furnace DE
User Manual
Preheating furnaces
IT
FR
ES
DE
EN
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GENERAL INDEX
CH. 1
INTRODUCTION
Pag. 117 1.1 How to read and use the manual
Pag. 118 1.2 Terminology and symbols
CH. 2
GENERAL INFORMATIONS
Pag. 119 2.1 Responsibility
Pag. 119 2.2 Warranty: general instruction
Pag. 119 2.3 Authorized personnel
Pag. 120 2.4 General safety regulations
CH. 3
DESCRIPTION OF THE EQUIPMENT
Pag. 122 3.1 General description of the equipment
Pag. 122 3.2 Table of the components
Pag. 122 3.2.1 Description of the components
Pag. 123 3.3 Control panel
Pag. 123 3.3.1 Description of control panel components
Pag. 124 3.4 Entering data
Pag. 124 3.5 Identification data
Pag. 125 3.5.1 On-equipment labels and symbols
CH. 4
TECHNICAL CHARACTERISTICS
Pag. 126 4.1 Technical characteristics and operating start
Pag. 126 4.1.1 Technical Data
Pag. 127 4.1.2 Standard accessories and accessories available on request
Pag. 127 4.2 Temperature tolerances
Pag. 127 4.3 The slew maximum
CH. 5
TRANSPORT AND MOUNTING
Pag. 128 5.1 Warning
Pag. 128 5.2 Packing and unpacking
Pag. 129 5.3 Transport and mounting
Pag. 130 5.4 Elimination / Dismantling
CH. 6
INSTALLATION AND FIRST-TIME USE
Pag. 131 6.1 Warnings and precautions
Pag. 131 6.2 Permitted ambient conditions
Pag. 131 6.3 Required work space
Pag. 132 6.3.1 Worktops
Pag. 133 6.4 Connecting up to the power supply
Pag. 133 6.5 Starting up the equipment
Pag. 134 6.6 Purpose of the equipment
Pag. 135 6.7 Improper and forbidden use
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CH. 8
MAINTENANCE
Pag. 142 8.1 Cleaning
Pag. 142 8.2 Routine maintenance
Pag. 143 8.3 Unscheduled maintenance
Pag. 143 8.4 Restarting after a long period of inactivity
Pag. 143 8.5 Requesting technical assistance
CH. 9
TROUBLESHOOTING
Pag. 144 9.1 Warning
Pag. 144 9.2 Problems, causes and remedies
APPENDICES
Pag. 147 A.1 CE Declaration of conformity
Pag. 148 A.2 Warranty certificate and identification form
Pag. 149 A.3 Maintenance and repair worksheet
Pag. 150 A.4 Authorized service partners
Pag. 150 A.5 Notes
The data given in this manual may be modified without prior notice.
CH. 7
USING THE EQUIPMENT
Pag. 136 7.1 Warning
Pag. 136 7.2 Safety system
Pag. 137 7.2.1 Maximum temperature increase rate
Pag. 137 7.3 Data programming
Pag. 138 7.3.1 Immediate start
Pag. 139 7.3.2 Delayed start
Pag. 139 7.4 Correcting data
Pag. 140 7.5 Operating start
Pag. 140 7.6 Checks during work
Pag. 141 7.7 No electrical power
Pag. 141 7.8 Residual risk
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CHAPTER 1: INTRODUCTION
This Use and Maintenance Manual provides information on the utilisation, installation
and maintenance of the DE series ovens (versions furnace DE1, furnace DE2, furnace DE3),
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.
1.1
HOW TO READ AND USE THE MANUAL
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1.2
TERMINOLOGY AND SYMBOLS
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.
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 equipment: 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
45021 Badia Polesine • RO • Italy
Tel. +39 0425 597 611 • Fax +39 0425 53 596
http://www.zhermack.com e-mail: info@zhermack.com
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:
• Improper equipment use.
• Incorrect installation.
• Serious negligence of maintenance schedules.
• Modifications to or work on the equipment which has not been authorised by the Manufacturer
(especially on safety devices).
• Use of non-original spare parts.
Zhermack S.p.A. cannot, as of this moment, be held liable if the equipment is
modified or tampered with without prior written consent from the Manufacturer.
Consequently, any repairs made by unauthorised personnel, use of non-original
spare parts or failure to comply with the installation standards specified in this
manual shall immediately render the Warranty null and void.
