DKL L2 Guide

L2-Range and D2-Range
Maintenance Log
English
Rev. 1.
1
Rev. 1.
1

Maintenance log L2-Range and D2-Range
page 2
Attention
General advice: tools, specified accessories (turbine pressure device with 4 manometers, air flow measuring tube),
spare parts for repairs and appropriate lubricants are not included in the maintenance kit. DKL accepts no liability for
damages caused by using non-approved lubricants or spare parts! Unless stated otherwise, seals and O-rings can be
lubricated with Klüber Syntheso Pro AA 2/ AA 4 lubricating grease. Never lubricate any of the O-rings in the lamp
because they have a braking function.
Information on how to proceed: The sequence of tasks to be carried out given here is solely intended as a guide. It
can be changed at your discretion as long as the hygiene regulations are observed. For a better overview, in the last
column you can tick the tasks that have been completed. Please note that identical materials (o-rings, seals) may have
differing shades of colour.
Attention
Safety note: We expressly advise you that when performing maintenance work on electrical and electronic components
the main switch of the unit must always be in the OFF position. Otherwise, there is a risk of getting an electric shock. For
your own protection, you should wear rubber gloves, safety goggles and mouth-nose protection when working on
contaminated parts (suction system, separator, instruments) or when carrying out a disinfection procedure.
ESD safety note: When servicing or repairing electrostatic sensitive components on the treatment unit, the generally
applicable ESD guidelines for handling electronic components must be observed! While the device is open, all ESD
precautions must be taken when handling PCBs. Always remember to discharge yourself by touching an earthing point
before touching the treatment unit (chair base, mounting rod).

Maintenance log L2-Range and D2-Range
page 3
Customer: Dealer:
Address: Address:
Serial number: Model:
Before starting the maintenance work, a function test was carried out and the person who runs the practice or the practice staff were informed of
any ascertained defects. Correction of these defects is not part of this maintenance.
The maintenance work was carried out according to this maintenance log and using original DKL spare parts.
D
ate of th
e maintenance
:
Name
of the technicia
n
:
Signature
:
Symbol
Explanation
-
Does not apply or does not exist
√
Space for documenting the work performed

Maintenance log L2-Range and D2-Range
page 4
Work to be performed Interval Applies to
model
Spare part Order number Quantity
1. Compressor
Check cut-in and cut-out pressure. Connection for air pressure max. 7 bar Once a year L2-Range
D2-Range
- - -
2. Suction Device
Check intake depression. Discharge flow of at least 270 SLPM (standard litres per
minute).
Once a year L2-Range
D2-Range - - -
3. Treatment Unit
Basic functions of the complete treatment unit (patient chair, doctor’s device,
assistant’s device, operating lamp and foot control) must be ensured before
starting maintenance work.
Once a year L2-Range
D2-Range - - -
Check the main switch ON/OFF. The switch lights up green. Once a year L2-Range
D2-Range - - -
Visual inspection of the hydropneumatic connections (air/water and waste water)
for leaks and functionally for sufficient flow. Once a year L2-Range D2-Range - - -
Travel track: check side cover belt for abrasion and V-belt. Every 3
years D2-EP - - -
Connecting base: Check correct seating of the spacer roller of the energy chain in
the travel track.
Every 3
years D2-EP - - -
4. Water and Air input
Visual leak test of the water/air control unit as well as the tubing and corner valves. Once a year L2-Range
D2-Range - - -
Air input control unit: replace the air filter element as well as O-rings of the filter
cover. Once a year L2-Range D2-Range
Filter module with
O-ring seal
210623-LBG
(Included in
maintenance set
21139
0
)
1
Air input control unit: check air pressure at the manometer and, if necessary, set to
a stream of 5.5 bar by means of a pressure regulator (with Standard Turbine
connection).
Once a year L2-Range
D2-Range - - -

