Medite TES Valida User manual

User Manual TES Valida™
Thermal Unit
Manufacturer Medite GmbH
and Publisher: Wollenweberstr. 12
31303 Burgdorf
Germany
Read manual closely before putting device
into operation • Keep manual accessible
with device • Contact customer service in
case of questions • Specifications are
subject to change without prior notice
Rev. 04 (12/2013)

User Manual Thermal Unit TES Valida
Page 2 Rev. 04(12/2013)
Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
Certificate of Conformity
Type of instrument:
Thermal Unit –Tissue Embedding System
Model:
TES Valida™
Serial No.:
We do hereby certify that the above mentioned product meets the requirements set forth in the CE
Directives indicated below including all changes and addendums to date thereto. The above mentioned
product has been controlled and meets the following directives and standards:
Directive 98/79/EWG In Vitro Diagnostic
Directive 2004/108/EWG EMC
Directive 2006/95/EWG Low Voltage
The following harmonized standards were applied:
EN 61010-1:2001, EN 61010-2-010:2003, EN 61010-2-101:2002
Safety requirements for electrical equipment for measurement, control, and laboratory use –
Part 1: General requirements.
Part 2-010: Particular requirements for laboratory equipment for the heating of materials.
Part 2-101: Particular requirements for in vitro diagnostic (IVD) medical equipment.
EN 61326-1:2006
Electrical equipment for measurement, control and laboratory use - EMC requirements -
Part 1: General requirements.
In addition, the following in-house standards were applied:
DIN EN ISO 9001:2000
Quality management systems - Requirements.
Burgdorf, 10.12.2013 Michael Ott –Managing Director
figure 1
figure 2

User Manual Thermal Unit TES Valida
Page 3 Rev. 04(12/2013)
Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
Table of Content
1 Introduction
1.1 Manufacturer’s Information on this Manual 5
1.2 Important Information
1.2.1 About this Manual 6
1.2.2 Used symbols and their meanings 6
1.3 Intended Use 6
1.4 Authorized Operators 6
2 Safety
2.1 Transport 7
2.2 Installation 7
2.2 Working with the TES Valida™ Thermal Unit 7
3 Components of the TES Valida™Thermal Unit
3.1 Front and Work Area 8
3.2 Rear Side 9
3.3 Technical Data 9
3.4 Environmental Conditions 10
3.5 Scope of Delivery 10
4 Transport and Installation
4.1 Transport and Unpacking 11
4.2 Installation 11
5 Operation
5.1 Switching the unit on 12
5.2 Switching the unit off 12
5.3 Temperature Circuits 12
5.4 Temperature Controller Elements
5.4.1 Clock Key with Light 13
5.4.2 Digital Display 13
5.4.3 Heat Warning Light 13
5.4.4 Time Setting Key 14
5.4.5 Set Key 14
5.4.6 Down Key 14
5.4.7 Up Key 14
5.4.8 Power Key 14
5.5 Time settings
5.5.1 Set Real Time 15
5.5.2 Set Weekly Timer 15

User Manual Thermal Unit TES Valida
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Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
6 Failure, Errors and other Problems
6.1 Change of Fuses 17
6.2 Error messages 17
7 Cleaning, Maintenance and Recycling
7.1 Cleaning 18
7.2 Maintenance 18
7.3 Recycling 18
8 Care Declaration 19
9 Maintenance Schedule 20
10 Table of Figures 21

