Durr Dental XR 24 Nova Series User manual

47
CONTENTCONTENT
CONTENTCONTENT
CONTENT
Important Information
1. Notes ...................................................... 48
1.1 CE - Labeling .................................. 48
1.2 Guidelines ....................................... 48
1.3 General Notes ................................. 48
1.4 General Safety Information............. 48
1.5 Using Peripheral Devices .............. 49
1.6 Use of Orthochromatic Film ............ 49
1.7 Electrical Safety Notes ................... 49
1.8 Warning Information and Symbols .... 49
2. Product information ............................ 50
2.1 Use for the Intended Purpose ....... 50
2.2 Use other than that for the
Intended Purpose........................... 50
2.3 Product Description ....................... 50
3. Scope of delivery .................................. 50
3.1 Special Accessories ....................... 50
3.2 Consumable material ...................... 51
4. Technical data ....................................... 51
5. Description of function....................... 52
6. Functional description ......................... 53
6.1 XR 24 Nova ..................................... 53
6.2 Controls and Adjustments.............. 54
6.3 Electronic Adjustments ................... 55
Assembly
7. Setting up .............................................. 56
7.1 Installation Room ............................. 56
7.2 Installation Possibilities ................... 56
7.3 Mounting.......................................... 57
8. Installation ............................................ 57
8.1 Water Supply .................................. 57
8.2 Waste Water Connection ................ 58
8.3 Connection of the Developer and
Fixative Outlet Horse Pipe .............. 58
9. Before starting up ................................ 59
9.1 Clean the Machine .......................... 59
9.2 Bleed the Air from the Rotary Pump ... 60
9.3 Fill in the chemicals ......................... 61
9.5 Attach the Housing Covers ............ 62
9.4 Insert the Rotary Pump again ........ 62
9.6 Insert the Roll Packages ................ 63
10. Electrical connection ........................... 64
11. XR 24 Nova Wiring diagram ................ 66
11.1 XR 24 Nova Circuit Board
Connections .................................... 67
12. Putting into operation ......................... 68
12.1 Final Inspection ............................... 68
13. Transportation ...................................... 69
13.1 Remove the Outlet Hose Pipe ........ 69
13.2 Protection from Damage ................ 69
Use
14. Operation ............................................... 70
14.1List of reccomended films for Dürr
XR 24.. developing machine. .......... 72
15. Maintenance .......................................... 73
Every four weeks ................................... 73
Every three months ................................ 73
Every six months.................................... 73
15.1Changing the Chemicals ................ 73
Trouble shootingfault identification
16. Tips for users ........................................ 78
17. Tips for technicians ............................. 80
18. Tips for tracing faults .......................... 82
18.1Please Note before Starting Work . 82
18.2Remove the Front Cover ................ 82
18.3Remove the Rear Cover ................. 82
18.4Remove the Side Covers ............... 82
18.5After finishing Work ........................ 82
18.6Check Machine Fuse ...................... 83
18.7Setting the Developer Bath
Temperature .................................... 83
18.8Replace the PTC Sensor ................ 84
18.9Replace the Seal Lip Strip .............. 86
18.10 Clean the Rotary Pump ................ 87
18.11 Check/Replace the Water Valve .. 87
18.12 Replace the ”Water” Floating Switch 88
18.13 Darken Indicator Lights ............... 88
Waste disposal
19. Disposal of the machine ..................... 89
Spare parts
XR 24 Nova .............................................. 96-99

