a^`=PROFESSIONAL
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Sirona Dental Systems GmbH
Operating Instructions DAC Professional
2 D 3370.201.01.11.02
59 57 928 D 3370
Content Page
Installation of the Dac Professional…………………………………………… 2
Maintenance…………………………………………………………………... 9
Fault 1: Vacuum system………………………………………………………. 15
Fault 2: Steam generator……………………………………………………… 20
Fault 4: Pressure Release……………………………………………………… 21
Fault 6: Ventilation……………………………………………………………. 22
Fault 8: Time base…………………………………………………………... 23
Fault 9: Door open…………………………………………………………….. 24
Fault 10: Overheating of the Steam generator………………………………… 25
Fault 12: Door locking………………………………………………………... 27
Fault 14: No feed water……………………………………………………….. 28
Fault 18: Sensor “nr” Input “ nr”……………………………………………... 32
Fault 21: Preheating…………………………………………………………… 34
Fault 22: Overheating of preheating…………………………………………... 35
Fault 26: A/D-converter………………………………………………………. 36
Fault 27: Temp.Sens.def 1,2…………………………………………………... 37
Fault 29: Battery RAM………………………………………………………... 38
Fault 31: System leak…………………………………………………………. 39
Fault 32: Power loss / Sterilize sterile filter…………………………………... 41
Fault 33: Pressure loss………………………………………………………… 42
Fault 34: Sterilization TU……………………………………………………... 43
Fault 35: Sterilization TO……………………………………………………... 46
Fault 36: Sterilization PU……………………………………………………... 48
Fault 37: Sterilization PO……………………………………………………... 49
Fault 38: Sterilisation TD……………………………………………………... 50
Fault 48: Parameters…………………………………………………………... 51
Possible solutions for drying problems……………………………………….. 52
Cycle printout…………………………………………………………………. 53
Cycle process………………………………………………………………….. 54
Saturated steam table………………………………………………………….. 55
Helix test………………………………………………………………………. 56
Bowie & Dick test…………………………………………………………….. 57
Valve diagram………………………………………………………………… 58
Diagnosis program……………………………………………………………. 59
Service program………………………………………………………………. 60
Revision history……………………………………………………………….. 61
Installation of the DAC Professional
09/21/2006 2/61 Servicemanual DAC Professional
Figure 1 General features
1 Water storage tank 11 Power cable
2 Emergency overflow (OUT) 12 Front adjustable feet of the unit
3 One-way drain (OUT) 13 Serial data and printer interface (RS 232).
In combination with NitraWin use serial modem cable
4 Spring-operated safety valve –
14
Fuses for the unit: 2 × 16 A / FF
release betw. 2.9 – 3 bar
5 Connection for demineralised /
15 Power switch
distilled water (OUT)
6 Sterile filter 16 Sliding-lock handle
7 Connection for pressure release
17 Hinged door (opens to the left)
for water storage tank (IN)
8 Cooler/Blower 18 Operator’s control and monitoring panel
19 Cover to water tank 9 Connection for demineralised /
distilled water (IN) (quick-fitted
20 Drain hose for water tank, drain side (OUT)
threaded connection for 6 x 1
hose)
10 Connection for 8 x 1 pressure
21 Drain hose for water tank, demineralised-water side (OUT)
release (OUT)
55
19
18
17
16
15
14
13
12
10
11
1
2
3
4
5
6
7
8
9
Rear view
20 21
175
150
250
Side view
370
460
70
Required Space:
09/21/2006 3/61 Servicemanual DAC Professional
Before setting up the autoclave you should make sure that the following requirements are met:
The DAC Professional is not designed to be installed in a cupboard or enclosed space. In order to
ensure adequate ventilation, there should be at least 10 cm clearance to the sides (for dimensions
see Figure1), and 10 cm clearance at the rear for connections.
Above the autoclave there must be sufficient space to allow access to the built-in water storage tank
(1) and for a good circulation of air.
The DAC Professional operates with a blower (8) on the rear of the unit, as part of the cooling
system.
The functioning and the service life of the unit can be impaired if the blower (8) is not allowed to
freely remove the heat from the unit.
Important: Before installing the unit, make sure that there is sufficient free circulation of air
around the unit.
A plane, horizontal surface is required which is sufficiently stable to support the autoclave
(unloaded weight 43 kg).
Make sure that the inside of the chamber is in level and then turn the front feet 3 times down (see
figure 2).
Figure 2
The inside of the chamber
should be in level and then
the front feet are turned 3
turns down.
Power supply
09/21/2006 4/61 Servicemanual DAC Professional
The power supply should be 230 V, 50 - 60 Hz, and 2500 W, with ground protection and a 16 A
fuse.
The power cable supplied is 1.35 m long.
If the NITRAprint® is used, then an additional power socket will be required.
One-way-outlet
The wastewater outlet should be at least 30 cm lower than the autoclave and the connection pipe
should not sag or be twisted, so that all water can drain away.
The supply with feed water (distilled or demineralised)
If an autoclave has a closed-loop water system, impurities in the water regularly lead to damage.
Therefore, the DAC Professional has a one-way system.
The autoclave automatically withdraws the feed water it needs, from the internal water storage tank
(1) which has to be refilled with purified water.
The quality of the feed water (for steam generation) must be below 15µS to comply with EN13060.
Destilled or demineralised water below 15µS.
Waste-water tank
The DAC Professional is directly supplied with demineralised / distilled water through a hose from
the built-in water storage tank (right side of the tank (front side)). The advantage of this system is
that only electric power is required, and no water from the mains. A sensor measures the water level
in the water storage tank. If the water level is too low, the system will warn the user that the tank
must be filled before the program can start. The drain water (used feed water) is collected in the
waste-water tank (left side of tank (front side)) and must be manually drained. When the wastewater tank becomes full, the system will warn the user that the tank must be drained before a
program can start. This is the standard condition of the equipment as delivered. See figure 4.
Clean and empty the wasted water tank and the clean water tank every 2nd week (see operating
manual)
Figure 4
09/21/2006 5/61 Servicemanual DAC Professional
Back view
09/21/2006 6/61 Servicemanual DAC Professional
One-way-outlet
Wastewater outflow is possible via a wall-mounted trap or a double-chamber trap under a sink.
Example is shown on figure 5. A 1 meter outlet connection pipe can be supplied on request.
The wastewater outlet should be at least 30 cm lower than the autoclave and the connection pipe
should not sag or be twisted, so that all water can drain away.
Figure 5
Back view
3
30
29
31
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09/21/2006 7/61 Servicemanual DAC Professional
fåëí~ää~íáçåëéêçíçâçää=L=
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Kunde / Customer /
Adresse, Tel.:
Address, tel.:
Adresse, tel.
Dirección, tel.:
:
Client
fåëí~ää~íáçå=oÉéçêí=L=t~êê~åíó=
m~ллйзкí
/
Cliente
Kundennummer / Customer No.
No. du client / No. de cliente
Seriennummern / Serial numbers /
Rückseite
rear
verso
dorso
Time Alarm
Press. bar psi
Temp°C °F
Sterilization
134 °C 5 min.
3 vacuum
Sterilization
121 °C 20 min.
3 vacuum
Fast sterilization
134 °C 4 min.
1 vacuum
Special
Vacuum
Sterilize
Drying
Ready
H2O max.
H2O min.
H2O max.
Test Set Power
Bowie
& Dick
vacuum
Program
Rückseite
rear
verso
START
dorso
STOP
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Händler / Dealer /
Adresse, Tel.:
Address, tel.:
Adresse, tel.:
Dirección, tel.:
Auftragsnummer / Order No.
No. de commande/No.de pedido
Numéros de série / Numéros de serie
Time Alarm Press. bar psi
Vacuum
Sterilize
Drying
Ready
Bowie & Dick
Vacuum test Set Power
T
F°
Temp. C°
min.
max.
Sterilize 1
Sterilize 2
Fast cycle
Special
134 °C
121 °C
134 °C
121-135 °C
5 min
20 min
4 min
3-60 min
3 vacuum
3 vacuum
2 vacuum
2-3-4 vacuum
SIROMINI B
Depositaire
Pos. Serial-No. Modell
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/
Depositante
DAC Universal
SIROCLAVE B
SIROPRINT
SIROSEAL
SIROCLEAN
SIROMINI B
VS
S
Inbetriebnahme gemäß bauseitiger Installationsanleitung und Montageanleitung sowie bedarfsweise länderspezifische sicherheitstechnische Kontrollen fehlerfrei durchgeführt.
Commissioning performed error-free according to the pre-installation instructions and installation instructions, as well as country-specific
safety controls where required.
Mise en service exécutée conformément aux instructions d’installation et aux instructions de préinstallation et éventuels contrôles de sécurité spécifiques au pays exécutés sans détection de défauts.
Puesta en funcionamiento según las instrucciones de instalación y de montaje en la obra así como, si es necesario, de haber efectuado
controles técnicos de seguridad específicos del país exentos de defectos.
Äußerer Gerätezustand einwandfrei / Visual inspection of unit shows no defects /
Etat extérieur correct de l’appareil / Estado externo de la unidad en perfectas condiciones
Betreiber bzw. autorisierte Person unterwiesen / Operator or authorized person trained /
Exploitant ou personne autorisée a été avisé(e) / Usuario y/o persona autorizada instruidos
Name / Name /
Kunde / Customer
Client / Cliente
Unterschrift / Signature /
Datum / Date
Date / Fecha:
Bemerkungen / Remarks /
Fehlende Teile
Missing parts
Nom / Apellido
Unterwiesene Person / Trained person /
Personne initiée
/
Persona instruida
Signature / Firma
Datum / Date
Date / Fecha:
Remarques / Observaciones
Verk äufer / Sales rep.
Vendeur / Vendedor
Datum / Date
Date / Fecha:
Tech niker / Technician
Technicien / Tecnico
Datum / Date
Date / Fecha:
Pièces manquantes
Piezas faltantes
Beschädigte Teile
Damaged parts
Pièces endommagées
Piezas dañadas
Fehlerhafte Funktion
Nonconforming functions
Funcions défectueuses
Funciones defectuosas
FÜR DEN HÄNDLER FOR THE DEALER
POUR LE DEPOSITAIRE PARA EL DEPOSITANTE
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09/21/2006 8/61 Servicemanual DAC Professional
d~ê~åíáÉé~ëë=
Das vorliegende Protokoll wird
durch den für die Installation
verantwortlichen Techniker und
dem Betreiber bzw. einer von
ihm benannten Person ausgefüllt.
Das Ausfüllen und Versenden
des Installationsprotokolls /
Garantiepasses kann elektronisch über die Serviceangebote
im Händlerbereich der SironaInternet-Seiten oder konventionell per Fax erfolgen. Anhand
dieses Dokumentes wird das
installierte Gerät bei Sirona
erfasst und stellt somit die
Grundlage zur Erfüllung etwaiger Garantieansprüche, insbesondere der erweiterten
Garantie, dar.
fåëí~ää~íáçå=oÉéçêí=L=t~êê~åíó=
m~ëëéçêí
The present document is written
by the engineer responsible for the
installation and the operator or a
person authorized by the operator.
The Installation Report / Warranty
Pass can be completed and
forwarded electronically via the
service offers located in the Dealer
domain of our Internet home page
or printed, filled out and faxed to
us. Based on this document, the
installed unit is registered by
Sirona and is the basis for
fulfillment of any warranty claims,
especially regarding extension of
the warranty period.
mêçíçÅçäÉ=ЗЫбелн~ää~íáçå=L=
ÑáÅÜÉ=ÇÉ=Ö~ê~åíáÉ
Le présent document est établi
conjointement par le technicien
responsable de l’installation et
par l’exploitant ou une personne
nommée par lui.