User Manual Thermal Unit TES Valida
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Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
1 Introduction
1.1 Manufacturer’s Information on this Manual
By purchasing the product Thermal Unit –Tissue Embedding System TES Valida™, you (in the
following: customer) got a quality product of Medite GmbH (in the following: Medite®). This manual
provides all information that are necessary for usage in a technical correct manner. The customer
ensures to read the manual intently and to follow all applying advice to guarantee correct usage of the
device.
All information stated in this manual are consistent with the current state of science and technique at
the time of purchase of the device. Medite® is not committed to update the manual regularly. No
subsequent delivery by default will be effected.
Details, sketches, technical drawings etc. concerning the actual product features may vary. The actual
product features are specified within the terms of the purchase contract between Medite® and the
customer.
The liability of Medite® for mistakes concerning details, sketches, technical drawings etc. stated in
this manual is excluded within the frameworks of the respective national legal orders. This affects
especially all financial losses and secondary failures that come about because or in regard of the
stated information in this manual.
Medite® is certified according to the Quality Management Standard DIN EN ISO 9001 and has the
aspiration of continuous improvement. On that account, Medite® reserves the right to change
technical details and processes without prior notice.
The documentation described in this manual is subject to copyright. All rights to this documentation,
the stated details, technical drawings, sketches, etc. belong to Medite®, if not stated otherwise. For
any duplication, an explicit written agreement of Medite® needs to be issued previously.
Medite GmbH
Wollenweberstr. 12
31303 Burgdorf
Germany
Phone [phone]
Fax [phone]
www.medite.de
[email protected]
© Copyright: This document is not to be copied, duplicated or processed on electronic storage media
without prior written agreement of Medite®.

User Manual Thermal Unit TES Valida
Page 6 Rev. 04(12/2013)
Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
1.2 Important Information
1.2.1 About this Manual
This manual shall help you handling the device. Please read the manual completely and follow the
advice. Acquaint yourself to the control elements and their functionality by studying the figures. This
way, an adequate use of the device is ensured.
The device present is offered with two different power supply variations. Please check the tool
identification plate to make sure that the device’s power supply matches your local power supply.
Different power supply variations mean no difference in handling and functionality of the device.
1.2.2 Used symbols and their meanings
Digits (1)
1.3 Intended Use
The TES Valida™is made for the purpose of embedding tissue specimens in histology and pathology
laboratories. Processing of food is not permissible.
The conditions for operation, maintenance and service mentioned in this instruction manual have to be
strictly observed.
1.4 Authorized Operators
The TES Valida™must be used only by those persons who have been authorized by the owner. In his
working area, the operator is responsible with regard to third persons. The owner must give the
operator access to this instruction manual and make sure that the operator has read and understood
its contents.
Danger warning: Danger warnings are marked by a red framed triangle.
Warning: Warnings are marked with a yellow warning triangle.
Notice: Notices, meaning important information for the user, that are not classified as
danger or warning, are marked with an information symbol.
Digits in brackets refer to item numbers in figures.
Heat warning: Heat warnings identify parts and situations of the device with high
temperatures.

User Manual Thermal Unit TES Valida
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Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
2 Safety
2.1 Transport
When moving the TES Valida™ Thermal Unit, please carefully consider the following directions for
safety of the device and user.
2.2 Installation
The TES Valida™Thermal Unit must be placed on an even and solid basis. A falling down instrument
means danger of accident.
2.3 Working with the TES Valida™ Thermal Unit
Unauthorized changes and technical modifications of the instruments are not permitted
for safety reasons. For the exchange of defective parts, only original Medite® spare
parts are to be used.
Any failure to comply with the approved technical regulations for the operation of
technical equipment or any non-intended use of the instrument will void the
manufacturer’s liability.
Use the device only with the allowed power supply.
Do not use the device in explosion-risk areas.
Safety devices on device and accessories are not to be removed or modified.
Do not place the device with its back directly to a wall. Arrange for a safety
distance of minimum 10 cm.
When working with the TES Valida™ Thermal Unit, take personal safety measures.
Caution! Parts of the Thermal Unit can reach high temperatures.
This pictogram of arrows indicates which side is up on the packed device. Always
move, handle and store so that the arrows point up. Rolling, folding, hard tilting as well
as other forms of handling need to be avoided.
This pictogram indicates that the packed device is to be proteced from moisture. It
needs to be covered when stored and moved.
When working with the TES Valida™, only use Paraffin without DMSO!

