User Manual
Preheating furnaces
IT
FR
ES
DE
EN
furnace DM
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GENERAL INDEX
CH. 1
INTRODUCTION
Pag. 141 1.1 How to read and use the manual
Pag. 142 1.2 Terminology and symbols
CH. 2
GENERAL INFORMATIONS
Pag. 143 2.1 Responsibility
Pag. 143 2.2 Warranty: general instruction
Pag. 143 2.3 Authorized personnel
Pag. 144 2.4 General safety regulations
CH. 3
DESCRIPTION OF THE EQUIPMENT
Pag. 146 3.1 General description of the equipment
Pag. 146 3.2 Table of the components DM 30,DM 40, DM 50
Pag. 147 3.2.1 Description of the components
Pag. 147 3.3 Table of the components DM 4R
Pag. 147 3.3.1 Description of the components
Pag. 148 3.4 Table of the components DM 1 and DM 1G
Pag. 148 3.4.1 Description of the components
Pag. 148 3.5 Control panel
Pag. 149 3.5.1 Description of control panel components
Pag. 150 3.6 Description of the phases making up a program
Pag. 151 3.7 Identification data
Pag. 151 3.7.1 On-equipment labels and symbols
CH. 4
TECHNICAL CHARACTERISTICS
Pag. 152 4.1 Technical characteristics and operating start
Pag. 152 4.1.1 Technical Data
Pag. 153 4.1.2 Standard accessories and accessories available on request
Pag. 153 4.2 Temperature tolerances
CH. 5
TRANSPORT AND MOUNTING
Pag. 154 5.1 Warning
Pag. 154 5.2 Packing and unpacking
Pag. 155 5.3 Transport and mounting
Pag. 156 5.4 Elimination / Dismantling
CH. 6
INSTALLATION AND FIRST-TIME USE
Pag. 157 6.1 Warnings and precautions
Pag. 157 6.2 Permitted ambient conditions
Pag. 157 6.3 Required work space
Pag. 158 6.3.1 Worktops
Pag. 159 6.4 Connecting up to the power supply
Pag. 160 6.4.1 Connecting up the aspiration unit (optional for DM 30, DM 40, DM 50, DM 4R)
Pag. 160 6.5 Starting up the equipment
Pag. 161 6.6 Purpose of the equipment / Improper and forbidden use
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CH. 8
MAINTENANCE
Pag. 174 8.1 Cleaning
Pag. 174 8.2 Routine maintenance
Pag. 175 8.3 Unscheduled maintenance
Pag. 175 8.4 Restarting after a long period of inactivity
Pag. 175 8.5 Requesting technical assistance
CH. 9
TROUBLESHOOTING
Pag. 176 9.1 Warning
Pag. 176 9.2 Problems, causes and remedies
APPENDICES
Pag. 178 A.1 CE Declaration of conformity
Pag. 179 A.2 Warranty certificate and identification form
Pag. 180 A.3 Maintenance and repair worksheet
Pag. 181 A.4 Authorized service partners
Pag. 181 A.5 Notes
Pag. 182 A.6 Control panel
The data given in this manual may be modified without prior notice.
CH. 7
USING THE EQUIPMENT
Pag. 162 7.1 Warning
Pag. 162 7.2 Safety system
Pag. 163 7.2.1 Maximum temperature increase rate
Pag. 163 7.3 Data programming
Pag. 163 7.3.1 Entering data into program n.1
Pag. 164 7.3.2 Entering data into remaining programmes
Pag. 165 7.4 Using the aspiration unit
Pag. 165 7.4.1 Routine mode
Pag. 165 7.4.2 “Fast” mode
Pag. 165 7.4.3 Extraction fan
Pag. 165 7.5 Delayed start
Pag. 166 7.6 Immediate start
Pag. 167 7.7 Creating an 8-phase work cycle
Pag. 167 7.8 Choosing a program
Pag. 168 7.9 Operation: general notes
Pag. 169 7.10 Notes on lining fusion system
Pag. 170 7.11 Correcting data on a program that is running
Pag. 170 7.12 Changing the program in progress
Pag. 170 7.13 Checks during work
Pag. 171 7.14 No electrical power
Pag. 172 7.15 Programming mode for DM 4R ovens
Pag. 172 7.16 Residual risk
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CHAPTER 1: INTRODUCTION
This Use and Maintenance Manual provides information on the utilisation, installation and
maintenance of the DM series ovens (versions furnace DM30, furnace DM40, furnace DM50;
furnace DM4R; furnace DM1; furnace DM1G), manufactured by Zhermack S.p.A.
• The equipment must be used in accordance with the instructions in this manual: it is therefore
recommended that you read it carefully prior to installation and start-up. Make sure that you
read the entire manual and pay particular attention to messages written in bold type or items
highlighted by boxes and/or symbols: the symbols are designed to highlight situations involving
danger or requiring caution (see paragraph 1.2).
• Observance of standards and regulations shown in this manual will ensure that the equipment
is used properly and that maintenance work is carried out safely.
• This Use and Maintenance Manual is an integral part of the equipment: it should therefore be
kept together with the equipment so that it can be consulted as and when necessary (keep the
booklet in a secure dry place away from sunlight, atmospheric agents, etc.). It must be
available for consultation throughout the working life of the equipment even when the equipment
is sold or finally dismantled.
• It is recommended that you keep this manual constantly updated by integrating any
amendments, additions or modifications made by the Manufacturer. Any notes or comments
should be made on the blank pages at the rear of the booklet (see Appendices: Notes).
• Use the manual properly so that it is not damaged in any way.
• Do not remove, tear or write on any part of the pages.
• If the manual is lost or damaged and its contents become illegible you can request a
replacement copy from the Manufacturer.
The purpose of this Use and Maintenance Manual is to provide users with information on how
to operate the equipment properly. The manual contains all the information needed to use the
device as intended: in particular the manual includes instructions and information on the
following:
• correct installation of the equipment;
• Detailed description of how the equipment works and its components;
• Initial start-up;
• Scheduled maintenance;
• Basic Safety and Accident Prevention info.
This manual contains nine chapters each of which covers a specific argument.
The appendices at the rear of the manual are a useful complement to these chapters.
1.1
HOW TO READ AND USE THE MANUAL
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1.2
TERMINOLOGY AND SYMBOLS
It is important that you understand the following symbols and their significance as they
highlight important information such as critical situations, practical advice, or straightforward
information.
If you have any doubts as to the significance of a symbol always consult this page.
• Critical situations concerning dangerous areas or tasks in which failure to observe the
instructions may render the warranty null and void, or cause damage to equipment, connected
components or the surrounding area, are highlighted by the symbol:
DANGER!
This symbol refers to safety standards which must be observed at all times in order to
protect both workers and equipment.
WARNING!
This symbol refers to safety standards which must be observed carefully in order to
guarantee your safety, other people's safety and prevent damage to the equipment.
• Tasks for which failure to observe instructions or tampering with equipment parts may put
personnel in serious danger are highlighted by the symbol:
• Any work that fails to comply with instructions in this manual, or any tampering which might
automatically render the warranty null and void, is highlighted by the following symbol:
FORBIDDEN!
This symbol refers to actions which must never be carried out (i.e. forbidden
actions).
• Any general information and/or advice which may be useful at any time is highlighted by the
following symbol:
NOTE!
This symbol highlights information and/or useful advice.
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Personnel may be divided into the following categories:
Operator-user:
Person trained to use the equipments. He/she may carry out all the tasks needed to operate the
equipments: these tasks include starting/stopping the equipment, carrying out routine inspections
and any other tasks linked to everyday equipment use.
2.1
RESPONSABILITY
CHAPTER 2: GENERAL INFORMATIONS
Failure to observe the instructions in this Use and Maintenance Manual exonerates the
Manufacturer from any liability whatsoever.
For any matters not covered by this manual or about which you have any doubts please contact
the Manufacturer directly:
Zhermack S.p.A.