48
IMPORTANT INFORMATION
1. NOTES
1.1 CE - Labeling
CE- Labeling according to Medical Products
Guidelines for Class I Products.
This product carries the CE - label according
to the Guidelines concerning Medical
Products 93/42/EWG and satisfies all criteria
of Appendix I of these guidelines.
1.2 Guidelines
This unit satisfies the standard EN 60601-1-2
for Electromagnetic Compatibility - Medical
Electrical Appliances.
1.3 General Notes
• These Installation and Operating
Instructions form an integral part of the unit.
They must be kept close to the unit and in
readiness whenever required. Precise
observance of these instructions is a pre-
condition for use of the unit for the intended
purpose and for its correct operation.
• Safety for the operator as well as trouble-
free operation of the unit are only ensured if
use is made of original equipment parts.
Moreover, use may only be made of those
accessories that are specified in the
technical documentation or that have been
expressly approved and released by Dürr
Dental for the intended purpose.
Dürr Dental cannot guarantee for the safety
or proper functioning of this unit in the case
where parts or accessories are used which
are not supplied by Dürr Dental.
• There is no guarantee against damage
arising where parts or accessories are used
which are not supplied by Dürr Dental.
• Dürr Dental only regard themselves as
being responsible for the equipment with
regard to safety, reliability and proper
functioning if assembly, resettings, 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 equipment and the underlying safety
standards valid at the time of going to press.
All switches, processes, trade marks,
software programs and appliances named
in this document are registered names.
• Any reprinting of the technical
documentation, in whole or in part, is
subject to prior approval of Dürr Dental
being given in writing.
1.4 General Safety Information
• Retain the packaging for possible return of
the product to the manufacturers. Ensure
that the packaging is kept out of the reach
of children. Only the original packaging
provides adequate protection during
transport of the unit.
Should return of the product to the
manufacturers be necessary during the
guarantee period, Dürr Dental accepts no
responsibility for damage occurring during
transport where the original packaging was
not used!
• This product is a medical-technical appliance
and may only be operated or used by
someone who has been trained or who has
experience of how to use the appliance
correctly.
• Before every use the operator must check
the functional safety and the condition of
the appliance.
• 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
explosions could occur are those where
flammable anesthetic material, skin cleansers,
oxygen and skin disinfectants are present.
This appliance is not to be used in areas
where the atmosphere could cause fire.

49
1.8 Warning Information and Symbols
In the Installation and Operating Instructions,
use is made of the following terms or symbols
to denote data or information of special
importance:
Information and/or mandatory
regulations or prohibitions for the
prevention of personal injury or
substantial property damage.
Warning of dangerous electrical
voltage
Special information regarding the
economical use of the machine and
other information
Floating Application Part Type BF
CE Marking without Notified Body
Number
Observe Installation and Operating
Instructions
In the mornings - turn the water tap on
In the evenings - turn the water tap off
Mains switch On
Mains switch Off
Warming-up Phase (Mains switch on)
(Yellow indicator light)
Ready for Operation
(green + yellow indicator light)
No film insertion (”Busy” light) (orange
indicator light)
variable (fast through-put)
(red indicator light)
Service button (only for the technician)
2 sec.
1.5 Using Peripheral Devices
• Units may only be connected to the system
or to other units when it has been
established that there is no reduction of
safety for the patient, the operator or the
environment through such connection.
Where it is not absolutely clear from the
documentation whether the safety is
reduced by such connection, then the
operator must establish, e.g. by contacting
either the manufacturer or an expert, that
there is no reduction of safety for the
patient, the operator or the environment
through such connection.
1.6 Use of Orthochromatic Film
In order to avoid wrong exposure where work
is being done in the dark-room with thin-layer
(extra-oral) RP films without any dark-room
attachment the intensity of lighting from LED
displays and the lighting in the dark-room
itself should be turned down. Only a qualified
technician should carry out the necessary
work.
1.7 Electrical Safety Notes
• The Developermachine may only be
connected to an earthed safety socket.
• Before connecting the appliance to the
power supply check that the electrical
current and the frequency of the device as
described on the appliance are compatible
with that of the power supply.
• Check the appliance and the power supply
cables for possible damage before
switching on. Damaged cables, plugs and
sockets must be replaced before use.
• Never touch open supply outlets and
patients simultaneously.

