DKL CHAIRS L2-ECO User manual

Operating Instructions
Manufacturer:
DKL CHAIRS GmbH
An der Ziegelei 3
D-37124 Rosdorf
[phone]
[email protected]
www.dkl.de
L2-ECO
Form no. GEN-L2ECO
Rev. 06 / 21.01.2022
Subject to change without
notice.

2
Contents
Symbols in the Operating Instructions 3
Symbols inside the Unit 4
Introduction 5
Electromagnetic Compatibility (EMC) 6
Safety Instructions - General 7
Safety Notes – Doctor’s Device and Cuspidor 8
Safety notes – Transmission Instruments 8
Technical Specifi cations 9
Media Requirements 10
Product Description 13
Foot Controller 15
Working Properly on the L2 16
Moving the Treatment Chair 17
Putting the Treatment Unit into Operation 19
General Instrument Functions 20
Starting the Turbine 21
Starting the Electric Motor 21
Function Syringe 22
LED.light Operating Lamp 24
LED.light EVA Operating Lamp 26
Tray 28
Cuspidor 29
Suction System 30
Cleaning and Disinfection of the Suction Handpieces 32
Cleaning and Disinfection of the Suction System 34
Cleaning and Disinfection of the Surfaces 36
Cleaning and Disinfection of the Instrument Holders 39
Cleaning the Turbine Return Air Filter 39
Bottle Care System 40
Flushing Function with the Bottle Care System 41
Intensive Flushing with the Bottle Care System 41
Water Separation Unit (WSU) 42
Flushing Function with the Water Separation Unit 44
Intensive Flushing with the Water Separation Unit 44
Filling DK-DOX 150 into the Water Separation Unit 45
Setting Media Instruments 46
Maintenance and Inspection 47
Safety Inspections 47
Waste Disposal 48
EMC - Manufacturer‘s Declaration 49
Annex
> Instructions for Use W&H Dentalwerk Bürmoos GmbHElectric motor EM-12L
> Instructions for Use W&H Dentalwerk Bürmoos GmbH FOOT CONTROL S-N2
> Operating Instructions DÜRR Dental Spittoon valve 3
> Operating Instructions DÜRR Dental CAS 1 Combi-Separator
> Operating Instructions DÜRR Dental CS 1 Combi-Sepamatic
> INSTRUCTION MANUAL FARO DENTAL SYRINGE SYR3
> Use Manual Luzzani Syringe Minilight
> USER MANUAL FARO EVA

3
Symbols in the Operating Instructions
WARNING!
(risk of injury)
General explanations,
without risk to
persons or objects
Thermodisinfectable Sterilisable up to the
specifi ed temperature Call customer service!
CAUTION!
(to prevent
damage occurring)
Symbols on the unit
Observe the operating
instructions!
ON / OFF Do not dispose of with
household waste.
CE-marking with iden-
tifi cation number of the
notifi ed body
Type B application part
Manufacturing date Model (designation) Serial number
VElectrical voltage VA
AC
AHz
Electrical power con-
sumption
Current intensity Frequency of alter-
nating current
Electrical fuse
Alternating current
Foot controller
Manufacturer Medical device UDI - Product
Identifi cation

4
Symbols inside the Unit
Earth conductor
connection - Protective
earth
Functional
earth
Symbols on the packaging
Transport upright; top
Permissible temperature range
Air humidity, limitation
Protect from moisture!
Do not stack!
Fragile
N
Connection point for neutral
conductor

