Durr Dental XR 24 Pro 1700-08 User manual

EN
9000-600-74/30

2018/02SE
Dürr Dental X-ray Film
Developer XR 24 Pro
Installation and Operating Instructions

EN
22018/02SE2
Content
Important Information
1. General . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Note on Conformity . . . . . . . . . . . . . 4
1.2 General Notes . . . . . . . . . . . . . . . . . 4
1.3 Notes on medical products . . . . . . . . 4
1.4 Intended purpose . . . . . . . . . . . . . . . 4
1.5 Notes on EMC and medical prod-
ucts . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.6 Correct Usage . . . . . . . . . . . . . . . . . 5
1.7 Incorrect usage . . . . . . . . . . . . . . . . 5
1.8 Appliance disposal . . . . . . . . . . . . . . 5
1.9 Disposal of Chemicals . . . . . . . . . . . 5
2. Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 General Safety Notes . . . . . . . . . . . . 5
2.2 Electrical safety instructions . . . . . . . 6
3. Warnings and Symbols . . . . . . . . . . . . . 6
3.1 Model identification plate . . . . . . . . . 6
4. Delivery Contents . . . . . . . . . . . . . . . . . 7
4.1 Special accessories . . . . . . . . . . . . . 7
4.2 Disposable materials . . . . . . . . . . . . 7
5. Technical Data . . . . . . . . . . . . . . . . . . . 7
5.1 XR 24 Pro, 1700-08 . . . . . . . . . . . . . 7
5.2 Environmental conditions . . . . . . . . . 7
6. XR 24 Pro functional layout . . . . . . . . . 8
7. XR 24 Pro functional description . . . . . 9
7.1 PCB (main board) layout . . . . . . . . . . 9
Mounting
8. Set-up . . . . . . . . . . . . . . . . . . . . . . . . . 10
8.1 Room for set-up . . . . . . . . . . . . . . . 10
8.2 Set-up alternatives . . . . . . . . . . . . . 11
8.3 Set-up . . . . . . . . . . . . . . . . . . . . . . 11
9. Installation . . . . . . . . . . . . . . . . . . . . . 12
9.1 Water connections . . . . . . . . . . . . . 12
9.2 Waste water connections . . . . . . . . 12
9.3 Waste water hose connection
from developer and fixer . . . . . . . . . 13
10. Start-up and first use . . . . . . . . . . . . . 14
10.1 Clean unit . . . . . . . . . . . . . . . . . . . 14
11. Electrical connection . . . . . . . . . . . . . 15
12. Circuit diagram . . . . . . . . . . . . . . . . . . 16
12.1 PCB (main board) operating func-
tions . . . . . . . . . . . . . . . . . . . . . . . 16
12.2 PCB (main board) control func-
tions . . . . . . . . . . . . . . . . . . . . . . . 16
12.3 PCB (main board)
power functions 230V . . . . . . . . . 17
13. Start-up and first use . . . . . . . . . . . . . 18
13.1 Settings / service operation for
the Service Technician . . . . . . . . . . 19
13.2 Check temperature of the devel-
oper and carry out commission-
ing test . . . . . . . . . . . . . . . . . . . . . 20
14. Transport . . . . . . . . . . . . . . . . . . . . . . . 21
14.1 Remove drainage hoses . . . . . . . . 21
14.2 Protection from damage . . . . . . . . 21

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2018/02SE 3
Use
14.3 Program overview . . . . . . . . . . . . . 22
14.4 Service / Fault message . . . . . . . . 22
15. Operation . . . . . . . . . . . . . . . . . . . . . . . 22
15.1 In the morning or before surgery
start . . . . . . . . . . . . . . . . . . . . . . . 23
15.2 To change program: . . . . . . . . . . . 24
15.3 In the evening or after surgery
closing . . . . . . . . . . . . . . . . . . . . . 24
15.4 Surgery or clinic closures . . . . . . . . 24
15.5 Film recommendation list for Dürr
Dental Developer
XR 24 ... . . . . . . . . . . . . . . . . . . . . 25
16. Maintenance . . . . . . . . . . . . . . . . . . . . 26
16.1 Change the chemicals . . . . . . . . . . 27
16.2 Every 2 months cleaning tanks
and roller sets . . . . . . . . . . . . . . . . 30
Trouble-shooting
17. Tips for Service Technicians . . . . . . . . 33
17.1 Fault message on display panel
with audible signal . . . . . . . . . . . . . 34
18. Tips for Service Technicians . . . . . . . . 35
19. Tips for Trouble-shooting . . . . . . . . . . 36
19.1 Before starting . . . . . . . . . . . . . . . 36
19.2 Remove front panel . . . . . . . . . . . . 36
19.3 Remove rear panel . . . . . . . . . . . . 36
19.4 Remove side panels . . . . . . . . . . . 36
19.5 After completing work . . . . . . . . . . 36
19.6 Service mode plan . . . . . . . . . . . . 37
19.7 Changing display . . . . . . . . . . . . . . 39
19.8 Check unit fusing . . . . . . . . . . . . . 39
19.9 Changing the process heater and
PTC-sensor . . . . . . . . . . . . . . . . . . 40