50
3. SCOPE OF DELIVERY
X-ray film developer XR 24 Nova
Model 1700-06 (230 V AC, 50-60 Hz)
Model 1700-07 (100-110 V AC, 50-60 Hz)
Dürr cleaning instructions...... 9000-600-14/01
Accessories, complete ............... 1700-001-00
Starter package XR 24 Nova ...... 1700-050-00
3.1 Special Accessories
The following parts are not included with the
machine.
Please order separately!
XR Clean-Set
Cleaning bath for cleaning the
roll packages, 2 x film-transporter
cleaners, 2 x sponges ............... 1700-007-00
Plug-in checking device for
maintenance work ...................... 1700-010-06
Dark-room light........................... 1482-000-00
Regeneration machine (230 V) . 1700-820-00
(110 V) . 1700-830-00
Clip-on tank for developer
(black cover with no hole) .......... 1330-015-00
Clip-on tank for fixative
(red cover with no hole) .............. 1330-016-00
Catchment tank, 10 litres
for developer ............................... 1700-062-00
Catchment tank, 10 litres
for fixative .................................... 1700-061-00
Catchment tank, 20 litres
for developer ............................... 1416-021-00
Catchment tank, 20 litres
for fixative .................................... 1416-011-00
Daylight attachment DL 24
with filter disc .............................. 1700-910-00
without filter disc ......................... 1700-915-00
suitable for the following film sizes:
2 x 3 cm up to a maximum of 15 x 30 cm
Daylight attachment DL 26 ......... 1700-920-00
suitable for all film sizes in common use
up to a maximum of 24 x 30 cm
Dark-room attachment DA 24 ..... 1700-930-00
suitable for the following film sizes:
2 x 3 cm up to a maximum of 24 x 30 cm
Electrical fuses for model 1700-06, 230 V
T 6,3, IEC 127-2/V ....................... 9000-115-25
for model 1700-07, 110 V
T 10, IEC 127-2/V ........................ 9000-115-50
Display module for high-precision adjustment
of electronic system .................... 1700-992-00
2. PRODUCT INFORMATION
2.1 Use for the Intended Purpose
The Dürr XR 24 Nova X-ray film developing
machine is designed exclusively to develop
extra-oral and intra-oral X-ray films
automatically as shown in the Dürr list of
recommended films.
Use for the intended purpose includes
observance of the Installation and Operating
Instructions as well as the installation,
operating and maintenance conditions.
Use for the intended purpose also includes
adherence to all statutory regulations in force
at the place of installation regarding workers’
safety and the disposal of chemicals.
2.2 Use other than that for the
Intended Purpose
Any other use or use beyond what is specified
is deemed to be not for the intended purpose.
The manufacturer accepts no liability for
damage resulting therefrom. All risk is borne
solely by the user.
2.3 Product Description
The Dürr XR 24 Nova X-ray film developer
possesses an automatic Start-Stop device.
When the machine is ready for operation, it
will start automatically as soon as a film is
inserted. The next film can be inserted after
only about 20 seconds (when the indicator
light ”No film insertion” goes out). The film is
transported inside the machine through the
developer and fixative bath and then through
the wash tank and the drying zone. About 1
minute after the film has run through all the
stages the machine automatically switches
over to stand-by mode.

51
4. TECHNICAL DATA
XR 24 Nova X-ray film developer
Model 1700-06 (230 V)
Model 1700-07 (110 V)
Nominal electrical rating
Model 1700-06 1700-07
Voltage (V) 230 100-110
Frequency (Hz) 50-60 50-60
Power consumption (A) 4,4 9,2
Fuse T 6,3 T 10
Output (W) 1050
Heat output
Bath heating (W) 400
Drying (W) 500
Operating figures
Warm-up time (0,5°C/min) approx. 20
Film through-put time (min)
normal approx. 6
variable see list of recommended films
Bath circulation (l/min)
developer approx. 1,8
fixative approx. 2,0
Water flow rate (l/min) 2
Water pressure (bar)
min. water pressure 2
max. water pressure 6
Tank volumes (litres) each 5
Developer, fixative
Temperature range
Machine in operation .............. +10 bis +28 °C
Storage and transport ............. - 25 bis +70 °C
Atmospheric humidity
Machine in operation ...................... max. 80 %
Storage and transport ..................... max. 95 %
Dimensions ... T=51 cm, B=42 cm, H=44 cm
Weight................................................... 25 kg
Safety category ................................... IP20
Safety class ................................................ 1
Inspection label ............................ CE-label
3.2 Consumable material
DÜRR-AUTOMAT XR
Developer and fixative concentrate
for 2 batches .......................... 1330-080-00/40
Film transport cleaner for cleaning
the roll packages, pack of 2. . 1700-009-00/40
WR 2000 spray cleaner, for
transport rollers, pack of 6..... 1700-005-00/02

