
direction, FWD / REV
Select the proper speed recommended by
4
file manufacturers
Gear Ratio Rotation Speed (min-1) Setting range (min-1)
1:1 100 – 6,000
4:1 30 – 1,500
6:1 20 – 1,000
20 – 500:10 Increment
500 – 1,000:50 Increment
1,000 – 6,000:100 Increment
24
Select the proper torque recommended
5
by file manufacturers
Torque Setting Range (N･cm)
Gear Ratio
1:1 0.3 – 3.0 0.1 Increment
4:1 0.8 – 6.0 0.4 Increment
6:1 1.0 – 6.0
Setting range (N･cm)
1.0 – 1.2:0.2 Increment
1.2 – 6.0:0.6 Increment
Operation Procedure
NOTICE
ŘThe rotation speed of the file, mounted to the handpiece, depends on the gear ratio of the handpiece.
ŘThe actual rotation speed is displayed during operation. The Max set speed is displayed when stopped.
ŘThe max set speed can be adjusted even during rotation by pressing the Speed Keys on the control panel.
Adjust the water spray of the handpiece at the dental unit
9
Turn off the water flow of the dental unit due to lack of water flow circuit inside the NLZ Endo contra angle
handpiece.
Contra-Check
10
Perform Contra-Check before treatment. (Refer to “4-4 Contra-Check Function”)
NOTICE
Depends on the connected contra-angle handpiece, a short beep sound may occur when the rotation
starts, which is not a malfunction.
The motor operation will be controlled by the foot pedal of the dental unit (also called Rheostat). Pressing the
11
pedal all the way down will run the motor up to the Max speed set at step 4
CAUTION
ŘThe torque displayed in the Rotary Endo Mode varies according to the type of the handpiece or using condition.
Make sure to use an NSK-manufactured handpiece and perform the Contra-Check before use. The Contra-Check
will carry out torque calibration. (Refer to “4-4 Contra-Check Function”)
ŘUsing handpieces not manufactured by NSK may cause malfunction including discrepancy between set torque
limit value and the actual output torque.
English
Memory Setting
12
Press and hold the Memory Key for more than 2 seconds. After 2 short beeps the memory sign
stop blinking and gear ratio, rotation speed, torque and auto-reverse mode will be memorized in the selected
program number (M1 through M6 is shown, so that up to 6 programs can be stored in memory).
NOTICE
A blinking
indicates that the program is not stored in the memory yet.
25
will
Operation Procedure
<Auto Reverse Function>
By each time pressing the Auto Rev. Key you can switch the mode between AUTO STOP -> AUTO
REVERSE STOP -> AUTO REVERSE FORWARD and then back to AUTO STOP again
AUTO STOP AUTO REVERSE STOP AUTO REVERSE FORWARD
Explaining the above 3 Modes:
AUTO STOP
The handpiece starts in forward rotation. When a load reaches the set torque limit value, the motor rotation
stops with a beep sound. If the load continues, the set speed on the LCD Display starts blinking until the
foot pedal is released.
Load lower than
the set torque limit value
Forward rotation Stop
When load reaches
the set torque limit value
AUTO REVERSE STOP
The handpiece starts in forward rotation. When a load higher than the torque limit is applied, the file will
rotate in reverse with a beep sound. When the load is removed, the motor rotation stops and the set speed
on the LCD Display starts blinking until the foot pedal is released. If you want the motor to rotate again, repress the foot pedal.
Load lower than
the set torque limit value
Forward rotation Reverse rotation Stop
Load higher than
the set torque limit value
Reverse rotation when load continues,
stop when load is removed
26
Operation Procedure
AUTO REVERSE FORWARD
The handpiece starts in forward rotation. When a load higher than the torque limit is applied,
the file will rotate in reverse with a beep sound. When the load is removed, the file will return to normal
rotation (forward) automatically.