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1. General
1.1 Note on Conformity
This product has been tested for conformity ac-
cording to the appropriate directives as laid
down by the European Union and has been
found to conform to all the required
specifications.
1.2 General Notes
• These Installation and Operating Instructions
form an integral part of the unit. They must be
kept close to the unit at all times. Precise ob-
servance of these instructions is a precondi-
tion for use of the unit for the intended pur-
pose and for its correct operation. New per-
sonnel must be made aware of the contents,
and they should be passed on to future oper-
ating staff.
• Safety for the operator as well as trouble-free
operation of the unit are only ensured if use is
made of original equipment parts. In addition,
only those accessories expressly recommend-
ed in the Installation and Operating
Instructions or explicitly recommended by
Dürr Dental may be used with this appliance.
If other accessories are used with this appli-
ance, Dürr Dental cannot guarantee safe op-
eration or proper functioning. No liability on
the part of the manufacture will be accepted
in the case that damage arises through the
use of non-approved accessories.
• Dürr Dental are only responsible for the equip-
ment with regard to safety, reliability and
proper functioning where assembly, reset-
tings, changes or modifications, extensions
and repairs have been carried out by Dürr
Dental or an agency authorized by Dürr Dental
and if the equipment is used in conformity
with the Installation and Operating
Instructions.
• These Installation and Operating Instructions
conform to the relevant version of the equip-
ment and the underlying safety standards val-
id at the time of going to press. All circuits,
processes, names, software and appliances
quoted are protected under industrial property
rights.
• The translation of these Installation and
Operating Instructions has been carried out in
good faith. Dürr Dental will not accept any
claims arising from incorrect translation. The
enclosed German version of these Installation
and Operating Instructions is the final refer-
ence - in case of doubt contact the manufac-
turer or their agent.
• Any reprinting of the technical documentation,
in whole or in part, is subject to prior approval
of Dürr Dental being given in writing.
• Retain the packaging for possible return of the
product to the manufacturers. Only the origi-
nal packaging provides adequate protection
during transport of the unit. Should return of
the product to the manufacturers be neces-
sary during the guarantee period, Dürr Dental
accepts no responsibility for damage occur-
ring during transport where the original pack-
aging was not used! Ensure that the packag-
ing is kept out of the reach of children.
1.3 Notes on medical products
• This product is a technical medical appliance
and, as such, may only be operated by such
persons who, as a result of training or experi-
ence, can be confidently expected to operate
it correctly and safely for patients and staff
alike.
• Multi-socket power outlet extensions may not
be placed on the floor. Where multi-socket
power strips are used then the requirements
under EN 60601-1-1 must be strictly
observed.
• Other appliances should not be connected to
the same multi-socket power outlet
extensions.
1.4 Intended purpose
The unit is intended solely for the development
of extraoral and intraoral X-ray film in dental ap-
plications in accordance with the Dürr Dental
Film Recommendation List. The machine con-
tains a roller transport system that transports
the film after exposure with X-ray beams
through the developer, fixer and water baths
and then subsequently through the drying
sections.
Important
Information