52
Stand By Position
23 4 5 67
20 19 18 17 16
8
9
10
11
12
13
14
15
23
22
21
17
1
5. DESCRIPTION OF FUNCTION
1Film intake
2Start flap
3Roll package for film intake
4Drive shaft
5Roll package for developer/fixative
6Roll package water
7Water inlet
8Roll package drier
9”Drier” safety switch
10 Drier heater
11 Fan
12 Drive motor
13 Floating switch ”Water”
14 Rotary pump (for E and F)
15 Water valve
16 Continuous-flow heater
17 PTC sensor and regulator
18 Overflow pipe F with outlet stopper
19 Lift bar
20 Lift motor
21 Overflow pipe E with outlet stopper
22 Electronic circuit board
23 Lifting bath
EDeveloper bath
FFixative bath
WWater bath

53
6. FUNCTIONAL DESCRIPTION
6.1 XR 24 Nova
After the mains switch has been pressed,
the yellow indicator light will come on. So long
as it remains on, the developer and fixative
bath will be warming up until it reaches the
temperature set on the PEC regulator (17).
The machine cannot start up during the
warming-up phase.
The bath circulation runs parallel to the
bath heating unit, and the return run takes
about 60 seconds. During this time, chemicals
are pumped up by the rotary pump (14) from
the developer and fixative tank (each of which
has a volume of 5 litres) into the lifting bath (23)
When the pre-set temperature is reached,
the yellow and green LED indicator lights will
come on to show that the machine is ”on
stand-by” (the stirrer pump (14) and the
continuous-flow heater (16) remain switched
off).
When a film has been inserted the start flap
(2) opens, which sets off a signal for the lifting
bath (23) to be lowered. The water valve (15)
opens at the same time, and the drier heater
(10), drive motor (12), and rotary pump (23)
start up (the pump circulates the chemicals).
The orange indicator light starts to flash, to
show that the machine is in use, and
continues to flash until the film has been
completely drawn in, it then goes out after a
delay of 20 seconds.
With the lifting bath (23) lowered, the film is
transported between the rollers through the
developer and fixative bath and through the
wetting and drying zone (8). At the same time,
the chemicals are constantly being circulated.
While the film is being developed, water is fed
over the water inlet (7) into the wetting zone
and out again through the outlet. There is thus
a continuous water throughput of about 2
litres/minute.
Should the water outlet ever be blocked, a
floating switch (13) closes the water valve (15)
and interrupts the flow of water.
When the film is inserted the start flap (2)
closes. After a delay of about 20 seconds the
orange indicator light stops flashing and the
next extra-oral film can be inserted.
If no further film is inserted, about 1 minute
after the end of the film through-put process
the lifting bath (23) moves upwards (to its
stand-by position).
The drive motor (12), water valve (15) and
drier heater (10) are switched off, and in the
stand-by position the developer and fixative
roll package (5) is completely immersed in the
chemicals. This almost completely prevents
the formation of deposits on the rolls.

54
2 sec.variable
DCBA
6.2 Controls and Adjustments
125B 125A
125A Button for second through-put time
125B Service button
A Mains switch
B LED, yellow: warming-up phase,
approx. 20 minutes
C LED, green: on stand-by (ready for operate)
D LED, orange: ”busy” indicator

