BRASSELER USA NL4500 User manual

OPERATION MANUAL
Please read this Operation Manual carefully before use and file for future reference.
Rx only
High Speed Air Turbine Handpiece

Symbol
This product is Autoclavable up to Max. 135°C.
This Product can be washed bia Thermo Disinfector.
Rx Only Caution: U.S. Federal law restricts this device to sale by or on the order of a licensed physician
1. User and Indications for Use
User: Licensed Physician (Dentist)
Indications for Use: The NL4500 is an air-powered dental handpiece with intended use of being a surgical
tool for impacted third molar removal and periodontal procedures for which a conventional handpiece would
be used.

2. Directions for handling and operation
• Please read these precautions carefully and use only as intended or instructed.
• Safety instructions are intended to avoid potential hazards that could result in personal injury or damage
to the device. Safety instructions are classied as follows in accordance with the seriousness of the risk.
Class Degree of Risk
WARNING Hazard that could result in serious injury or damage to the device if the safety
instructions are not correctly followed.
CAUTION Hazard that could result in light or moderate injury or damage to the device if
the safety instructions are not correctly followed.
NOTICE General product specication information highlighted to avoid product
malfunction and performance reduction.
Brasseler U.S.A. Dental, LLC hereinafter will be referred to as “Brasseler USA.”

Warning
• Depressing the Push Button while the handpiece is in rotation may lead to overheating, causing burn injuries or product
failure. Avoid contacting oral tissue with the push button.
• Read this Operation Manual before use to fully understand the product functions.
• When operating the handpiece always consider the safety of the patient.
• Users are responsible for the operational control, maintenance and continual inspection of this product.
• Do not attempt to disassemble the handpiece or tamper with the mechanism except as recommend by Brasseler USA in
this Operation Manual.
• Do not drop, strike or permit any impact to the handpiece.
• Proper protective equipment (i.e. eyewear and masks) must be worn when operating this handpiece.
• Should the handpiece function abnormally, cease operation immediately and contact Brasseler USA.
• Do not use high acid water or sterilizing solutions to wipe, immerse or clean the handpiece.
• The products are delivered in a non-sterile condition and must be autoclaved prior to use.
• Perform regular function and maintenance checks.
• If the product is not used for a long period check it is functioning correctly before using on a patient.
• To avoid clinical downtime it is recommended that a spare be kept on hand in case of a breakdown during use.
• U.S. Federal law restricts this device to sale by or on the order of a licensed physician.

Cautions
• Under normal operating conditions air exhausts from the back of the head of the handpiece. Directing air into an open
wound or beneath the mucosa or dermis may result in injury from air emphysema or embolism.
• When using this handpiece do not direct the back of the head towards a tissue ap.

3. Setting of Air & Water Supply Pressure
Measure the supply pressure at the handpiece / hose connection point and
set the pressure to the value specied on the specication table. (Fig. 1)
For Multi Gauge information refer to Option Parts List.
Warning
Caution
• Do not exceed the optimum pressure specied on the specication table.
• Do not use air contaminated by dust, moisture and oil.
Handpiece
Exhaust
Air Pressure
Drive Air
Pressure
Chip Air Pressure
Water Pressure
Refer to Operation Manuals of coupling and hose before connecting the handpiece.
Fig. 1

4. Connection & Disconnection of the Handpiece (NL4500)
(1) Connection
1) Insert the handpiece into the coupling.(Fig. 2)
2) Make sure the handpiece is rmly connected to the coupling.
(2) Disconnection
Pull back the Retention Lock Ring and remove the handpiece
from the coupling.(Fig. 2)
Caution
• Do not operate the Retention Lock Ring while under drive air pressure. The
high pressure may cause sudden release of the handpiece from the coupling.
Drive Air
Pressure
Handpiece Coupling
Fig. 2
Retention Lock Ring

5. Insertion and Removal of the Bur
5-1 To Insert the Bur
1) Insert the bur until it is correctly seated in place. (Fig. 3)
2) Depress the Push Button and insert the bur into the chuck until it
is secure then release the button.
3) Ensure that the bur is secure by gently pulling and
pushing the bur WITHOUT depressing the Push Button.
5-2 To Remove the Bur
Depress the Push Button rmly and remove the bur.
Fig. 3