User Manual Thermal Unit TES Valida
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Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
3 Components of the TES Valida™Thermal Unit
3.1 Front and Work Area
(3)
(4)
(1)
(1) Touch Screen Controller
with digital display
(2) Lid for warming tray
(3) Warming tray
(4) Prewarming Chamber
(2)
figure 3
figure 4
figure 5

User Manual Thermal Unit TES Valida
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Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
3.2 Rear Side
3.3 Technical Data
Dimensions (L/W/H) in mm Other
Thermal Unit 360 x 600 x 340 Weight 20 kg
Prewarming Chamber 300 x 210 x 115 Protection Type IP 20
Inner Warming Tray 290 x 235 x 45
Outer Warming Tray 310 x 270 x 48 Model 115V
Power Supply 115V / 60Hz / 750VA
Temperature Fuse T6.3A
Prewarming Chamber 30 °C –70 °C
Warming Tray 30 °C –75 °C Model 230V
Power Supply 230V / 50Hz / 750VA
Fuse T3.15A
(1)
(1) Main switch (O –OFF / I –ON)
(2) Connection socket for main cable with safety switch
(2)
figure 6
Please check the type plate for power supply and fuse! The values need to match your
local conditions (power supply).

User Manual Thermal Unit TES Valida
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Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
3.4 Environmental Conditions
The acceptable environmental conditions for the use of the device are stated hereinafter. It is not
permitted to use the device if the environmental conditions are different.
- Use the device in interiors
- Height above sea level up to 2000 m
- Environmental temperature between 5 °C and 40 °C
- Maximum relative humidity 80% at temperatures of up to 31 °C, linear decreasing down to 50%
relative humidity at 40 °C
- Contamination level 2
- Overvoltage category II
Regarding storage of the device, environmental temperatures from 5 °C to 50 °C are permitted.
3.5 Scope of Delivery
The standard scope of delivery contains
- one device
- one power cord
- one instruction manual.

User Manual Thermal Unit TES Valida
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Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
4 Transport and Installation
4.1 Transport and Unpacking
The TES Valida™ Thermal Unit is delivered in a safety board. Move it only vertical and avoid galvanic
movements.
Place the device on a stable, smooth surface and remove safety board and protection film. Keep the
packing materials stored in case of a later transport.
Check the delivery for correctness and completeness. In case of missing or wrong equipment, please
contact your Medite® Sales Person.
4.2 Installation
Before starting the instrument, please make sure that your mains voltage corresponds to the value
indicated on the instrument.
The instrument is supplied ready to use. For connection to mains the included power cord for heating
instruments must be used. It must be connected to a socket with intact ground wire.
The minimum distance of the instrument back to the wall or other instruments should
be at least 10 cm to guarantee a sufficient ventilation.
Do not place any inflammable or combustible material near the instrument.

User Manual Thermal Unit TES Valida
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Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
5 Operation
5.1 Switching the unit on
Press the mains switch on the rear of the instrument. The unit is now in standby mode, which is
indicated by the word OFF in the display.
Press the Power Key (figure 7 (8)) at the controller to activate the Thermal Unit. The unit is now in
default, where it shows the current temperature settings of both circuits. The temperature of the pre-
warming chamber is indicated by an upward arrow, while a downwards arrow indicates the
temperature of the warming tray. Ten seconds after last use, the unit always comes back to the
default.
5.2 Switching the unit off
Press the Power Key (figure 7 (8)) at the temperature controller to deactivate the dispenser unit. The
device is now in Stand-by, which can be recognized by the word OFF shown in the display.
For complete turn-off, use the main switch on the rear of the device, and put it in position “O”.
If you wish to disconnect the device completely from power supply, please remove the mains plug
from the safety socket.
5.3 Temperature Circuits
The thermal unit has two circuits, that are shown in the display. The digits on the left of the display
with the downwards arrow indicate the temperature of the warming tray. The digits on the right of the
display with the upwards arrow indicate the temperature of the prewarming chamber. To choose one
circuit, use the applicable direction key.