55
6.3 Electronic Adjustments
117 LED-dimming plug: plugging the bridge
in allows LEDs B, C, D, which show the
operation status on the cover, to be
switched to LIGHT or DARK in order to
suit the surrounding conditions or the film
sensitivity.
Example: Machine is set up in the dark-
room, where orthochromatic films are used
(e.g. T-Mat G) = LED dimming set at DARK
118 LED lights up when the Service function
is activated.
119,125B Service button
120 Bath temperature potentiometer: for
adjusting the bath temperature
Range of adjustment 20 - 40°C
Works setting = 28°C
121 Process time potentiometer: for setting a
second through-put time
Range of adjustment 3 - 20 minutes
Works setting = 3 minutes
122 Drier 6 minutes potentiometer: drier
output can be adjusted in conjunction
with the 6-minute through-put time.
Range of adjustment 0 - 100%
123 Drier variable potentiometer: drier output
can be adjusted in conjunction with the
variable through-put time.
Range of adjustment 0 - 100%
124 Light beam, flap
125A Button for second through-put time
125B, 119 Service button
Pressing the service button allows the
developer to be turned on for test
purposes. The service button remains
activated for about 20 minutes, during
which time the orange indicator light
flashes.
Pressing the service button again
reverses the command. The orange
(”busy”) LED continues to flash until the
lifting bath has returned to the upper
position.
If a film is inserted into the film intake
while the service button is activated, the
film intake flap is pressed and the normal
film through-put process starts. This takes
precedence over the service button
function.
126 Service plug: a display module can be
connected here to show the pre-set and
actual bath temperature, percentage drier
output, through-put time, etc.
127 6 minute through-put time plug
Plugging the bridge to OFF enables the
6-minute through-put time to be switched
off.
There is then one other through-put time
which can be adjusted at the process
time potentiometer (121).
128 LED top: lifting bath is in the upper
position.
129 LED bottom: lifting bath is in the lower
position.
If neither of the two LEDs is on, the lifting
bath is travelling either upwards or
downwards.
130 LED film: Film intake flap has been
actuated.
131 LED synchronisation motor: the lift
motor for the lifting bath is switched on,
and the lifting bath is travelling either
upwards or downwards.
132 LED drier: the heater for drying the film is
on.
133 LED water valve, fan: the water valve is
open and the fan is on.
134 LED bath pump: the rotary pump is on.
135 LED bath heating: the continuous-flow
heater is on.
136 LED roller driver: the driver motor is
activated. The LED flashes at a rate that
corresponds to the speed of the motor.
Electronic regenerator (141)
The electronic regenerator (141) is fitted to the
electronic circuit board at slot (137). The
regeneration time is set at 30 seconds (=
approx. 190 ml developer and fixative) on the
machine as delivered.
137 Slot for electronic regenerator
138 Development time potentiometer: the
regeneration time can be set between >0
and 60 seconds.
139 Power Regenerator plug:
Bridge at OFF: in this position the
regenerator pump switches on after 1.3
metres of film have been developed.
Bridge at ON: in this position the
regeneration is switched on not only at
the normal regeneration phase but also
every time the mains switch is switched on
140 50%/100% plug: if the bridge is plugged
at the ”50%” position, the pump running
time set at the potentiometer (138) is halved
141 Electronic regenerator

56
1
2
3
26
10
7
5
51
1,5m
44
42
24
25
27
ASSEMBLY
7. SETTING UP
7.1 Installation Room
• This XR 24 Nova X-ray film developer is only
allowed to be installed in a dry, well
ventilated room.
• The room has to have an R 3/4" water outlet
(24) with pipe ventilation, a water outlet (25)
with a ventilated plastic odour closure, and
an earthing-contact type socket (26). It is
also advisable to have a wash-basin or sink
in the immediate vicinity of the developing
machine.
The water tap (24) and the earthing-
contact type socket (26) must be
easily accessible to the operating
staff.
• The indoor temperature must not be allowed
to drop below +10°C in winter or to exceed
+28°C in summer.
• We recommend that the XR 24 Nova should
be installed in a dark-room.
If the machine is not set up in a dark-
room a daylight attachment (27) (DL
24 or DL 26) should be fitted in order
to prevent the film from being exposed
to daylight.
The developer should never be
exposed to direct sunlight! If the
sunshine is too strong, the
chemicals will overheat and ruin the
films.
7.2 Installation Possibilities
• Set the developer (it weighs approx. 35 kg)
on a steady horizontal work-top at a
convenient working height.
• The work-top has to have an aperture
approx. 7 x 5 cm through which the hose
pipes can be led.
• The machine needs at least 10 cm free
space to the rear and about 50 cm free
space for service work and sufficient
ventilation to its left and right side. It is best
to provide enough space in front for a
daylight attachment (27). It is sufficient if the
daylight attachment, once installed, projects
about 5 cm from the worktop.