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2018/02SE 5
1.5 Notes on EMC and medical
products
Medical products should be treated with respect
when it comes to electro-magnetic compatibility
and special safety measures must be taken.
Notes on electro-magnetic compatibility of
products for medical applications can be found
in our brochure number 9000-606-67/30 or the
information can be found on the internet at
www.duerr.de in the Download section for
Technical Documentation
1.6 Correct Usage
The unit is intended solely for the development
of extraoral and intraoral X-ray film in dental ap-
plications in accordance with the Dürr Dental
Film Recommendation List. The machine con-
tains a roller transport system that transports
the film after exposure with X-ray beams
through the developer, fixer and water baths
and then subsequently through the drying
sections.
For operation of the unit, only use parts, acces-
sories and optional accessories that have been
specified or approved by Dürr Dental. For
cleaning and disinfection of the device, only use
disinfectants and cleaning agents that have
been specified or approved by Dürr Dental. All
legal requirements that apply at the site of use in
relation to health and safety in the workplace
and to the disposal of chemicals must be com-
plied with.
1.7 Incorrect usage
Any use of this appliance/these appliances
above and beyond that laid down in the
Installation and Operating Instructions is
deemed to be incorrect usage. The manufactur-
er cannot be held liable for any damage result-
ing from incorrect usage. The operator will be
held liable and bears all risks.
This unit is not suitable for monitoring patients
over longer periods of time. The unit is not desi-
gned for operation within the patient
environment.
Only photographic chemicals that are coordina-
ted with the development process may be used.
The waste water drainage line must have a
downward gradient. The developer and fixer
must be disposed of separately as special was-
te in suitable containers in accordance with nati-
onal regulations and guidelines.
Due to the bath temperature that needs to be
maintained for the process, optimum developing
quality can only be ensured up to an ambient
temperature = bath temperature.
The unit must not be used in operating theatres
or similar rooms in which potential hazards
could arise from the ignition of flammable
mixtures.
1.8 Appliance disposal
• EU directive 2012/19/EU (WEEE / Waste
Electric and Electronic Equipment) dated 4 July
2012 and its current application in national law
clearly states that dental products are covered
by the above-mentioned directive and, as such,
are covered by special waste disposal require-
ments within the European Union.
• If you have any questions regarding the cor-
rect waste disposal procedures for this prod-
uct please contact Dürr Dental or your dental
supplier who will be pleased to assist.
1.9 Disposal of Chemicals
The empty concentrate bottles of developer and
fixer must be disposed of according to national
and local regulations. Quantities of used devel-
oper and fixer solutions, as well as any cleaning
fluids, should be disposed of according to local
rules and regulations concerning waste water.
2. Safety
2.1 General Safety Notes
This appliance has been designed and con-
structed by Dürr Dental that any danger arising
from correct usage is virtually impossible. In
spite of this, we feel it is our duty to mention the
following safety measures in order to prevent
any possible danger.
• When using this appliance all local and rele-
vant regulations must be observed!
Converting or modifying the appliance in any
way is strictly prohibited. In such cases, any
and all guarantees immediately become
invalid. The operation of modified appliances
can be punishable by law. In the interests of
trouble-free operation the operator is respon-
sible for observing these regulations.
• Installation must be carried out by a technical
expert.
• Before every use the operator must check the
functional safety and the condition of the
appliance.

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3. Warnings and Symbols
In the operating instructions the following warn-
ings and symbols have been used:
Information and/or mandatory re-
gulations or prohibitions for the
prevention of personal injury or sub-
stantial property damage
Information and/or instructions or prohi-
bitions regarding personal safety or ex-
tensive material damage.
Warning - dangerous electrical
voltage.
• The operator must be knowledgeable in the
operation of the appliance.
• The product is not designed to be used in
medical treatment areas where there exists
the danger of explosion. Areas where explo-
sions could occur are those where flammable
anesthetic material, skin cleansers, oxygen
and skin disinfectants are present. This appli-
ance is not to be used in areas where the at-
mosphere could cause fire.
2.2 Electrical safety instructions
• The appliance may only be operated using a
correctly installed power socket.
• Before connecting to the electricity supply the
appliance must be inspected and checked
that the supply voltage and the supply fre-
quency correspond to that of the local electri-
cal supply.
• Before initial use and start-up the appliance
and all supply lines must be checked for any
signs of damage. Damaged supply lines and
connections must be replaced immediately.
• Never come into contact with patients and
open plug-in connections on the appliance at
the same time.
• When using the appliance observe all the rele-
vant electrical safety procedures.
• Only use the supplied mains cable to connect
the device.
Power switch ON / OFF
/ Select parameters
Confirm selection
Switch on power
Switch off power
Each morning - open the water tap
Each evening - turn water tap off
28 x 24 h
replace chemicals every 4 weeks
Drain off the chemicals
Clean unit
3.1 Model identification plate
Order no. / model no.
Serial-No.
Observe the operating instructions
CE-Labeling without Notified Body
Number
Manufacturer
Fuses in accordance with IEC 60127-2
Health Inustry Bar Code (HIBC)
To be disposed of properly in accord-
ance with EU directive 2012/19/EU
(WEEE)

