Schaller Automation VISATRON VN301plus User manual

INSTRUCTIONS FOR USE
VISATRON®oil mist detector
VN301plus/VN301plus Ex
Version:
Version 2.0
Document No.:
Part number 180072
The original instructions for use are written in German.
Any translations are based on the original instructions for use.

LEGAL NOTICE
The instructions for use apply to the following products:
•VISATRON®VN301plus
•VISATRON®VN301plus Ex
Firmware version of the “Central Unit” at the time of publication:
V1.0 dated 07/01/2019
Copyright
These instructions are protected by copyright. All rights are reserved.
We reserve the right to make technical changes to the hardware and software of our VISATRON®
products without prior notice. We do not assume any liability a currently delivered device having all the
features described in this instructions for use.
The reproduction, translation, microfilming and the storage and processing of these instructions,
including in part, is only allowed with the consent of Schaller Automation Industrielle
Automationstechnik GmbH & Co. KG.
Any infringement shall attract damages and may have consequences under criminal law.
Specifications of nominal conditions, technical changes, improvements and errors are excepted.
These instructions for use may only be passed on to third parties in conjunction with the transfer of the
relevant VISATRON®device.
Copyright © 2022
Schaller Automation Industrielle Automationstechnik GmbH & Co. KG
Industriering 14
66440 Blieskastel Saarland
Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Website: www.schaller-automation.com

VERSION HISTORY AND CHANGE NOTES
Table 1: Version history and change notes
Version
Change
Date
Author
2.0
Revised entire content against the standard, restructured the
sections, plus new layout with revised formatting, based on the
existing Version 1.5. Added further sections and topics.
09 December
2022
J. Wahl

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Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
OVERVIEW OF CONTENTS
Table of contents
1Information about the instructions for use.............................................................................8
1.1 Validity of the instructions for use................................................................................................8
1.2 Use and purpose of the instructions for use................................................................................8
1.3 Document storage.......................................................................................................................8
1.4 Symbols in these instructions for use..........................................................................................8
1.5 Applicable documents and regulations .....................................................................................10
1.6 Qualifications of personnel........................................................................................................10
1.7 Operator’s obligations ...............................................................................................................10
1.8 Conformity.................................................................................................................................11
1.9 Liability for defects.....................................................................................................................11
1.10 Terms of warranty......................................................................................................................11
1.11 Version of the instructions for use.............................................................................................12
1.12 Variables and units of measurement that are used...................................................................13
1.13 Legal information about the product..........................................................................................13
2Safety instructions..................................................................................................................14
2.1 Safety devices and guards........................................................................................................14
2.2 Warnings ...................................................................................................................................14
2.2.1 Structure of warnings.................................................................................................................14
2.2.2 Hazard levels in warnings .........................................................................................................14
2.3 Information, warning and mandatory signs that are used .........................................................16
2.4 Basic safety instructions............................................................................................................17
2.4.1 Safety instructions for potentially explosive atmospheres ........................................................20
3Identification ............................................................................................................................21
3.1 Marking and type description ....................................................................................................21
3.2 Manufacturer’s details ...............................................................................................................21
3.3 Type plate..................................................................................................................................21
3.3.1 Type plate on the VISATRON®VN301plus central unit ..............................................................21
3.3.2 Type plate on the VISATRON®VN301plus sensor unit ..............................................................23
3.4 Technical data ...........................................................................................................................24
3.4.1 Mechanical and electrical interfaces .........................................................................................24
3.4.2 Environmental conditions ..........................................................................................................25
3.4.3 Type approval............................................................................................................................25
4Product overview.....................................................................................................................26
4.1 Component overview and dimensions ......................................................................................26
4.2 Technical description and technical data ..................................................................................30

Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
5
TABLE OF CONTENTS
4.2.1 Function of the VISATRON®VN301plus / VN301plus Ex oil mist detection system.....................30
4.2.2 Device variants..........................................................................................................................30
4.2.3 Function and variants of the sensor unit...................................................................................31
4.2.4 Central unit................................................................................................................................33
4.2.5 Hybrid cable ..............................................................................................................................35
4.2.6 Remote Indicator II for VISATRON®VN301plus/ VN301plus Ex (optional)..................................35
4.2.7 Setting the oil mist sensitivity....................................................................................................36
4.3 Intended use .............................................................................................................................36
4.4 Foreseeable misuse..................................................................................................................37
4.5 Descriptions of the control system and indicator(s)..................................................................37
4.5.1 Controls and indicators for the VN301plus central unit...............................................................37
4.5.2 Indicators, VN301plus / VN301plus Ex sensor unit .......................................................................38
5Transport and storage............................................................................................................39
5.1 Unpacking and items included in delivery.................................................................................39
5.2 Transport...................................................................................................................................39
5.3 Storage conditions before starting up.......................................................................................39
6Assembly and installation......................................................................................................41
6.1 Preparatory steps by the customer...........................................................................................41
6.1.1 Establishing the compressed air supply....................................................................................41
6.1.2 Establishing the electrical power supply...................................................................................41
6.1.3 Establishing signal transfer from the alarm contacts ................................................................42
6.1.4 Establishing CANopen communication.....................................................................................42
6.1.5 Establishing Remote Indicator II communication (optional)......................................................42
6.2 Setting up..................................................................................................................................42
6.3 Assembling the system components ........................................................................................43
6.3.1 Class-compliant assembly and installation according to IACS Unified Requirement UR M10.44
6.3.2 Sensor unit................................................................................................................................44
6.3.3 Central unit................................................................................................................................48
6.3.4 Remote Indicator II for remote monitoring (optional) ................................................................49
6.4 Electrical installation..................................................................................................................49
6.4.1 Operating modes and connection options for the central unit (overview).................................50
6.4.2 Electrical and pneumatic connection of the sensor unit............................................................52
6.4.3 Electrical and pneumatic installation of the central unit............................................................54
6.4.4 Electrical connection of the Remote Indicator II (optional) .......................................................67
6.4.5 Locking the VN301plus central unit after completing the electrical installation ..........................69
6.4.6 Connection earth to the housing of the VN301plus central unit (optional)..................................70
6.5 Starting up for the first time.......................................................................................................71
6.5.1 Checklist for starting up for the first time...................................................................................72

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Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
OVERVIEW OF CONTENTS
6.5.2 Connecting the power supply....................................................................................................73
6.5.3 Setting the supply pressure on the pressure regulator of the VN301plus central unit................74
6.5.4 Setting the sensor sensitivities on the VN301plus central unit....................................................76
6.5.5 Function test when starting up for the first time ........................................................................77
7Manufacturer settings.............................................................................................................80
7.1 Adjusting the parameters on the VISATRON®VN301plus central unit.......................................80
8Operation and use...................................................................................................................83
8.1 Check every time before operation ...........................................................................................83
8.2 Operation under correct conditions ...........................................................................................84
8.3 Switching the device on and off.................................................................................................84
8.4 Normal operation.......................................................................................................................84
8.5 LED check .................................................................................................................................85
8.6 Checking the supply pressure, sensor OMC and sensitivity.....................................................86
8.7 “Oil mist pre-alarm” status indicator ..........................................................................................87
8.8 “Oil mist alarm” status indicator.................................................................................................87
8.9 Confirming an oil mist alarm......................................................................................................89
9Maintenance and repair ..........................................................................................................92
9.1 Maintenance by the operator.....................................................................................................92
9.1.1 Maintenance cycles for reliable operation.................................................................................93
9.1.2 Cleaning the measuring track area on the sensor unit (4,000 hrs.)..........................................96
9.1.3 Replacing the air filter element on the pressure reducer unit (4,000 hrs.)..............................101
9.1.4 Function test of the sensor units using smoke tube (8,000 hrs.) ............................................104
9.2 Inspection of the oil mist detection system (16,000 hrs. or after 24 months)..........................107
9.3 Repair by the operator.............................................................................................................107
9.3.1 Replacing the VN301plus central unit .......................................................................................107
9.3.2 Replacing the VN301plus / VN301plus Ex sensor unit................................................................107
9.3.3 Replacing the hybrid cable......................................................................................................107
9.4 Repair by Schaller Automation................................................................................................108
9.5 Taking out of service and disassembly ...................................................................................108
9.6 Starting up for again................................................................................................................108
10 Error diagnosis and troubleshooting..................................................................................109
10.1 Behaviour of the oil mist detection system in the event of a fault ...........................................109
10.1.1Sensor defect ..........................................................................................................................110
10.2 Troubleshooting.......................................................................................................................111
11 Final shutdown and disposal...............................................................................................113
11.1 Disposal...................................................................................................................................113
11.2 Final shutdown ........................................................................................................................113
12 Contact ...................................................................................................................................114

Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
7
TABLE OF CONTENTS
13 Spare parts for VN301plus/VN301plus Ex..........................................................................115
13.1 Spare parts list ........................................................................................................................115
14 Accessories for VN301plus/VN301plus Ex.........................................................................120
15 List of figures ........................................................................................................................121
16 List of tables..........................................................................................................................123
17 Glossary.................................................................................................................................124
18 EC Declaration of Conformity..............................................................................................125
19 Appendix................................................................................................................................127
19.1 Description of error on the VN301plus / VN301plus Ex sensor unit............................................127
19.2 Description of error on the VN301plus central unit ...................................................................130
20 Notes ......................................................................................................................................133
21 Index.......................................................................................................................................134
22 Customer information...........................................................................................................135

Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
8
1 Information about the instructions for use
1.1 Validity of the instructions for use
These instructions for use apply to the products:
•VISATRON®VN301plus
•VISATRON®VN301plus Ex
hereafter referred to as the “device”.
1.2 Use and purpose of the instructions for use
The instructions for use are intended for:
•the operator of the device; and
•the qualified personnel responsible for installing, starting up, operating and
servicing the device.
These instructions for use will support you to:
•carry out initial assembly and installation as intended;
•operate the device safely and in accordance with its intended use;
•avoid hazards;
•carry out maintenance and repair work as intended and thereby reduce repair
costs and long downtimes;
•guarantee or increase the reliability and service life of the device;
•select and order spare parts and accessories; and
•find authorised service partners local to you
Hazard warnings, safety regulations and the information in these instructions for
use must be observed without exception.
You must read, understand and apply the instructions for use in order to operate
and work on the device properly and safely.
These instructions for use must be read and applied by the fitter and the
responsible specialist personnel/operator before transport, installation/removal,
starting up, operation and maintenance.
1.3 Document storage
These instructions, as well as all other applicable documents, must be kept in a
central place so that they are always available to the qualified personnel at the
place of use.
The documents must be handed over in full to subsequent owners.
1.4 Symbols in these instructions for use
Various types of notation and symbols are used in the text of these instructions. These
are explained below:

Numbered steps:
Required action
Result of the sequence of actions
•Symbol for a list
1. Points of the list
Reference to a section or figure
Display text
Additional information and instructions
Environmental and energy-saving tips
Different warning symbols are used for warnings. Please see the descriptions and
instructions in the .Section 2 Safety instructions

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Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
INFORMATION ABOUT THE INSTRUCTIONS FOR USE
1.5 Applicable documents and regulations
Further documents apply in conjunction with these instructions for use.
For added components, follow the instructions supplied for those components.
(Section 19 Appendix)
When using the device and for all service work, also follow:
•the recognised technical rules for working safely and correctly;
•the statutory accident prevention regulations;
•the statutory environmental protection regulations;
•the provisions of the employers’liability insurance association;
•the regulations applicable in other countries and the requirements for the
state of the art; and
•the rules and instructions of the operator.
1.6 Qualifications of personnel
Installation, starting up, operation and maintenance of the device may only be carried
out by appropriately qualified personnel.
The operator must therefore ensure that the personnel for the work/activities defined in
these instructions for use have the appropriate qualifications and/or are trained and fully
understand the contents of these instructions for use.
The following operator qualifications are required for this device:
•completed vocational training as an electronics technician or mechatronics
technician, industrial mechanic or equivalent technical training; and
•instruction by the operator on the instructions for the entire installation on
site.
Certain maintenance work may only be carried out by authorised specialist personnel.
The operator must define and provide rules for the area of responsibility, the authority
and the supervision of personnel for such work in advance.
1.7 Operator’s obligations
Only employed qualified and instructed maintenance and installation personnel.
Define rules for the authority and supervision of personnel.
Check all safety devices regularly to ensure they are functioning and complete.
Ensure that scheduled maintenance is carried out as planned.
Inform the manufacturer of any damage that is identified.
Provide personnel with the necessary protective equipment.
Replace damaged parts.
Keep the work areas and escape routes clear and in good condition.
Inform yourself of the health and safety regulations applicable at the place of
use.
In a risk assessment, also identify hazards that arise from the specific working
conditions at the place of use.
Implement the knowledge gained from the risk assessment in the form of
instructions.

Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
11
INFORMATION ABOUT THE INSTRUCTIONS FOR USE
1.8 Conformity
The device is safely designed and built according to the applicable technical rules. The
device complies with the safety requirements of the following directives:
•Machinery Directive 2006/42/EC
•EMC Directive 2004/108/EC
•ATEX Directive 2014/34/EU
Applied harmonised standards:
•EN ISO 12100:2010-11
•EN ISO 4414:2010-11
•EN 60529:2014-09
•EN 61000-6-1:2007
•EN 61000-6-2:2005
•EN 61000-6-3:2007 + A1:2011
•EN 61000-6-4:2007 + A1:2011
•EN IEC 60079-0:2018
•EN 60079-28:2015
Applied national standards and technical specifications:
•IACS UR M10: Rev.4 2013
•IACS UR M67: Rev.2 2015
•IEC 60079-0 (2017) and IEC 60079-28 (2015)
1.9 Liability for defects
The terms in the order confirmation from Schaller Automation Industrielle
Automationstechnik GmbH & Co. KG or the terms agreed in the contract apply.
Claims for personal injury and damage are excluded if they are due to one or more of
the following causes:
•use not as intended  Section 4.4 Foreseeable misuse
•foreseeable misuse  Section 4.4 Foreseeable misuse
•technical data  Section 3.4 Technical data
•technical description  Section 4.2 Technical description and technical data
1.10 Terms of warranty
The extent of warranty is defined in the “General Terms and Conditions”.
The warranty is invalidated by the following:
•Incorrect installation, maintenance and servicing of the device, by insufficiently
qualified personnel.
•Operating the device with safety devices that are not properly attached or are
not functioning.

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Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
INFORMATION ABOUT THE INSTRUCTIONS FOR USE
•Failure to observe the instructions, commands and prohibitions in the
instructions for use.
•Unauthorised structural changes to the device.
•Inadequate monitoring of wear parts.
•Maintenance work not carried out correctly and not carried out in good time.
•Modifications to the device may invalidate the warranty.
•Retrofitting and modifications are only allowed after consulting Schaller
Automation Industrielle Automationstechnik GmbH & Co. KG.
•Transport damage as a result of incorrect handling.
The following also applies in addition:
Statutory regulations must be observed.
Do not make any unauthorised changes or manipulate the device.
Only use correct and approved materials.
Only use approved and suitable spare parts. Section13.1 Spare parts list
Normal wear and tear is not a malfunction for the purpose of the terms of
warranty.
1.11 Version of the instructions for use
This document has been prepared to the best of our knowledge and belief. It represents
the technical version of the device as delivered.
Schaller Automation Industrielle Automationstechnik GmbH & Co. KG reserves the right
to amend and revise this document, if necessary. The products supplied by Schaller
Automation are production devices with long service life, developed and produced
according to the current state of the art. There is therefore a range of factors that may
require revision of this document, such as:
•Knowledge gained during starting up.
•Knowledge gained during maintenance and repairs.
•Additional requirements from customers and authorities.
•Changes to standards and regulations.
•Modernisation and overhaul of plant.
•Extensions to the scope of the order by the client.
•Knowledge gained by the operator regarding plant safety and plant operation.
The version of the document is indicated by the version date and the version number on
the title page and in the footer. The operator must check that the document is
up-to-date.

Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
13
INFORMATION ABOUT THE INSTRUCTIONS FOR USE
1.12 Variables and units of measurement that are used
The following table list the variables and units of measurement that are currently used in
the instructions for use. We reserve the right to add to or change the table, as
necessary.
Variable
Unit
Length
mm, m
Volume
m3, l
Mass
g, kg
Flow rate, volumetric
l/min, m3/min, l/h, nm3/h, m3/h,
Temperature
°C
Density
kg/m3
Frequency
Hz
Pressure
mbar, bar, mmH2O
Relative humidity (RH)
%
Oil mist concentration
mg/l
Opacity
%
Acceleration (vibration)
g, m/s2
Voltage
V (volt)
Current
A (amps)
AC voltage
AC
DC voltage
DC
Torque (M)
Nm
Table 2: Variables and units of measurement that are used
1.13 Legal information about the product
The main function of the product, i.e. the intake and analysis of explosive atmosphere
from the crankcase, is protected nationally and internationally by the following patent:
•EP2615269B1
For all questions and activities arising in connection with the above patent, please
contact SCHALLER Automation in advance:
SCHALLER Automation (Headquarters)
Industrielle Automationstechnik GmbH & Co. KG
Industriering 14
66440 Blieskastel, Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Website: www.schaller-automation.com

