WIKA TFS135 User manual

EN
Operating instructions
Betriebsanleitung
Mode d'emploi
DE
FR
Bimetal temperature switches, model TFS135
Bimetal temperature switch, model TFS135
Bimetall-Temperaturschalter, Typ TFS135
Thermostat bimétallique, type TFS135

2
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WIKA operating instructions model TFS135
DE
FR
Operating instructions model TFS135 Page 3 - 22
Betriebsanleitung Typ TFS135 Seite 23 - 42
Mode d'emploi type TFS135 Page 43 - 61
© 11/2016 WIKA Alexander Wiegand SE & Co. KG
Alle Rechte vorbehalten. / All rights reserved.
WIKA®is a registered trademark in various countries.
WIKA®ist eine geschützte Marke in verschiedenen Ländern.
Prior to starting any work, read the operating instructions!
Keep for later use!
Vor Beginn aller Arbeiten Betriebsanleitung lesen!
Zum späteren Gebrauch aufbewahren!
Lire le mode d'emploi avant de commencer toute opération !
A conserver pour une utilisation ultérieure !

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Contents
Contents
1. General information 4
2. Design and function 5
3. Safety 7
4. Transport, packaging and storage 11
5. Commissioning, operation 12
6. Maintenance and cleaning 16
7. Dismounting, return and disposal 17
8. Specifications 20

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4WIKA operating instructions model TFS135
1. General information
1. General information
■
The bimetal temperature switch described in the operating
instructions has been manufactured using state-of-the-art
technology. All components are subject to stringent quality and
environmental criteria during production. Our management
systems are certied to ISO 9001 and ISO 14001.
■
These operating instructions contain important information on
handling the instrument. Working safely requires that all safety
instructions and work instructions are observed.
■
Observe the relevant local accident prevention regulations and
general safety regulations for the instrument's range of use.
■
The operating instructions are part of the product and must be kept
in the immediate vicinity of the instrument and readily accessible to
skilled personnel at any time. Pass the operating instructions on to
the next operator or owner of the instrument.
■
Skilled personnel must have carefully read and understood the
operating instructions prior to beginning any work.
■
The general terms and conditions contained in the sales
documentation shall apply.
■
Subject to technical modications.
■
Further information:
- Internet address: www.wika.de / www.wika.com
- Relevant data sheet: TV 35.02
- Application consultant: Tel.: [phone]
Fax: [phone]
[e-mail]

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2. Design and function
2. Design and function
2.1 Overview
Electrical connection
Process connection
Thermowell
2.2 Description
The model TFS135 bimetal temperature switch consists of a
thermowell with integrated switching element and a permanently
mounted connector. In addition to a second switch contact, it is also
possible to integrate a Pt1000 or Pt100 measuring element to enable
continuous temperature measurement.The TFS135 is screwed
directly into the process.
All electrical components are protected against splash water. The
electrical connection is via the connector.







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2. Design and function
2.3 Dimensions in mm
2.4 Scope of delivery
Cross-check scope of delivery with delivery note.
Circular connector
M12 x 1
Circular connector
M12 x 1 with neck tube
45 mm
Rectangular connector
per EN 175301-803
14182125.02

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3. Safety
3. Safety
3.1 Explanation of symbols
WARNING!
... indicates a potentially dangerous situation that can
result in serious injury or death, if not avoided.
CAUTION!
... indicates a potentially dangerous situation that can
result in light injuries or damage to property or the
environment, if not avoided.
DANGER!
... identies hazards caused by electric power. Should
the safety instructions not be observed, there is a risk of
serious or fatal injury.
WARNING!
... indicates a potentially dangerous situation that can
result in burns, caused by hot surfaces or liquids, if not
avoided.
Information
... points out useful tips, recommendations and information
for ecient and trouble-free operation.
3.2 Intended use
The model TFS135 bimetal temperature switches are used to limit
temperatures within a wide variety of industrial applications.
The TFS135 are temperature limiting instruments.They are not
intended to provide any safety or protective functionality.