5
Introduction
For your safety and the safety of your patients
These operating instructions are intended to explain how to use your product. However,
we must also warn of possible dangerous situations. Your safety, the safety of your team
and, of course, the safety of your patients are very important to us.
Please observe the safety instructions!
Intended purpose
This treatment unit is used for the diagnosis and therapy of children and adults in the fi eld of dentistry.
Improper use can damage the treatment unit and thus pose risks and
hazards to the patient, user and third parties.
Qualifi cation of the user
The DKL treatment unit may only be used after medically, professionally and practically trained
personnel have been instructed. The development and design of the treatment unit were geared
towards the target group of dentists, dental hygienists, qualifi ed dental employees (prophylaxis) and
dental assistants.
Production according to EU directive
The medical device complies with the provisions of Directive 93/42/EEC.
0123
Responsibility of the manufacturer
The manufacturer can only be held responsible for the impact on the safety,
reliability and performance of the treatment unit if the following instructions
are observed:
> The dental unit must be used in accordance with these operating
instructions.
> If assembly, additions, new settings, changes or repair work is carried out
by DKL or trained technicians authorised by DKL or personnel of authorized
dealers trained by DKL.
> The electrical installation of the room must comply with the regulations of
the IEC 60364-7-710 standard („Erection of electrical installations in rooms
used for medical purposes“) or comply with the regulations applicable in
your country.
> The recommended annual maintenance is carried out and any repair work
in this context meets the requirements of EN 62353.
„Repeat tests and pre-commissioning tests of medical electrical equipment
and systems – general regulations“are fully complied with.
> The national legal regulations are observed when using the device, in
particular the applicable health and safety regulations and accident
prevention measures.

6
Electromagnetic Compatibility (EMC)
Medical electrical equipment is subject to special precautions with regard to EMC and
must be installed and commissioned in accordance with the EMC instructions. DKL
guarantees that the dental unit complies with the EMC guidelines only if original DKL
accessories and spare parts are used. The use of accessories and spare parts not
approved by DKL may lead to an increased emission of electromagnetic interference or
to a reduced resistance to electromagnetic interference.
The EMC manufacturer declaration can be found on page 49.
HF communication equipment
Do not use portable and mobile HF-communication equipment (such as mobile
telephones) during operation. These can aff ect medical electrical devices.
Risks due to electromagnetic fi elds
The functionality of implantable systems, such as cardiac pacemakers and
implantable cardioverter defi brillators (ICD), can be infl uenced by electric, magnetic and
electromagnetic fi elds.
> Before using the product, ask the patient and user about implanted systems and
check the use.
> Perform a risk-benefi t analysis.
> Do not place the product near implanted systems.
> Do not place the instruments on the patient‘s body.
> Take appropriate emergency precautions and respond immediately to health changes.
> Symptoms such as increased heart rate, irregular pulse, and dizziness may be signs
of problems with a pacemaker or ICD.

7
Safety notes – Patient chair
> Not suitable for patients who cannot remain in a resting position due to mental or
physical disabilities.
> The patient‘s arms and legs must rest on the upholstered parts of the chair.
> Do not exceed the maximum patient weight of 150 kg.
> Do not sit on the head or foot rest of the horizontally aligned patient chair.
> Position changes must always be carried out under the surveillance of the person
giving treatment.
> Watch patients while moving the treatment chair.
> Make sure that there are no objects under the treatment chair.
Safety Instructions - General
> Before being put into initial operation, the treatment unit must be kept at room
temperature for 24 hours.
> Before each application, check the treatment unit and the instruments with cables for
damage and loose parts.
> Do not operate the treatment unit if it is damaged.
> Check the set parameters each time you restart the unit.
> Carry out a test run before each application.
> The application and timely shutdown of the system is the user’s responsibility.
> Make sure that in the event of a device or instrument failure, the treatment can be
completed safely.
> Use only original DKL fuses.
> Never touch the patient and the electrical connection at the treatment unit at the same
time.
> Do not lean on the doctor‘s device, the assistant‘s device, the tray or the operating
lamp.
> When moving the treatment chair, the doctor‘s device, the assistant‘s device, the tray or
the operating lamp, pay attention to the patient and the practice personnel.
> Always switch off the treatment unit before leaving the practice.
Hygiene and care before using the device
> Clean and disinfect the device immediately before or after each treatment!
> Wear protective clothing.
The treatment unit is classifi ed as an „ordinary device“ (closed device without protection
against water ingress).
The treatment unit is not suitable for use in an explosive atmosphere or in explosive
mixtures of anaesthetics with oxygen or nitrous oxide.
The treatment unit is not suitable for use in rooms with an oxygen enriched atmosphere.
Observe your country-specifi c guidelines, standards and specifi cations for
cleaning, disinfection and sterilisation.