Load higher than
the set torque limit value
Reverse rotation when load continues,
return to forward rotation
when load is removed
4-3
Load lower than
the set torque limit value
Forward rotation Return to forwardReverse rotation
Reciprocating Endo Mode (NLZ E only)
The Reciprocating Endo Mode is preset for the NLZ Endo (6:1 reduction Endodontic Contra Angle
Handpiece) using with the WaveOne
®
reciprocating file made by DENTSPLY SIRONA Group. In this mode,
automatic unequal bidirectional rotation is provided and the user can not alter the preset parameters.
Please use the WaveOne
(WaveOne
®
is a registered trademark of DENTSPLY SIRONA Inc.)
Select the Reciprocating Endo Mode.
1
®
Reciprocating file to operate in this mode.
Turn off the water flow of the dental unit due to
2
lack of water flow circuit inside the NLZ Endo
contra angle handpiece.
English
Contra-Check
3
Perform Contra-Check before treatment. (Refer
to “4-4 Contra-Check Function”)
The motor operation will be controlled by the foot
4
pedal of the dental unit (also called Rheostat).
Unequal bidirectional rotation
CAUTION
The Reciprocating Endo Mode has been designed and verified exclusively for the NLZ Endo contra angle handpiece
and WaveOne® reciprocating file manufactured by DENTSPLY SIRONA Group. Using other contra angle handpieces
or files may result in gear’s premature wear, overheating, or file breakage.
27
Operation Procedure
Contra-Check Function
4-4
This function evaluates the state of the Contra Angle / Straight Handpiece as:
“OK” : The check result is acceptable
“OIL” : Needs a maintenance such as lubricating with oil
“NG” : There is a serious malfunction
WARNING
ŘDamaged handpiece, Foreign materials in the handpiece, Inadequate Maintenance, and Water Entrance are
risks for overheating/burn event. Those abnormalities appear as vibration, noise or overheating.Check handpiece
for those abnormalities before treatment, or it may cause overheating of handpiece and cause burn in patients.
ŘContra-Check function niether measures the temperature of overheating handpiece directly nor assures to
maintain handpiece safe temperature. As possible risk of overheating still remains even after Contra-Check,
make sure to always check for above abnormalities before treatment.
ŘIf any abnormality, such as vibration, noise or overheating occurs, stop using the handpiece immediately and
contact your authorized NSK dealer.
ŘThis function is only available for NSK Contra Angle /Straight Handpiece : models of Z95L, Z85L, X95EX, X95L,
X95, M95L, M95, X85L, X85 of Gear Ratio 1:5, Z25L, X25L, X25, X65L, X65, M25L, M25, M65 of Gear Ratio
1:1, Z15L, X15L, X15, M15L, M15 of Gear Ratio 4:1 and the NLZ Endo Contra Angle Handpiece of Gear Ratio 6:1.
ŘUse of incorrect handpieces may cause overheating.
NOTICE
ŘPerform this function before treatment to check the handpiece status.
ŘContra-Check function includes torque calibration under the Rotary Endo Mode.
Torque displayed in the Rotary Endo Mode varies according to the type of handpiece or it’s using condition. This
is a function to recognize the rotation torque of the attached handpiece and to adjust the generated torque into
the set torque limit value.
ŘAfter the Handpiece is evaluated as “NG” or “OIL” through the Contra-Check, the motor rotation is automatically
slowed down and stopped if the risk of overheating is detected. (Refer to “3-8 Changing the settings for various
functions”)
28
Operation Procedure
Select the Mode (NLZ E only)
1
Select the gear ratio of the attached handpiece
3
General Application Mode 1:5, 1:1, 4:1, 6:1
Rotary Endo Mode 1:1, 4:1, 6:1
Reciprocating Endo Mode 6:1 (Fixed)
Hold down the Check Key for more than 2
2
seconds to start up the Contra-Check. The “GEAr”
and the gear icon will start blinking after a short
beep sound.
1
2
3
English
NOTICE
Make sure that the correct gear ratio of the handpiece is selected before checking process, otherwise it will lead to
wrong results.
29
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