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3. Safety
They monitor the temperature of machinery and equipment during
normal operation and, for example, switch o machinery if it
overheats.
The instruments are not approved for use in hazardous areas!
The instrument has been designed and built solely for the intended
use described here, and may only be used accordingly.
The technical specications contained in these operating instructions
must be observed. Improper handling or operation of the bimetal
temperature switch outside of its technical specications requires the
instrument to be taken out of service immediately and inspected by
an authorised WIKA service engineer.
The manufacturer shall not be liable for claims of any type based on
operation contrary to the intended use.
3.3 Improper use
WARNING!
Injuries through improper use
Improper use of the instrument can lead to hazardous
situations and injuries.
▶
Refrain from unauthorised modications to the
instrument.
▶
Do not use the instrument within hazardous areas.
▶
Do not use the instrument with abrasive or viscous
media.
Any use beyond or dierent to the intended use is considered as
improper use.
Do not use this instrument in safety or emergency stop devices.

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3. Safety
3.4 Responsibility of the operator
The instrument is used in the industrial sector. The operator is
therefore responsible for legal obligations regarding safety at work.
The safety instructions within these operating instructions, as well
as the safety, accident prevention and environmental protection
regulations for the application area must be maintained.
The operator is obliged to maintain the product label in a legible
condition.
To ensure safe working on the instrument, the operating company
must ensure
■
that suitable rst-aid equipment is available and aid is provided
whenever required.
■
that the operating personnel are regularly instructed in all topics
regarding work safety, rst aid and environmental protection
and know the operating instructions and in particular, the safety
instructions contained therein.
■
that the instrument is suitable for the particular application in
accordance with its intended use.
■
that personal protective equipment is available.
3.5 Personnel qualification
WARNING!
Risk of injury should qualication be insucient
Improper handling can result in considerable injury and
damage to equipment.
▶
The activities described in these operating instructions
may only be carried out by skilled personnel who have
the qualications described below.
▶
Keep unqualied personnel away from hazardous
areas.

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3. Safety
Skilled personnel
Skilled personnel are understood to be personnel who, based on
their technical training, knowledge of measurement and control
technology and on their experience and knowledge of country-
specic regulations, current standards and directives, are capable
of carrying out the work described and independently recognising
potential hazards.
Special operating conditions require further appropriate knowledge,
e.g. of aggressive media.
3.6 Labelling, safety marks
Product label (example)
Model
Contact version, switching temperature, measuring element
Number of production order
Approval logos
Before mounting and commissioning the instrument,
ensure you read the operating instructions!
TFS135 NC 60 °C 12345678
   

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4. Transport, packaging and storage
4. Transport, packaging and storage
4.1 Transport
Check the instrument for any damage that may have been caused by
transport.
Obvious damage must be reported immediately.
CAUTION!
Damage through improper transport
With improper transport, a high level of damage to
property can occur.
▶
When unloading packed goods upon delivery as well
as during internal transport, proceed carefully and
observe the symbols on the packaging.
▶
With internal transport, observe the instructions in
chapter 4.2 “Packaging and storage”.
If the instrument is transported from a cold into a warm environment,
the formation of condensation may result in instrument malfunction.
Before putting it back into operation, wait for the instrument
temperature and the room temperature to equalise.
4.2 Packaging and storage
Do not remove packaging until just before mounting.
Keep the packaging as it will provide optimum protection during
transport (e.g. change in installation site, sending for repair).
Permissible conditions at the place of storage:
■
Storage temperature: -40 ... +85 °C
■
Humidity: 35 ... 85 % relative humidity (no condensation)
Avoidance of exposure to the following factors:
■
Direct sunlight or proximity to hot objects
■
Mechanical vibration, mechanical shock (putting it down hard)
■
Soot, vapour, dust and corrosive gases
■
Hazardous environments, ammable atmospheres