2.3
AUTHORIZED PERSONNEL
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Before using this equipment or carrying out any work on it, the operator must
read the entire contents of this manual. This manual has been drawn up to
provide the user with essential information on rational, safe utilisation of the
equipment. The user must comply with the information given at all times.
Furthermore, the user must use the work sheets enclosed with this manual so
as to keep a record of maintenance/component replacement work as well as
make notes on any equipment malfunctions.
The operator-user must only use the equipment when it is fully assembled and
the safety devices are working properly as described in this manual.
• 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
at all times: doing so will ensure safe, long-lasting equipment 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:
• The oven must only be used at the rated voltage indicated on the oven ID plate.
• Do not allow untrained personnel to use this equipment.
• Persons using the equipment must wear protective goggles, pincers and gloves.
• The cylinders must be introduced and removed from the preheating chamber using suitable
pincers.
• The door must only be opened by way of the handle: this is made of special insulating
material to prevent burns.
• The oven must be installed in a protected area (see section 6.3), using guards equipped with
systems that allow only frontal access (gates, shutters etc.).
• The oven must be positioned on non-flammable supports and tops only; no highly flammable
materials, whether solid, liquid or gaseous, may be stored or used in the vicinity of the oven.
• The equipment must remain fully protected both during heating and for at least six hours after
it has been switched off.
• An info plate reading “WARNING: HOT PARTS” must be placed by the equipment (see
section 3.5.1).
• Take measures to ensure that you are not distracted when using the equipment.
• Never use a malfunctioning equipment and always inform the Maintenance Manager of any
faults.
• Extractor fans connected to an outdoor outflow pipe must be used when mixtures using
solvents harmful to operators’ health are used.
• Do not open compartments containing electrical parts.
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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.
• 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
CHAPTER 3: DESCRIPTION OF THE EQUIPMENT
F
U
S
E
F
U
S
E
Zhermack S.p.A.
BADIA POLESINE - ITALY
A
D
C
H
E
I
G
F
B
A. Ceramic air bleeder
B. Door open/close handle
C. Magnetic closure
D. Control panel (see section 3.3)
E. Main switch
F. Door microswitch
G. Oven chamber door
H. Power lead
I. Fuses
The DE series ovens ( versions DE 1, DE 2, DE 3) have been designed to fire and/or melt the
lining cylinders used in odontotechny.
The DE series ovens allow the user to program a 2-stage work cycle in which each stage
consists of three parameters:
- temperature.
- temperature increase rate.
- stabilisation time.
3.2.1
Description of the components
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3.3
CONTROL PANEL
4
6
7
1
2
3
5
8
1. Data display
2. led HEATING Shows, on display, that element is on
3. led CYCLE Three-colour LED to indicate that the following stages are in progress as follows:
- green: delayed start.
- yellow: controlled-gradient temperature increase.
- orange: stabilisation.
4. led PROG. Programming LED
5. key CYCLE Oven start programming key
6. key PROG. Access to programmes key
7. key + To increase data settings
8. key _ To decrease data settings
3.3.1
Description of control panel components
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3.4
ENTERING DATA
3.5
IDENTIFICATION DATA
• Programmed start.
The oven can be programmed to come on at a set time even when no members of personnel
are in the laboratory ( see paragraph 7.3.1 ).
The time interval is expressed in:
- hours ( 0:99 )
- minutes ( 0:59 ).,
with a resolution of 1 minute.
Use of the delayed start feature is not, of course, necessary for proper oven operation.
• Entering temperature data.
Temperature, expressed in degrees centigrade (°C) may vary within the following range:
- minimum (room temperature)
- maximum (1,100°C).
• Entering data for fast temperature increase rate.
The temperature increase rate, expressed in degrees centigrade (°C) per minute may vary
within the following range:
- minimum (1°C per minute)
- maximum (30°C per minute).
• Entering data for a inter-stage “holding” time.
An inter-stage holding time, lasting anything between 1 minute and 21 hours, can be set.
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
C305315 - DE 1
Matr. 00000000
230 V~ 50/60 Hz 1700W
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.
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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.
3.5.1
On-equipment labels and symbols
The following symbols are applied on the equipment:
WARNING! HOT PARTS. EXTREME DANGER.
USE PINCERS, EYE GOGGLES AND HEAT-INSULATED GLOVES.
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