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Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
SAFETY INSTRUCTIONS
2 Safety instructions
These instructions for use contain safety instructions.
2.1 Safety devices and guards
These instructions for use contain instructions for your safety. The following basic safety
instructions are instructions that always apply in order to operate the machine safely and
keep the machine in a safe condition.
The warnings that relate to specific actions warn you about residual hazards and are
provided before any hazardous step.
All instructions must be followed to prevent personal injury, environmental
damage or property damage.
2.2 Warnings
Warnings indicate potential residual hazards before an action.
2.2.1 Structure of warnings
Warnings are provided before hazardous steps. Warnings have the following structure:
SIGNAL WORD
Nature and source of the hazard!
Description of the nature and source of the hazard.
Measures to prevent the hazard.
2.2.2 Hazard levels in warnings
The warnings have different levels according to the severity of the hazard. The hazard
levels with the corresponding signal words and warning symbols are described below.
DANGER
Immediate risk of death or serious injury.
Indicates a high-risk hazard which, if not avoided, will result in death or serious
injury.
WARNING
Potential risk of death or serious injury.
Indicates a medium-risk hazard which, if not avoided, could result in death or
serious injury.

Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
15
SAFETY INSTRUCTIONS
CAUTION
Potential risk of minor injury.
Indicates a low-risk hazard that, if not avoided, may result in minor or
moderate injury.
NOTICE
Potential damage to the device or the surroundings.
Indicates a potential hazard, with the aim of preventing damage.

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Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
SAFETY INSTRUCTIONS
2.3 Information, warning and mandatory signs that are used
The following symbols and signs according to DIN EN ISO 7010 and DIN 4844-2 are
used in these instructions for use:
Symbol
Description
General warning sign
Warning; electricity
Warning; explosive atmosphere (Atex)
Warning; explosive atmosphere (Atex; IECEx)
Warning; hot surface
Warning; overhead load
Disconnect before carrying out maintenance or repair
Connect an earth terminal to the ground
Wear protective gloves
Wear ear protection
Wear eye protection
Wear head protection

Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
17
SAFETY INSTRUCTIONS
Symbol
Description
Refer to instruction manual/booklet
Note: Important information!
Note: A qualified electrician is required for installation!
Note: Action required!
Table 3: Information, warning and mandatory signs
2.4 Basic safety instructions
The basic safety instructions are instructions that always apply in order to operate the
machine safely and keep the device in a safe condition.
If the following safety instructions are not observed, the following may occur:
•there may be personal injury, environmental damage or damage to property;
•important functions of the device may fail;
•specified methods of maintenance and servicing may fail;
•any claims may fail.
Observe the following instructions for your own protection and for the protection
of your surroundings.
If necessary, draw people’s attention to the safety and warning instructions.
CAUTION
Safe and proper use of the device
Read the instructions for use and other documents that accompany the
product carefully and keep them in a suitable place for later use.
For repair and service work, you must follow the instructions in the instructions
for use.
NOTICE
Personal protective equipment
Operating the device or working on the device without protective equipment may result
in serious injury. For the workplace PPE, the following protective equipment must be
used:
DIN EN 388:2016 Protective gloves against mechanical risks, 2341X, and DIN
EN 407:2004 Protective gloves against thermal risks, X1XXXX
Safety glasses in accordance with DIN EN 166 or DIN EN 170
Safety helmet in accordance with DIN EN 397 and DIN EN 50365
ESD safety shoes according to ESD standard DIN EN 61340-5-1