Via Bovazecchino, 100
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If equipment maintenance work fails to comply with instructions or is done in such a way as to
compromise equipment integrity or modify its characteristics Zhermack S.p.A. shall be
exonerated from any liability as regards worker safety and/or equipment performance.
2.2
WARRANTY: GENERAL INSTRUCTION
Included in the Appendices to this Use and Maintenance Manual you will find the Warranty
certificate and the ID Form which must be filled out in full.
In general the Warranty is rendered null and void by the following:
,PSURSHUequipment use.
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6HULRXVQHJOLJHQFHRIPDLQWHQDQFHVFKHGXOHV
0RGLILFDWLRQVWRRUZRUNRQWKHequipment which has not been authorised by the Manufacturer
(especially on safety devices).
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PRGLILHGRUWDPSHUHGZLWKZLWKRXWSULRUZULWWHQFRQVHQWIURPWKH0DQXIDFWXUHU
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2.3
AUTHORIZED PERSONNEL
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Zhermack S.p.A. authorised maintenance technician:
Person authorised to carry out work on the equipment under all operating conditions and all
safety levels. He/she is also authorised to carry out any mechanical or electrical
repairs/adjustments, scheduled maintenance and any component replacement work.
2.4
GENERAL SAFETY REGULATIONS
The operator must read the advice and warnings given below and comply with such regulations
DWDOOWLPHVGRLQJVRZLOOHQVXUHVDIHORQJODVWLQJequipment performance.
The oven that you have purchased is a source of danger owing to the high temperatures
occurring both in its interior and on its exterior. The following precautions must therefore be
observed at all times:
WKHRYHQPXVWRQO\EHXVHGDWWKHUDWHGYROWDJHLQGLFDWHGRQWKHRYHQ,'SODWH
'RQRWDOORZXQWUDLQHGSHUVRQQHOWRXVHWKLVequipment.
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must be in possession of these items in order to utilise the equipment.
7KHF\OLQGHUVPXVWEHLQWURGXFHGDQGUHPRYHGIURPWKHSUHKHDWLQJFKDPEHUXVLQJVXLWDEOH
pincers.
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material to prevent burns.
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systems that allow only frontal access (gates, shutters etc.).
7KHRYHQPXVWEHSRVLWLRQHGRQQRQIODPPDEOHVXSSRUWVDQGWRSVRQO\QRKLJKO\IODPPDEOH
materials, whether solid, liquid or gaseous, may be stored or used in the vicinity of the oven.
7KHequipment must remain fully protected both during heating and for at least six hours after
it has been switched off.
$QLQIRSODWHUHDGLQJ´:$51,1*+273$576µPXVWEHSODFHGE\WKHequipment (see section
7DNHPHDVXUHVWRHQVXUHWKDW\RXDUHQRWGLVWUDFWHGZKHQXVLQJWKHequipment.
1HYHUXVHDPDOIXQFWLRQLQJequipment and always inform the Maintenance Manager of any
faults.
([WUDFWRUIDQVFRQQHFWHGWRDQRXWGRRURXWIORZSLSHPXVWEHXVHGZKHQPL[WXUHVXVLQJ
solvents harmful to operators’ health are used.
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Zhermack S.p.A. cannot be held liable for any damage to persons or objects
caused by incorrect maintenance carried out by unqualified personnel or
maintenance work that does not comply with the instructions in this manual.
Zhermack S.p.A. is, as of this moment, exonerated from any liability concerning
injury to persons or damage to objects that may result from using this
equipment in a way other than that described in this manual.
This equipment has electrical parts: therefore, in the event of a fire, no matter
how small, use only powder-type extinguishers. Never attempt to put out an
electrical fire with water.
• Do not open compartments containing electrical parts.
• Have the equipment inspected by the Manufacturer and/or Authorised Dealer at least one
every 12 months.
• Do not replace the power lead or tamper with the supplied plug.
• It is forbidden to use the equipment on items other than those for which it has been specifically
designed.
• Before doing any cleaning, routine and/or unscheduled maintenance work make sure that the
equipment has been unplugged from the mains socket.
• Make sure that there are no foreign objects inside the work area as these could damage the
equipment and/or injure personnel.
• Do not use petrol or flammable solvents as detergents; use only non-flammable, non- corrosive,
and non-toxic substances (see paragraph 8 .1).
• Do not used compressed air to clean small pieces; if you do so you should protect your eyes
with goggles that provide lateral protection and limit air pressure to a maximum of 2 bar.
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3.1
GENERAL DESCRIPTION OF THE EQUIPMENT
3.2
TABLE OF THE COMPONENTS DM30, DM40, DM50
CHAPTER 3: DESCRIPTION OF THE EQUIPMENT
F
E
A
D
B
C
G
L
M
H
I
The DM series ovens have been designed to fire and/or melt the lining cylinders used in
odontotechny. The DM series of ovens consists of:
• DM30, DM40, DM50, ready for aspiration tube insertion.
• DM4R with rotation pan as standard, ready for insertion of aspiration tube.
• DM1, DM1G for the melting of special skeleton cylinders, fitted with one or two aspiration
tubes respectively.
furnace DM50 furnace DM40 furnace DM30
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3.3
TABLE OF THE COMPONENTS DM 4R
C
B
D
N
A
G
E
O
P
M
L
F
I
H
3.2.1
Description of the components
A. Aspirator (optional Code C305319)
B. Door open/close handle
C. Magnetic closure
D. Control panel (see section 3.5)
E. Oven chamber door
F. Door microswitch
G. Ceramic air bleeder
H. Power lead
I. Fuses
L. Hood socket
M. Aspirator socket
3.3.1
Description of the components
A. Aspirator (optional Code C305320)
B. Door open/close handle
C. Magnetic closure
D. Control panel (see section 3.5)
E. Oven chamber door
F. Door microswitch
G. Ceramic air bleeder
H. Power lead
I. Fuses
L. Hood socket
M. Aspirator socket
N. Rotation pan
O. Led
P. On/off switch
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6 7 8 9 10 11 12 13
22
15
14
23
25
27
28212019181716
24
26
2
1 2a 3a 4a 5a
3 4 5
3.4
TABLE OF THE COMPONENTS DM 1, DM 1G
3.5
CONTROL PANEL
3.4.1
Description of the components
A. First aspiration tube (version DM 1 )
A1. Second aspiration tube (version DM 1G )
B. Door open/close handle
D. Control panel (see section 3.5)
E. Oven chamber door
F. Door microswitch
Q. Main switch
furnace DM1
furnace DM1G
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3.5.1
Description of control panel components
1. Phase 1 Horizontal segment – Delayed start phase
2. Phase 2 Oblique segment - Increase phase
2a. Phase 2 Horizontal segment - Holding phase
3. Phase 3 Oblique segment - Increase phase
3a. Phase 3 Horizontal segment - Holding phase
4. Phase 4 Oblique segment - Increase phase
4a. Phase 4 Horizontal segment - Holding phase
5. Phase 5 Oblique segment -Increase phase
5a. Phase 5 Horizontal segment -Holding phase
6. Wait LED Wait/delayed start on
7. Work LED Work/oven running
8. °C Shows temperature setting on display
9. °C/MIN Shows temperature increase rate setting on display
10. HR-MIN Shows remaining holding time
11. Data display
12. PROG. SELECT. Selects programmes 0-9
13. PHASE Selects phases 1 - 5
14. Selected program n° display
15. Phase n° display
16. Main switch (on DM1-DM1G there is an on/off light)
17. TEMP. Shows in-chamber temperature
18. TEST Checks the board functions
19. PROG. Access to programmes
20. START/STOP Start/stop work
21. ERASE Cancels data on display (11)
22. LED TIME Programming and time (hours and minutes) reading
23. LED SLEW RATE Programming and fast reading of rate in °C per minute
24. LED STO TEMP Programming and temperature stop reading (in °C)
25. LED TEMP In-chamber temperature on display (in °C)
26. LED -------- Element on
27. LED PROG. Programming LED
28. ENTER Saves (confirms) on-display data (11)
Control panel structure/functions are the same on all DM ovens.