Maintenance log L2-Range and D2-Range
page 5
Air input control unit Advanced Air: replace the air filter element and the O-rings of
the air filter. Once a year
L2-S300, L2-
C600, L2-S600,
D2-Range
Filter module air inlet block
with O-ring seal
210623-ALB
(not included in
maintenance set
211390
)
1
Air input control unit Advanced Air: check air pressure at the manometer and, if
necessary, set to a stream of 0,57 MPa by means of a pressure regulator (with
Advanced AIR turbine)
Once a year
L2-S300, L2-
C600, L2-S600,
D2-Range
- - -
Water input control unit: replace the water filter, biofilter and the O-rings of the
water filter. Once a year L2-Range D2-Range
Biofilter and water filter
water input
210623-WBG
(included in
maintenance set
21139
0
)
1
Water input control unit: check water pressure at the manometer and, if necessary,
set to a stream of 2,5 to 3 bar by means of a pressure regulator Once a year L2-Range D2-Range - - -
5. Water Separation Unit (WSU) Maintenance Set 211393 1
Visual leak test. Once a year L2-Range
D2-Range - - -
Replace the inlet and outlet of the non-return valve on the dispensing cylinder. Once a year L2-Range
D2-Range
Adapter with non-return
valve Inlet Dispensing
Cylinder, Adapter with non-
return valve Outlet
Dispensing Cylinder
230014-E35
230014-E36
(included in
maintenance set
21139
3
)
2
Clean the glass bowl and cover of the storage tank, disinfect it and replace the
biofilter. Once a year L2-Range D2-Range
Bio-filter ae-aqua, stainless
steel ring
514401
(included in
maintenance set
21139
3
)
1
Replace the water inlet tube for the storage tank. Once a year L2-Range
D2-Range
Water inlet tube with aerator
angle (WSU)
230014-E31
(included in
maintenance set
21139
3
)
1
Fill up with DK-DOX 150 chlorine dioxide solution. Inspection L2-Range
D2-Range DK-DOX 150 set 6x250 ml
590007
(not included in
maintenance set
21139
3
)
1
Check the function, especially the suction of chlorine dioxide into the dispensing
Cylinder and the dosing from the dosing dispensing cylinder to the mixing tank. Inspection L2-Range D2-Range - - -
Check water quality by means of the chlorine dioxide concentration. Quick test by
means of test strips. Inspection L2-Range D2-Range
DK-DOX Test stripes
(set 50 pcs)
590008
(not included in
maintenance set
211393)
1

Maintenance log L2-Range and D2-Range
page 6
6. Bottle Care System
Bottle Care System: replace 2 litre bottle, suction hose and seal (with cuspidor). Once a year L2-Range
D2-Range
Maintenance Set L2-D2
Range Bottle Care System
2 litre
211391 1
Bottle Care System: replace 1 litre bottle, suction hose and seal (with doctor's
device). Once a year L2-Range D2-Range
Maintenance Set L2-D2
Range Bottle Care System
1 litre
211392 1
7. Doctor’s Device
Replace the biofilter in the doctor's device. Once a year L2-Range
D2-Range Bio filter maintenance set
210620-W
(Included in
maintenance set
211390)
1
Turbine connection: separate turbine coupling from the hose. Replace seal or O-
rings according to the manufacturer’s instructions. Check contacts and media ducts
(always replace all three O-rings to ensure tightness of the turbine.)
Once a year L2-Range
D2-Range
seal
O-rings
as specified by the coupling
system manufacturer
- -
Standard turbine connection: check settings for operating air. Pressure of operating
air 3,2 ± 0,1 bar Once a year L2-Range D2-Range - - -
Micromotor EM12L: Replace seal or O-rings according to the manufacturer’s
instructions (set of 3 O-rings). Check contacts and media ducts (always replace all
three O-rings to ensure tightness of the motor.)
Once a year L2-Range
D2-Range O-rings motor (3 pcs)
01862300
(Included in
maintenance set
211390)
1
Micromotor: check settings for cooling air.
Volume of cooling air 8 SL (standard litres), flowing. Once a year L2-Range D2-Range - - -
Piezo Scaler: separate scaler handpiece from the tube.
Replace the O-rings from the tube connection. Check contacts and media ducts. Once a year L2-Range D2-Range
O-ring for tube coupling
(2 pcs)
02060203
(Included in
maintenance set
211390
)
1
3-function syringe:
Clean the canula with cleaning wire (nozzle water/air duct).
Check O-rings of the canula for leaks and replace if necessary
Once a year L2-Range
D2-Range
Seal
O-rings
according to specifications
of manufacturer LUZZANI or
FARO
- -
Visual leak test. Inspection L2-Range
D2-Range - - -