8
Safety Notes – Doctor’s Device and Cuspidor
Risk of injury or infection caused by instruments that are not in use:
The arrangement of the instruments may cause injury or infection to the hand and
forearm when accessing the tray or the display.
Therefore, when accessing the tray or the display, pay attention to the arrangement of
the instruments.
Safety notes – Transmission Instruments
> Do not exceed the maximum permissible load of 2 kg on the doctor‘s
device.
Follow the instructions and safety notes in the operating instructions for the
transmission instruments.
> For the motors, only use transmission instruments with transmission systems that are
ISO 3964 (DIN 13940) compatible and approved by the manufacturer.
> For air-powered instruments, only use coupling systems according to ISO 9168.
> For air-powered instruments, only use coupling systems with anti-retraction stop for
contaminated cooling water.
> Observe the information provided by the manufacturer of transmission instruments
regarding transmission ratio, maximum speed and maximum torque.
> Only use faultless instruments and with the motors pay attention to the direction of
rotation of the rotating instrument. Follow the manufacturer‘s instructions.
> Plug in the transmission instrument only when the device is at a standstill.
> If the coolant supply fails, switch off the transmission instrument immediately.
> Before each use, check the transmission instrument for damage and loose parts.
> Never operate the clamping mechanism of the transmission instrument while using
the device or while the device is running down.
> Never reach into the instrument while it is running or running down.
> Avoid overheating of the treatment site.
> Check the secure placement of the instrument.
Highly immunosuppressed patients or patients with specifi c lung diseases should not
get into contact with the water of the treatment unit.
It is recommended to use sterile solutions.
>Before putting the device into initial operation and after downtimes (weekends,
(public) holidays etc.), fl ush the water lines intensively.
> Flush all instrument connections for 2 minutes before starting work.
> Press the glass fi ll button several times before starting work.
> Rinse used instruments for 20 seconds after each treatment.

9
Technical Specifi cations
Supply voltage 230V AC
Nominal voltage max. 4 A
Frequency 50/60 Hz
Fuse T 6.3 A H 250 V primary/ time-delay
Maximum power consumption 800 VA
Device class according to the 93/42/EEC Directive IIa
Protection class Device of protection class I
Application parts Type B application parts
Contamination level 2
Over voltage category II
Power cable 3x1,5 mm2
Suction control lines to the suction device 5x1,5 mm2
Potential equalisation 1x 4 mm2
Relay control line optional special function 3x1,5 mm2
Free end electrical cables above fl oor 500 mm
Fuse for domestic installation Circuit breaker: 16 A medium-lag
Recommendation: circuit breaker type C
Degree of protection against ingress of water Ordinary device (without protection against water ingress)
The foot control is drip-water protected according
to protection class IPX8
The motors of the treatment unit are designed for intermittent operation in accordance with the dental
treatment method.
Driving motors for patient chair and backrest: duty cycle (max. 25 s „ON“ / 400 s „OFF“)
Permanently connected device. In order to avoid the risk of electric shock, this device may only be
connected to a power supply with an earth conductor.
Transport and storage conditions
Ambient temperature 30 to +70 °C
Relative humidity 10 to 80 %
Atmospheric pressure 500 hPA to 1060 hPa
Operating conditions
Quality and load-bearing capacity of the fl oor The fl oor must be level and horizontal according to EN
18202. Unevenness of the fl oor along the total length of
the chair base up to 2 mm is acceptable. The minimum
load-bearing capacity of the fl oor must be 0.5 N/cm2
(equivalent to approx. 500 kg/m2).
Ambient temperature 10 to 35 °C
Relative humidity 15 to 80 %
Atmospheric pressure 700 hPA to 1060 hPa
Installation site ≤ 3,000 m above sea level
The treatment unit is not suitable for operation in
hazardous areas.
Weight
L2-Eco max. 230 kg