57
4
5
6
28
29
24
33
30
32
31
34
31
7.3 Mounting
• Take out all small parts.
• Take hold of the machine at the sides and
lift it out of its box.
• Set the machine up near the water supply,
the water outlet, and the earthing-contact
type socket (no more than 1.5 metres away
from any of them).
• Take the side housing covers and hose
pipes out of their hard-foam packaging.
• Remove the hard-foam packaging from the
front and the back.
Make sure that the front and rear
housing covers do not fall out of the
packaging.
• Adjust the feet (28), using the spanner (29)
provided, until the machine stands
horizontally (check with a spirit level)
8. INSTALLATION
8.1 Water Supply
• Check that clear water comes out of the
water tap (24).
• Because water quality varies considerably
from one region to another, the fine filter (30)
must be fitted between the water tap (30)
and the water hose pipe (31).
The fine filter (30) protects the flow-
inhibitor in the machine’s water valve.
• Close the water tap (24).
• Fit the 90°-curved piece (32) to the water
tap (24). Install the fine filter (30) (with the
arrow pointing in the direction of water flow)
and fit the double nipple (33).
Check to make sure that the sieve
insert and both seals are fitted to the
screw-thread connection piece of the
water hose pipe (31).
• Connect the water hose pipe (31) to the
machine’s water inlet (34) (making sure that
the screw-thread connection piece is
complete with its sieve insert) and to the
double nipple (33).

58
7
35
36
38
8
9
37
25
40
41
42
39
43
41
39
Fixierer
8.2 Waste Water Connection
• Lay the outlet hose pipe (35) with a constant
downward slope.
• Shorten the hose pipe (35) to the right
length.
The outlet hose pipe definitely must
not be allowed to hang down in a
loop!
• Coat the end of the hose pipe on the outside
with UHU plast.
• Screw the screw sleeve (36) to the hose
pipe and fasten it to the siphon connector
(25) with hose clamps (37).
• Fasten the outlet hose pipe in place with
hose clamps (38), screws, and wall plugs.
8.3 Connection of the Developer and
Fixative Outlet Horse Pipe
• Set up the 10-litre catchment tank (39) for
developer (black filling level marking) and
fixative (red filling level marking) in an easily
visible position, where it cannot tip or
wobble, underneath the developing
machine.
• Lay the hose pipes (40) with a constant
downward slope.
• Shorten the hose pipes to the right lengths
(they should not project more than 3 cm into
the catchment tank (39)).
• Insert the hose for developer (black
marking) into the black cover (41).
• Fasten it with the clamping ring (42) in such
a way that it does not project more than 3
cm into the catchment tank (38).
• Screw cover (41) to developer catchment
tank (39).
• Fasten the hose pipe for fixative (red
marking) to the fixative catchment tank in
the same way.
Empty the catchment tanks as soon
as the ”full” marks (43) have been
reached – or there will be a danger
of their overflowing!
Keep to the regulations in force in
your region when disposing of used
developer and fixative!
In Germany and a number of other
countries, X-ray chemicals have to
be treated as toxic waste.

59
11
44
45
11
12
8
8
46
6
5
3
23
12
9. BEFORE STARTING UP
9.1 Clean the Machine
• Remove the cover and the transportation
packing (2 expanded polystyrene strips).
• Remove the floating cover from the
developer and fixative bath.
• Open the green stop flaps (44) and open the
closures (45).
• Swivel the roll of package drier (8) to the
rear.
• Pull the reverse plate (46) out of the roll of
package drier (8) and take out the roll
package drier.
• Take out the roll packages for water (6),
developer/fixative (5) and film intake (3) one
after the other.
• Press the lever on the side and remove the
lifting bath (23).
• Clean the roll packages, the lifting bath and
tanks with a damp sponge.

60
15
14
48
W
16
50
49
14
51
47
9.2 Bleed the Air from the Rotary
Pump
• Unsrew the cross-head bolts (47) and
remove the pump cover (48).
• Take the pump hose pipes (49) out of the
mounting (50).
• Push the rotary pump (14) upwards out of
the guide and hang it onto the rear wall of
the water tank (W) (Set the air bleed).
Make sure the rotary pump is
seatedsecurely. The pump is kept in
this position until the chemicals
have been filled in.
• Remove the transport packing (51).
(Expanded polystyrene block).

