Operating manual VISATRON® Oil Mist Detector VN2020 / VN2020 EX
Part number 183001 Version 3.0
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.
Mechanical hazards
There is a risk of serious injury, including death, from explosion in the crankcase as a
result of incorrect assembly or installation.
You may only install and remove the oil mist detector when the engine is
switched off.
The oil mist detector must be levelled horizontally and vertically during
installation.
The oil mist detector must not be painted, varnished or otherwise altered.
To carry out a trial mist test of the oil mist detector 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 name plate) is applicable for this application.
The device must be installed in accordance with IACS Unified Requirement
UR M10.
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
®
VN2020 / VN2020 EX.
Risk of asphyxiation or explosion of the crankcase atmosphere in the engine room.
The exhaust air from the intake system (venturi injector) must be returned to
the crankcase and must not get into the engine room. The following therefore
applies:
The exhaust air line of the oil mist detector must always be connected to the
crankcase (closed circuit). The correct negative pressure in the measuring
head should be 60 mmWC.
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 mmWC
under normal operating conditions.
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