10
Media water
Water hardness 1.5 to 2.14 mmol/l
ph-value 6,5 to 8,5
Water fi ltration on site ≤ 100 µm
Water infl ow Pipe 10x1mm, angle valve outlet 3/8“
Water connection above fl oor min. 40 mm, max. 60 mm
Water inlet pressure 2.0 to max. 6.0 bars
Water quality Cold water in accordance with local and national drinking
water regulations.
Minimum fl ow rate 3 l/min
Media air
Air inlet pressure max. 7 bars
Air consumption 80 Nl/min
On-site air fi ltration ≤ 100 particles size 1 - 5 μm referred to one m3 of air
Oil content ≤ 0.5mg/m3,oil-free compressors; the compressor must suck
in hygienically perfect air.
Humidity Pressure dew point ≤ -20 °C at atmospheric pressure
Compressed air supply Pipe 10x1 mm, angle valve outlet 3/8“
Air connection above the fl oor min. 40 mm, max. 60 mm
Media Requirements
• Perform the installation according to the national installation requirements (e.g. EN 1717).
• For the reduction of microorganisms in the water supply pipe, please observe the following when laying this pipe to the
treatment unit:
- Avoid long stub lines to the treatment unit.
- Select the installation in such a way that other essential consumers (e.g. washbasin) are as far as possible
behind the connection of the treatment unit can be supplied from the same pipe.
- Avoid laying the hot water supply pipes in parallel.
• Recommendation: For the water supply of the treatment unit, install an angle valve with 2 outlets and 2 stop cocks. The
second outlet allows easy sampling of water for microbiological analysis.
Connection to the public drinking water supply
The treatment unit with a water separation unit complies with the requirements of EN 1717 (free outlet with separation
distance ≥ 20 mm) and the DVGW (German Technical and Scientifi c Association for Gas and Water). It is intrinsically safe
in accordance with worksheet W540 and therefore also meets the requirements of W270 and KTW (guideline for hygienic
assessment of organic materials in contact with drinking water).
When the treatment unit is equipped with a cuspidor, the bowl rinser ensures the free outlet with a separation distance ≥
20 mm. When the treatment unit is equipped with a Bottle Care System, the spray supply of the instruments is separate
from the public water supply.
Clean air and water pipes before installing the unit.
Chips and other foreign substances could be fl ushed or blown into the treatment unit.
Metal chips can interfere with the function of pneumatic components. Filters are clogged by foreign substances.
- When assembling, make sure that there are no chips or other foreign substances in the pipes.
- Flush the water pipes.
- Blow out the air ducts.
- Make sure that no further foreign substances get into the pipes and ducts after rinsing or blowing out.
Before the treatment unit is installed, the microbiologically perfect water quality of the domestic water supply
should be ensured and documented in the form of a microbial count.
Sampling and microbial count should be carried out by a competent laboratory.