Caution
• Ensure the bur is fully seated in the chuck before use.
• Do not attempt to remove the bur until it has come to a complete stop.
• Do not use dirty, worn or used single use burs.
• Debris from the bur shank that is introduced into the chuck could cause the bur to slip and prevent the handpiece from
fully gripping the bur.
• Do not exceed the bur speed recommended by the bur manufacturer.
• Do not exceed maximum bur length recommended by Brasseler USA.
• Do not apply excess pressure to the bur as it may break or bend or become difcult to remove.
• Damaged burs may break at high rotation speeds or slip from the chuck. Always inspect the bur before use and do not use
any bur with damage that includes but not limited to:
• Bent, deformed, worn, rusted, broken bur.
• Cracked.
• Non-ISO standard or tampered bur
Notice
• Do not use a sharp tool to clean the Cellular Glass Optic Rod. It could damage the glass and reduce the light transmission.

Caution
• When using a bur with a 25mm length, the working diameter must be within the value specied in the table below. Using
a bur with an excessive diameter could cause bur run-out and bend or break the bur.
øa Diamond Bur: ø2mm or less
Carbide Bur: ø1mm or less

6. Pre Check
Check that the Head Cap is rmly tightened. Also check for handpiece vibration, noise and overheating. If any
abnormalities are found do not use the handpiece and contact Brasseler USA.
7. Maintenance
After each patient maintain the product as follows. Lack of maintenance could
cause premature failure or overheating of the handpiece.
7-1 To Insert the Bur
After the treatment of each patient, clean the Clean Head.
1) Remove dirt and debris from the Clean Head Holes with the cleaning
wire and brush (supplied as an accessory for the handpiece). (Fig. 4)
2) Half ll a cup with clean water.
Clean Head Hole
Fig. 4

7. Maintenance cont.
7-1 To Insert the Bur
3) Rotate the handpiece and immerse half of the handpiece head in the cup
of water. (Fig. 5)
4) Rotate then stop intermittently the handpiece 3 times for 2 to 3 seconds
each time.
5) Wipe the handpiece dry.
7-2 Cleaning (Handpiece)
1) Remove dirt and debris from the handpiece. Do not use a wire brush.
2) Wipe clean with alcohol-immersed cotton swab or cloth.
This icon denotes that the handpiece can be washed via Thermo-Disinfector.
Refer to the Thermo-Disinfector manual.Fig. 5

• After washing with Thermo-Disinfector and prior to lubrication, dry the handpiece until all internal moisture is thoroughly
removed. Thermo-Disinfector moisture remaining inside the handpiece could reduce the effect of lubrication and could
cause corrosion.
• Never use and solvent such as benzine or thinner to clean the handpiece.
• Do not use a sharp tool to clean the Glass Rod. It could damage the glass and
reduce the light transmission.
Caution
Caution
7-3 Cleaning (Optic)
Wipe clean the Glass Rod tip with an alcohol-immersed cotton swab.
Remove all debris and oil. (Fig. 6)
Cotton Swab
Glass Rod
Fig. 6

• Do not forcibly insert the wire into the port. Resultant port damage could cause
the spray to be directed away from the bur, and the cooling efciency reduces.
• Do not blow the air into the Clean Head Hole.
Caution
7-4 Cleaning (Spray Point)
When spray ports are clogged, or spray does not exit evenly from the
ports, clean the ports. (Fig. 7)
Spray Port
Cleaning Wire
Fig. 7

7-5 Lubrication NL4500
NSK PANA SPRAY Plus or other approved lubricant.
Apply NSK PANA SPRAY Plus every time after each use and/or before autoclaving.
1) Remove the bur from the handpiece.
2) Insert the Spray Nozzle into the Spray Port nozzle on the can.
3) Insert the Spray Nozzle in rear of the handpiece. Hold the handpiece and
spray for approximately 2-3 seconds. Apply lubricant until it expels from the
handpiece head for at least 2 seconds. (Fig. 8)
Spray Nozzle
Handpiece PANA SPRAY Plus
Fig. 8
• When applying spray be sure to hold the handpiece rmly to prevent the
handpiece from slipping out of the hand due to the spray pressure.
• Hold the spray can upright.
Caution