To aid comprehension during the programming phase too the display panel table is shown both
on the facing page and in the fold-out Appendix A.5 at the end of this Use and Maintenance
Manual.
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3.6
DESCRIPTION OF THE PHASES MAKING UP A PROGRAM
PHASE 1: programmed start.
The oven can be programmed to come on at a set time even when no members of personnel
are in the laboratory.
The delay interval can be set anywhere between a minimum of 1 minute and a maximum of 7
days.
Use of the delayed start feature is not, of course, necessary for proper oven operation.
PHASE 2, PHASE 3, PHASE 4: temperature increase and holding time.
In each PHASE three (3) data items are entered in the following order:
• Temperature:
Minimum: ambient temperature
Maximum: 1,100°C.
• Increase rate in °C/minute:
Minimum: 1°C per minute
Maximum: the maximum power rating for each model in the DM series (see section 4.1.1).
• Holding (temperature stabilisation) time in hours and minutes:
Minimum: 1 minute
Maximum: 20 hours.
This parameter begins when the oven reaches the set temperature.
PHASE 5
Temperature, increase rate and holding time need to be set for PHASE 5 too. The main
difference with respect to the preceding phases is that the holding time expires and the end of
the program is signalled by an acoustic warning signal (buzzer) lasting 30 seconds.
From that moment on the oven maintains the final temperature setting until the operator
switches the oven off.
After setting PHASE 5 program data it is also possible to set the aspirator switch-off
temperature (see section 7.4).
Not all work phases need be used on all programs; the number of phases
employed depends, in fact, on the desired results. However, its is important
that all programs conclude with PHASE 5.
It is also necessary to set an increase rate of 10°C in PHASE 4 where the
temperature has to drop from 750°C to 600°C: doing so stops the oven
dropping below the 600°C setting.
Special techniques for the melting of specific linings also exist. These techniques allow
oscillating temperature patterns to be used (i.e. lowering the temperature and then raising it
again).
For example:
• PHASE 2 - Temperature 250°C - Increase rate 6°C/min - holding time 20 minutes.
• PHASE 3 - Temperature 750°C - Increase rate 10°C/min - holding time 30 minutes.
• PHASE 4 - Temperature 600°C - Increase rate 10°C/min - holding time 30 minutes.
• PHASE 5 - Temperature 850°C - Increase rate 12°C/min - holding time 1 hour.
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ATTENZIONE! DANGER OF AN ELECTRICAL
CURRENT. DO NOT OPEN DOORS OR REMOVE PROTECTION BEFORE YOU
HAVE DISCONNECTED THE PLUG FROM THE ELECTRICAL SOURCE.
3.7.1
On-equipment labels and symbols
The following symbols are applied on the equipment:
3.7
IDENTIFICATION DATA
The equipment described in this manual has an ID platelet giving information about both the
equipment and the manufacturer:
Zhermack S.p.A.
BADIA POLESINE - ITALY
C305314 - DM 1G
Matr. 20000000
380 V~ 50/60 Hz 7500W
A
B
C
D
The equipments has been built in compliance with the EC directives listed in the enclosed "EC
declaration of conformity". When requesting spare parts, information or assistance from your
Authorised Servicing Centre always quote the data on the ID plate.
Should the ID plate deteriorate and become illegible, even partially, order a replacement plate
from the manufacturer: remember to quote the relevant data.
A. Name and address of manufacturer
B. Equipment code and model
C. Serial number
D. Power supply information
Do not remove and/or damage the plate as you must be able to read the data at
all times.
WARNING! HOT PARTS. EXTREME DANGER.
USE PINCERS, EYE GOGGLES AND HEAT-INSULATED GLOVES.
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4.1
TECHNICAL CHARACTERISTICS AND OPERATING START
Zhermack S.p.A. designs and manufactures work instruments that provide cutting-edge
technology and first-rate quality. They are specially designed to provide made-to-measure
solutions that offer long-lasting performance every single day of their working life.
In making these products Zhermack S.p.A. makes use of the latest design tools, thus ensuring
that all finished equipment is as functional as possible. Use of only top-quality materials and
thorough testing aimed at providing maximum user safety are an Zhermack S.p.A. constant,
making our products safe and internationally competitive.
The DM ovens work by melt-firing the alloy linings used in odontotechny and allow users to
employ special techniques for both variable-temperature melting of specific linings and the
melting of special skeleton linings (DM1 and DM1G).
The various DM oven versions differ mainly in terms of technical characteristics; however,
computerisation is governed by a board having the same characteristics on each model.
Programming is explained in detail in Chap. 7.
DM series ovens are characterised by:
• computerised operation with a 10-program (0-9) memory.
• 5 phases per program plus a special 8-phase program feature.
• digital controls.
• protection against accidental data cancellation.
• large-size luminous displays for easy, user-friendly data reading during both programming and
work.
• function buzzers.
• cut-out fuses.
• thermocouple cut-out signal and automatic deactivation of element.
• door with magnetic closure.
• safety microswitch connected to door: when the latter is opened this switch cuts the power to
the oven chamber.
CHAPTER 4: TECHNICAL CHARACTERISTICS
4.1.1
Technical data
MODEL: DM 30 DM 40 DM 50
Dimensions (cm) L33 x P32 x H45 L39 x P37 x H49 L39 x P47 x H49
Interchamber dimensions (cm) L12 x P16 x H9,5 L17 x P16 x H11 L17 x P16 x H11
Weight (kg) 15 26 30
Aspirator dimensions (cm) L12 x P15 x H65 L12 x P15 x H65 L12 x P15 x H65
Aspirator weight (kg) 3 3 3
Cylinder capacity 4-3x 2-9x 6-3x 4-9x 11-3x 6-9x
Min. increase time to 700°C 30 °C 30 °C 40 °C
Max absorbed power (watt) 1550 2000 2400
Power supply
230V~ 10% 50/60Hz 230V~ 10% 50/60Hz 23 0V~10% 50/ 60Hz
Protection rating IP IPX0 IPX0 IPX0
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* Please quote the order code when ordering a spare part. You may order parts from your local Authorised Servicing Centre.
4.2
TEMPERATURE TOLERANCES
Temperature tolerances on DM preheating ovens are ± 10 % with respect to the maximum
temperature limits given in section 4.1.1.
4.1.2
Standard accessories and accessories available on request
MODEL: DM 4 R DM 1 DM 1 G
Dimensions (cm) L44 x P47 x H58 L63 x P65 x H86 L63 x P82 x H86
Interchamber dimensions (cm) Ø 17,5 L30 x P23 x H18 L30 x P40 x H18
Weight (kg) 43 90 120
Aspirator dimensions (cm) L12 x P15 x H65 - Aspirator weight (kg) 3 - Cylinder capacity 7-3x 3-9x 12-9x 24-9x
Min. increase time to 700°C 30 °C - Max absorbed power (watt) 2200 5000 7500
Power supply
230V~ 10% 50/60Hz 230V~ 10% 50/60Hz 380V~ 10% 50/60Hz
Protection rating IP IPX0 IPX0 IPX0
CO MPONENT S QU AN TITY OR D. CO DE*
Ceramic air bleeder 1 XI00300 30
Scored refrac. plate for Series 30 1 XI 00300 70
Scored refrac. plate. for Series 40-50 1 XI003 00 73
Chamber base refractory tube Series 30 2 XB0 03 0370
Chamber base refractory tube Series 40-50 2/3 XB 00 30180
Door open/close handle 1 XI 00310 10
Fuse 2
Hood socket 1 XE 99 00140
Aspirator (for Series DM 30,40,50) C 30 5319
Aspiratore (for Series DM 4R) C30532 0
CO MPONENT S QU AN TITY OR D. CODE*
Bakelite handle 1 XI 00310 10
CE 32 A plug 1 XE 99 0160
In addition to this Use and Maintenance Handbook the machine DM 30, 40, 50 comes
complete with:
While ovens in the DM 1 and DM 1G series are supplied complete with:
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5.1
WARNING
5.2
PACKING AND UNPACKING
All the material is thoroughly checked by the Manufacturer prior to shipment. When you
receive the goods make sure they have not been damaged during transit and that no-one has
tampered with the packaging and removed any of the parts contained therein.
