Nouvag 5052 User manual
Operating instructions
Contra angle 20:1 with LED
ArticleNo.31603,V03/17
EN
Safety measures
• The maximum permitted torque of the drive of this contra angle is 7.5 Ncm (risk of damage)!
• The operation of the contra angle is only permitted on dental units, which correspond to the medical device directive!
• Always ensure the correct operating conditions and cooling functions!
• Check the contra angle for damage and loose parts prior to use (e.g. press button)!
• Do not touch the soft tissue with the LED (risk of burnings)!
• Do not use the contra angle as light sensor!
• Do not look directly into the optic outlet!
• The contra angle is not suitable for use in potentially explosive atmospheres or with potentially explosive mixtures of anaestetic
substances containing oxygen or nitrous oxide!
• Prior to initial use lubricate the contra angle and sterilize all included parts!
• Do not assemble or remove contra angle during operation, change burr only with motor switched off!
Symbols
Conform to EU
standards
Autoclave at 135°C Suitable for thermal
disinfection
Technical Data
Article No. 5052 Chucking system Hexagon
Transmission ratio 20:1 Max. torque at bur (Ncm) 70**
Coupling motor side, standard according to ISO 3964 Max. motor speed (rpm) 50,000
Shank-Ø (mm) 2.35 Max. torque from motor (Ncm) 7.5
Min. clamping length (fixed) click into place Weight (g) 100
Approved length of burrs (mm) 45 Length (mm) 110
Max. working diameter of rotating instruments * **Use burrs of hardened steel (> 50 HRC, > 520 HV) if the torque is greater than 30 Ncm.
* According to the manufacturer’s data of rotating instruments in connection with the working speed
Operation
Disassemble/assemble contra angle
1. Hold contra angle head with one hand.
2. Gently press sheat against contra angle
head and release by twisting it.
3. Pull knee out of the contra angle head.
4. Pull middle gear out of knee.
Disassemble/assemble cooling unit
1. For internal burr cooling put the coolant pipe
through the burr release press button.
2. Attach the clip to the contra angles head.
3. Press coolant pipe into the slot of the clip.
4. Connect the tubes of the Y-manifold with
the coolant pipes of the clip.
5. Attach the tube set to the Y-manifold (not
shown on the picture).
Couple contra angle to motor
1. Press contra angle firmly onto motor
until it snaps into place.
2. Check fitting with slight counter motion.
Preparation instructions
The above-mentioned instructions were validated as suitable from NOUVAG AG. The person accomplishing the treatment is responsible that the treatment that actually took place leads to the
desired results in the treatment facility with the available equipment, materials, and personnel. To ensure this it is normally necessary to validate and supervise the process. Each deviation from the
instructions provided should be evaluated carefully with regard to effects and negative consequences.
Troubleshooting Spare parts
Art. No. Description Units
39152-------Y-connector with cooling tubes --------------------------- 3
39150 ------Coolant pipe, internal cooling ----------------------------- 1
39149 ------Clip with cooling pipe---------------------------------------- 1
1882--------Oil bottle-------------------------------------------------------- 1
1940 -------Cleaning pin---------------------------------------------------- 1
1984--------NouClean-Spray----------------------------------------------- 1
1958 --------Nozzle for NouClean-Spray -------------------------------- 1
Service centers
Switzerland
Nouvag AG • St.Gallerstr. 23–25 • CH-9403 Goldach
Phone +41 (0)71 846 66 00 • Fax +41 (0)71 845 35 36
Germany
Nouvag GmbH • Schulthaißstrasse 15 • D-78462 Konstanz
Phone +49 (0)7531 1290–0 • Fax +49 (0)7531 1290–12
Nouvag Service centers worldwide: www.nouvag.com
USA
Nouvag USA, LLC. • 6201 Airport Freeway • Suite 200
Haltom City • Texas 76117 • USA
Phone +1 (817) 887 9814 • Fax +1 (817) 887 9817 • Toll free (800) 673 7427
www.nouvagusa.com
For service, maintenance, spare parts and general inquiries please
contact your local dealer or representative.
Disposal:
Disposal of device, components and accessories must strictly conform to local
laws and regulations as set out by the relevant authorities.