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4. Transport ... / 5. Commissioning, operation
Store the bimetal temperature switch in its original packaging in
a location that fulls the conditions listed above. If the original
packaging is not available, pack and store the instrument as
described below:
1. Wrap the instrument in an antistatic plastic lm.
2. Place the instrument, along with the shock-absorbent material, in
the packaging.
3. If stored for a prolonged period of time (more than 30 days), place
a bag containing a desiccant inside the packaging.
5. Commissioning, operation
WARNING!
Physical injuries and damage to property and the
environment caused by hazardous media
Upon contact with hazardous media (e.g. oxygen,
acetylene, ammable or toxic substances), harmful media
(e.g. corrosive, toxic, carcinogenic, radioactive), and
also with refrigeration plants and compressors, there is a
danger of physical injuries and damage to property and
the environment.
Should a failure occur, aggressive media with extremely
high temperature and under high pressure or vacuum may
be present at the instrument.
▶
For these media, in addition to all standard regulations,
the appropriate existing codes or regulations must also
be followed.
CAUTION!
Damage to the instrument
When working on open electric circuits (printed circuit
boards) there is a risk of damaging sensitive electronic
components through electrostatic discharge.
▶
The correct use of grounded working surfaces and
personal armbands is required.

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5. Commissioning, operation
5.1 Installation
When the temperature switch is mounted, the temperature must
neither drop below the allowed operating temperature (environment,
medium) nor exceed it, even when taking convection and heat
radiation into account.
The installation site must be protected from weather inuences and
permanent UV exposure/sun radiation.
Depending on the type of application, the electrical connection must
be protected from mechanical damage.
5.2 Electrical connection
DANGER!
Danger to life caused by electric current
Upon contact with live parts, there is a direct danger
to life.
▶
The instrument may only be installed and mounted
by skilled personnel.
▶
Operation using a defective power supply unit (e.g.
short-circuit from the mains voltage to the output
voltage) can result in life-threatening voltages at
the instrument!
▶
Only connect in an unpowered state!
▶
Only disconnect the mating connector with the
voltage disconnected.
▶
Use suitable mating connectors for the current and
voltage ranges.
■
Fine-stranded leads must be nished with end splices.
■
Cables used must comply with the respective requirements in
terms of stability and temperature.
■
Connection cables must be run so that any mechanical damage is
prevented.

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5. Commissioning, operation
■
Only connect circuits with the same voltage and type of protection
to the switch contacts and connecting cables.
■
Size the connecting cables for the largest current strength in the
circuits.
Voltages > AC 50 V or DC 75 V
■
The TFS135 must be connected to the system of the protective
grounding of the end product or the end application via the process
connection.
■
Circuits must oer a device, external to the measuring instrument,
that enables the instrument to be isolated from the electrical
supply. This must be easily accessible and be marked as the
isolation device for the instrument.
■
Cables and circuits must full the isolation requirements and
conform to, for example, IEC 60227 or IEC 60245.
■
Do not connect circuits simultaneously with extra-low voltage
circuits, or with safety extra-low voltage circuits (SELV) or
protected extra-low voltage circuits (PELV).
The earthing terminal is not connected and therefore it does not
provide electrical connection to protective earth.
Pin assignment
■
Version with one switch contact
Rectangular connector per
EN 175301-803
Circular connector M12 x 1
not connected

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5. Commissioning, operation
■
Version with 2 switch contacts
■
Version with 1 switch contact and 1 measuring element
Circular connector M12 x 1
Circular connector M12 x 1

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6. Maintenance and cleaning
6. Maintenance and cleaning
For contact details see chapter 1 “General information” or
the back page of the operating instructions.
6.1 Maintenance
The bimetal temperature switch is maintenance-free.
Repairs should only be carried out by the manufacturer or, following
prior consultation, by correspondingly qualied skilled personnel.
6.2 Cleaning
CAUTION!
Physical injuries and damage to property and the
environment
Improper cleaning may lead to physical injuries and
damage to property and the environment. Residual
media in the dismounted instrument can result in a risk to
persons, the environment and equipment.
▶
Carry out the cleaning process as described below.
1. Prior to cleaning, switch o and disconnect the instrument from
the voltage supply.
2. Clean the instrument with a moist cloth.
Electrical connections must not come into contact with moisture!
CAUTION!
Damage to the instrument
Improper cleaning may lead to damage to the instrument!
▶
Do not use any aggressive cleaning agents.
▶
Do not use any hard or pointed objects for cleaning.