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4. Delivery Contents
X-ray film developer XR 24 Pro, model
1700-08 (230 V AC, 50/60 Hz)
accessories, complete . . . . . . . . .1700-001-00
4.1 Special accessories
The parts listed as special accessories
are not part of the standard scope of
delivery but can be ordered separately.
DÜRR Cleaning film, clear x 100 . .1410-007-00
Water hose with Aqua-Stop . . . . . 1330-001-51
Regeneration unit (230 V AC) . . . . 1700-820-00
Large collector, 20 liter
for developer. . . . . . . . . . . . . . . . . 1416-021-00
Large collector, 20 liter
for developer. . . . . . . . . . . . . . . . . 1416-011-00
Preparation container E with lid . . . 1330-015-00
Preparation container F with lid . . . 1330-016-00
Collecting system for developer. . .1700-062-00
Collecting system for fixer . . . . . . . 1700-061-00
Daylight cover DL 24
with filter disc . . . . . . . . . . . . . . . . 1700-910-00
suitable for film sizes
2 x 3 cm to max. 15 x 30 cm
Daylight cover DL 26. . . . . . . . . . . 1700-920-00
suitable for conventional film sizes
to max. 24 x 30 cm
Darkroom adapter DA 24 . . . . . . . 1700-930-00
suitable for film sizes:
2 x 3 cm to max. 24 x 30 cm
Electrical fuse,
230 V AC, T 6.3 AH . . . . . . . . . . . 9000-115-25
4.2 Disposable materials
DÜRR-AUTOMAT XR/C (with vitamin
C)
developer and fixer concentrated liq-
uids
for 2 applications . . . . . . . . . . . CXB160C9940
Spray cleaner WR 2000, for
transport roller sets, 6 x Pack . . CCB800C5540
Cleaning film Dürr Clear 100,
100 pieces . . . . . . . . . . . . . . . . . . 1410-007-00
XR Clean Set . . . . . . . . . . . . . . . . 1700-007-00
5. Technical Data
5.1 XR 24 Pro, 1700-08
Model 1700 -08
Voltage V 230
Current A 4,0
Electrical
frequency
Hz 50-60
Power output W 950
Heat output
Bath heating
Drying W
400
450
G-fuse link
IEC60127-2/V
A T6.3 AH
Warm-up time min ~20
(0.5 °C/min.)
Film processing
time
min 3,25 - 20
Bath circulation
process
Developer
Fixer (l/min)
~1,8
~2
Water circulation
rate
(l/min) ~2
Water pressure
min. water pressure
max. water pressure
bar
2
6
Tank volume
developer, fixer (l) 5 each
Fuse type IP 20
Protection class I
Surge voltage
category
II
Medical device Class I
Duty cycle ED % 100
Weight kg 25
Dimensions
(DxWxH)
cm 44 x 42 x 51
5.2 Environmental conditions
Storage and transport conditions
Temperature (°C). . . . . . . . . . . . . . . . -10 to +60
Rel. humidity (%) . . . . . . . . . . . . . . . . . . max. 95
Operating conditions
Temperature (°C). . . . . . . . . . . . . . . +10 to +25
Rel. humidity (%) . . . . . . . . . . . . . . . . . . max. 70

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6. XR 24 Pro functional layout
1 Film feed
2 Start flap
3 Roller set - film feed
4 Drive shaft
5Roller sets developer/fixer (D/F)
6Roller set - water
7 Water inflow
8Roller set - dryer
9 Safety switch “dryer”
10 Dryer heating
11 Fan
12 Drive motor
12a Speed sensor
13 Fluid level indicator sensor “Water”
14 Rotary pump (for D and F)
15 Water intake valve
16 Circulation heater
17 PTC-sensing device
18 Overflow pipe F with drainage plug
19 Lifter
19a Light barrier for lifting bath
20 Lift motor
21 Overflow pipe D with drainage plug
22 Lifting bath
D Developer bath
F Fixer bath
W Water bath
A Power switch on main display
Stand-by Position
2 A 3 4 5 6 7
20 19 19a 18 17 16
8
9
10
11
12
13
14
15
22
21
1
F
W
E
12a