User Manual Thermal Unit TES Valida
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Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
5.4 Temperature controller elements and functions
The temperature controller consists of eight elements.
Before choosing the settings, select the desired circuit (see 5.3.6 Down Key)
5.4.1 Clock Key with Light
Pressing this key switches the display to real time, again pressing toggles it to the power-on state of
the timer. After ten seconds, the display switches back to default. The power-on state of the timer is
basically for both circuits. If the key is pressed for more than two seconds, the input screen for real
time opens up and the display starts blinking. Another keypress closes the real time input mask and
opens the week day input mask.
The light on top right of the key shines when the timer is active.
5.4.2 Digital Display
The digital display shows up to five red digits. Temperature is always shown in Celsius scale.
5.4.3 Heat Warning Light
The red heat warning light is positioned right under the digital display. It starts shining when the
temperature of the surface is above 45 °C.
(3)
(1)
(1) Clock Key with Light
(2) Digital Display
(3) Heat Warning Light
(4) Set Time Key
(5) Setting Key
(6) Down Key
(7) Up Key
(8) Power Key
(2)
(4)
(5)
(6)
(7)
(8)
figure 7
Be careful when the warning light shines. Surface is 45 °C or more. Serious risk of
burning!
There is always a beep when you press a key. This beep does not indicate a
successful operation. Pay attention to the time designations for each feature.

User Manual Thermal Unit TES Valida
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Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
5.4.4 Time Setting Key
Pressing this key switches the display to the first circuit time and opens the input mask for the weekly
circuit times.
5.4.5 Set Key
This key is for calling up the temperature index values. The called up index value blinks and can be
set with the up or down key.
5.4.6 Down Key
When in default, the down key is used to select the warming tray to change its settings. In case of a
running timer, the elapse time is displayed. In setting mode, the key is for reducing the values.
5.4.7 Up Key
When in default, the up key is used to select the prewarming chamber to change its settings. In case
of a running timer, the elapse time is displayed. When in any setting mode, the key is for reducing the
values.
5.4.8 Power Key
To turn one circuit off, select it by pressing the up or down key while in default. Then press the power
key for one second. The circuit is turned off, and the display goes back to default. There, it shows the
remaining active circuit’s temperature, and Off for the deactivated circuit.
To turn a circuit on, select it by pressing the up or down key while in default. Then press the power key
for one second. The circuit is turned on, and the display goes back to default. There, it shows the
remaining active circuits’ temperature.
Each circuit has to be turned off separately. When both circuits are off, pressing the power button will
turn on both again at the same time.
To avoid unintended deactivation, both turning on and turning off require pressing the key 1 second.
one turned off. If both circuits are deactivated, default shows only one Off for both circuits.

User Manual Thermal Unit TES Valida
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Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
5.5 Time settings
5.5.1 Set Real Time
To set the weekly timings, the real time must be set first. If it is not set, the display shows the marquee
Set clock.
Press the Clock Key (figure 7 (1)) for two seconds. The display then shows a blinking time. Blinking
means, that the shown value can be edited. The blinking will stop once you start the setting in order to
avoid irritations. Use the direction keys to set the time. Press the Clock Key again when you are done
to save the current time. The display then shows the blinking word Day with a code number between 1
and 7. This number stands for the current week day. Choose the current week day by using the
direction keys, and confirm the input by pressing the Clock Key again. You have now set your local
time and day.
Current Week Day
Code
Monday
1
Tuesday
2
Wednesday
3
Thursday
4
Friday
5
Saturday
6
Sunday
7
If the setting is not confirmed or processed for ten seconds, the process is cancelled.
When the power supply is off for a considerable time, it is possible that the real time gets lost.
5.5.2 Set Weekly Timer
With the weekly timer, automatic start and end times can be preset in 24 hours mode. It is important
that the real time is set (see chap. 5.5.1 Set Real Time).
Choose the circuit you want to set up by using the direction keys when in default.
Press the Set Time Key for two seconds. The display then shows a figure (1 –7, see Chapter 5.5.1
Set Real Time), an I and a four-digit time indication with a colon in the middle. The I stands for
Activate, and the time indication is the starting time.
Read “1 I 10:15” as “On Monday, timer starts at 10:15 a.m.”.
Press Set Time Key again and then use the direction keys to set the starting time. When you’re done,
press Set Time to save your input. You’ll get back to the display showing the preset time. With the
direction keys, you can switch from this display to any week day and set start and end times. Setting
the ending time is the same procedure.