Restrictions of
treatment
Frequent reprocessing hardly affects the contra angle. The product’s life end is usually determined by damage, wear and tear caused by usage.
INSTRUCTIONS
Location of use Wipe dirty surfaces with an expendable cloth/ tissue paper.
Storage and
transport
No special requirements. Avoid lengthy waiting periods before preparation because of danger of drying and corrosion.
Cleaning
preparations
1. Remove bur, clip and irrigation tubing from contra angle.
2. Unlock contra angle by pressing sheat against contra angle head while you twist them against each other.
3. Pull knee out of contra angle head.
4. Pull middle gear out of knee.
Automatic cleaning
and disinfection
Equipment: Washers and disinfectors with a special loading rack, which ensures handpiece connection to the washer/disinfector and channel
irrigation. A fine-mesh basket shall be used for the small parts. Rinse the contra angle from the rear. Use a neutral or alkaline cleaning agent in the
recommended concentration.
1. Load contra angle in the load carrier (irrigation of the channels must be ensured).
2. Place small parts into fine-meshed basket and close it.
3. Set cleaning cycle with effectual rinsing and cleaning. Carry out rinse cycle with demineralized water.
4. For thermal disinfection rinse with demineralized water at 93°C for 10 minutes.
5. By taking the contra angle out, check whether there is still visible dirt in gaps. If necessary, repeat cycle or clean manually.
Manual cleaning
Equipment: Neutral cleaning agent, soft brush, running water < 38°C, nozzle cleaner.
Procedure:
1. Rinse and brush surface dirt off the contra angle and small parts using running water. Detachable coolant tubes, the y-manifold and the clip
may be cleaned in a ultrasonic bath.
2. Clean openings of coolant tubes and y-manifold from deposits and smut, and rinse after with demineralized water.
Manual disinfection For manual disinfection, wipe the contra angle and small parts with a cloth soaked in a disinfectant solution on an
ethyl alcohol basis. Protect optic outlet from scratches using soft cloth. Use chlorine-free disinfectant.
Drying If the drying/disinfection equipment does not provide any drying program, dry contra angle and small parts with an absorptive cloth and blow dry
with compressed air.
Inspection, assembly
and maintenance
Check for visual damage, corrosion, and wear after each cleaning cycle.
1. Insert middle gear in knee.
2. Position knee and contra angle head with golden contacts against each other and connect them until there is no gap between contra angle
head and knee. Check chucking system and driveshaft for a free rotation by turning the driveshaft and observing the movement of the hexagon
chuck.
3. Connect sheat with contra angle head and lock it with a rotary movement until it snaps in.
4. Spray contra angle for about 3 seconds with NouClean spray. After, wipe with a damp cloth (See instructions on spray can).
Maintenance cycle: Perform maintenance cycle each time after 30 min. of use, after each interior cleaning and before every sterilization.
Test run after maintenance cycle: Start contra angle head down with lowest speed and increase to maximum speed within 30 seconds. Should
there be any dirt in spilling oil repeat the complete maintenance and care process.
Packaging Single: Pack the contra angle in an individual sterile supply package. The bag must be large enough that the seal is not under tension.
Sets: Arrange the contra angles into the foreseen trays or put onto an all-purpose sterilization tray.
Sterilization Autoclave in vacuum autoclaves at 135°C for at least 5 minutes*. If several instruments are sterilized during the sterilization cycle, make sure that
the maximum load of the sterilizer is not exceeded. Observe a drying phase for autoclaves without post-vacuum. Allow the contra angle to dry in
the bag with the paper side upwards.
*The temperature hold times must comply with the local guidelines and standards.
Storage No special requirements. If the sterilized contra angle is not used immediately after sterilization, add a sterilization indicator with the packing and
mark it with the date. Store it in a dust free, dry place.
Problem Cause Solution
Motor is running,
but tool does not
turn
Contra angle is not
connected properly
to the Motor
Press contra angle firmly on
Motor, until contra angle
snaps in. Check fitting
Tool functions
irregularly
Tool is not clamped
properly to the
contra angle
Fix tool and tighten chuck
Contra angle is
noisy
Ball bearings are not
lubricated or dirty
Spray the contra angle
interior with NouClean-
Spray
Art. no.: 1958
Table of contents
Other Nouvag Dental Equipment manuals