Vous pouvez nous renvoyer le
protocole d'installation / fiche
de garantie dûment rempli par
fax ou par voie électronique
dans l'ESPACE REVENDEURS
(onglet SERVICE ) du site
internet Sirona. Ce document
permettra à Sirona de gérer
l'appareil installé et servira de
base pour répondre aux
éventuelles revendications de
garantie, notamment de
garantie étendue.
mêçíçÅçäç=ÇÉ=ãçåí~àÉ=L=m~ë~J
éçêíÉ=ÇÉ=Ö~ê~åí∞~
El presente documento es
confeccionado por el técnico
responsable de la instalación y el
usuario y/o una persona por él
nombrada.
El protocolo de montaje y el
pasaporte de garantía se pueden
rellenar y enviar utilizando las
ofertas de servicio de la zona de
distribuidores de la página Internet
de Sirona, o bien por fax. Este
documento, con el que Sirona
registra el equipo instalado, es la
base para dictaminar sobre los
derechos de garantía,
especialmente de las garantías
prorrogadas.
ïïïKëáêçå~KÇÉ
ïïïKëáêçå~KÅçã=
Ce document n’est pas un formulaire de commande pur pièce de rechange!
Bitte senden an:
Please send to:
À envoyer à:
Enviare a:
oder:
or:
ou:
o
FAX:
++49(0)6251/16-1808
In USA please send to:
(704) 587-9394
Diese Unterlage ist keine Bestellunterlage für Ersatzteile!
This document does not constitute an order form for spare parts!
¡Este no es un documento para pedir piezas de repuesto!
Maintenance instruction and protocol
09/21/2006 9/61 Servicemanual DAC Professional
DAC Professional
1 Maintenance is to be performed every 2nd. Year or 2000 cycles.
2 Important before maintenance:
2.1 Safety instructions:
• The autoclave is still under power also it is switched off (Mains switch, Fuse
!
holders)!
• For every work that leads to let raise the pressure in the chamber, the door must be
closed safe. Check that the autoclave has locked the door (Tappet of the door lock
prevents to open the door)!
⇒ Please have the user perform a vacuum test the morning you will perform the
maintenance to shorten the time of work for the technician!
⇒ If the autoclave is connected to a water treatment system (aqua dem) e. g. SiroDem
please perform the maintenance for this device also!
3 After the maintenance
⇒ Please make two extra copies of this service record.
⇒ The original will be kept in the doctor’s office, or in the clinic or hospital. The first copy will
remain with the person who performs the service.
4 Data of Device
Serial-No:
___________________________________________
Reading on the total-cycle counter:
___________________________________________
Technician:
___________________________________________
Serviced by (company, depot, or specialized Sirona
dealer):
___________________________________________
The above-stated person has performed the maintenance work according to the following
service checklist:
The person performing the maintenance will make a check in the circle to show that he has
Year of production:
___________________________________________
Number of successful cycles:
___________________________________________
Date: Time:
______________ from: ______ to: _______
Name and address of doctor’s office, clinic, or hospital::
___________________________________________
performed the step of work
O :
Maintenance instruction and protocol
09/21/2006 10/61 Servicemanual DAC Professional
DAC Professional
5 Static Check
5.1 General instructions / Safety instructions
⇒ For the following service work, it is recommended to remove the lower part of the rear
wall of the device, in addition to the housing. The DAC Professional will remain fully
functional after these parts are removed. Warning: Be sure to observe the relevant
safety precautions that must be observed for operating the device without the rear wall
and the housing.
5.2 Check the levelling of the autoclave
⇒ Check to make sure the autoclave has been set up and positioned properly to slope to
the rear. Starting from a level position, the front feet of the autoclave must be screwed
three (3) turns for the DAC Professional. The autoclave must slope to the rear to ensure
that the residual water and condensate will properly flow out toward the rear.
O Levelling was o.k. O Levelling corrected
5.3 Check of the chamber and the tray rack
⇒ Check the chamber and the tray rack for dirt / rust.
The chamber should be checked at every use by the practice personnel.
Cleaning the chamber is not a part of the maintenance!
O Chamber / Tray rack were clean
O Chamber / Tray rack must be cleaned
O Chamber / Tray rack have been cleaned
5.4 Check the door gasket
⇒ Check the door gasket (rubber seal) to make sure that it is not damaged. Clean if
required with a mild commercial liquid cleaning agent (pH = 5 … 8; the agent must NOT
contain vinegar), or with spirits (alcohol).
O Gasket was clean
O Gasket was cleaned
O Gasket has been exchanged
______________________________________________________________________
______________________________________________________________________
5.5 Adjustment of the door locking mechanism
⇒ See Instructions in the Service manual“
O Adjustment performed
5.6 Check / grease the door lock
⇒ Check the door lock for wear or defects. Lubricate with plain silicone grease.
O Door lock greased
O Following parts were exchanged: ________________________________________
Maintenance instruction and protocol
09/21/2006 11/61 Servicemanual DAC Professional
DAC Professional
5.7 Check the door hinges for correct play
⇒ The play is too excessive when the door knocks against the door latch when closed and
the door must be lifted to be closed.
O Slight play
O Following parts exchanged because of excessive play: ________________________
5.8 Check the retaining rings of the bolts of the door hinge
⇒ Both of the hinge bolts must be secured against sliding out of place, by the use of
retaining rings on the top and lower sides of each bolt.
O Retaining rings OK
O Retaining rings / bolts were exchanged
5.9 Check / Adjustment of the door contact switch
⇒ Check and adjust the door contact (there should be 1 ... 2 mm from the display “Door
closed” to the lower limit).
O Adjustment is o.k.
O Adjustment corrected
5.10 Cleaning the cooler / fan / cooler ribs
⇒ To do this, completely disassemble the cooler and the fan, and clean the cooler ribs and
the fan on both sides with a vacuum hoover. Here it is necessary to disconnect the hose
connections, the tightening clamps of the cooler, the mounts of the blower, and the
electrical connections to the solenoid valves and fan. Then dust and clean the cooler ribs.
O Done.
5.11 Exchange the sterile filter
⇒ During every maintenance the sterile filter order no: 6126093 must be exchanged.
O Done
5.12 Check the pressure-release filter
⇒ Remove the sieve inserts for both pressure-release filters and clean them. Exchange if
necessary. The cap nuts must be unscrewed to remove the filter inserts. These nuts are
freely accessible without further disassembly of the autoclave. Helpful hint: place the
autoclave between two tables for your work.
O Cleaned
O Exchanged
Maintenance instruction and protocol
09/21/2006 12/61 Servicemanual DAC Professional
DAC Professional
5.13 Check of the electrical connections
⇒ Check to make sure that the cables are tightly connected. Make sure to carefully check
the power-conducting tab connectors (tab-and-receptacle connections) that are listed
below:
CHECKED:
O Mains switch
O Mains fuses / holders
O The proper power-supply voltage on the main board of the electronic control system
O Output of steam generator (ACOUT1) and power-voltage feed (LL, N) on the CPU-
board.
O Overheating protection for the steam generator
O Overheating protection for the Preheating
O Tighten the screw connections for all rectifier plugs
5.14 Check all hoses inside the autoclave
⇒ Check all hoses on the inside of the device to make sure that they are not damaged, and
that they are in correct position.
⇒ Tighten to finger tightness, and then use an engineer's wrench to turn one-half turn more
(½).
O Hoses and connections are o.k.
O Connections tighened
6 Functional check
6.1 Run a program "Vacuum-Test"
⇒ Carry out the Vacuum Test program with a cold autoclave (if possible by the practice
before the maintenance).
⇒ Attach the test printout at the end of this report.
⇒ Read the leak rate from the printout and the time that was used for the evacuation or
note it below.
⇒ Check and evaluate the vacuum-pump performance on the basis of the evacuation time
required for the vacuum test. Maximum time for vacuum evacuation t
time required: ……….. min. If the time is exceeded check the autoclave for leakages,
function of the solenoid valves and the performance of the vacuum pump.
Leak rate = __________________ mbar/min
Time for evacuation= ___________ min
O O.K.
O Works done: ________________________________________________________
= 2 min. Actual
max
Maintenance instruction and protocol
09/21/2006 13/61 Servicemanual DAC Professional
DAC Professional
6.2 Run a test cycle "Quick-Program"
⇒ Carry out the Fast Program with unwrapped objects. You can stop the drying phase after
2 minutes to save time. Print out the test results and enclose with this service report.
⇒ Check all connections for leakages during the sterilization cycle when the chamber has
built up a pressure.
⇒ Make an acoustic check during the test run for unusual noises (e. g. Clattering of lose
parts when autoclave vibrates.) If there are unusual noises caused by the vacuum pump
e. g. from the cavitation jet, exchange it. Add a protocol print-out and the indicator strip of
the helix-test in the below mentioned field at the end of this report.
⇒ Add the protocol print-outs (stick them in the fields at the end of this protocol)
O Leakages checked
O Acoustic check performed
O Works done: _________________________________________________________
7 Reset the maintenance counter
⇒ Resetting as described in the separate Instruction.
O Done
Maintenance instruction and protocol
09/21/2006 14/61 Servicemanual DAC Professional
DAC Professional
8 Confirmation
O The maintenance was successfully performed
O The maintenance was not successfully because of the following:
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
Additional notes:
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
We confirm that the maintenance has been performed in accordance to the above mentioned
instruction.
__________________________________________
Signature of the service technicians
___________________________________________
Signature / Stamp of the practice / clinic
9 Protocol Print-outs
9.1 Vacuum-Test:
9.2 Quick-Program:
09/21/2006 15/61 Servicemanual DAC Professional
CONFIGURATION OFCOMPONENT GROUPS IN THE AUTOCLAVE
ERROR 1 VACUUM UNIT
DAC Professional Configuration of the component
groups in the autoclave
(TOP VIEW)
FRONT
SQ1
K
VV1
VQ
Fault diagnosis for DAC Professional
Fault 1: Vacuum system
This overview shows a rough schematic of the spatial configuration of the
component groups, pipes, and hoses, in the DAC Professional. The following error
descriptions will refer to this overview to help you find the component groups to be
checked.
C
PV
VV2
F
VDA2
K
VB
F
VDA1
F
H1
PQ
SLW
Item Bezeichnung Description State of valve
when no
current is
applied (dead)
C
F
H1
K
PQ
PV
SLW
SQ1
V
VV BB
V
V DA1
V DA2
VV QQ
V
VV VV
V
VV VV
V
Kühler cooler 4
Filter filter
Dampferzeuger steam generator 1
Kessel vessel
Pumpe aqua dest pump for distilled water 5
Vakuumpumpe vacuum pump 3
Sensor Leitwert sensor for conductivity
Strömungswächter flow sensor for dist. water
Ventil (Magnet~) valve (solenoid)
B
Belüftung ventilation open 8
Druckablaß 1 pressure release 1 closed 7
Druckablaß 2 pressure release 2 closed 9
Q
Speisewasser aqua dest feed water (distilled) closed 5
1
V
1
Vakuum 1 vacuum 1 closed 6
1
2
V
2
Vakuum 2 vacuum 2 closed 6
2
ACOUT
(power
output)
09/21/2006 16/61 Servicemanual DAC Professional
Fault 1: Vacuum system
Fault diagnosis for DAC Professional
Tripping conditions:
Fault conditions may occur if the monitoring time Uet1 was exceeded for achievement of the following:
• The required evacuation pressures for the individual sub-atmospheric pulses
– P37, P38, P40, P41 for cold starts
– P1, P2, P21, P22 for hot starts
• The required evacuation pressure (P17) for the vacuum test
• The required evacuation pressure (P12) for evacuation / pressure relief
• The required minimum pressure for drying (P3).
Causes of the problem / Correction of the problem
Action / checking by operating staff:
• Check for defects and for soiling of the door seal and the sealing surfaces of the sterilization chamber,
and on the round plate around the door of the sterilization chamber. Repair and clean if necessary.