11
Requirements for the suction system
Vacuum at supply connection min. 0,12 bar, max. 0,18 bar
Minimum suction power at supply connection ≥750Nl/min
Suction system Type 1: high fl ow rate
wet or dry suction
Diameter of suction handpieces: small suction handpiece: 6 mm
large suction handpiece: 16 mm
Suction pipe DN40 HT-PP (polypropylene, inside diameter approx. 36.5 mm)
Water drain DN40 HT-PP (polypropylene, inside diameter approx. 36.5 mm)
Gradient Min. 10 mm per metre
Wastewater volume 3 l/min
Filter in the treatment unit maintenance interval Article number
Particle fi lter water inlet 50 μm Replace annually 210623-WBG
Particle fi lter compressed air inlet 50 μm Replace annually 210623-LBG
Solid particle fi lter for the suction
system
Mesh size 1 mm In case of damage,
replace at least annually.
514100
1Air: pipe min. 10x1 mm, angle valve outlet 3/8“
2Water drain DN40 HT-PP
3Suction line DN40 HT-PP
4Power cable 3x1.5 mm2
4Equipotential bonding 1x 4 mm2
4Control line to suction device 5x1.5 mm2
5Water: pipe min. 10x1 mm, angle valve outlet 3/8“ (2
outlets with 2 stopcocks)
Requirements for Supply Connections
Typical pressure in the suction system
Spray mist suction Vacuum / mbar
90 NL/min 22,6
150 NL/min 38,2
200 NL/min 60,0
250 NL/min 88,8
300 NL/min 124
316 NL/min 137
Saliva ejector
50 NL/min 100,0
55 NL/min 120,0
60 NL/min 135,2
67 NL/min 162
80 NL/min 200

12
Treatment chair:
lowest position 570 mm
highest position 800 mm
L2-ECO Version with short back rest L2-ECO Version with long back rest
Dimensions in Millimetres

13
Product Description
1Treatment chair, seat
2Treatment chair, back rest
3Treatment chair, double-jointed head rest
4Treatment chair, joystick
5Treatment chair, arm rest
6Doctor’s device
7Tray
8Cuspidor
9Operating lamp LED.light
10 Foot controller doctor’s device
1
6
23
4
5
8
9
7
10
Assistant’s device
optional
Identifi cation label

14
Product Description
1Tray for storage
2Handle
3Spray mist suction
4Saliva ejector
5Turbine connection
6Micromotor
73-function syringe
8LED-display motor left-hand rotation
9LED-display spray
1
2
34567
8
9
Marking Type of holder
GS Spray mist suction
KS Saliva ejector
T Turbine connection
M Micromotor
S Syringe
Connecting the instrument hoses.
The instrument hoses can be connected or disconnected via a plug connection under the
doctor’s device. Depending on the equipment of the model, the doctor’s device is
equipped with the following instruments (from the left): turbine connections,
micromotor(s), piezo scaler and fi nally the syringe. The instrument holders are marked on
the back. Do not connect the tubes crosswise.
3
4
7
Assistant’s device
optional

Foot Controller
15
The wireless S-N2 f(wired) foot controller enables
hands-free operation of the instruments.
1Start signal for instruments
1Stop / abortion of programme run
2Press briefl y: coolant
2Press long: chipblower
3not used
4Press briefl y: left/ right-hand rotation
micromotor
4Press long: dim operating lamp
5Clamp for positioning
You will fi nd further information on use,
safety instructions, cleaning and battery
replacement in the W&H instruction
manual foot controllerS-NW, S-N2.
Connecting the Foot Controller
Plug the wired foot controller into the
socket at the chair base. Beforehand,
put the union nut over the cable.
Firmly tighten the union nut.
1
2
5
34
You can fi nd an application fi lm at www.youtube DKL Germany.
Video: DKL CHAIRS L2-ECO FUNCTIONS FOOT CONTROLLER
LINK: https://youtu.be/xAxGsXUby2I

16
Treating patients in a lying position gives you a clear view of the upper and lower jaw. This
optimal working posture is ensured by suffi cient legroom. During lower-jaw treatments, the
patients are positioned horizontally; for treatments in the upper-jaw region the patient’s
head is slightly overstretched backwards. The double-jointed headrest off ers stable
support for the patient’s head at the starting point of the neck muscles. This way the
patient is relaxed and does not need to constantly correct his or her position. Treatment of
patients in a lying position off ers you an optimal view and, consequently, optimal results.
Working Properly on the L2