Should you note any damage or missing parts please inform your Dealer and the shipping
carrier immediately: take photographs and send them on to both dealer and carrier.
The packaging, consisting of a cardboard box with internal expanded plastic padding, contains:
• DM series oven;
• standard equipment for each model (see section 4.1.2);
• this Use and Maintenance Manual.
CHAPTER 5: TRANSPORT AND MOUNTING
To prevent any injury to persons or damage to things always proceed with the
utmost care and attention when handling the equipment. Observe all the
precautions and instructions contained in the following paragraphs.
It is recommended that you keep the original packaging so that, if
necessary, it can be re-utilised; doing so ensures that you do not use
unsuitable packaging materials during transport and handling which might
lead to accidental damage (see section 5.3).
The equipment is not supplied with pincers, gloves or protective glasses;
however, the operator must be in possession of these items in order to
utilise the equipment.
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Should the oven you have purchased need to be moved it must first be fully disconnected from
the power supply and then left to cool completely. Proceed as follows:
1. close the oven chamber door;
2. gather all its accessories together;
Equipment handling for transport and/or packaging purposes must be carried out in compliance
with a few essential rules. These are as follows:
5.3
TRANSPORT AND MOUNTING
Failure to observe the above exonerates the Manufacturer from any
liability concerning equipment malfunction and consequently renders the
Warranty null and void.
When shipping/delivering the equipment to your Authorised Servicing
Centre always enclose a copy of the purchase document and a copy of the
properly compiled ID form.
If the unit is to be transported by courier, the postal service or rail it is
recommended such shipments be insured.
a. To handle and/or move the
equipment there must be at
least 2 (two) workers: they
must grip the unit securely
under its base.
b. Handling and/or moving
the equipment by gripping its
protective screen is strictly
forbidden.
c. Handle and/or move the
heaviest models with the aid
of suitable lifting gear.
3. Pack the equipment in its original box or, if this is not possible, take all the necessary
precautions to protect the equipment against knocks or drops, in that the goods are
transported at the owner's risk.
Proceed cautiously, bearing in mind the size and weight of the unit (see section 4.1.1), so as to
prevent any accidents that might be caused by failure to evaluate such factors.
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5.4
ELIMINATION / DISMANTLING
When disposing of the packaging materials the user must comply with the standards in force
in his/her country regarding the following materials:
• Wood/paper: non-polluting materials, but must be recycled properly;
• Polystyrene/plastic: pollutants which must not be burnt (toxic fumes) nor dispersed into the
environment, but disposed of in compliance with the standards in force in the country of use.
If the equipment is to be dismantled the user must, in compliance with EC directives and the
laws in force in the country of use, effect elimination and recycling of the following materials:
• Plastic and glass parts, insulated electrical wiring, rubber parts;
• There are no toxic or corrosive parts.
This product must not be disposed of as household waste but rather, when
no longer used, must be collected separately according to EC Directive
2002/96.
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The equipment must rest on non-flammable supports and tops only.
It is strictly forbidden to store any solid, liquid or gaseous flammable substances
in the vicinity of the equipment.
6.1
WARNINGS AND PRECAUTIONS
CHAPTER 6: INSTALLATION AND FIRST-TIME USE
So as to provide greater clarity the numbers given in the diagrams in this
chapter correspond exactly to the numbering in the Components Table
(Ch. 3).
Work area lighting is an important factor in both personnel safety and the
ultimate quality of the work being done. In Italy lighting must comply with a
Ministerial Decree Law that clearly defines minimum lighting requirements.
In other countries lighting requirements form part of the accident prevention
and workplace hygiene standards.
Before proceeding with installation make sure that all relevant safety conditions prevail and
follow the instructions below carefully.
6.3
REQUIRED WORK SPACE
Choosing a good workplace with an appropriate amount of space available for equipment
installation is an essential factor in personnel safety, the quality of the work and proper
maintenance. This zone must not only be spacious enough to allow for optimum equipment
operation but must also be well illuminated, aired, not dusty and not exposed to direct sunlight.
Note also that the unit must be positioned so the connection plug can be handled/manipulated with
ease.
6.2
PERMITTED AMBIENT CONDITIONS
Unless stated otherwise at the time of order the equipment will be configured to operate properly
under the following ambient conditions:
Ambient conditions other than those listed above may cause malfunctions or sudden
breakdowns. Lighting in the installation area must be sufficient to provide good visibility at every
single point on the equipment.
More specifically, luminosity must not be less than 200 lux, lighting must be as uniform as
possible and there must be no reflected light as this could dazzle the operator.
The equipment must not be used in workplaces having an atmosphere which is
explosive and/or at risk of fire as it has not been designed for use in such areas.
Nevertheless, should a fire accidentally break out follow the procedure described
in paragraph 2.4.
Place of Use Indoors
Altitude Up to 2000 m
Working temperature From 5°C to 40°C
Humidity Max 80%
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6.3.1
Worktops
The equipment (the example in the
figure is the DM 40) has been
designed for use on a rigid worktop
parallel to the floor. Suitable worktops
include service furniture (where the
operator is standing) or modelling tables
(where work is done sitting down). All
worktops must be checked for stability.
The oven must be installed in a protected area using guards equipped with
systems that allow only frontal access (gates, shutters etc.).
Should the above-described connection be necessary it is essential that no
elbows or bends be created as combustion fumes and gases would no longer
be drawn outwards.
Position the equipment so that the fan flue is beneath the mobile hood
aspiration tube.
The aspiration fan flue must be free and must not be connected to other tubes or hood ducts.
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6.4
CONNECTING UP TO THE POWER SUPPLY
The user must provide a power connection with relative socket near the equipment installation
point. The user must also install an adequate electrical circuit breaker upstream from the socket
as well as efficacious overload/indirect contact safety devices.
Connection is effected via the safety plug (16A - 32A for DM1/DM1G, in compliance with
European standards) at the end of the power lead: this must be inserted in the mains socket.
When connecting check:
• that mains voltage and frequency are as indicated on the identification plate (incorrect power
supply voltage may damage the equipment);
• that the mains supply has a proper, efficient earth connection.
Should power surges occur while the equipment is working, or when it is any case connected
to the mains, proceed as explained in section 7.14.
It is forbidden to tamper with the power lead and its plug. When replacing them
owing to damage and/or wear please contact an Authorised Service Centre.
A proper earth connection is compulsory. Should it temporarily be necessary to
use an extension lead the latter must comply with the standards in force in the
country of use.
Since models DM1 and DM1G are
particularly heavy and bulky they must
be set down on the ground or on a low
top of appropriate load-bearing strength
parallel to the ground.
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6.5
STARTING UP THE EQUIPMENT
Figure 3
Fig. 3 : Position the equipment correctly in the
designated area, observing the instructions in
paragraphs 6.3 and 6.3.1.
Connect the lead to the mains power
socket: follow the instructions in
section 6.4 carefully.
B
Figure 4
Fig. 4 : Open the oven door using the handle (B).
After placing the grooved plate and the refractory
supports (see diagram) inside the oven, insert the firing
cylinders and close the door properly.
Even when the DM oven is at ambient
temperature it is still advisable to use
protective gloves during handling.
6.4.1
Connecting up the aspiration unit (optional for DM 30-40-50, DM 4R)
Figure 1
Fig. 1 : Remove the bleeder from its seat and
connect up the aspirator using the screws
supplied with the aspirator itself.
Figure 2
Fig. 2 : Finally, insert the aspirator plug in the socket
on the rear panel of the oven base.
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Failure to observe any of the above equipment installation instructions may
lead to malfunctions and render the warranty null and void.