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7. XR 24 Pro functional
description
Press the power switch (min. 2 secs)
and the display lights up. The warming-up pha-
se for the developer and fixer baths begins. The
necessary waiting time required before the re-
quired temperature has been reached is shown:
"WAITING . . MIN" (display panel blinks). The
unit will not start during this warm-up stage.
The bath circulation process starts parallel
to the bath heating. During the circulation step
the rotatory pump (14) feeds the chemicals from
the developer and fixer baths (tank volume of
each is 5 liters) to the lifting bath (22).
Once the set temperature has been
reached the display will show "MACHINE
EMPTY", i.e. the unit is now ready for use.
As soon as the set temperature falls by more
than 0.5 °C the process heater and rotary pump
(14) will start up again.
When a film is inserted, the film feed flap (2)
opens and the display will show a blinking mes-
sage: "MACHINE LOADED".
At the same time a signal is triggered to lower
the lifting bath (22), the water intake valve (15) is
opened, and the dryer heater (10), drive motor
(12) and the rotatory pump (14) (for developer
and fixer bath circulation) all start up.
The processing time can be checked using
the speed sensor (12a). The raising and lowe-
ring of the lifting bath is controlled by the rotati-
on of the disc (driven by the lift motor (20)) and
is monitored by the infrared light sensor (19a).
When the lifting bath (22) is lowered the film is
transported between the rollers and through the
developer and fixer baths, and then through the
rinsing and drying zones (8) in the preset pro-
cessing time.
During the film processing, water is released via
the water inflow (7) into the rinsing zone. The
water is drained off via the waste water system.
There is a continuous flow of water of ca. 2 l/
min, at 2 bar. If the waste water drainage gets
blocked, then the level indicator sensor (13)
sends an audible signal, the water intake valve
(15) is closed and the water inflow is halted.
Once the film has been taken up the film feed
flap (2) closes. As soon as the blinking mes-
sage "MACHINE LOADED" on the display panel
is extinguished, then a further film or 6 intraoral
films side-by-side can be fed in.
If, after the film processing stage (message is
audible signal), no further film is inserted, then
the lifting bath (22) is raised (stand-by position
"MACHINE EMPTY"). The drive motor (12), wa-
ter intake valve (15) and dryer heater (10) will
then be switched off. In the stand-by position
the developer and fixer roller set (5) is complete-
ly submerged in the chemicals. This serves to
prevent the majority of any deposits attaching
themselves to the rollers.
7.1 PCB (main board) layout
23 A Operating parts
23 B Control functions
23 C Power functions
23 A
23 B 23 C

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8. Set-up
8.1 Room for set-up
• The XR 24 Pro developer may only be operat-
ed in a clean, dry and well-ventilated room.
• Room temperature must not fall below +10 °C
in winter and must not exceed +28 °C in
summer.
• The room chosen for set-up must have ac-
cess to a water connection (water tap) (27)
R3/4" with pipe anti-vacuum device, waste
water drainage (28) with aeration (anti-odour)
via plastic siphon and an electrical safety
socket (26). We strongly recommend that a
wash basin be available in the vicinity of the
developer.
The water tap (27) and electrical safety
socket (26) must be easily accessible to
the operating personnel.
• We strongly recommend that set-up of the
XR 24 Pro is effected in a darkroom. If the ap-
pliance cannot be set up in a darkroom, then
a daylight cover (24) (DL 24 or DL 26) must be
fitted.
• When operating an appliance with daylight
cover (24) please note:
Never expose the machine to direct
sunlight! Danger of the chemicals
overheating or pre-exposure of film
materials. Never store film material
in the vicinity of the X-ray room!
Once film material is inserted into the
film depot (25) of the daylight cover the-
re is the danger that pre-exposure can
occur due to stray ambient radiation
from the X-ray appliance.
• If necessary, it is possible to set up a separat-
ing wall or barrier using lead protection.
27
26
28
24
25
Mounting
1
2
3