• Check to make sure that the autoclave is properly set up (it must be installed with a tilt
described in the operating instructions).
• Check to make sure that the condensate drain at the bottom of the sterilization chamber is not stopped.
It can be stopped if instruments, filter paper, etc. fall onto the bottom of the chamber.
• Check for the following:
– If you are using the internal system for supply of demineralised water, check to make sure that the
pressure-release pipe is not stopped.
– If you are using an external waste-water connection that empties into the building waste-water
system, check to make sure that this drain pipe does not have a kink (make sure the water can
flow freely out).
(at slope), as
09/21/2006 17/61 Servicemanual DAC Professional
Faults in the autoclave / Correction of faults by technical service personnel
Start the vacuum test
Is the vacuum pump
(Leak rate < 1.3 mbar/min)
Special vacuum test OK?
Æ Fault Class: Vacuum fault
Pump system too weak
Correct fault and go on with
normal program start.
Fault 1
Vacuum system
running?
Yes
Vacuum test OK?
Yes
Vacuum test OK
Leak rate OK
Pressure is stable
(System flag F11 = 1)
(Pressure stable?)
Yes
In the Service Program, raise the evacuation pressure (P17) for the vacuum test by approx. 20 mbar more than
the evacuation pressure reached during the first test. Then repeat the test. (Important: When changing
P17, make sure that P13 is always greater than P17. If necessary, also raise 13 to ensure that P13 >
P17. If this is not done, you will receive the error message “System leak”.)
Note:
No
No
No
Important: All vacuum tests must be conducted with a cold, dry autoclave. Watch the
evacuation pressure achieved here and the pressure change over time (from the display).
Æ Fault Class: Control fault / faulty pump please check the following for faults: power
output ACOUT3; fuse F1; possibly defective vacuum pump. Correct the fault, and then go
to next.
Leak rate is too great
(> 1.3 mbar) and permanent
pressure rise
Æ Fault Class: Leak fault
Repair the leak in the intake
line; then next
Æ Fault Class: Leak fault
Stop the leaks and then next
Fault diagnosis DAC Professional
Fault 1: Vacuum system
"Fault 31: System leaks"
Pressure rise over P3
(very large leaks)
The sub-atmospheric
pressure achieved is very
weak, or the pressure is
the same as in the room.
"Fault 1: Vacuum
system"
Sub-atmospheric
pressure is within the
range of moderate to
just less than the
evacuation pressure
Fault diagnosis for DAC Professional
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09/21/2006 18/61 Servicemanual DAC Professional
Fault 1: Vacuum system
Fault 1: Vacuum system
Æ Fault class: Fault in control system or function of the pump
You can check the input voltage for the vacuum pump, as well as the function of the pump, as follows:
Make sure that the intake side is vented, since the pump will not start against a vacuum. In the Diagnosis
program, switch on the solenoid valves for vacuum 1 + 2 (VV1 + VV2) by switching on the power output
ACOUT 6 (the valves are open when the current is applied).
In the Diagnosis Program, switch on the pump
(PV) by switching the power output ACOUT 3.
Does the pump now run?
Proceed to the next step in the higher-level
fault-analysis plan.
Yes
No
Check Fuse F1. Is it OK?
Yes
Test the power output
EP2-2 on the circuit board
with a meter. Out
Yes
The pump is defective.
Exchange the pump.
Æ Fault class: the vacuum performance of the pump system is too weak
► The vacuum solenoid valves 1 + 2 do not open (VV1, VV2)
• The solenoid valve, or coil, or rectifier plugs are defective.
• The activation for the solenoid valve (output 6) is defective.
Switch on output 6 in the Diagnosis program.
Check the electric control system and the switching behavior of the solenoid valve.
► The flow resistance in the intake line is too high
• Filter in the intake fitting on the sterilization
chamber is clogged up
► The pressure-sensor signal is defective, or the
processing of this signal is not correct
• The level of the pressure-sensor signal, or the signal processing,
is too high. See the section “Sensor Fault Group”.
► The suction of the vacuum pump is too weak
ut OK?
No
Exchange
fuse F1.
Exchange the
No
circuit board.
Check the vacuum performance of the membrane as follows:
1. Check to see if there are leaks.
2. Make sure that the chamber to be evacuated is empty and dry.
3. If there are no leaks, and if the chamber is empty and dry,
check the performance of the pump. It must be at least
800 mbar in 80 s, or 900 mbar in 180 s.
4. If there are no leaks, and if the chamber is empty and dry, and if the performance of the pump does not meet
the above level (800 mbar in 80 s, or 900 mbar in 180 s), then exchange the pump.
Fault diagnosis for DAC Professional
09/21/2006 19/61 Servicemanual DAC Professional
Fault 1: Vacuum system
Fault 1: Vacuum system
Fault class: leakages
Leaks in the solenoid valves
► The solenoid valve for the venting (VB) will not close, or it leaks
• Check the coil, the rectifier plug, and the control at output 8
• Solenoid valve dirty. Check the plunger / is the seating tight?
Test under sub-atmospheric conditions (Vacuum Test program)
Remove the sterile filter. Cover the opening of the sterile-filter fitting
with the palm of your hand. Then observe the pressure reading.
► The solenoid valve for pressure release 1 + 2 (VDA1, VDA2) has a leak
• Solenoid valve dirty. Check the plunger / is the seating tight?
Test under sub-atmospheric conditions (Vacuum Test program)
Observe the water column in the hose between the solenoid valve “Pressure release” and the sterile filter.
If there is a leak, water will be pulled in the direction of the solenoid valve.
Loosen the hose on the T-fitting for the cooling-water drain, close with finger, observe the pressure reading.
► The solenoid valve for the vacuum 1 + 2 (VV1 + VV2) has a leak (Vacuum Test program)
• Solenoid valve dirty. Check the plunger / is the seating tight?
Test under sub-atmospheric conditions (Vacuum Test program):
Observe the water column in the hose between the intake fitting for the chamber and the solenoid valve for the
vacuum. If there is a leak, water will be pulled in the direction of the solenoid valve.
► The solenoid valve for the feed pump (VQ) has a leak
• Solenoid valve dirty. Check the plunger / is the seating tight?
Test under sub-atmospheric conditions (Vacuum Test program):
Observe the water column in the intake hose leading to the input
of feed water between the conductivity-sensor and the intake fittings
of the pump, and on the pressure side of the pump. If there is a leak,
water will be pulled in the direction of the solenoid valve.
Leaks at the threaded connections and adhesive bonding
Test under sub-atmospheric conditions: start the “Leak search” procedure in the Diagnosis Program (0.3 bar, for
8 min). Or, feed compressed air into the autoclave through the vent-filter fittings (in Diagnosis program, close
output 8, “MV vent”). Brush a soapy solution on the points shown below and check to see if there are any air
bubbles.
Adhesive-bonded threaded hose
connections at the chamber
Plug of the pressure-release
filter
Adhesive bond for the T-fitting in
the pressure-release filter
Threaded connections
for temperature sensor
Cutting-ring threaded
connection for steam
generator / chamber
Cover seal for
steam generator
Swivelled threaded
connection for the
steam generator
Seite 5 von 5 Rev.-Nr.:98/0 Code01.doc
Fault diagnosis DAC Professional
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09/21/2006 20/61 Servicemanual DAC Professional
FAULT 2: Steam generator
Triggered by:
The following monitoring time limits have been exceeded
• Uet2 for the warming-up phases in the fractionations until reaching P5 (warm start), P39 (cold start),
P43 (cold start disinfection) or
• Uet3 for the heating up to the sterilization / disinfection temperature T1-T5
Causes / Remedy
Operating fault / Checks by personnel:
• Maximum load exceeded
• Mains power voltage too low (check mains installation)
Appliance fault / Repair by technical service personnel
► Control steam generator Output ACOUT1 faulty
Check in "Diagnosis Program":
Switch on ACOUT1, (the LED for this output lights up),
Measure voltage at output ACOUT1
► Capillary control "2nd Overheating protection for the
Steam Generator" is faulty
• Control unit is permanently open
Check for passage when cold
• Control unit switches too soon
During a program, measure the voltage behind the control unit
with a sufficient water level in the steam generator (check level in the
condensate return) the control unit must not switch
► "3rd Overheating protection for the Steam Generator"
fuse blown on the heating coil of the steam generator
(contact broken )
Measure voltage behind fuse, this will usually be due to a fault at the
output ACOUT1 of the control unit and additionally failure of the 2
overheating protection
► Heating Steam Generator faulty
In the Diagnosis Program switch on output ACOUT1, measure voltage
directly at the connectors of the heating coil of the steam generator
(voltage measured but coil remains cold)
► Capillary level control unit faulty
• Control unit does not open on overheating (water shortage).
Water shortage is not recognised and the overheating protection
switch switches off.
Functional test of the capillary level control unit:
In the "Service Program“/ "switch-times" set z24 = 0,
Start Universal Program with full load, by switching capillary control unit
and the resultant feed of distilled/demineralised feed water should
compensate for the water shortage in the steam generator
(observe condensation return to steam generator)
► Pressure sensor-Signal/ Signal processing faulty
• Pressure sensor signal or the signal processing too low
Steam generator heats until security-valve opens)
Fault 2: Steam generato
nd
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09/21/2006 21/61 Servicemanual DAC Professional
Fault 4: Pressure release
FAULT 4: Pressure release
Triggered by : The monitoring time limit Uet5 for the pressure release until reaching P11 has been exceeded.
Causes/ Remedy
Operating fault /Check by personnel:
• Check that the cooling water outlet pipe is free of kinks and has a steady downward gradient
• Check that the water outflow plumbing in the room is not blocked
Appliance fault / Repair by technical service personnel
► Pressure release solenoid valve does not open
• Electrical control system is faulty
- in the "Diagnosis Program“, switch on output ACOUT 7:
the LED for this output lights up
- Measure voltage at ACOUT 7 of control (approx.230V AC)
- Measure voltage at output of the rectifier socket (approx. 200V DC)
- Check coil of solenoid valve is conducting
• Solenoid valve mechanically blocked (clogging)
Open valve casing
► Pressure release filter clogged
Remove stopper. Check filter sieve for clogging, clean/exchange, insert new seal and screw tight.
► Pressure sensor / Analog input AIN 3 measures too high
Even after pressure release, pressure signal still shows > P11. Follow-on faults would usually be "Fault 1
Vacuum system", " Fault 34: Sterilization TU"
Check the pressure displayed in "Diagnosis Program“/ "Analog inputs“ for plausibility, displayed value
must correspond to current atmospheric pressure (door open)
See also under "Fault 34 Sterilization TU“, "Pressure sensor, Analog input AIN 3 measures too high"
Exchange pressure sensor
If fault occurs again exchange CPU-board
Fault Diagnosis DAC Professional
09/21/2006 22/61 Servicemanual DAC Professional
Fault 6: Ventilation
FAULT 6: Ventilation
Triggered by: The monitoring time limit Uet7 for the ventilation of the chamber until reaching pressure P12 was
exceeded
Causes/ Remedy
Operating fault/Check by personnel:
• The sterile filter is dirty, this will the autoclave show with the display “Replace sterile filter”
• As a check, remove the filter and carry out a sterilization cycle with no load. Exchange sterile filter
Appliance fault / Repair by technical service personnel
► Ventilation solenoid valve does not open
• Solenoid valve blocked mechanically (soiling)
Open valve casing, clean or exchange valve
• Control for ventilation solenoid valve faulty, output ACOUT8 giving
permanent signal (relay stuck)
Exchange CPU-board
► Pressure sensor/ Analog input AIN 3 measures too low
• Pressure sensor signal/ Signal processing to control too low, Pressure signal after ventilation still < P12,
follow up fault would normally be “Fault 35: Sterilization TO”
Check that the pressure displayed in “Diagnosis-Program“/ “Analog input“ is plausible, displayed value
should be current air pressure (door open)
See also under “Fault 35 Sterilization TO“ – “Pressure sensor, analog input AIN 3 measures too low“
Exchange pressure sensor
If a fault is still reported: Exchange CPU-board
Parameter P12 wrong
►
In “Service Program“ check that the parameter setting P12 = 800 is correct, if necessary update setting
(particularly for installation at high altitudes).