If the control panel is already on and there are four numbers on the
display (11) press the START-STOP key (20) immediately and the word
OFF will appear on the display (11).
6.6
PURPOSE OF THE EQUIPMENT / IMPROPER AND FORBIDDEN USE
The ovens of the DM series have been designed to effect the firing and/or fusion of lining
cylinders used in odontotechny.
Using the equipment for any purpose other than that described in this Manual
shall be considered improper and thus forbidden.
The equipment must not be used to fire materials that generate smoke (e.g.
waxes, resins, plastics etc.).
Improper use renders the Warranty null and void and Zhermack S.p.A. shall not
be liable for any damages to objects, workers or third parties.
The main reasons for which the Warranty may be rendered null and void are given in section
2.2 and in the "Warranty Certificate" enclosed with this Manual.
11
16
14
15
Figure 6
Fig. 6 : Press the main switch (16) positioned on the
display: the switch will light up.
• the word OFF appears on the display (11)
• the program number appears on the display (14)
• the number “1” appears on the display (15).
Figure 5
Fig. 5 : On DM 1 and DM 1G ovens act on the main
switch by turning the dial clockwise.
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Operator safety is guaranteed by automatic control and safety devices.
The above-cited safety systems control oven start/stop; in particular:
A. If, during a melting cycle, the operator opens the oven door, the latter will trip a
microswitch (F) positioned centrally beneath the aperture of the door itself.
Pressure on this pin automatically cuts electrical power to the elements, deactivating them.
• the word “Door” appears on the display (11).
• re-closure of the door results in restoration of the electricity supply powering the elements.
• real-time in-chamber temperature re-appears on the display (11).
B. Once the work cycle is complete remember to press START/STOP (20) so as to turn the
control panel off before switching off the oven via the main switch (16).
C. The oven is equipped with a safety system that provides protection should the set
temperature be exceeded.
If, between 500°C and 600°C, set temperature is exceeded by more than 100°C for at least one
minute the following occurs:
• the flashing legend “tEmP” appears on the display (11).
• an overheating warning buzzer sounds.
• the cycle in progress is automatically cancelled.
The above also happens if, beyond 600°C, the set temperature is exceeded by just 50°C for at
least one minute.
The equipment must not be used with any of its parts disassembled: before
using the equipment make sure that all its components are properly in place.
To ensure that work is done in absolute safety always make sure that you
follow the described procedures with caution.
7.1
WARNING
7.2
SAFETY SYSTEMS
CHAPTER 7: USING THE EQUIPMENT
To provide greater clarity the numbers given in the diagrams in the following
paragraphs correspond exactly to the numbering in Chapter 3 in the
"Equipment Description" section.
To ensure long-lasting oven performance it is advisable to avoid using it for
prolonged periods and at maximum temperature.
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TEMPERATURE RANGE
Should even just one of the control and safety devices fail to operate properly
proceed – as far as is possible – as described in section 9.2 and contact you
nearest Authorised Servicing Centre.
Pressing START/STOP (20) deactivates the alarm and the word “OFF” appears on the display
(11). It is advisable to run a check on the programmed data.
You can now re-start the interrupted program.
If, of course, the cause of the alarm is not removed the same problem will occur as soon as the
oven is put back in use.
D. If the thermocouple breaks the following occurs:
• the flashing legend “tEmP” appears on the display (11).
• an overheating warning buzzer sounds.
• the elements are switched off.
In this event the thermocouple must be changed.
OVEN SERIES: FROM 0°C TO 300°C FROM 301°C TO 600°C FROM 601°C TO 900°C
DM 30 with heating tubes 30 °C/min 25 °C/min 10 °C/min
DM 40 with heating tubes 30 °C/min 25 °C/min 8 °C/min
DM 50 with heating tubes 30 °C/min 25 °C/min 8 °C/min
DM 4 R 30 °C/min 25 °C/min 10 °C/min
DM 1 30 °C/min 25 °C/min 8 °C/min
DM 1 G 30 °C/min 25 °C/min 10 °C/min
7.3
DATA PROGRAMMING
A. The oven is OFF, as shown on the display (11).
The PHASE display (15) shows the number “1”.
B. Press PROG. SELECT. (12). The letter “P” appears on the display (11). Press key “1”.
The number “1” appears on the display (14).
C. Press PROG. (19).
The legend “Pro” appears on the display (11).
The green PROG. LED (27) starts flashing and continues to flash as long as the operator
remains in Data Programming mode.
7.2.1
Maximum temperature increase rate
To ensure that the oven cycle ends in accordance with the duration displayed at the end of
PHASE 5 during programming, the operator must observe the maximum in-oven temperature
increases (expressed in °C/MIN) shown in the table below:
7.3.1
Entering data into program n.1
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(Conclusion of data entry for each program is, nevertheless, shown on the display by the appearance
of the word “OFF”).
The number “2” appears on the PHASE display (15).
D. Press ENTER (28). On the control panel the following appears:
• the legend “tEmP” appears on the display (11) for one second.
• four numbers appear on the display (11) (these might even be 0000).
• the green STO-TEMP LED (24) come on.
• segment (2A) comes on.
Now enter the first temperature using the numerical keypad. Example: 250°C
Press keys 2 - 5 - 0.
E. Press ENTER (28) to save the temperature data. The following appears on the control panel:
• the green °C/min SLEW RATE LED (23) comes on.
The legend “rate” appears on the display (11) for one second. Now enter the increase rate
(in °C/min) that will be used to reach the just-set temperature. Do this via the numerical
keypad.
Example: 6°C/min. Press key number 6.
F. Press ENTER (28) to save the rate data. The following then appears on the control panel:
• the green HR-MIN/TIME LED (22) comes on.
• the horizontal green segment (2B) comes on.
A second “time” appears on the display (11). Now insert the holding time via the numerical
keypad. Example: 20 minutes. Press keys 2 and 0.
G. Press ENTER (28) to save the data. Doing this completes PHASE 2 and brings the
operator to PHASE 3. The following then appears on the control panel:
• the green STO-TEMP LED (24) comes on again.
• the legend “tEmP” appears on the display (11).
• the green oblique segment (3A) comes on.
• the number “3” appears on the PHASE display (15).
H. Program PHASES 3 and 4 according to the procedure used in PHASE 2 as described
above.
I. In PHASE 5, after inserting the parameters as per the previous phases, the aspiration fan
cut-out temperature can be programmed (see section 7.4) by pressing the ENTER key (28):
• the legend “Fan” 300 appears for a fraction of a second on the display (11) (Aspiration Fan).
• the legend “U” appears on the display (15).
L. Press ENTER (28):
• “t” appears on the display (15).
• the program duration, expressed in hours and minutes, appears on the display (11).
M. Press ENTER (28) for the last time to exit Data programming mode:
• the word OFF re-appears on the display (11).
To enter the data in the remaining programs, proceed as described in section 7.3.1 by keying
in the desired program number (0-9) during Program Selection (see 7.3.1, point B).
7.3.2
Entering data into remaining programmes
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The switched-on aspirator (optional) starts/stops automatically during oven operation /
shutdown. The operator can, nevertheless, program aspirator shutdown temperature during Data
Programming (see section 7.3.1 point I).
In fact, once the third parameter (holding time) of PHASE 5 has been entered press ENTER (28) to
save the data that will then be set.
The display (11) shows “FAn” 300.
The figure “300” indicates the temperature (in °C) at which the fan automatically stops working.
This data is entered by technicians at Zhermack S.p.A. during final oven testing. Should the
operator so desire, he/she may vary this setting between a minimum of 0°C and a maximum of
700°C.
As a guideline, this setting should not be any higher than 400°C because, while air flow from the
melting chamber is only minimal, it is good practice to prevent withdrawal of heat as this delays
attainment of high temperatures.
7.4
USING THE ASPIRATION UNIT
Programming of the fan shutdown temperature is only effected, of course,
where the oven has an aspirating flue.
As regards aspirator positioning and connection, observe the instructions in
sections 6.3 and 6.4.1. carefully.