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6. Maintenance and cleaning / 7. Dismounting ...
3. Wash or clean the dismounted instrument, in order to protect
persons and the environment from exposure to residual media.
For information on returning the instrument see chapter
7.2 “Return”.
7. Dismounting, return and disposal
7.1 Dismounting
WARNING!
Physical injuries and damage to property and the
environment through residual media
Upon contact with hazardous media (e.g. oxygen,
acetylene, ammable or toxic substances), harmful media
(e.g. corrosive, toxic, carcinogenic, radioactive), and
also with refrigeration plants and compressors, there is a
danger of physical injuries and damage to property and
the environment.
▶
Before storage of the dismounted instrument (following
use) wash or clean it, in order to protect persons and
the environment from exposure to residual media.This
is of particular importance if the medium is hazardous
to health, e.g. caustic, toxic, carcinogenic, radioactive,
etc.
▶
Observe the information in the material safety data
sheet for the corresponding medium.
▶
Wash or clean the dismounted instrument, in order to
protect persons and the environment from exposure to
residual media.

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7. Dismounting, return and disposal
WARNING!
Risk of burns
During dismounting there is a risk of dangerously hot
media escaping.
▶
Let the instrument cool down suciently before
dismounting it!
DANGER!
Danger to life caused by electric current
Upon contact with live parts, there is a direct danger to life.
▶
The dismounting of the instrument may only be carried
out by skilled personnel.
▶
Only demount the strap-on thermometer in a
de-energized state.
WARNING!
Physical injury
When dismounting, there is a danger from aggressive
media and high pressures.
▶
Observe the information in the material safety data
sheet for the corresponding medium.
▶
Only disconnect the bimetal temperature switch once
with the voltage disconnected!
7.2 Return
Strictly observe the following when shipping the instrument:
All instruments delivered to WIKA must be free from any kind of
hazardous substances (acids, bases, solutions, etc.) and must
therefore be cleaned before being returned.

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7. Dismounting, return and disposal
WARNING!
Physical injuries and damage to property and the
environment through residual media
Residual media in the dismounted instrument can result in
a risk to persons, the environment and equipment.
▶
With hazardous substances, include the material safety
data sheet for the corresponding medium.
▶
Clean the instrument, see chapter 6.2 “Cleaning”.
When returning the instrument, use the original packaging or a
suitable transport packaging.
To avoid damage:
1. Wrap the instrument in an antistatic plastic lm.
2. Place the instrument, along with the shock-absorbent material, in
the packaging.
Place shock-absorbent material evenly on all sides of the transport
packaging.
3. If possible, place a bag containing a desiccant inside the
packaging.
4. Label the shipment as carriage of a highly sensitive measuring
instrument.
Information on returns can be found under the heading
“Service” on our local website.
7.3 Disposal
Incorrect disposal can put the environment at risk. Dispose
of instrument components and packaging materials in an
environmentally compatible way and in accordance with the country-
specic waste disposal regulations.
Do not dispose of with household waste. Ensure a proper
disposal in accordance with national regulations.

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8. Specications
8. Specifications
Specications
Temperature ranges
Nominal Switching
Temperature (NST)
50 ... 130 °C
Note:
The nominal switching temperature can be
selected in steps of 5 K. It is preset on delivery and
cannot be changed.
Switch point accuracy ±5 K
Reset Switching
Temperature (RST)
Typically 15 ... 40 K below the switching
temperature
To ensure a safe reset of the switch at low
switching temperatures, care must be taken
that the temperature dierence between the
measuring point and environment is high
enough; since otherwise the switch cannot cool
back down to the reset switching temperature
and thus the instrument will not be able to
return to its normal state.
Ambient temperature The maximum permissible ambient temperature
depends on the electrical connection.
Note:
Due to short installation length there is a risk that
the temperature at the connector will rise up to an
inadmissibly high value.This absolutely must be
taken into account when designing the measuring
point.The temperature at the connector must not
exceed the above mentioned temperature range.
- Rectangular connector
per EN 175301-803
-30 ... +85 °C
- Circular connector
M12 x 1
-25 ... +55 °C
Operating pressure Max. 50 bar