Chuck cleaning
Clean Push Button chuck once a week.
1) Mount the arrow-head spray nozzle tip into the spray can port.
2) Lubricate the chuck for 1 to 2 seconds directly through the bur insertion
hole. (Fig. 9)
3) Lubricate handpiece by using NSK PANA SPRAY Plus (or other approved
handpiece lubricant)
(Fig. 8) or an automatic handpiece cleaning and lubrication system.
An automatic handpiece cleaning and lubrication system
When using an automatic handpiece cleaning and lubrication system, refer to the system instructions.
Hole for bur attachment
Fig. 9
• If the chuck is not regularly cleaned the chuck grip may be weakened and the bur may be accidentally released
while in operation.
Caution

• Do not autoclave the handpiece with other instruments even when it is in a pouch. This is to prevent possible discol-
oration and damage to the handpiece from chemical residue on other instruments.
• Keep the handpiece in suitable atmospheric pressure, temperature, humidity, ventilation, and sunlight. The air should
be free from dust, salt and sulphur.
• Immediately after use, the handpiece should be cleaned, lubricated and sterilized. If blood remains on the external or
internal surfaces it can become clotted and cause rust.
• Do not heat or cool the handpiece too quickly. Rapid change in temperature could cause damage to the handpiece.
Caution
7-6 Sterilization
Sterilize the product by autoclave sterilization. Remove the bur after each patient and sterilize as noted below.
1) Insert into an autoclave pouch. Seal the pouch.
2) Autoclavable under the conditions below.
Autoclave for more than 20 min. at 121˚C, or 15 min. at 132˚C, or 3 min. at 134˚C.
3) The handpiece should remain in the autoclave pouch until required for use.

Caution
• To avoid product failure, do not use a sterilizer that exceeds a cycle temperature of 138°C, including the dry cycle.
In some sterilizers, the chamber temperature may exceed 138°C. Contact the sterilizer manufacturer for detailed
information about cycle temperatures.
• Autoclave sterilization is recommended for the product. The validity of other sterilization methods is not conrmed.
• Do not touch the handpiece immediately after autoclaving as it will be very hot and must remain in a sterile condition.
Notice
• Brasseler USA recommends Class B sterilizers as stated in EN13060.

NL4500
Replace the O-rings if water is present in the exhaust air line. This is an indication of
possible water leakage within the coupling. ALWAYS change the complete set of O-rings.
1) Loosen and Remove the taper ring at the rear of the handpiece. (Fig. 10)
2) Gently remove each O-ring by hand. (Fig. 11)
3) Insert the complete set of new O-rings in the correct grooves.
4) Replace and rmly tighten the taper ring.
*Refer to Spare Parts List to identify the correct parts.
8. Replacing the O-rings
Taper Ring
O-ring
Fig. 10
Fig. 11
• Do not force the new replacement O-ring with excessive pressure.
• When inserting new O-rings, make sure they are inserted in the correct grooves.
• Make certain that the taper ring is rmly tightened. If the taper ring is loose
water and air leakage could occur.
Caution

9. Replacing the Non-Retraction Valve
A water Non-Retraction Valve is integrated in the coupling joint (the product below), which shuts off the water retraction
directly at the handpiece head to prevent uids inltrating the water line. If water is beginning to leak from the
handpiece, replace the Non-Retraction Valve.
Brasseler / NSK Coupling
1) Remove the coupling joint from the hose.
2) Remove the back-end gasket.
3) Pull and remove the water tube, and replace the Non-Retraction Valve.
4) Insert the new Non-Retraction Valve securely and remount the back-end gasket.
*Refer to Spare Parts List to identify the correct parts.
Fig. 12
Non-Retraction Valve
Gasket