7.4.1
Routine mode
To fire fast linings the suction unit needs to be set up in a special way.
When setting the program, after setting the 5 firing phases, the word “Fan” appears on the
display followed by 4 zeros. If, in this phase, a temperature higher than 700°C is set the word
“Fast” appears on the display to indicate operation of suction unit with fast linings. During
execution of the program, when the set temperature is reached and the material is inserted in
the oven, closing the door automatically activates the suction unit for about 30 minutes so as
eliminate any fumes that develop in the chamber.
The set temperature will nevertheless be guaranteed.
7.4.2
“Fast” mode
Delayed oven start must be programmed after the melting program has been set (see section
7.3).
A. With the oven OFF, press START-STOP (20). The word “tImE” appears on the display (11).
7.5
DELAYED START
The extraction fan comes on at the beginning of phase 2 and goes off when the power supply
to the oven is cut.
7.4.3
EXTRACTION FAN
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B. Press ENTER (28). The current day of the week appears on the display (11).
C. Key in the desired day (1: Monday, 2: Tuesday, 3: Wednesday, 4: Thursday, 5: Friday; 6:
Saturday, 7: Sunday).
• The relevant day appears on the display (11).
D. Press ENTER (28):
• for a fraction of a second the legend “hh.nn” appears on the display (11). This is followed
by the current time.
E. Program the time for the selected day by keying in the relevant numbers.
F. Press ENTER (28) to save the data:
• the oven start day remains on the display (11).
To check the start time press “HR.MIN” (10).
The two numbers on the left-hand side of the display (11) give the hour while
the two numbers to the right show the minutes.
If, for example, you wish to enter the time 08.30 key in 0 – 8 – 3 - 0 so that
the number 8 remains on the left-hand side of the display (11).
24 hours prior to the start of oven heating the start time appears on the
display (11). 1 hour before heating a flashing countdown of the remaining
minutes appears on the display (11).
If a delay time of less than 24 hours is set the heating start time is shown on
the display (11).
There are two different ways of starting the oven:
A. With the oven OFF, press START-STOP (20). The legend “tImE” appears on the display (11).
• Press ENTER (28). The current day of the week appears on the display (11).
• Press ENTER (28). The “hh.nn” legend appears on the display (11) for a fraction of a
second followed by the current time.
• Press ENTER (28) and the oven will start working.
B. With the oven OFF, press PHASE (13). The legend “F” appears on the display (15).
Press START-STOP (20) and the oven starts working.
To modify the clock from daylight saving time to summer time and vice versa proceed as follows:
• with the oven OFF press the HR-MIN key (10).
• the legend “tImE” appears on the display (11).
• press ENTER (28). The display (11) shows SOL (= daylight saving time) or LEG (= summer
time).
• press PROG. (19) to change the time.
• press ENTER (28): for a fraction of a second the “hh.nn” legend appears on the display (11),
followed immediately by the current time.
• press ENTER (28) and the oven returns to OFF mode.
7.6
IMMEDIATE START
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DM series ovens provide users with cycles having up to 8 work phases. This is made possible by
uniting programs 8 and 9.
Proceed as follows:
A. With the oven OFF press key 9.
• the display (11) shows: “8 9 normal functions” or “8 9 combined 8-phase mode”.
If the display (11) shows 8 9, press the PROG key or key 9 again.
• 8 – 9. appears on the display (11).
• press ENTER to save.
B. Now set program 8.
After setting the holding time in phase 5 of program 8 the oven automatically goes to phase
2 of program 9.
C. Now set the data for program 9.
D. After setting the fan shutdown temperature and confirming the data by pressing ENTER,
the duration of the combined program appears on the display (11).
E. Press ENTER again:
• OFF appears on display (11)
• 9 appears on display (14)
• 1 appears on display (15).
F. Now recall program 8 by proceeding as follows:
• press the PROG. SELECT. key (12).
• “P” appears on display (14).
• press key “8” on the numerical keypad.
If you wish to return program 8 to its standard 4-phase operating mode, proceed as follows:
• with the oven OFF, press key 9.
• 8 - 9 appears on the display (11).
• press key 9 again or press PROG.
• 8 9 appears on the display (11).
• press ENTER.
7.7
CREATING AN 8-PHASE WORK CYCLE
To recall the desired program proceed as follows:
A. With the oven OFF press PROG. SELECT (12). The letter “P” appears on the display (14).
B. Press the number (0 - 9) relevant to the program you wish to enter.
7.8
CHOOSING A PROGRAM
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After entering all the necessary data, the operator can render the set melting programs
operative by proceeding as follows:
A. Carry out the operations described in paragraph 7.3.
B. Press START-STOP (20). Set the oven start time to begin melting operations.
C. Where the delayed start function is used the control panel displays the following:
• the yellow WAIT LED (6) comes on.
• the horizontal green segment (1) comes on.
• the set day or time appears on display (11).
• the activated program number is visible on display (14).
• the number 1 appears on display (15).
• the green HR.MIN/TIME LED (22) comes on.
If, instead, the delayed start function is not in use the control panel simultaneously displays
the following:
• the green WORK LED (7) comes on.
• a green oblique segment comes on (2.A, 3.A, 4.A or 5.A) as a function of the first work
phase setting.
• the in-chamber temperature, expressed in °C, appears on the display (11).
• the number of the program in use appears on the display (14).
• the number of the phase corresponding to the illuminated green oblique segment
appears on the display (15).
• the yellow TEMP LED (25) comes on.
• the yellow _-_-_-_- LED (26) flashes every time the in-chamber heating elements are
powered. A brief acoustic signal accompanies the above legend.
D. When the oven starts heating the temperature increase is shown on the display (11).
E. Once the first temperature level is reached the holding (temperature stabilisation) time
begins. The display simultaneously shows the following:
• the green horizontal segment comes on as a function of the set work phase.
• the yellow LED _-_-_-_ (26) keeps on flashing.
Once the set holding time has expired, a brief acoustic signal informs the operator that the
work phase has ended and that the next one is beginning.
F. The oven will then repeat the above-described sequence until the last temperature is
reached and the relative stabilisation time (PHASE 5) is over. Once this last holding time
has expired a buzzer sounds for 30 seconds to inform the operator that the program has
ended, after which, however, final temperature is maintained. The technician can thus
decide on the most appropriate moment in which to carry out fusion tasks.
G. Once fusion operations are over proceed as follows:
• press START-STOP (20): the word OFF appears on the display (11).
• press the main switch (16) and the oven is switched off.
7.9
OPERATION: GENERAL NOTES
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It may be necessary to fire more than one cylinder containing the same or different linings
simultaneously, but at different temperatures (e.g. 3 C & B resin cylinders at 700°C, 2 ceramic
alloys cylinders at 850°C).
In this situation, we believe that the best way to proceed is to enter the melting data by
occupying two programs. Example:
The above-described data is purely indicative and does not refer to any particular fusion lining
available on the market. The numbers of phases used in Program n°1 may also vary
depending on technical needs.
The above is simply designed to illustrate a method that is both possible and at the same time
secure, simple and extremely practical.
The validity of this system lies in the fact that, after the 30-second buzzer informs the operator
of the end of Phase 5/Program n°1, the in-chamber temperature of 700°C is stabilised until
fusion operations for the first 3 C & B resin alloy cylinders are complete.
Afterwards, to exit Program n°1 and start Program n°2 to raise the temperature to 850°C,
proceed as follows:
A. press START-STOP (20); OFF reappears on the display (11).
B. press PROG. SELECT. (12); “P” appears on the display (14).
C. press n°2 on the numerical keypad; the number 2 appears on the display (14).
D. press PHASE; F appears on the display (15).
E. press n°2 on the numerical keypad; the number 2 appears on the display (15).
F. press START-STOP (20) again and the oven will immediately recommence working and
proceed towards 850°C.