Maintenance log L2-Range and D2-Range
page 7
8. Cuspidor
Replace the biofilter in the cuspidor. Once a year L2-Range
D2-Range Bio filter maintenance set
210620-W
(included in
maintenance
set 211390
)
1
Glass filler: check drain cock at the retainer for leaks; if necessary, replace O-rings.
Remove any deposits of substances in water from the drain cock (mechanically or
in an ultrasonic bath).
Every 3
years
L2-Range
D2-Range O-ring 8x1
640003
(not included in
maintenance set
21139
0
)
2
Cuspidor bowl: check the drain of the cuspidor bowl for leaks; replace the O-seal if
necessary; clean the funnel.
Every 3
years
L2-Range
D2-Range O-ring seal 42x2,5
640019
(not included in
maintenance set
21139
0
)
1
Cuspidor bowl: check drain sieve (gold catcher) and replace. Once a year L2-Range
D2-Range Sieve
410081
(included in
maintenance
set 211390
)
1
With spitton valve 3: Perform a visual leak test.
Observe the manufacturer’s (Dürr) maintenance instructions.
❯ Check compressed air supply ❯ Perform a functional test, clean the yellow coarse
filter or replace it if required.
Once a year L2-Range
D2-Range Protective strainer
0700-702-06E
(order from
DÜRR Dental)
-
With cuspidor valve 3: Perform a visual leak test.
Observe the manufacturer’s (Dürr) maintenance instructions. ❯ Clean the float
monitor in the collection vessel. ❯ Clean the seal on the float sensor for ventilation
and replace if required, clean the yellow coarse filter or replace it if required.
Every 3
years
L2-Range
D2-Range Protective strainer
0700-702-06E
(order from
DÜRR Dental)
-
Dürr rinsing unit II: Perform a visual leak test.
Check and clean the fine filter. Check the amount of dirt on the float monitor
(outlet) and to clean this where required.
Once a year L2-Range
D2-Range - - -
With amalgam separator CAS1: Perform a visual leak test. Check function and
suction power: Observe the manufacturer’s (Dürr) maintenance instructions.
❯ Cleaning of the suction unit in accordance with the operating instructions.
❯ Clean the float. ❯ Replace the bellows.
Once a year L2-Range
D2-Range Bellows
7117-420-25E
(order from
DÜRR Dental)
-
With amalgam separator CAS1: Perform a visual leak test. Observe the
manufacturer’s (Dürr) maintenance instructions. ❯ Replace the rubber grommets on
the connections. ❯ Replace the float.
Every 3
years
L2-Range
D2-Range Service kit (3-year interval)
7117-980-32
(order from
DÜRR Dental)
-
With amalgam separator CAS1: Perform a visual leak test. Observe the
manufacturer’s (Dürr) maintenance instructions. ❯ Replace the centrifuge drum and
seal. ❯ Replace all O-rings (from the replacement parts kit) in the device. ❯ Replace
the rubber grommets on the connections. ❯ Replace the float.
Every 5
years
L2-Range
D2-Range Service kit (5-year interval)
7117-980-30
(order from
DÜRR Dental)
-