Error diagnosis DAC Professional
09/21/2006 23/61 Servicemanual DAC Professional
Malfunction 8: Time base
Malfunction 8: Time base
Trigger for the malfunction:
The maximum difference has been exceeded between the duration of a program cycle and the time measured by
the internal CPU clock.
Cause / Correction
Check for cause of problem by operator:
⇒ If problem occurs once or occasionally: Check the power supply of the building for electromagnetic
disturbances (by a technician). If necessary use another power plug and / or use a line filter.
Malfunction in unit – correction by Technical Service staff
Internal error of the hardware
Trigger for the malfunction:
• If problem occurs regularly: The clock in the CPU or on the main board 08-00
⇒ Exchange CPU main board 08-00
is defective.
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09/21/2006 24/61 Servicemanual DAC Professional
FAULT 9: DOOR OPEN
Triggered by: Door contact (digital input DIN1) was closed during a program
Causes/ Remedy
Operating fault/ Checks by personnel:
• Press down door handle as far as possible
Appliance fault / Repair by technical service personnel
► Door switch faulty
• Door switch faulty / needs readjustment
• Electrical connection to CPU-board interrupted
• Digital input DIN1 on CPU-board faulty
Check in the Diagnosis-Program, "Digital Inputs: E 1“
if the door switch needs adjusting, see below.
Adjusting the door contact switch
• In the diagnosis program "Digital Inputs“ select
"Input E1: Door contact“
• Insert 8 mm spacer (M8 bolt or similar) between
lock housing and upper door beam as shown
• Close door and push down door lock until contact is made
• Loosen right fixing screw of door contact switch
• Turn door contact switch around the left fixing
screw until door contact switch engages (Display
shows "closed", switching sound)
• Tighten right adjusting screw in new position
Fault 9: Door open
Fault Diagnosis DAC Professional
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Fault 10: Overheating Steam generato
FAULT 10 : Overheating of Steam Generator
Triggered by:
• The capillary tube controller "Level control“ (digital input DIN2) is already open at the start of the program
(Fault displayed when program is started)
• During the program (through until the end of sterilization), the monitoring time limit Uet18 for resetting the
capillary tube controller “Level control” (by refilling with distilled or demineralized water) has been exceeded.
Causes / Remedy:
Operating fault / Checks by personnel:
• This fault can occur after a program termination and an immediate restart. Wait for two minutes and try to
start again.
Appliance fault / Repair by technical service personnel:
FAULT 10:
OVERHEATING STEAM GENERATOR
Fault immediately at
start of a program
Program start and fault display
immediately after switching
power on (i.e. steam
generator definitely cold)
Capillary control “Level control”
Steam generator (digital input
DIN 2) faulty (contact permanently
open)
⇒ Replace steam generator
*2)
Program start and fault after
power has been on for a
longer period
Steam generator output
ACOUT1 on CPU-board faulty
(permanent voltage signal to
steam generator)
⇒ Replace CPU-board
Fault Diagnosis DAC Professional
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Fault 10: Overheating Steam generato
Fault during the
program
Feed pump stays on pumping noise
yes
Water level in steam
generator rises
(check condensation
return flow pipe)
• Poor heat transfer from heating coil
• Capillary tube level control for the
*1) Until exchange of pump, increase switching times z24, z25 by 3 (s)
*2) Until exchange of steam generator, increase switching times z24, z25 by 3 (s), connect contacts to capillary
steam generator closes too soon
⇒ Replace steam generator
tube controller "Overheating protection"
yes
no
*2)
no
• Control for feed pump/ feed
pump solenoid valve on
CPU-board output ACOUT 5 /
Fuse F3 defective
⇒ F3/ exchange CPU-board
• Feed pump faulty/
• Feed pump solenoid valve
faulty (does not open)
⇒ Exchange feed pump or
solenoid valve for feed pump
• Pressure release solenoid
valve leaking (observe pipe
from valve)
• Vacuum solenoid valve
leaking
⇒ Clean/exchange solenoid
valve
• Feed pump not providing
sufficient power
⇒ exchange Feed pump*
• (Float switch for feed water
(Digital input DIN 4) faulty
(does not close, water
shortage is not recognised))
1)
Fault Diagnosis DAC Professional
09/21/2006 27/61 Servicemanual DAC Professional
Fault 12: Door locking
FAULT 12: Door locking
Triggered by:
• The door locking contact DIN5 is not switched after time period z31 (Door closed when no power supply,
contact DIN5 still open).
Causes / Remedy:
Operating fault / Check by operating personnel :
• Locking bolt sticking or out of alignment
Appliance fault / repair by technical service personnel:
• Control for door locking output ACOUT 10
on CPU-board is faulty (permanent voltage)
• Contact switch on door lock is faulty
• Locking bolt cannot move freely / is blocked
Adjusting the door lock
• Dismantle door cladding, close door
• Loosen fixing screws on the door lock
• By shifting the door lock centralise the face of the
locking bolt in the depression as shown, with a
spacing of approx. 2 mm
• Tighten fixing screws on the door lock
Door lock will not disengage
The Display permanently shows "Please wait - Door unlocking" after switching power on or after a program has
ended (no explicit malfunction reported ):
• Control "Door locking" Output ACOUT 10 on CPU-board is faulty
• Drive for the door locking is faulty
• Door contact switch of the door lock is faulty
• Locking bolt cannot move freely / is blocked
In the Diagnosis Program switch on output ACOUT10, functional control power output and locking
Unlock door manually (for example with the help of a screwdriver).
ca.2mm
Fault diagnosis for DAC Professional
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Fault 14: No feed wate
Fault 14: No feed water (or Warning message: No feed water)
Trigger for the error:
In addition to the monitoring action by the flow sensor 41-00 during a cycle (internal error 14) the float switch in the
internal feed water tank 04-01
feed water). This is only possible with models with internal feed-water supply from an internal water tank.
The cause, the occurrence, and the time in point of the error message will vary, and will depend on the following
factors:
can trigger the error message before starting the program (Warning message: No
Models without an internal tank or models with an internal tank but with an external supply of feed water
This possibility of feed-water supply is found in Vacuklav
Vacuklav
water storage tank 04-00
The flow sensor 41-00
not switched (i.e., has not closed) after the waiting period z22 has run out for water feed before conductivity
measurement. Or, this sensor has not switched (i.e., has not closed) after waiting period z16 has run out for water
feed during the program run.
In both cases, the malfunction 14 will appear not before a few seconds after the program starts, or during the
program run. In the display, the two following warnings will alternate: “Warning! Water supply” or “Malfunction 14:
No feed water”, and “ aqua dest. / dem. check supply ”.
Models with internal tank and internal feed of water
This possibility of feed-water supply is pre-set as default at the factory for the models Vacuklav
Vacuklav
The float switch for demineralized water (04-01
has reported that there is a shortage of water (i.e., the switch is open).
In this case, the error message will occur directly when the power supply on the unit is switched on, or directly at
the start of a program, or at the end of this program – but never during the run of the program itself. The display
will alternate between “Warning! Water supply” and “aqua dest./dem. refill! ”.
Or:
The flow sensor 41-00
has not closed) after the waiting period z22 has run out for water feed before conductivity measurement. Or, this
sensor has not switched (i.e., has not closed) after waiting period z16 has run out for water feed during the
program run.
In this case, the error message will appear a few seconds after the start of the program and after the observation
time, or during the program run. In the display, the two following warnings will alternate: “Warning! Water supply”
and “aqua dest. / dem. check supply”.
®
23-B and Vacuklav®31-B, and for all Euroklav®- models if they take the feed water not from the internal
(e.g. a MELAdem® water treatment device is installed).
for the supply of distilled or demineralized water at digital input DIN 4 on the main board has
®
31-B, and for all Euroklav® models.
) on the feed-water side of the internal water storage tank (04-00)
for the supply of distilled or demineralized water at digital input DIN 4 has not switched (i.e.,
®
24-B and Vacuklav®30-B. It is optional for the
®
23-B and
:
Fault diagnosis for DAC Professional
09/21/2006 29/61 Servicemanual DAC Professional
Fault 14: No feed water
Malfunction in unit – correction by Technical Service staff
Models without an internal tank, or models with an internal tank but with an external supply of feed water:
⇒ For supply of feed water to the autoclave from a water-treatment system (for example, MELAdem
®
MELAdem
• Make sure that there are no kinks (twists or curls) in the water-supply hose.
• Check the function of the system: pre-compression in the storage tank of MELAdem
rate, the filter.
47):
®
47, the water supply
®
37,
⇒ For supply of feed water to the autoclave by suction from a water-storage tank:
• Check the filling level of the external water-storage tank.
• Check the position of the suction filter on the bottom of the water storage tank.
• Make sure that there are no kinks (twists or curls) in the water-supply hose.
• Check to make sure that the suction level is not too low. The maximum suction level for intake from the
water tank is 1.5 m.
Models with internal tank and internal feed of water
⇒ Make sure that there is enough distilled or demineralized water in the right half of the internal tank (04-00).
Also see the Operating Manual.
⇒ Check to make sure that the float of the float switch for demineralized water (04-01) in the right half of the
internal tank (04-00
) can move freely without obstruction (Please check by hand).
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Malfunction in unit – correction by Technical Service staff
---------------------
aqua dest. / dem.
---------------------
Can you hear the feed pump when
WARNING!
Water supply
Check supply
(Malfunction 14)
the program starts?
yes
⇒ Solenoid valve 33-02 of the feed-water dosing unit does not open.
• Clean the solenoid valve (plunger) and check the coil, or replace the feed-water dosing unit 33-00
⇒ The nozzle (flow limiter) 33-03 of the feed-water dosing unit 33-00 is clogged.
• Clean the dirty nozzle, or replace the feed-water dosing unit 33-00
Only a
quiet hum
no
WARNING!
Water supply
--------------------aqua dest. / dem.
refill!
---------------------
(Warning message)
⇒ Check the activation control for the feed-water
pump and the valve 33-00
• Switch on “A5: Pump/SV aqua dem” in the digital
outputs of the Diagnosis Program
• Check the electrical activation control (the LED
assigned to the output will light up), fuse F3
the switching behaviour of the pump and the
valve.
• If necessary, measure the voltage again at
AC OUT 5
the pump and valve (approx. 230 V AC).
• If necessary, replace a defective feed-water
dosing unit 33-00
of the main circuit board 08-00, and for
-
through AC OUT 5:
.
, or replace the main circuit
.
, and
Fault diagnosis fo
Fault 14: No feed wate
⇒ Check the float switch for demineralized water
) at DIN 6:
(04-01
• Check “E6: Aqua dem, swimmer” in the digital
inputs of the Diagnosis Program
• Lift the float of the switch Î display “closed”
(enough water)
• Press down the float of the switch Î display
“open” (not enough water)
• If necessary, replace the float switches. Or turn
them 180° if they have been incorrectly installed.
Or, repair the cable connection.
.
⇒ Check the signal processing at DIN 6 of the
main circuit board 08-00
• Check “E6: Aqua dem, swimmer” in the digital
inputs of the Diagnosis Program
• Pull out the plug of the digital inputs on the main
circuit board 08-00
• If defective, replace the main circuit board 08-
00.
.
:
.
, and directly jumper DIN 6.