7.10
NOTES ON LINING FUSION SYSTEM
PROGRAM N°. 1
TEMPERATURE INCREASE RATE HOLDING TIME
Phase 2 • • •
Phase 3 • • •
Phase 4 250 °C 6 °C/min 20 minutes
Phase 5 700 °C 10 °C/min 30 minutes
•
Completely data-free.
PROGRAM N°. 2
TEMPERATURE INCREASE RATE HOLDING TIME
Phase 2 • • •
Phase 3 • • •
Phase 4 • • •
Phase 5 850 °C 10 °C/min 1 hour
•
Completely data-free.
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If for some reason the operator decides to change the data once the program has already been
launched, he/she must proceed as follows:
A. Press START-STOP (20): the word OFF appears on the display (11).
B. Press PROG. (19): the legend “Pro” appears on the display (11).
C. Press ENTER and the following occurs on the control panel:
• the green horizontal segment of the recalled phase comes on.
• the first of the three parameters (i.e. temperature) (11) appears.
• the number of the recalled phase appears on the display (15).
• the green PROG. LED (27) flashes.
D. Change/cancel one or more of the phase data items.
E. Save all changes by pressing ENTER.
F. Press START/STOP (20) to return to the display (11): F appears.
Key in the number of the phase from which you wish to begin.
G. Press START/STOP (20).
7.11
CORRECTING DATA ON A PROGRAM THAT IS RUNNING
If an undesired program is launched by mistake, proceed as follows:
A. Press START-STOP (20): OFF reappears on the display (11).
B. Press SELECT./PROG. (12): “P” appears on the display (14).
C. Press the correct program key: the corresponding number appears on the display (14).
D. Set the oven start time as described in Chapter 4 “Programming Oven Start Time”.
7.12
CHANGING THE PROGRAM IN PROGRESS
Several checks can be run while the oven is working:
A. During phase 1 / Delayed start on
1. Pressing TEMP. (17) on the display (11) causes the current in-chamber temperature to
appear.
• after a few seconds the display returns to its previous state.
7.13
CHECKS DURING WORK
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A. During Phase 1 of delayed start
If there is a mains power failure while the delayed start feature is functioning the buffer battery
immediately comes on line so as to power the clock and thus prevent any postponement of
operation.
The oven will, of course, only be able to come on and operate at the set time if, in the
meantime, mains power has been restored.
If, instead, the timer comes to the end of its countdown and the mains power is still out, the
oven will go to standby and begin the work cycle as soon as the mains power comes back
on.
B. During temperature increase in phases 2, 3, 4, 5.
If there is a mains power failure while the oven is working and heating in any of the four work
phases the oven will recommence work starting from the work phase that was reached at the
time of the power failure.
The oven will heat up to compensate for the drop in temperature that occurred during the
blackout and will then run through the rest of its cycle.
C. During the holding time in work phases 2, 3, 4, 5
If the power failure occurs during temperature stabilisation the following will occur once the
power is restored:
1. if the power blackout has been brief and the melting chamber has not lost heat the oven
will immediately start re-running the entire holding time.
2. if, instead, in-chamber temperature has dropped with respect to the setting the oven will
reheat back to that temperature and then re-run the entire holding time.
B. During temperature increase in phases 2/3/4/5 (oblique green segment illuminated)
1. Pressing the red “°C” key (8) on the display (11) causes the temperature setting for the
phase in progress at the time of checking to be displayed.
• after a few seconds the display returns to its previous state.
2. Pressing the red “°C/MIN” key (9) on the display (11) causes the temperature slew rate
(expressed in °C/min) for the phase in progress at the time of checking to be displayed.
• after a few seconds the display returns to its previous state.
3. Pressing the red “HR.MIN” key (10) on the display (11) causes the holding
(temperature stabilisation) time for the phase in progress at the time of checking to be
displayed.
• after a few seconds the display returns to its previous state.
C. During the holding time in work phases 2/3/4/5 (horizontal green segment illuminated)
1. Pressing the two red keys (8) and (9) causes that which is described in points B./1.2.
to
occur.
2. Pressing the red “HR.MIN” key (10) shows the hours and/or minutes remaining before
the end of the current holding time.
7.14
NO ELECTRICAL POWER
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The programming mode for the DM 4R oven is exactly the same as on the DM oven.
7.15
PROGRAMMING MODE FOR DM 4R OVENS
P
O
N
Figure 7
Fig. 7 : Make sure that the switch (P) to the right of
the panel is turned downwards to position 0. This
ensures that when the oven goes to Phase 2, the pan
(N) starts turning and the red LED (O) comes on.
Figure 8
Fig. 8 : When the door is opened the pan stops. To
bring it into the desired position act on the ENTER
k e y .
7.16
RESIDUAL RISK
Residual risk is:
• a danger that cannot be completely eliminated through design and application of safety
devices.
• a potential danger which cannot be highlighted.
DM series ovens reach very high temperatures and thus allow specific odontotechny materials
to be fired; the residual risks thus consist of:
• accidental contact (and/or caused by a safety system fault) with the materials or the equipment
itself, during and after the melting phase (risk of serious burns to limbs).
• inhalation of fumes or combustion gas caused by backflow from an incorrectly positioned
aspiration tube.
• work carried out on the equipment interior by unauthorised personnel.
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The above-mentioned dangers are indicated by special labels attached to the equipment, as
described in sub-section 3.7.1.
The DM series oven is a equipment that could potentially cause an explosion or
fire where users fails to observe the instructions given in this manual.
Should you have any doubts or queries please do not hesitate to get in touch
with the Manufacturer or an Authorised Servicing Centre.
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CHAPTER 8: MAINTENANCE
8.1
CLEANING
The equipment exterior can normally be kept clean just by wiping it with a dry cloth.
If necessary, wet the cloth just a little water or use a non-degreasing detergent.
The operator must ensure that the equipment is kept clean and free from any foreign bodies
such as dirt, water, non-conducting liquids etc.
The equipment must be cleaned at the end of every work session to remove all residues.
Cleaning must be done with the equipment at standstill and positioned in a stable manner.
8.2
ROUTINE MAINTENANCE
Once the equipment has been cleaned (see section 8.1) the operator must check for worn,
damaged or loose parts. If any such anomalies are discovered contact your Authorised
Servicing Centre.
Never use inflammable, corrosive, alkaline or toxic liquids when cleaning the
equipment.
Eye goggles and a face mask must be worn when using compressed air for
cleaning purposes. Do not allow any persons near the equipment as they could
be hit by flying dust.
Before cleaning the equipment exterior always turn the main switch to OFF. It is
strictly forbidden to clean the equipment while it is connected to the mains
power supply.
Should any of the above anomalies be discovered it is strictly forbidden to
restart the equipment before such faults have been set right.
Never use a naked flame to see what you are doing during checks or maintenance
operations.
More precisely, should the operator note any defects or problems of any kind whatsoever he/she
must place a warning sign on the equipment indicating that maintenance work is in progress and
that using the equipment is forbidden (EC-compliant signs can be purchased from the relevant
suppliers).
Routine maintenance, cleaning and proper equipment use are essential factors in guaranteeing
long-lasting equipment performance and safety.
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Equipment safety devices/guards must never be removed except for repair and
maintenance purposes.
Such items must be replaced as soon as the situation which led to their removal
no longer exists and in any case before the equipment is used again.
8.3
UNSCHEDULED MAINTENANCE
Modifications which alter the equipment characteristics from a safety and
risk prevention viewpoint may only be made by the Manufacturer who shall
then issue a certificate stating that the equipment conforms to safety standards.
Therefore any modification or maintenance tasks not actually described in
this manual are to be considered forbidden. If the equipment is modified,
tampered with or repaired by unauthorised personnel or non-original spare
parts are used the manufacturer is relieved of all responsibility. If a maintenance
task is required but is not described in this manual you must contact an
Authorised Servicing Centre.
All electrical and mechanical work must only be carried out by an authorised
Zhermack S.p.A. maintenance technician.
8.4
RESTARTING AFTER A LONG PERIOD OF INACTIVITY
Should the equipment be used after remaining idle for a long period proceed as described in
Chap. 6 (start-up) and, if necessary, re-enter the data as described in Chap. 7.