Maintenance log L2-Range and D2-Range
page 8
With Combi-Sepamatic CS1: Perform a visual leak test. Check function and suction
power: Observe the manufacturer’s (Dürr) maintenance instructions.
❯ Cleaning of the suction unit in accordance with the operating instructions. ❯ Clean
or replace the protective sieves at the aspiration inlet. ❯ If a rinsing unit is present:
clean the sieve in the water supply. ❯ Perform a functional test.
Once a year L2-Range
D2-Range - (order from
DÜRR Dental) -
With Combi-Sepamatic CS1: Perform a visual leak test. Check function and suction
power: Observe the manufacturer’s (Dürr) maintenance instructions.
❯ Replace the rubber grommets on the connections.
Every 3
years
L2-Range
D2-Range
Replacement parts set
(3 years)
7117-980-33
(order from
DÜRR Dental)
-
With Combi-Sepamatic CS1: Perform a visual leak test. Check function and suction
power: Observe the manufacturer’s (Dürr) maintenance instructions.
❯ Replace the rubber grommets on the connections.
❯ Replace all O-rings in the device.
Every 5
years
L2-Range
D2-Range O-ring set for CS 1
7117-980-22
(order from
DÜRR Dental)
-
Visual leak test. Inspection L2-Range
D2-Range - - -
9. Suction
Suction filter block check suction filter for soiling and proper drain; clean it if
necessary. Once a year L2-Range D2-Range - - -
Suction filter block: check sealing cap of the suction filter drawer and replace
O-ring. Once a year L2-Range D2-Range O-ring seal DIN3770-40x2,5
640000
(included in
maintenance
set 211390
)
1
Suction filter block: check filter sieve drawer for defects and replace if necessary. Once a year L2-Range
D2-Range Filter for suction bloc
514100
(included in
maintenance
set 211390
)
1
Suction filter block: pull off suction hoses and replace O-rings. Once a year L2-Range
D2-Range
O-ring seal DIN3770-20x2
O-ring seal DIN3770-14x2 (2
pcs)
640001
(included in
maintenance
set 211390)
640002
(included in
maintenance
set 211390
)
1
2
Check suction hoses for defects and replace if necessary. Once a year L2-Range
D2-Range - - -
Suction shut-off valve: Perform a visual leak test. Clean and replace valve
membrane of the valve. Once a year L2-Range D2-Range
Membrane for suction air
shut-off valve
513500-1
(included in
maintenance
set 211390
)
1
Visual leak test. Inspection L2-Range
D2-Range - - -

Maintenance log L2-Range and D2-Range
page 9
10. Operating Lamp
LED- lamp:
Check movement lamp; if necessary, adjust braking system.
Caution: Ensure that the LED lamp remains floating by setting the adjusting screw
(gas-pressurised spring).
Once a year L2-Range
D2-Range Tool for spring adjustment
SPT408069
(not included in
maintenance
set 211390)
1
LED-lamp: check if the handles are mechanically secured. Once a year L2-Range
D2-Range
- - -
11. Tray
Check arm movements; if necessary, carry out vertical weight adjustment
(max. 2 kg). Once a year L2-Range D2-Range - - -
Check rotary movement of the tray. Check height adjustment. Once a year L2-Range
D2-Range - - -
Check swivelling range of the tray; if necessary, in the event of collision mount the
limit stop of the tray. Once a year L2-Range D2-Range - - -
12. Treatment Chair
Treatment chair: check the correct position of the seat upholstery, i.e. check if the
three foot upholstery fasteners are properly snapped into the foot rest Once a year D2-Range - - -
Treatment chair: check the correct position of the stainless-steel casing on the
chair base and of the rubber profile. If there is any squeaking noise, use a
stainless-steel care product. If damaged, replace the rubber profile set.
Once a year
D2-SOLO, D2-
SAE, D2-EC,
D2-EP
Sealing profile set for
lift cover
210200-E1
(not included in
maintenance
set 211390)
1
Treatment chair: Check the spindle of the motors (lifting and back rest motor) as
well as all retaining bolts and locking screws of the kinematics for tightness.
Every 3
years
L2-Range
D2-Range - - -
Treatment chair: Check the backrest pull-out panel for correct position and foreign
objects; readjust and clean if necessary. Once a year D2-Range - - -
13. Treatment Unit: After completion of the maintenance, the
following tasks have to be performed.
After completing the maintenance work and the assembly of the components, the
function and tightness of the media ducts have to be checked (water, air and
wastewater ducts).
Once a year L2-Range
D2-Range - - -

Maintenance log L2-Range and D2-Range
page 10
14. Safety Inspection
Once the tasks listed above have been completed and no further faults have
occurred, a safety inspection has to be carried out.
According to IEC 62353, the safety inspection is a periodic safety check required
for medical products.
Recommen-
dation after
3 years at
the latest or
after each
intervention
in the unit.
L2-Range
D2-Range Safety inspection device - -
15. Maintenance Log
After completion of the tasks listed above and subsequent safety inspection, the
treatment unit has to be handed over to the customer, together with the completed
maintenance log form and the safety inspection printout.
Once a year L2-Range
D2-Range - - -
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