#3/4
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⇒ The amount of water supplied by the feed-water dosing unit 33-00 is not enough; test as follows:
• Place the end of the feed-water hose 41-00-A
• Switch on “A5: Pump/SV feed pump” (AC OUT 5
• Check the feed rate for the water: it must be 1 … 1.5 l/min.
• If necessary, replace the defective feed-water pump including the solenoid valve 33-00
⇒ Test the signal processing at DIN 4 of the main circuit board 08-00, and check the cable connection to the flow sensor 41-00 as follows:
• Check display “E4: Aqua dem, current” in the digital outputs of the Diagnosis Program
• First disconnect both of the plugs of the reed contact 41-00-B
necessary, pull out the plug of the digital inputs on the main circuit board 08-00
“open” or “closed”.
• If it is defective, replace the main circuit board 08-00
⇒ The flow sensor 41-00 at DIN 4 is either defective, or not adjusted properly:
• If the switching point is not correctly set, see the Adjustment Instructions
• The switching piston with magnet (41-02
• The reed contact may be defective (41-01
• Adjust the flow sensor 41-00
if necessary. If required, repair it or replace it.
(behind the flow monitor) into a measuring beaker.
) in the digital outputs of the Diagnosis Program.
.
.
, and then make a short-circuit by placing a jumper at the digital output. Then, if
, and directly jumper DIN 4. Observe whether the display is
. Repair the cable connection is required.
.
) may be jammed.
)
Fault diagnosis fo
Fault 14:
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Fault 18: Sensor "nr" Input "nr"
FAULT 18: Sensor "nr" Input "nr"
Triggered by:
• The internal check of the sensors for temperature, pressure, or conductivity showed too large deviations. Such
malfunction reports can occur immediately when the appliance is switched on or while a program is running.
Causes / Remedy
Operating fault / Checks by personnel:
For "Fault 18 Sensor: 6 Input 6" (conductivity sensor is faulty), check first that if demineralised or distilled water is
supplied from a container that this has not accidentally been filled with something else.
Appliance fault/ Repair by technical service personnel
Overview of sensors / analog inputs
Sensor
No.
1 AIN1 PT 1000
2 AIN2 PT 1000
3 AIN3 Pressure
4 AIN4 PT 1000
6 AIN6 Water
Input
No.
Sensorcharacteristic
Class A
Class A
sensor
0 - 10V at
0 - 4000mbar
Class A
conductivity
sensor
Temperature sensor preheating, AIN4
Sensor designation/
-function
"Temp_chambr_elec“
Temperature sensor
"Steam" for program
control
"Temp_Chambr_Dis1/2“
Temperature sensor
"Steam" for
display/record and
monitoring
"Pressure chamber“
Pressure sensor for
program control Display,
record and monitoring
"Temp_preht_chamb“
Temperature sensor for
control of chamber
temperature
"Conductivity“ display/
monitoring elec.
conductivity
Conductivity sensor, AIN6
Signal +
Signal -
Ub+ =24V
Pressure sensor AIN 3
Temperature sensors Steam AIN1/AIN2
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Fault 18: Sensor "nr" Input "nr"
Display message Triggered by/Cause Correction Comments / Remarks
Fault18
Sensor: 1 Input 1
Fault18
Sensor: 2 Input 2
Fault18
Sensor: 3 Input 3
Fault18
Sensor: 4 Input 4
Fault18
Sensor: 6 Input 6
Temperature at analog input
AIN1 ≤ 0°C or ≥ T23
• Temperature sensor faulty
Short-circuit/Open
• Signal processing on CPUboard faulty
Temperature measured at
analog input
AIN2 ≤ 0°C or ≥ T23
• Temperature sensor faulty
Short-circuit/Open
• Signal processing on CPUboard faulty
Pressure measured to analog
input AIN3 ≤ 0 mbar or ≥ P19
• Pressure sensor faulty
• Signal processing to CPU-
board faulty
• + 24V (voltage to pressure
sensor) at CPU-board faulty
Temperature measured at
analog input AIN4
≤ 0°C or ≥ T23
• Temperature sensor faulty
Short-circuit/Open
• Signal processing on CPUboard faulty
Conductivity measured at
analog input AIN6 ≥ L3
• Exchange
temperature
sensor
• Exchange CPUboard
• Exchange
temperature
sensor
• Exchange CPUboard
• Exchange
pressure sensor
• Exchange CPUboard
• Exchange
temperature
sensor
• Exchange CPUboard
• Check for shortcircuits of the
conductivity
sensor
• Exchange CPUboard
Until the sensor/CPU-board can be
exchanged, in the Service-program
set FLAG F28 to 1, AIN 2 then
takes over the function of
AIN 1
Until the exchange of the
sensor/CPU-board, unplug the
defective sensor on input AIN2,
move the sensor on AIN1 to AIN2
and in the Service-Program set
F28 to 1
Sequence of testing:
+24V supply (between GND and
+UB) measured at pressure
sensor
Signal voltage at pressure sensor
between GND and + Signal must
be around 2.5V (corresponds
1000mbar air pressure)
Until exchange of the sensor/CPUboard, in the Service program set
FLAG F5 to 0, this deactivates the
entire preheating including
malfunction reports - drying quality
will be reduced
Until exchange of the CPU-board,
in the Service program set FLAG
F3 to 0, this deactivates the entire
conductivity measurement
including malfunction reports temporarily no automatic checks of
water quality ,
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Fault 21: Preheating
FAULT 21 Preheating
Triggered by:
The monitoring time limit Uet11-Uet16 from switching on the preheating until reaching the necessary temperature
has been exceeded
Causes/ Remedy
Operating fault/Checks by personnel:
• Mains electricity voltage too low: Check mains supply installations
• Appliance is cold, door not closed properly during preheating
Appliance fault / Repair by technical service personnel
► Control unit Preheating Output ACOUT2 is faulty
Check in "Diagnosis-Program":
Switch on output ACOUT 2, (the LED for this output lights up),
Measure voltage at output ACOUT2
► Overheating-protection Preheating faulty
• Control unit permanently open
• Control unit switches too soon, and stops heating power:
Measure voltage behind the control unit during the program
► Preheating faulty
In the "diagnosis program" switch on output ACOUT2, measure voltage directly at the connection to the
preheating (voltage but heating remains cold), or check current through heating
Until a repair is possible, as a temporary measure set the FLAGS F5=0 to deactivate the preheating and
the associated malfunction report.
Fault diagnosis DAC Professional
09/21/2006 35/61 Servicemanual DAC Professional
Fault 22: Overheating preheating
FAULT 22: Overheating of preheating
Triggered by:
The limit value for the preheating-temperature T10 was exceeded
Causes / Remedy
Operating faults / Checks by personnel:
Appliance fault / Repair by technical service personnel
► Control of Pre-heating Output ACOUT2 faulty
At output ACOUT2 there is a permanent voltage (although LED off), i.e. semiconductor relay faulty,
exchange CPU board
► Temperature sensor Pre-heating faulty
Temp.-sensor Preheating measurements too high/fluctuating, in the " Diagnosis Program" check the
analog input AIN4 during a program by pressing the button " - ".
Exchange temperature sensor
► Signal processing at analog input AIN4 faulty
Exchange CPU-board
Until a repair, it is possible to temporarily deactivate the preheating and the malfunction message by
setting the FLAG F5=0, and in addition if the output ACOUT2 is defective, disconnect the contacts to the
pre-heating from the output.
Temp.-sensor "Preheating" AIN4
Under the chamber insulation, stuck
directly on the heating
Fault Diagnosis DAC Professional
09/21/2006 36/61 Servicemanual DAC Professional
Fault 26: A/D-Converting
FAULT 26: A/D-converter
Triggered by:
The maximum permissible deviation for the signal processing in the CPU (A/D-conversion) was exceeded
Causes/ Remedy
Operating faulty/Checks by operating personnel:
Appliance fault / Repair by technical service personnel
► Hardware signal processing fault
Exchange CPU-board
Fault-diagnosis DAC Professional
09/21/2006 37/61 Servicemanual DAC Professional
FAULT 27 Temp.Sens.def 1,2
Triggered by :
The maximum permissible deviation D3 (value x 0.1 in °C) between the two temperature sensors "
"Temp_chambr_elec" on AIN1 and "Temp_chamber_Dis1/2“ on AIN2 was exceeded.
Causes/ Remedy
Operating fault / Check by the personnel:
Appliance fault / Repair by technical service personnel
► Temperature sensor AIN 1 or AIN 2/ Signal processing on AIN1 or AIN2 faulty
Clarification with the help of the print-out record
If at the time of the malfunction the temperature and pressure values of the print-out correspond to values
for saturated steam, then it can be assumed that the temperature measurement at AIN2 is accurate. The
cause of the malfunction is therefore probably a faulty temperature measurement at Analog input AIN 1:
• Temperature sensor "Temp_chambr_elec“ at AIN1 faulty
• Fault in signal processing at AIN1 (AD-converter on CPU board).
Exchange temperature sensors on AIN1 and AIN2 and restart the program,
If the temperature and pressure values on the print-out at the time of the malfunction correspond
to the values for saturated steam then it can be assumed that the temperature sensor from AIN 1
(now in Analog input AIN2) is measuring properly, so that the malfunction is due to the faulty
signal processing on the AIN 1: exchange CPU-board.
If there is a deviation from the values for saturated steam, then the fault lies in the temperature
sensor originally in AIN1 (now in AIN2): exchange this sensor.
However, if the print-out shows a deviation from the values of pressure and temperature for saturated
steam, then the fault lies with the temperature measurements from the analog input AIN2:
• Temperature sensor "
• Faulty signal processing at AIN2 (AD-converter on the CPU-board)
Exchange temperature sensor on AIN2 with AIN1 and start the program,
If the temperature and pressure values now correspond to the values for saturated steam, then
the temperature sensor originally at AIN2 (now in AIN 1) is faulty: exchange the relevant sensor
If there is still a deviation of temperature and pressure values in the print-out from the values for
saturated steam, then it can be assumed that sensor originally at AIN 2 (now in Analog Input AIN
1) did not give an incorrect temperature measurement, so that the fault lies in the incorrect signal
processing at AIN 2: Exchange CPU-board.
Temp_chambr_elec“ at AIN2 faulty
Fault 27: temp. Sens.def 1,2
AIN1
AIN2
Fault-diagnosis DAC Professional
09/21/2006 38/61 Servicemanual DAC Professional
Fault 29: Battery RAM
FAULT 29: Battery RAM
Triggered by:
In the data memory of the CPU there is a data inconsistency or a loss of data, This can be due to an electrical
disturbance (e.g. very high power supply disturbances), a low battery voltage or a hardware defect in the RAM. On
quitting the fault the clock time is automatically set at 00:00 and the load counter is reset to the value from the
EEPROM. At the same time all record data in the memory is deleted.
Causes / Remedy
Operating fault / Checks by personnel:
• After quitting the malfunction report: Enter correct time and date settings and restart a program.
Appliance fault / Repair by technical service personnel
► Battery voltage too low
• If fault occurs regularly exchange battery on CPU- board (battery connections soldered)
► Fault in RAM
• If after exchanging the battery there is still a malfunction report, then there is a permanent fault in the
RAM - replace the CPU board
Fault diagnosis DAC Professional
09/21/2006 39/61 Servicemanual DAC Professional
FAULT 31: System leak
Triggered by :
During the "Vacuum test" program the evacuation pressure exceeded the maximum permitted value P13 (very
large leak ):
Causes / Remedy
Operating fault / Checks by personnel :
• Examine the door seal and seal contact surfaces at the chamber and the door for signs of damage or soiling,
and if necessary clean.