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24
8.2 Set-up alternatives
• Place the developer unit onto a horizontal,
stable, flat, and single-piece working surface
at a comfortable working height.
• In order to have access to the hoses the
working surface should have at least one
opening of ca. 7 x 10 cm.
• Take into account that additional space may
be required for service and maintenance and
that sufficient ventilation is available for the
unit: to the rear leave at least 10 cm, left and
right allow ca. 50 cm free space
• Leave enough space at the front in case a
daylight cover (24) is to be used. If necessary,
unscrew the adjustable feet from the front and
apply to the rear.
8.3 Set-up
• First remove the plastic tapes to the
packaging and carefully lift the box upwards.
• Remove all small parts.
• Take the unit from the sides and place as
required.
• Set up the unit in the vicinity of water supply,
waste water system and electrical safety
socket (max. distance 1.5 m)
• Set up the appliance so that it has a slight tilt,
ca. 0.3 ° to the fixer bath (fig. 6). Adjust the
feet of the appliance (29) using the spanner
provided (30) as required.
29
30
4
5

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9. Installation
9.1 Water connections
• Check that clean, clear water flows from the
water tap (27).
When installing for the first time make
sure the connection is allowed to flow
and rinse first!
• Because of great regional differences in the
water quality a fine filter (32) must be fitted be-
tween the water tap (27) and water hose (34).
The fine filter (32) protects the flow regu-
lator in the water intake valve of the ap-
pliance from becoming dirty.
• Turn off the water tap (27).
• Connect the 90° elbow piece (33) to the water
tap (27), mounting the fine filter (32) (arrow in
direction of flow) and the double nipple piece
(31) at the same time.
Check that the coarse filter (34a) and
both seals (34b) are present in the
threaded fitting of the water hose (34).
• Connect the water hose (34) to the water in-
flow (35) of the appliance (threaded pipe fitting
with coarse filter) and connect to double nip-
ple piece (31).
9.2 Waste water connections
• The waste water connection must include a
siphon trap.
• Lay the waste water hose (36) with a steady
incline to the siphon trap:
Shorten the hose to an appropriate length
34
35
36
27
31
32
33
34
34a
34b
6
7
8

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40
41
39
43
41
39
Fixer
max. 3 cm
37
38
25
When laying out the waste water
hoses the following must be careful-
ly observed:
- avoid sagging hoses!
Avoid squeezing or reducing the
pressure on hose!
• The external ends of the hoses should be
coated with UHU-Plast.
• Screw the screw socket (37) onto the hose
and fit to siphon trap muff (25) using a hose
clamp (38).
• Secure the waste water hose using hose
clamp, screws and rawlplugs.
9.3 Waste water hose connection
from developer and fixer
• Place the 10l-collector tanks (39) for develop-
er (black level indicator marker) and fixer (red
level indicator marker) below the appliance in
a clearly visible position and free from the
possibility of tilting.
• Lay hoses (40) with constant incline
• Shorten the hoses to the correct length.
• Feed the hose for developer (black markings)
into the black cover (41).
• Screw the cover (41) of the developer collec-
tor (39) on tightly.
• Fix the hose for fixer (red markings) in the
same way to the fixer collector.
Empty the collector vessel when the
level indicator marker (43) shows
full - danger of overspill! Disposal
of the developer and fixer requires
observance of all regional rules and
regulations! In Germany and many
other countries, x-ray chemicals
must be disposed of separate-
ly as special waste: check local
regulations.
9
10
11

EN
14 2018/02SE
44
45
8
8
6
5
3
90
90
10.Start-up and first use
10.1 Clean unit
• Remove the cover.
• Remove the floating covers to developer and
fixer baths.
• Open the green catch (44) and locking
devices (45).
• Swing the dryer roller set (8) towards the
back.
• Extract the roller sets for water (6) and devel-
oper / fixer (5).
• Swing the display (90) upwards.
• The display can also be lifted upwards and
then laid to the side on the left.
• Extract the roller set film insertion (3).
12
13
14

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61
22
11.Electrical connection
The unit is set up for a supply volta-
ge of 230 V (see model identification
plate). Before connection of the
main power cable it is important to
check whether the required voltage
is available, otherwise the appli-
ance can be damaged. Use the Dürr
mains cable supplied. The unit must
only be used in completely closed
state - with all side panels and co-
ver fitted and closed - before con-
necting to the mains power supply.
• Connect the power plug (61) into the appli-
ance and into the main power socket.
• Press the lever to the side and remove the lift-
ing bath (22).
• Clean the roller sets, lifting bath and tanks us-
ing a damp sponge.
"Preparation of chemicals "
and
"Insertion of roller sets"
see sections 16.1.3 and 16.1.4
15
16