17
Moving the Treatment Chair
Move the joystick downwards
>Treatment chair moves downwards.
Move the joystick upwards
>Treatment chair moves upwards.
Move the joystick to the left
>Back rest tilts backwards.
Move the joystick to the right
>Back rest moves to an upright position.
Tap the JoystickTwice
>Treatment chair moves to the entry /exit position.
Tap the joystick twice downwards
>Treatment chair moves to the treatment positionp2.
Tap the JoystickTwice to the Left
>Treatment chair moves to the rinsing position and back to the last position when tapping twice again.
Tap theJoystickTwice to the Right
>Treatment chair moves to the treatment position p1.
Press “p0“
>Treatment chair moves to the position for getting on/off .
Press “p1“
>Treatment chair moves to treatment position p1.
Press “p2“
>Treatment chair moves to treatment position p2.
Press “p3“
>Treatment chair moves to treatment position p3.
Briefl y press “lp“
>Treatment chair moves to the rinsing position and after
renewed pressing back to the “last position”.
For programming the keys, move to the desired programme position manually and then keep the
respective programme key pressed for about 3 seconds until you hear a signal tone. Now you
have successfully saved your individual treatment position.
Saving programme keys p0 – p3
Press the ”lp“ key to move the chair to the rinsing position. By pressing the key “Ip” once again,
the chair moves back to the previous programme position or to the manually set position. In
order to programme the chair, move it manually to the desired rinsing position and then keep the
key “Ip” pressed for about 3 seconds until you hear a signal tone. Now you have successfully
saved your rinsing position.
Saving programme key LP
Programme keys at the back rest
Joystick at the chair base
Joystick

18
Moving the Treatment Chair
Manually Extractable Double-Jointed Head Rest
Pull the release lever up to freely adjust the
double-jointed head rest. Press the lever down to fi x the
position of the double-jointed head rest. The release
lever must always be pulled up completely to move the
head rest.
Programme Run
Press the programme keys “0” and “lp” simultaneously for about 3 seconds until you hear
a signal tone. The treatment chair then moves the seat and the back rest into the lowest
position. The motion sequence has been reset now.
Once an instrument has been activated, the treatment chair cannot be moved any more.
The treatment chair can optionally be equipped with
arm rests. The arm rest on the assistant’s side is fi rmly
screwed on. The arm rest on the doctor’s side can be
removed by loosening the two knurled screws on the
back of the back rest.
Emergency-Stop System
Briefl y tap the joystick or any programme key at the back rest to stop the active program-
me immediately. For this purpose, you can also press the start button for the instruments
at the foot controller.
You can fi nd an application fi lm at www.youtube DKL Germany.
Video: DKL CHAIRS L2 SERIES FUNKTIONEN TREATMENT CHAIR POSITIONS
LINK: https://youtu.be/qzRuFbGAuA0

19
Putting the Treatment Unit into Operation
Putting the Unit into Operation
Before putting your treatment unit into initial operation, an intensive fl ushing
must be carried out [→page 41 or page 44].
1
2
Activating /
Deactivating the
Treatment Unit
T 6,3A H 250V
The treatment unit is equipped with a power switch 1 on the chair base. The
power switch connects the treatment unit with the power supply. In the event of
longer downtimes, the treatment unit should be disconnected from the
power supply. The treatment unit contains a device fuse 2. Switch on the
treatment unit at the power switch.The power switch lights up green.

20
General Instrument Functions
Instruments can be operated without coolant. The dental substance can be
damaged by frictional heat. Make sure that the treatment point is not
overheated when you have switched off the coolant.
Adjusting the Coolant
LED lights up green = spray on (water)
Green LED off = spray off
LED fl ashes green = only air
Selection by means of push-button 2 on the foot controller
LED-display coolant
Moving the Doctor’s Device
For optimal treatment, the doctor’s device can be positioned on the right or
left-hand side of the treatment chair when the back rest of the chair is in an
upright position. If the doctor’s device is within the collision range of the back
rest, the treatment chair cannot be moved.