Appliance fault / Repair by technical service personnel
► Leaks at the solenoid valves
► Solenoid valve for ventilation does not close/leaks
• Coil, rectifier plug, control unit ACOUT 8 faulty
• Solenoid valve soiled (plunger/ contact surface)
Test at reduced pressure (Program "Vacuum test“):
Remove sterile filter, cover opening with flat of hand,
observe pressure display
► Solenoid valve for pressure release leaking
• Solenoid valve soiled (plunger/ contact surface)
Test at reduced pressure (Program "Vacuum test“):
Observe water column in pipe between pressure release solenoid
valve and sterile filter, if there are leaks the water will be drawn
towards the solenoid valve
Disconnect pipe from T-junction for cooling water and close with finger,
Observe pressure display
► Vacuum solenoid valve leaking (Program "Vacuum test“):
• Solenoid valve soiled (plunger/ contact surface)
Test at reduced pressure (Program "Vacuum test“):
Observe pipe between chamber and vacuum solenoid valve,
if there are leaks water will be drawn towards chamber
► Solenoid valve for feed pump leaking
• Solenoid valve soiled (plunger/ contact surface)
Test at reduced pressure (Program "Vacuum test“):
Observe feed water intake pipe between conductivity
measurement cell and intake connection of pump and on the
outlet side of pump, if there are leaks the water will be drawn in
the direction of the autoclave chamber
Fault 31: System leak
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► Leaks at screwed and bonded connections
Test at elevated pressure: Start "Diagnosis Program“/ "Leak search“ (0.3 bar, 8 min) or provide
compressed air (maximum 2bar) through the ventilation air connection, closing output ACOUT8
"Ventilation solenoid valve" in the "Diagnosis Program", paint soap solution at the appropriate points, for
example .:
bonded pipe connections
at autoclave chamber
Stopper of pressure
release filter
Fault diagnosis DAC Professional
Fault 31: System leak
Screw-connections
temperature sensor
Cutting-ring screw
connection steam
generator /chamber
Cover gasket,
steam generator
Screwed swivel
connection,
steam generator
Bonded T-connector
in pressure release
Fault-diagnosis DAC Professional
r
09/21/2006 41/61 Servicemanual DAC Professional
Fault 32: Power loss/Sterilize sterile-filte
FAULT 32: Power loss / Sterilize sterile filter
Triggered by :
After the start of a program there is a loss of the power supply. The fault is reported as soon as the electric power
supply is resumed:
If there has been a power loss then on restarting, there will be a reminder on the display to sterilize the sterile filter,
since this may have been damp and be contaminated with pathogens:
Remove sterile filter on the rear side of the autoclave
Sterilize the filter in the quick program
After completion of the program replace the sterilized filter
Causes/ Remedy
Operating fault/Check by personnel:
• Manual program termination by switching off the autoclave from the mains supply
• Check for mains power cut, and intact electrical supply installations
Appliance fault / Repair by technical service personnel
• Power switch faulty
• Main fuses F1, F2 (on front of autoclave beneath power switch) is faulty
• Check internal wiring of the autoclave (in particular power supply to the CPU board)
• Power supply on the CPU board is faulty
Fault Diagnosis DAC Professional
09/21/2006 42/61 Servicemanual DAC Professional
Fault 33: Pressure loss
FAULT 33: Pressure loss
Triggered by :
The maximum time Uet10 below the threshold pressure (corresponds to the maximum operating time of the steam
generator to reach the operating pressure) has been exceeded.
Causes/ Remedy
Operating fault/Checks by operating personnel:
Appliance fault / Repair by technical service personnel:
► Security-valve leaking
Security-valve opens too soon, steam generator is able to compensate
for loss
Steam escaping from security-valve at back of autoclave
► Vacuum solenoid valve leaking
Leak of vacuum solenoid valve, steam generator able to
compensate for loss
Steam flow visible in pipe from chamber to
vacuum solenoid valve
Fault Diagnosis DAC Professional
09/21/2006 43/61 Servicemanual DAC Professional
Fault 34: Sterilization TU
FAULT 34: Sterilization TU
Triggered by:
Temperature fell below the minimum level for the sterilization/disinfection during the period T1-T5 (measured at the
temperature sensor "Temp_chambr_elec“ at AIN1).
Cause / Remedy
Operating fault / Checks by personnel:
• Load exceeds maximum level allowed
Appliance fault / Repair by technical service
► No saturated steam pressure / Leaking
As a result of too much residual air in the autoclave chamber, the temperature is not high enough to allow
the generation of saturated steam.
Check using the print-out records:
Control pressure in record corresponds to control pressures P 6 – P10
Reading in record from temperature sensor "Temp_Chamber_Dis1/2" at Analog input AIN2 is also too low
(corresponds to the temperature of temperature sensor "Temp_chambr_elec" at analog input AIN1 (see
last line of record print-out.)
Carry out a vacuum test - if there is no leaking see under "Pressure sensor signal too high"
► Temperature sensor "Temp_Kess_Prog"/ Analog input AIN1 measures too low
Check using the record print-out:
Print-out reading for control pressure corresponds to control pressures P 6 – P10
Print-out reading for temperature sensor "Temp_Chamber_Dis1/2“ at analog input corresponds with the
pressure required for saturated steam.
In order to determine whether the fault lies in the temperature sensor or the signal processing on the CPUboard, proceed as follows:
Switch temperature sensors AIN1 and AIN2 and start the program again,
• Program runs without
disturbance, (or with "Fault 27“ )
• Temperature on print-out too low
to produce saturated steam?
Exchange temperature
sensor now on AIN2
(previously on AIN 1)
• Fault 34 again
• Does temperature reading on
print-out correspond with the
pressure to produce saturated
steam?
Signal processing on CPUboard faulty,
Exchange CPU-board
Fault Diagnosis DAC Professional
09/21/2006 44/61 Servicemanual DAC Professional
Fault 34: Sterilization TU
► Pressure sensor / Analog input AIN 3 measures too high
If the checks show there is no leak (Vacuum test), check through the following on the program print-out:
Pressure reading on print-out corresponds to the control pressures P 6 – P10
Print-out readings from temperature sensor "Temp_chambr_elec“ (AIN1) and from temperature sensor
"Temp_Chamber_Dis1/2“ (AIN2) correspond to one another, but both are too low to produce saturated
stream.
• Exchange pressure sensor
• If there is still a fault, exchange the CPU-board
► "Overheating protection - Steam generator" engages
• Capillary tube level control (digital input DIN 2) is faulty
Control does not open on overheating (shortage of water), water shortage is therefore not recognised and
the capillary tube overheating control switches off.
(see also "Fault 2 Steam generator“)
Observe level regulation in the condensation return pipe, exchange steam generator
• Capillary tube overheating control is faulty.
Control switches too soon, exchange steam generator
Observe level regulation in the condensation return pipe, exchange steam generator
► "Poor control response of steam generator"
Poor heat transmission from the heating coil of the steam generator, particularly temperature fluctuations on
transition from warming-up phase to sterilization phase can take the temperature below the sterilization
temperature for brief periods
Exchange steam generator
09/21/2006 45/61 Servicemanual DAC Professional
Fault diagnosis using the program print-out
FAULT 34: Sterilization TU
Fault Diagnosis DAC Professional
Fault 34: Sterilization TU
The control pressure reading on the printout at the time of the fault corresponds to
the rated values P6 – P10
The temperature of temperature sensor
"Temp_Chambr_Dis1/2“ (Analog input
AIN2) corresponds to that of
temperature sensor
"Temp_chambr_elec“ (analog input
AIN1), but both temperatures are well
below the theoretical value needed for
saturated steam.
The control pressure reading on the print-out
at the time of the fault is lower than the rated
values P6 – P10
The overheating protection of the steam
generator switches off
• The capillary tube level regulator DIN 2
does not switch / switches too late (water
shortage not recognised)
• The capillary control "Overheating
protection" switches too soon.
Exchange steam generator
The temperature of temperature sensor
"Temp_Chambr_Dis1/2“ (analog input
AIN2) corresponds to the theoretical
saturated steam pressure, i.e. only the
temperature from the temperature sensor
"Temp_chambr_elec“ (analog input AIN1)
lies below the theoretical value needed for
saturated steam.
Leaking, no saturated
steam (do vacuum test)
Pressure sensor signal faulty, too
high
• Pressure sensor faulty
• Signal processing on CPU-
board faulty
Exchange pressure sensor /
CPU-board
• Program runs without
disturbances,
(possibly "Fault 27") ?
• Temperature on print-out too low
for saturated steam?
Exchange temperature
sensor now on AIN2 (was
previously on AIN 1)
Temperature signal from analog input
AIN 1 faulty
Change temperature sensors on AIN1
and AIN2 and restart program
• Fault 34 again?
• Does temperature on print-
out correspond with
pressure to generate
saturated steam?
Signal processing on CPUboard faulty,
Exchange CPU-board
Fault-diagnosis DAC Professional
09/21/2006 46/61 Servicemanual DAC Professional
FAULT 35: Sterilization TO
Triggered by:
The maximum temperature (T1-T5)+D5 for the sterilization / disinfection during the period T1-T5 (measured by the
temperature sensor "Temp_chambr_elec“ at AIN1) has been exceeded
Cause / Remedy
Operating fault / Checks by personnel:
Appliance fault / Repair by technical service
► Temperature sensor "Temp_Kess_Prog"/ Analog input AIN1 measures too high
Check using the record print-out:
Print-out reading for control pressure corresponds to control pressures P 6 – P10
Print-out reading for temperature sensor "Temp_Chambr_Dis1/2“ at analog input corresponds with the
pressure required for saturated steam.
In order to determine whether the fault lies in the temperature sensor or the signal processing on the CPUboard, proceed as follows:
Switch temperature sensors AIN1 and AIN2 and start the program again,
• Program runs without
disturbance, (or with "Fault 27“ )
• Temperature on print-out too high
to produce saturated steam?
Exchange temperature sensor now
on AIN2 (previously on AIN 1)
► Pressure sensor / Analog input AIN 3 measures too low
Check using the program print-out records:
Pressure reading on print-out corresponds to the control pressures P 6 – P10
Print-out readings from temperature sensor "Temp_chambr_elec“ (AIN1) and from temperature sensor
"Temp_Chambr_Dis1/2“ (AIN2) correspond to one another, but both are too high to produce saturated
stream
• Exchange pressure sensor
• If there is still a fault, exchange the CPU-board
► Control for steam generator output ACOUT1 faulty
Check using the program print-out records / test voltage at output ACOUT1:
In comparison with the control pressures P 6 – P10 pressure reading on print-out are too high
Pressure reading on print-out corresponds to the control pressures P 6 – P10
Print-out readings from temperature sensor "Temp_chambr_elec“ (AIN1) and from temperature sensor
"Temp_Chambr_Dis1/2“ (AIN2) correspond to one another, but both are too high to produce saturated
stream
Voltage at ACOUT1 does not switch off during the control process:
• Check heat transition semi-conductor relay ACOUT1 to cooling body
• Exchange the CPU board
• Fault 35 again
Does temperature reading on printout correspond with the pressure to
produce saturated steam?
Signal processing on CPUboard faulty,
Exchange CPU-board
Fault 35: Sterilization TO
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Fault diagnosis using the program print-out
FAULT 35 Sterilization TO
Fault-diagnosis DAC Professional
Fault 35: Sterilization TO
The control pressure reading on the printout at the time of the fault corresponds to
the rated values P6 – P10
The temperature of temperature sensor
"Temp_Chambr_Dis1/2“ (Analog input
AIN2) corresponds to that of
temperature sensor
"Temp_chambr_elec“ (analog input
AIN1), but both temperatures are well
above the theoretical value needed for
saturated steam.