User Manual Thermal Unit TES Valida
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Read “1 0 20:15” as “On Monday, timer ends at 8:15 p.m.”.
When setting the starting time, between 23:59 and 00:00 there is a stopover “--:--“. When this is
chosen, the unit will stay inactive for that day. Hence, no ending time for that day needs to be set, so
the setting jumps to the next day.
When the Weekly Timer is active, the power key can still be used any time for turning a running circuit
off or on. Therefore, select the desired circuit with the direction keys. Note that in case of both circuits
deactivated, pressing the power key will turn on again both.
Only the current time lapse is affected. Subsequent preset operations are not affected.

User Manual Thermal Unit TES Valida
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6 Failure, Errors and other Problems
6.1 Change of Fuses
In case of failure of the device, check the fuses in the fuse holder, which is integrated in the instrument
socket at the rear. Proceed as follows:
Pull out the mains plug
Open fuse holder with a screw driver
Change the fuse (only use original Medite® material)
Close the fuse holder
Connect to mains and try again
In case of any other defect, or if the described procedure is not successful, contact the Medite®
Service Department.
6.2 Error messages
Indicated Message
Cause
Solution
F1L, blinking
Sensor error; short circuit
Call Service Engineer
F1H, blinking
Sensor error; broken sensor
Call Service Engineer
F2L, blinking
Sensor error; short circuit
Call Service Engineer
F2H, blinking
Sensor error; broken sensor
Call Service Engineer
EP, blinking
Lost data in parameter memory
Call Service Engineer
Set Clock, continuous
Lost real time
Set real time (see 5.4.1)
Only Medite® authorized service engineers are allowed to correct the correspondingly
marked errors. Do not try it yourself!
Never remove any parts of the casing while the instrument is on power.
(1) Notch
(2) Fuse drawer
(3) Fuses
figure 8
First pull out the mains plug!
It is only permitted to use UL accredited fuses, that are available at Medite®!
(2)
(1)
(3)

User Manual Thermal Unit TES Valida
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Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
7 Cleaning, Maintenance and Recycling
7.1 Cleaning
The surfaces of the TES Valida™ and its Thermal Unit can be cleaned with commercial, non
scratching detergents. For safety reasons, the mains plug must be pulled before cleaning the
instrument. Furthermore, working at the instrument is only allowed after cooling down of its heated
parts (danger of burning!).
Clean the instrument after every use to ensure long, trouble-free usage.
7.2 Maintenance
Maintenance of the instrument includes the cleaning of the ventilation slots to make sure that the
chamber is continuously ventilated, and to prohibit overheating. We recommend maintenance at least
once a year.
For safety reasons, the mains plug must be pulled before doing maintenance work at the instrument.
Furthermore, working at the instrument is only allowed after cooling down of its heated parts (danger
of burning!).
7.3 Recycling
At the end of operating life of the TES Valida™ Thermal Unit, please arrange proper recycling.
Medite® is prepared to arrange such proper recycling against payment for the disposal fee.
Do not expose the instrument to regular domestic or industry waste. It contains
electrical parts that can be dangerous to the environment!

User Manual Thermal Unit TES Valida
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Medite GmbH . Wollenweberstr. 12 . 31303 Burgdorf . Germany
Phone [phone]. Fax [phone] [e-mail] . www.medite.de
8 Care Declaration
We are always extremely anxious fort he safety of our customers and users of our products. Our
products need regular care and cleaning. To ensure long and good operating with our products, we
ask our customers for careful handling of the purchased equipment.
By purchasing the equipment, the customer assures to keep the device always in good order and
condition for use, to protect himself or third parties against any unnecessary risk.
In case of maintenance or repair, we kindly ask the customer to make sure that the device and the
accessories in question are in a state that bares no health risks for every person that gets in touch
with it in the process. This includes everyone who prepares the device for dispatch, performs the
dispatch, or takes and unpacks the delivery, and also the Medite® service staff. The customer
arranges for appropriate measures in packing, or for explaining messages concerning the known
sources of danger.
We assume sanitary cleanness.

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9 Maintenance Schedule
Date
Confirmation Customer
Confirmation Medite®
Remarks