If there are any faults or malfunctions proceed as described in Chapter 9 (Troubleshooting). If the
problem persists or is not covered by the information in this chapter contact your Authorised
Servicing Centre immediately.
8.5
REQUESTING TECHNICAL ASSISTANCE
To obtain technical assistance choose one of the following options:
1. contact your Authorised Servicing Centre.
2. telephone the Zhermack S.p.A. Customer Assistance Service on the number
+39 0425.597.611 and proceed as follows: give personal data (e.g. address and telephone n.),
state the information on the equipment ID plate (see paragraph 3.3) and explain the
problem clearly.
3. fax all the above information and a properly filled out ID Form (see Appendix 2) to
+39 0425.53.596.
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CAPITOLO 9: TROUBLESHOOTING
9.1
WARNING
9.2
PROBLEMS, CAUSES AND REMEDIES
Should any of the anomalies described below occur try setting the situation
right, as far as is permissible, by following the instructions contained in this
handbook. Should the problem persist contact your Authorised Servicing
Centre.
PROBLEM CAUSE REMEDY
After powering the
equipment via the
main switch the
on-key LED fails to
come on.
1. Plug is not connected to
the mains socket.
Power lead is damaged.
2. Fuse blown.
1. Connect the plug to the mains
socket properly.
Have the power lead replaced by
an Authorised Servicing Centre
only.
2. Change the fuse, using one of
identical characteristics. Contact an
Authorised Servicing Centre only.
Insufficient
aspiration of
combustion fumes
and gases.
1. Aspirating fan full of dust
or clogged.
1. Clean the aspiration fan or have
it changed. Contact an Authorised
Servicing Centre only.
Combustion fumes
or gas exits
aspiration fan flue
or the mobile hood.
1. Obstruction in the oven
aspiration fan flue or mobile
hood is clogged.
1. Clear any obstruction from flue.
The buzzer sounds
and the legend
“tEmP” flashes on
the display.
1. Temperature setting exceeded (see section 7.2 point
B.).
2. Thermocouple broken.
1. Reset the work cycle data.
2. Change the thermocouple.
Contact an Authorised Servicing
Centre only.
The legend “Door”
appears on the
display.
1. The door has accidentally
been opened.
1. Re-close the door.
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APPENDICES
A.1
CE DECLARATION OF CONFORMITY
A.2
WARRANTY CERTIFICATE AND IDENTIFICATION FORM
A.4
AUTHORIZED SERVICE PARTNERS
A.5
A.6
NOTES
CONTROL PANEL
A.3
MAINTENANCE AND REPAIR WORKSHEET
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A.1
DECLARATION OF CONFORMITY CE
The Manufacturer:
Zhermack S.p.A.
Via Bovazecchino, 100
%DGLD3ROHVLQH52,WDO\
7HO)D[
Declares that the equipment described below:
furnace DM30 , furnace DM40 , furnace DM50 ,
furnace DM 4R , furnace DM 1 , furnace DM 1G
Conforms to the legislative dispositions established in the following laws:
· EC Directive 2004/108 EC (EMC Directive) and subsequent amendments.
· EC Directive 2006/95 (Low Voltage Directive) and subsequent amendments.
3OHDVHQRWHWKDWPDQXIDFWXUHUҋVOLDELOLW\IRUGDPDJHVFDXVHGE\DGHIHFWLYHSURGXFWH[SLUHV
\HDUVIURPWKHGDWHLQZKLFKWKHPDQXIDFWXUHUSXWVXFKSURGXFWRQWKHPDUNHWDQGWKDWVXFK
OLDELOLW\LVWUDQVIHUUHGWRWKHXVHUDVVWDWHGLQ(&'LUHFWLYH
Badia Polesine, 16/01/2007 Tiziano Busin
Managing Director
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A.2
WARRANTY CERTIFICATE AND IDENTIFICATION FORM
1. This document certifies that the Manufacturer has built the product correctly using only top quality materials,
carried out all the necessary tests and that the product complies with EC directives. This product Warranty is valid
for 12-months as from date of delivery to the customer. Proof of such date shall be provided by a purchase document
or the completed identification form. These documents must be handed over together with the equipment to the
Servicing Centre. Persons wishing to make use of warranty coverage must make the fault known within eight days
of its discovery as per Italian civil code art. 1495. Warranty cover is limited to replacement or repair of individual
components or pieces with manufacturing defects and does not cover costs related to transfer of technical
personnel, transport, packing etc. Breakdowns, faults or damages which derive from poor maintenance, incorrect
power supply, negligence, inexperience and other causes not imputable to the Manufacturer and parts subject to
normal wear are not covered by the Warranty. The Warranty does not cover breakdowns caused by failure to carry
out routine maintenance or customer negligence.
This Warranty does not provide for any awards for direct or indirect damages of any kind caused to persons or things
by any equipment inefficiency.
2. The Warranty is instantly rendered null and void if the equipment is repaired, modified or tampered with by the
purchaser or any unauthorised third parties.
Responsibility for damages caused by defective products expires 10 years after the Manufacturer puts them on the
market: after such time damages are the user's responsibility, as stated in EC Directive 85/374.
3. To have work carried out under Warranty the purchaser must only contact the retailer, the Manufacturer-authorised
servicing centres, or the Manufacturer.
The Warranty entitles the purchaser to free replacement of defective parts. It does not entitle the purchaser to
replacement of the entire equipment.
4. In the event of disputes over application of the Warranty, the quality or condition of the equipment, the purchaser
shall not suspend payment or delay payment of the price or price instalment.
5. The purchaser shall not be entitled to damages for any loss of production.
6. The Warranty is rendered null and void if:
a. the equipment is damaged by a fall, exposed to fire, spilt liquids, lightning, natural disaster or any other
cause not imputable to the Manufacturer.
b. installation has not been carried out properly.
c. power supply is incorrect (e.g. rated mains voltage incorrect). Erroneous mains connection (rated mains
voltage incorrect), or failure to install proper protection devices.
d. the serial number has been removed, cancelled out or altered.
7. Any components to be replaced under the terms of the Warranty shall be sent back to Zhermack S.p.A. which
shall then send the appropriate spare parts. Should the changed part not be replaced it shall be charged to the
person who ordered it.
8. The Manufacturer and the Dental Deposit are not required to provide replacement equipments while repairs are
carried out.
9. Spare parts shall, for tax purposes, only be provided under warranty where the relevant limitations set out in the
terms and conditions of the warranty are observed.
10.For any other eventuality not provided for by this Warranty Certificate and the regulations consult the Italian Civil
Code.
11.Labour, travel and call-out invoices must be paid for on their receipt.
12.The manufacturer and the dealer shall comply with all data processing laws, including proper observance of data
security standards in compliance with the specifications given in the data processing information sheet.
ID E N T I FI C AT I O N F O R M
EQUIPMENT MODEL:
................................................................................
EQUIPMENT SERIAL NUMBER:
................................................................................
P
URCHASER:
................................................................................
ADDRESS:
................................................................................
T
OWN / POSTCODE:
................................................................................
TEL:
................................................................................
T
AX CODE / VAT NUMBER RETAILER:
................................................................................
RETAILER:
................................................................................
P
URCHASER’S SIGNATURE:
................................................................................
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A.3
MAINTENANCE AND REPAIR WORKSHEET
DATE
D
ESCRIPTION OF WORK
S
IGNATURE
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A.4
AUTHORIZED SERVICE PARTNERS
A.5
NOTES
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Please visit the page:
http://www.zhermack.com/Technical/Equipment/Authorized_service_partners.kl
to check all the updated telephone numbers and addresses of the Authorized service partners.
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A.6
CONTROL PANEL
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Rev. /
www.tecnomedia.biz
Italy
Zhermack S.p.A. - Via Bovazecchino, 100
45021 Badia Polesine (Rovigo)
Tel. +39 0425 597 611 - www.zhermack.com
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