61
9.3 Fill in the chemicals
The information on pouring in the
chemicals refers to the “NEW XR
DÜRR AUTOMAT” chemistry.
• Screw the large plugs for the developer
(21) and the fixer (18) into the tanks
• Reconnect developer and fixer pumps to
collecting trays
• Place partition (52) between developing
and fixing tank.
The partition prevents chemicals from
mixing together when they are being
poured in.
Chemicals can cause damage to
health. They irritate eyes and skin.
Danger of serious injury to eyes
exists. Irreversible injuries may be
caused.
Wear protective gloves and
glasses when pouring in
chemicals.
If chemicals get into eyes, wash
thoroughly with water and consult
doctor.
Clean hands under running water
when work has been carried out.
For further information on safety
measures, see following internet site:
http://www.duerr.de.
Dürr Dental has converted from the
two-part (pict. 17) “NEW XR DÜRR
AUTOMAT” to the one-part “NEW XR
DÜRR AUTOMAT” chemistry (pict. 18
and 19). The advantages are:
- These are easier to handle and
- result in a more constant
development quality
1. Filling the fixing tanks (F) (Picture 18)
Carefully pour into large red bottle (avoid
splashes so that chemical do not mix
together) and fill with water (max. 20 ºC) to
upper marking (54).
2. Filling the developing tanks (E) (Pict.
19)
Carefully pour into large black bottle (avoid
splashes) and fill with water (max. 20 ºC) to
upper marking.
17
OLD
NEW
18
NEW
19
54
52
21
18

62
21
49
20
50
14
56
55
57
57
67
68
9.4 Insert the Rotary Pump again
• Insert the rotary pump (14) back in its guide
and push it downwards.
• Fasten the hose pipes (49) in their
mountings (50).
Lay the hose pipes parallel to one
another, ensure there are no kinks
in them, and do not lay them next to
the fan.
• Mount the pump cover and screw it down.
9.5 Attach the Housing Covers
Before attaching the housing covers,
making sure that the pump hose pipes
(49) are laid parallel to one another
and are not lying next to the fan. The
covers must not be allowed to make
kinks in the hose pipes and cables or
squeeze them.
• Attach the side covers (55) (with the
ventilation slits at the back).
• Insert the front cover (56) with the ”XR 24
Nova” lettering, and fasten it with three
cross-head screws (57).
Do not confuse the front and rear
covers! The front cover (56) is the only
one with drilled holes for fitting a
daylight attachment.
• Fit 2 quick-fitting closures (68) with washers
in the drilled holes by turning them
clockwise.
• Fasten the rear cover (67) likewise with three
cross-head screws (57).

63
22
60
59
6
5
3
46
23
44
8
45
58
9.6 Insert the Roll Packages
The developing machine must never
be operated without roll packages!
There is a danger of acid burning
your eyes !
If there are no roll packages in the
machine, the developer and fixative
liquids can squirt vertically upwards
out of the developing machine
under pressure!
There is a danger of the chemicals
becoming mixed. If there are no
developer or fixative roll packages
in the machine it is not possible for
the chemicals to follow the proper
route in the tanks.
• Insert the lifting bath (23).
• Check whether the small stoppers are firmly
screwed in.
• Insert the drier package (8) and swivel it to
the rear.
• Insert the roll packages one after the other
for water (6), developer/fixative (5) and film
intake (3).
Make sure that the guides interlock with one
another. If necessary, turn the sprocket
wheel (58) until it engages properly in the
worm on the drive shaft.
• Swivel the drier package (8) to the front.
• Insert the return plate (46) in the drier
package.
• Close the green stop flaps (44) and shut the
closures (45).
• Insert the floating cover (59) for the
developer and fixative bath.
• Replace the cover (60).
Make sure that the rim of the cover engages
completely in the guides on the housing
walls.

64
23
62
61
10. ELECTRICAL CONNECTION
The machine is designed for a
mains voltage of 230V or 100-110 V
at 50-60 Hz (see rating plate). Before
connecting the machine to the
mains, make absolutely sure that
the right mains voltage is available,
as the machine could be seriously
damaged otherwise. Use the Dürr
mains cable provided.
• Check the fuses, and if necessary replace
them. To do this, open the flap above the
mains cable connection on the rear side of
the machine.
• Ensure that the mains switch is switched
OFF.
• Insert the mains cable (61) into the machine
and into the earthing-contact type socket.
• Keep the two spare fuses (62) ready to
hand.

65

66
11. XR 24 NOVA WIRING DIAGRAM
Model 1700-06 (230V)