The control pressure reading on the print-out
at the time of the fault is markedly higher than
the rated values P6 – P10
Signal to the steam generator Output
ACOUT1 is faulty / does not switch off
• Check heat transfer semiconductor relay ACOUT1 to
cooling body
• Exchange CPU-board
The temperature of temperature sensor
"Temp_Chambr_Dis1/2“ (analog input AIN2)
corresponds to the theoretical saturated
steam pressure, i.e. only the temperature
from the temperature sensor
"Temp_chambr_elec“ (analog input AIN1)
lies above the theoretical value needed for
saturated steam.
Pressure sensor signal faulty, too low
• Pressure sensor faulty
• Signal processing on CPU-board
faulty
Exchange pressure sensor/ CPU-
board
• Program runs without
disturbances,
(possibly "Fault 27") ?
• Temperature on print-out too
high for saturated steam?
Exchange temperature sensor
now on AIN2 (was previously on
AIN 1)
Temperature signal from analog input AIN 1
faulty
Switch temperature sensors AIN1 and AIN2
and restart program
• Fault 35 again?
• Does temperature on print-out
correspond with pressure to
generate saturated steam?
Signal processing on CPUboard faulty,
Exchange CPU-board
Fault-diagnosis DAC Professional
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FAULT 36: Sterilization PU
Triggered by:
The calculated temperature required to produce saturated steam on the basis of the measured pressure is below
the minimum temperatures T1 to T5
Causes / Remedy
Operating fault/Checks by personnel:
• maximum load exceeded
Appliance fault / Repair by technical service personnel
► Pressure drop during the sterilisation phase
• Leaks
Ventilation or Pressure release solenoid valves, spring-operated safety valve
• "Overheating protection - steam generator" trips
The capillary control unit "Overheating protection - steam generator" interrupts the heating power during
the sterilization phase
• Capillary tube level controller (digital input DIN 2) faulty
Controller does not open in the event of overheating (Water shortage), water shortage is therefore
not recognised and the capillary tube controller for overheating protection switches off.
(see also "Fault 2 Steam generator")
Observe level control in condensation return pipe, Exchange steam generator
• Capillary Overheating protection control for Steam generator faulty
Controller switches too early - Exchange steam generator
Observe level control in condensation return pipe, Exchange steam generator.
► Pressure sensor signal fluctuates
Check on the basis of the print-out records:
Print-out shows fluctuating pressure values, dipping below P 6 – P10
In the print-out, the values from the temperature sensor "Temp_chambr_elec " (AIN1) and from
temperature sensor "Temp_Chambr_Dis1/2" (AIN2) correspond.
pressure sensor: white = Signal, green= grd, brown = 24 VDC
signal voltage at 1 bar = 2.5 V DC, max. 10 V DC at 4bar
• Exchange pressure signal
• If malfunction report continues: Exchange printed circuit board
► "Poor control behaviour of steam generator"
Poor heat transfer from the heating coil of the steam generator, in particular during the fluctuation on transition
from heating up to the sterilization phase it is possible that the temperature falls below the theoretical
temperature required for sterilization for short periods.
Increase settings for P6-P10, Z24 and Z25,
Exchange steam generator
Fault 36: Sterilization PU
Fault-diagnosis DAC Professional
09/21/2006 49/61 Servicemanual DAC Professional
FAULT 37: Sterilization PO
Triggered by:
The measured pressure gives a calculated value for the temperature required for saturated steam that lies above
the maximum temperature (T1-T5) + D5 for the sterilization / disinfection during the period T1-T5
Causes / Remedy
Operating fault / Checks by personnel:
Appliance faults / Repair by technical service personnel
► Control of Steam Generator Output ACOUT1 faulty
Check the control on the basis of the program print-out records/ Check voltage at output ACOUT1:
Print-out pressure readings too high in comparison with pressures P 6 – P10
Print-out reading for temperature sensor "Temp_Kess_Prog“ (AIN1) and for temperature sensor
"Temp_Chambr_Dis1/2“ (AIN2) correspond to one another, but both are too high for the generation of
saturated steam
Voltage at ACOUT1 does not switch off during the regulation:
• Check thermal transition semiconductor relay ACOUT1 to the cooling body
• Exchange CPU-board
► Pressure sensor signal fluctuates
Check using the record print-out:
Pressure values show fluctuations, peaks above the relevant pressures P 6 – P10
Recorded temperatures from temperature sensor "Temp_chambr_elec" (AIN1) and from temperature
sensor "Temp_Chambr_Dis1/2“ (AIN2) correspond to one another
• Exchange pressure sensor
• If there are further malfunction reports exchange CPU-board
► "Poor regulatory behaviour of steam generator"
Poor heat transition from the heating coil of the steam generator, particularly in the transition from the heating
up phase to the sterilization phase it is possible that the temperature will exceed the theoretical sterilization
temperature for short periods
Lower P6-P10 and increase D5
Exchange steam generator
Fault 37: Sterilization PO
Fault-diagnosis DAC Professional
09/21/2006 50/61 Servicemanual DAC Professional
FAULT 38: Sterilisation TD
Triggered by:
The maximum permissible difference D6 between the temperature value to generate saturated steam calculated on
the basis of the measured pressure and the value measured by the temperature sensor "Temp_chambr_elec“ at
AIN1 during the period T1-T5 was exceeded.
Cause / Remedy
Operating fault / Checks by personnel:
Overheating, in particular in the case of textile loads soiled with chemicals
Appliance fault / Repair by technical service
► No saturated steam pressure / Leaking
As a result of too much residual air in the autoclave chamber, the temperature is not high enough to allow
the generation of saturated steam.
Check using the print-out records:
Control pressure in record corresponds to control pressures P 6 – P10
Reading in record from temperature sensor "Temp_Chambr_Dis1/2" at Analog input AIN2 is also too low
(corresponds to the temperature of temperature sensor "Temp_chambr_elec" at analog input AIN1 (see
last line of record print-out.)
Carry out a vacuum test
► Temperature sensor "Temp_Chambr_elec"/ Analog input AIN1 fehlerhaft
Check using the record print-out:
Print-out reading for control pressure corresponds to control pressures P 6 – P10
Print-out reading for temperature sensor "Temp_Chambr_Dis1/2“ at analog input corresponds with the
pressure required for saturated steam.
In order to determine whether the fault lies in the temperature sensor or the signal processing on the CPUboard, proceed as follows:
Change temperature sensors on AIN1 and AIN2 and start the program again
• Program runs without
• Temperature on print-out
disturbance, (or with "Fault 27“ )
deviates from that needed to
produce saturated steam?
Exchange temperature sensor
now on AIN2 (was on AIN 1)
► Pressure sensor / Analog input AIN 3 measures incorrectly
If the checks show there is no leak (Vacuum test), check through the following on the program print-out::
Pressure reading on print-out corresponds to the control pressures P 6 – P10
Print-out readings from temperature sensor "Temp_Chambr_elec“ (AIN1) and from temperature sensor
"Temp_Chambr_Dis1/2“ (AIN2) correspond to one another, but both are too low or too high to produce
saturated stream
• Exchange pressure sensor
• If there is still a fault, exchange the CPU board
• Fault 38 again
• Temperature reading on print-
out corresponds with the
pressure to produce saturated
steam
Signal processing on CPU-board
faulty,
Exchange CPU-board
Fault 38: Sterilization TD
Fault diagnosis DAC Professional
09/21/2006 51/61 Servicemanual DAC Professional
Fault 48: Parameters
Fault 48: Parameters
Trigger for the malfunction:
If a sterilization program has been started the CPU checks, if the parameters stored in the electronic board will
guarantee a successful sterilization cycle.
If not (e.g. the time for sterilization at 134°C is less than 180 seconds or less than 900 seconds for 121°C), the
"Fault 48: Parameters" will be shown on the display.
Cause / Correction
Check for cause of problem by operator:
⇒ Acknowledge the malfunction and select and start a different program.
Malfunction in unit – correction by Technical Service staff:
Wrong parameters for sterilization
Cause for malfunction:
• Wrong parameters have been entered into the CPU of the main board.
⇒ Check the pressures, temperatures and times for sterilization-cycles (P6...P10, T1...T5, t1...t5) in the
"Service-Program
EEPROM").
" and correct the wrong parameters or retrieve the saved parameters ("copy to
09/21/2006 52/61 Servicemanual DAC Professional
Reasons for Drying Problems DAC Professional
Operators fault Faults on the autoclave
unperforated trays/Container The Vacuumpump is insufficient (Check the Sterilisation Reports, Evacuation time
DAC Professional ca.2min...3,5 min.
Bad load: flat layed pouches/packs
better: staple like files/up standing
Load Basic for Autoclaves:„Condensate must flow away from the load“
Blockage of the back chamber fitting by falling down instruments or packs
(blockage of the pressure release)
Cold start and full. heavy load
Automatic pre-heating is switched off (specially important: for over-night
sterilisation)
Over load Preheating defective / Electronic board Output Preheating defective, no Voltage
Quick Program started but wrapped instruments loaded Fantilator DAC Professional defective
For DAC Professional NO TRAYPAPER should be used
When clothes as packing material are in use, clothes as small a s possible and
pack a single layer from it
Program interrupt before the end of the drying
Program interrupt before the pressure has been raised
Light load should be placed on the top tray, heavy load below
Mistakes at the installation of the Autoclave
Horizontal placement (condensate cannot flow out) Take care for the
backward slope!
Drain hose too long, siphon not below the autoclave, drain goes not
downward (loops)
Siphon blockage(Grubber valve sticky)
Cooler blocked (DAC Professional, dusty, the autoclave is too close to the wall or
placed in a to narrow cabinet)
internal blockage (by instrument oils!) as a result the vacuum pump has no max.
performance!
pressure release is blocked or any resistant against the release
-small instruments are fallen into the backward chamber fitting, condensate return hose
(between chamber-steam generator) (Vacuklav’s) or cham ber-T-pice on the pressure
release filter(Euroklav’s) Assemblement of the condensate-Return-Filter
additionally recommended!
-Blockage of the pressure release filter
-drainage hose bent, too long, loop, etc.
-autoclave internal hoses bent, twisted
Please check the way of pressure release from the chamber into the most
outside point of the system (siphon)!
Capillary switch water level(niveau) defective (on the steamgenerator/tube heating) or
the steam generator heating has a poor thermic contact to the boiler itselfe, this means
a bad heat-transmission to the water and additional water supply on NO DEMAND
(check the water level in the steamgenerator and bot capillary switch,see working
instruction error 34/36)
Check the cooling water quantity per minute (double valve cooling water Output 3 and
9)
The printout of the cycle log contains the following information:
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----------------------------------------- Sirona DAC Professional
------------------------------------------
Program : Universal program
134°C wrapped
Date : 07.07.1999
Time : 12:16:28 (Start)
Cycle no .: 5
------------------------------------------
Preheating: 133,5 °C
Water conductivity 7 µS/cm
Program step Press. Temp. Time
bar °C min
Start 0.03 70.1 00:00
1.Pulsing
Evacuation -0.90 67.2 01:30
Steam injection 0.10 98.8 02:35
2.Pulsing
Evacuation -0.80 66.9 03:19
Steam injection 0.10 100.9 04:21
3.Pulsing
Evacuation -0.80 78.8 05:11
Steam injection 0.10 101.1 06:14
Build-up of pressure 2.05 134.2 08:03
Beginning of steril. 2.05 134.2 08:03
End of sterilisation 2.19 136.0 11:33
Pressure release 0.10 106.5 12:10
Vacuum drying
Begin of drying 0,25 100.4 12:17
Drying pressure -0,90 70,1 22:17
End of drying -0,35 60,5 27:17
Venting -0,18 57,1 27:21
End -0,05 57,1 27:25
------------------------------------------
Temperature : 135.5 +0.2 /-0.2 °C
Pressure : 2.19 +0.03/-0.03 bar
Sterilisation t: 3 min 30 s
Time of day : 12:43:53 (End)
==========================================
276 9600567 1.15
PROGRAM HAS SUCCESSFULLY RUN
Program which has started
Current date
Time when program started
Daily cycle number
Preheating temperature
Conductivity of demineralized / distilled water
Program sequence phases with respective
values for steam pressure, steam temperature
and time (relative to start of program).