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16 2018/02SE
12.Circuit diagram
12.1 PCB (main board) operating functions
12.2 PCB (main board) control functions
(see also parts 23 A and 23 B under section 7)
U1Light barrier to cover
U2 Light barrier to cover U3 Light barrier lifting bath U4 Light barrier to film insertion slot R1 Temperature sensor "Bath temperature" X5 Level indicator sensor "Water" M1 Speed sensor
12.1 12.2
23 B
23 A

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M1Roller drive motor
M2 Ventilation fan
M3 Rotary pump
M4 Lifting bath motor
R1 Bath heating
R2 Dryer heater
Y1 Water intake valve
X1/X2 Power supply
X3 Regeneration unit
12.3 PCB (main board)
power functions 230V
(see also part 23 C under section 7)
12.3
23 C

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13.Start-up and first use
The developer unit XR 24 Pro has 3 different
settings for the processing time, and is factory
set at the following values.
Intraoral films 6 min (program INTRA)
Extraoral films 4 min (program EXTRA)
Endodontal films 3:15 min (program ENDO)
Please note: X-ray films with such short proces-
sing times are not suitable for archiving.
-Developer / fixer bath temperatures 28°C
-Dryer performance 30%
When using other film types requiring different
processing times and dryer performance the the
values will need to be changed as appropriate.
Refer to the film list, section 15.7.
For a program overview refer to the section
"Usage"
The unit must only be used in com-
pletely closed state - with all side
panels and cover fitted and closed
- before connecting to the mains
power supply.
Every time the unit is switched on at the
power switch then program "INTRA" is
started, i.e. after the unit is switched off
there is an automatic reset to "INTRA".
Guidance on using the unit and the
display for the operator can be found
in section "Usage", section 15.
A complete description of the service
operation can be found on the section
covering Maintenance 19.6.
The developer unit must never be
operated when the roller set is not
present!
Where the roller sets are not inserted
then there is pressure being exerted
vertically upwards on the developer
and fixer fluids and could splash out.
Chemicals irritate eyes and skin
and there is the danger of serious
eye damage.
Without developer and fixer roller sets there can
be no return of chemicals to the ap-
propriate containers.
There is also the danger of the
chemicals mixing.
The developer unit must never be operated
without fluids (chemicals, water)
as this can lead to the heating
breaking down.

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13.1 Settings / service operation for
the Service Technician
• Open the water tap.
• Check unit and all connections for signs of
leakages
• Start service operation
press + simultaneously
(min. 4 secs) unit is now in Service mode
• Select service function
Use key and Service Function to
select
• Change settings
with or change parameter values
using 1 s, confirm new values
• *1 The selected Language, Frequency or
Value is immediately displayed on restart
*2 Factory settings
Change values using and in
5 and 5% steps, confirm with
• End Service operation
Switch off unit at power switch (press
min. 2 secs)
• Set parameters e. g. Language, Electrical
frequency, etc. at the display using pro-
cess steps:

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13.2 Check temperature of the de-
veloper and carry out commis-
sioning test
The following procedure is shown as an
example for use in Germany. When al-
tering for other countries take local situ-
ations (e.g. regulations) into account!
• Switch on the unit and wait for the warm-
ing-up phase of the developer bath to finish,
see also "15.1 In the morning or before sur-
gery start"
• To check the temperature of the developer,
switch off the unit.
• Unplug at the mains and remove all power.
• Close the water tap.
• Remove the cover.
• Measure the temperature of the developer
(front left to a depth of ca. 20 cm).
The temperature of the developer must agree
with temperatures given in the film list, e.g.
+28 °C +/- 0.5 °C.
• Record temperature in Acceptance Log and
Constancy Test Records.
• Replace cover, plug in at the mains, open wa-
ter tap, use to switch on unit.
• Insert test film and carry out Acceptance Test
according to x-ray regulations. Record test re-
sults in test report. - Archive the test film.
Inform operating staff that regular constancy
checks must be carried out.
17