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Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
SAFETY INSTRUCTIONS
DANGER
Malfunction
Operating the device with a malfunction creates a risk of death and may cause
environmental damage and/or damage to the device.
The device must be taken out of operation immediately in the event of a
malfunction.
DANGER
Mechanical hazards
There is a risk of serious injury, including death, due to explosion in the crankcase as
a result of incorrect assembly or installation.
Before starting the engine, the sensor unit must be properly connected to the
sensor base plate. Otherwise, an explosive atmosphere may escape from the
engine and lead to a risk of explosion.
Before starting the engine, the base plate of the sensor unit must be
connected to the intake manifold. Otherwise, an explosive atmosphere may
escape from the engine and lead to a risk of explosion.
Before starting the engine, the intake manifold of the sensor unit must be
connected to the engine wall by the engine wall screw fitting. Otherwise, an
explosive atmosphere may escape from the engine and lead to a risk of
explosion.
Before starting the engine, the plug-in connector of the hybrid cable must be
connected to the sensor unit and locked. Otherwise, an explosive atmosphere
may escape from the engine and lead to a risk of explosion.
To carry out a trial mist test of the sensor unit while the engine is running, the
mist inlet screw must be opened. Open it as briefly as possible, as an
explosive atmosphere can escape and cause an risk of explosion.
Only trained specialist personnel are allowed to carry out assembly,
installation and starting up of the oil mist detector. The qualified personnel
must have knowledge of the type of protection, instructions and regulations for
the equipment in potentially explosive atmospheres. Check whether the
classification (see type plate) is applicable for this application.
The device must be installed in accordance with IACS Unified Requirement
UR M10.
DANGER
Pneumatic hazards
Assembly, installation and disassembly of the device must only be carried out when
the device is not under pressure.
Before starting work, deactivate the compressed air supply to the
VISATRON®VN301plus/VN301plus Ex central unit.
Risk of asphyxiation or explosion of the crankcase atmosphere in the engine room.
The exhaust air from the sensor units must be fed back to the crankcase and
must not get into the engine room.
Return of the exhaust air into the crankcase
The oil mist detector with return of the crankcase atmosphere into the
crankcase is suitable for a crankcase pressure in the range of ±500 mmH2O
under normal operating conditions.

Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
19
SAFETY INSTRUCTIONS
DANGER
Electrical hazards
Electrical damage to the device from welding work on the engine as a result of
overvoltage.
Before starting work, disconnect the VISATRON®VN301plus/VN301plus Ex
central unit from the power supply.
You may only assemble, install and remove the device when the engine is switched
off.
Before starting work, disconnect the VISATRON®VN301plus/VN301plus Ex
central unit from the power supply.
Repair work on the device
Before starting work, disconnect the VISATRON®VN301plus/VN301plus Ex
central unit from the power supply and/or ensure that the housing is earthed.
DANGER
Risk of burns
Depending on the media that are used, the installation location and the operating
mode, the surfaces of the device and the connected parts of the system may become
hot. The heat can cause serious injury.
Insulate the device against heat radiation on installation, depending on the
wall temperature.
Make sure that the surfaces have cooled down sufficiently.
Install guards that prevent contact with the device.
Observe the permissible ambient temperature Ta (during intended
use): +5°C ≤ Ta ≤ +70°C.
Typical gases of ignition protection category T4: T4 maximum surface
temperature must be ≤ 135°C.
Wear suitable protective gloves.
DANGER
Noise pollution
At the mounting position of the device, there are high noise emissions from running of
the engine, which can damage hearing and cause environmental noise pollution.
Take measures to protect against noise when installing the device.
Wear suitable ear protection during operation.
Observe the statutory regulations for protection against noise.

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Instructions for use VISATRON® oil mist detector VN301plus/VN301plus Ex
Part number 180072 Version 2.0
SAFETY INSTRUCTIONS
NOTICE
Maintenance and repair work
It is only safe to operate the device when it is in perfect working condition. The
operator is responsible for proper and safe condition of the device.
Have the specified inspections and maintenance work carried out regularly.
Carry out the specified checks before operation.
2.4.1 Safety instructions for potentially explosive atmospheres
DANGER
Hazards in Ex-protected areas
The following basic safety instructions apply to SCHALLER products intended for use
in potentially explosive atmospheres:
Only personnel trained for potentially explosive atmospheres may handle and
install the product.
Make that the product is approved for the application  Section 3.1 Marking and
type description
Always comply with the zoning to install the product in the correct location.
 Section 3.1 Marking and type description
Only use tools suitable for potentially explosive atmospheres.
Note that modifications are not allowed without prior approval from
SCHALLER AUTOMATION.
Make sure that damaged products are not installed or operated in the
potentially explosive atmosphere.
Modifications to the device or the electrical connections mean that it is no
longer safe to operate and there is no longer protection against explosion.
Observe the characteristics and rated operating conditions on the type and
data plates.
Observe the national and local safety regulations, accident prevention
regulations and assembly and installation regulations.
Observe the general safety instructions.
Observe the generally recognised rules of technology.
Observe any additional information signs on the device.