Message showing results
Mean sterilization temperature / deviations
Mean sterilization pressure / deviations
Actual sterilization time
Time at end of program
Information line with total cycle meter,
factory number and software version no.
Sirona DAC Professional Process
09/21/2006 54/61 Servicemanual DAC Professional
DAC Professional
09/21/2006 55/61 Servicemanual DAC Professional
Saturated Steam Table
Correspondence between temperature and absolute pressure of saturated steam
°C mbar (abs.) °C mbar (abs.) °C bar (abs.)
-10 2,6 46 101 96 0,88
47 106 97 0,91
-5 4,0 48 112 98 0,94
49 117 99 0,98
0 6,1 50 123 100 1,01
1 6,6 51 130 101 1,05
2 7,1 52 136 102 1,09
3 7,6 53 143 103 1,13
4 8,1 54 150 104 1,17
5 8,7 55 157 105 1,21
6 9,5 56 168 106 1,25
7 10,0 57 173 107 1,29
8 10,7 58 182 108 1,34
9 11,5 59 190 109 1,39
10 12,3 60 199 110 1,43
11 13,1 61 209 111 1,48
12 14,0 62 218 112 1,53
13 15,0 63 229 113 1,58
14 16,0 64 239 114 1,64
15 17,0 65 250 115 1,69
16 18,2 66 262 116 1,75
17 19,4 67 273 117 1,80
18 20,6 68 286 118 1,86
19 22,0 69 299 119 1,92
20 23,4 70 312 120 1,95
21 24,9 71 325 121 2,05
22 26,4 72 340 122 2,11
23 28,1 73 355 123 2,18
24 29,8 74 370 124 2,25
25 31,7 75 386 125 2,32
26 33,6 76 402 126 2,39
27 35,7 77 419 127 2,47
28 37,8 78 437 128 2,54
29 40,1 79 455 129 2,62
30 42,8 80 474 130 2,70
31 44,9 81 493 131 2,78
32 47,6 82 513 132 2,87
33 50,3 83 534 133 2,95
34 53,2 84 556 134 3,04
35 56,2 85 578 135 3,13
36 59,4 86 601 136 3,22
37 62,7 87 625 137 3,32
38 66,2 88 650 138 3,41
39 69,9 89 675 139 3,51
40 73,8 90 701 140 3,61
41 77,8 91 728 145 4,16
42 82,0 92 756 150 4,76
43 86,4 93 785 155 5,43
44 91,0 94 815 160 6,18
45 95,8 95 845 165 7,05
#1/2
Helix test
09/21/2006 56/61 Servicemanual DAC Professional
If you wish to carry out a control of the DAC Professional you can use a sterilization indicator and
batch monitoring system consisting of a test receptacle (the spiral unit) and an indicator strip. We
recommend Helix Test set mat. No 58 92 042 which is designed only for testing Class B autoclaves:
i.e. autoclaves that work with fractionated (pulsed) vacuum processes.
1. Unscrew the cap from the unit. 2. Take the indicator strip out of the
package and fold it with the indicator
surface on the inside.
3. Insert the folded indicator strip into
the closure cap, entering the bended
end first.
4. Make sure that the indicator strip is
pushed as far as possible into the cap.
5. Screw the closure cap back into
place as far into the spiral unit as
possible.
Evaluation:
A: Only if the colour of the indicator
strip changes completely the steam
penetration is satisfactory.
B: If the indicator still shows some
yellow colour, the steam penetration
has NOT been satisfactory.
Place the spiral unit with its inserted indicator strip into the autoclave with the items to be sterilized,
and start the respective B program.
If you wish to employ the spiral unit to check a Class B vacuum sterilizer, first run one sterilization
cycle with the autoclave without any items inside. Then insert a new indicator strip into the spiral
unit as described above, and place the spiral on a tray into the empty sterilization chamber. Then
run the Bowie & Dick test cycle while the autoclave is empty.
When the cycle is finished, remove the spiral unit from the autoclave, and unscrew the cap of the
unit. Now check the indicator strip. If it shows a complete colour change, you can assume that the
autoclave is functioning effectively and that it successfully sterilizes.
According to EN13060 this is a PCD Process Challenge Device.
Helix Test Set: mat. no.: 58 92 042
Bowie&Dick test set: mat no.: 58 92 034
Bowie & Dick test
09/21/2006 57/61 Servicemanual DAC Professional
1. Place the complete package in the autoclave.
The unused indicator shows the colour red.
2. open the package.
3. If the indicator has only been changed partly the
penetration is not satisfactory.
4. Only if the colour of the indicator is uniform the
penetration is satisfactory.
According to EN13060 this is a PCD Process Challenge Device.
Bowie&Dick test set: mat no.: 58 92 034
Helix Test Set: mat. no.: 58 92 042
Valve diagram
09/21/2006 58/61 Servicemanual DAC Professional
09/21/2006 59/61 Servicemanual DAC Professional
Program-cycle / Diagnosis-program
Nitram Dac Professional
Press both buttons
+
-
and hold ...
... after power is
switched on.
-
P
S
Buttons:"Continue" in the Menu ing diagnosis-rogram
+
Button choose program:"Enter/Quit/Input" in the diagnosso-program
Button Start/Stop: "Escape/Leave/Interrupt" in the diagnosis-program
Diagnosis
Analog-Inputs
S
P
Temp:Chambr_elec
xx.x°C
Temp_Chambr_Dis
1
Temp_Chambr_Dis
2
Pressure_Chamber
xxxx mbar
Temp_Preh_Cham.
xx.x°C
Reserve
xx mba r
Conductivity
xxx µS/cm
+
-
Main- and Submenues can be changed:
forward and with backwards scrolling
and always leaving the loop
Diagnosis
Digital-Inputs
S
I5: Door locking dev.
+
+
-
I1: Door contact
I2: OH protector HT
I3: Reserve open
I4: Aqua dem, current
I6: Aqua dem
swimmer closed
I7: W. water
Swimmer closed
closed
closed
-
P
open
open
Diagnosis
Digital-Outputs
S
O5: Pump/SV aqua dem
P
O1: Steam-generator
x.x bar xx°C ( o ff)
O2: Pre-heating
x.x bar xx°C ( o ff)
O3: Vacuum-pump
x.x bar xx°C ( o ff)
O4: Fan
x.x bar xx°C(off)
x.x bar xx°C ( o ff)
O6: SV Vacuum 1/2
x.x bar xx°C ( o ff)
O7: SV Press. rel.1
x.x bar xx°C ( off)
O8: SV Ventilation
x.x bar xx°C (off)
O9: SV Press. rel. 2
x.x bar xx°C (off)
O10: Door lock dev.
x.x bar xx°C (off)
+
-
(on)
(on)
(on)
(on)
(on)
(on)
(on)
(on)
(on)
(on)
Diagnosis
Keyboard
Diagnosis
Self-Test
P
Keyboard
-
+
P
S
-
Nr.: 0
Keyboard
Nr.: 10
Keyboard
Nr.: 20
Keyboard
Nr.: 40
Keyboard
Nr.: 80
+
P
P
P
P
P
Self-Test
Signal
Sirona-GmbH
Gerätename xxx
Self-Test
Memory-Test OK
Self-Test
Battery OK
Printer is
not ready
P
P
P
Symbol Meaning Example
xxxxklav XX-X Name Vacukla 30-B
P
typ Type V30
progvers Programversion 3.16
spr Language D
parvers Parametervers. 01.13
P
Vacuklav 30-B
V30-3.16 D01.13
Diagnosis
Statistics
P
Diagnosis
Maintenance-data
P P
Total: xxxx
succesfull.: xxxx
Service: dd.mm.yy
run cycles: xx
P
Maintenance-data
-
S
+
Update?
P
Service: dd.mm.yy
run cycles: 0
S
Diagnosis
Malfunction-mem
Diagnosis
Memory init.
Diagnosis
Backup Parameter
Diagnosis
Delete Backup
Diagnosis
Version
P
P
P
P
P
S
Malfunction-mem
print?
Memory init.
Sure?
Backup Parameter
Sure?
Delete Backup
Sure?
xxxxklav XX-X typprogvers spr parvers
hh:mm:ss
x.xx bar xx°C
Neutral position
P
S
+ P
-
S
+ P
-
S
+ P
-
S
P
Page 1
09/21/2006 60/61 Servicemanual DAC Professional
+
Press all three
buttons and hold.
... after power is
switched on
Sirona-Service
Pressures
P+-+ +
-
P
S
P P P S
Selection buttons
Button "Program"
Button "Start-Stop"
-
Pressures
P1: xx
+
P2...Pn: xx
Pressures
Program-cycle / Service-program
Nitram Dac Professional
+
-
Pressures
Px: xx (flashs)
-
+
Sirona.Service
Tempratures
Sirona-Service
Temp.-Diff.
Sirona-Service
Process-times
Sirona-Service
Times * 50 ms
Sirona-Service
Switch.-times
Sirona-Service
Monit.-times
Sirona-Service
Frequencies
Sirona-Service
Hysteresis
Sirona-Service
Conductivities
Sirona-Service
Control-Parameters
Sirona-Service
System-Flags
Sirona-Service
Sensor-numbers
Sirona-Service
Pol. digit. inputs
Sirona-Service
Pol. digit. outputs
Sirona-Service
Production year
Temperatures
T1: xx
Temp.-Diff.
D1: xx
Process-times
t1: xx
Times * 50 ms
tms1: xx
Switch.-times
z1: xx
Monit.-times
Uet1: xx
Frequencies
a1: xx
Hysteresis
H1: xx
Conductivities
L1: xx
Control-Parameters
R1: xx
System-Flags
F1: xx
Sensor-numbers
Sn1: xx
Pol. digit. inputs
IM1: xx
Pol. digit. outputs
OM1: xx
Production year
Fj1: xx
Temperatures
T2...Tn: xx
Temp.-Diff.
D2...Dn: xx
Process-times
t2...tn: xx
Times * 50 ms
tms2...tmsn: xx
Switch.-times
z2...zn: xx
Monit.-times
Uet2...Mtn: xx
Frequencies
a2...fqn: xx
Hysteresis
H2...Hn: xx
Conductivities
L2...Cn: xx
Control-Parameters
R2: xx
System-Flags
F2...Fn: xx
Sensor-numbers
Sn2...Snn: xx
Pol. digit. inputs
IM2...IMn: xx
Pol. digit. outputs
OM2...OMn: xx
Temperatures
Tn: xx(flashs)
Temp.-Diff.
Dn: xx(flashs)
Process-times
tn: xx(flashs)
Times * 50 ms
tmsn: xx(flashs)
Switch.-times
zn: xx(flashs)
Monit.-times
Uetn: xx(flashs)
Frequencies
an: xx(flashs)
Hysteresis
Hn: xx(flashs)
Conductivities
Cn: xx(flashs)
Control-Parameters
Cpn: xx(flashs)
System-Flags
Fn: xx(flashs)
Sensor-numbers
Snn: xx(flashs)
Pol. digit. inputs
IMn: xx(flashs)
Pol. digit. outputs
OMn: xx(flashs)
Production year
Fj1: xx(flashs)
Sirona-Service
Production no.
Production no.
Fn1: xx
Production no.
Fn 1: xx(flashs)
S
Program-cycle
basic position
Page 1
Revision history
09/21/2006 61/61 Servicemanual DAC Professional
Revision
No
PRO 1.0 21.09.06 MH Initial release.
Date (Y-M-D) Responsible Description of change
bеЦдблЬ
61 75 538 D 3472
D 3472.076.02.01.02
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