Replacing a defective measuring head
Failure to comply with the safety instructions may result in major damage to property
or the environment and in serious injury or death.
Start by familiarising yourself with the basic safety instructions for working with
the oil mist detector.
Section 2.4 Basic safety instructions
If the oil mist detector is operated in explosion-proof areas, the relevant safety
instructions must be observed.
Section 2.4.1 Safety instructions for potentially explosive
atmospheres
Hazards in explosion-proof areas, when replacing a defective measuring head
Further safety instructions must be followed for SCHALLER products intended for use
in potentially explosive atmospheres, as follows:
For an installed VN2020 EX oil mist detector, e.g. on dual-fuel engines,
the measuring head must be disassembled and assembled in the shortest
possible time, as explosive atmosphere can escape into a non-explosion-proof
area, i.e. outside the engine.
Disassembly and assembly are only allowed with the engine switched off!
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 assemble the system components of the oil mist detector when
the engine is switched off and the system has been disconnected from the
power supply first! The compressed air supply to the oil mist detector must
also be switched off first.
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