IM-P693-06
EMM Issue 1
3
LCS3050 Low Water Level Switch for two probes
Water level limiters are safety devices and must only be installed, wired and commissioned by
qualified and competent staff. Incorrect installation, wiring or commissioning can impact the safe
operation of the device.
Retrofitting and maintenance work must only be performed by qualified staff who – through adequate
training – have achieved a recognised level of competence.
Danger
The terminal strips of the equipment are live during operation! There is a risk of
serious injury due to electric shock!
Always cut off the power supply to the equipment before installing, removing or
connecting terminal strips!
Important
The name plate specifies the features of the equipment. Do not commission or operate
any item of equipment that does not have its own specific name plate.
1.1 Directives and Standards
Pressure Equipment Directive (PED) 2014/68/EU
Water level limiters are safety accessories as defined in the Pressure Equipment Directive (PED).
The level switch LCS3050 in conjunction with level probe LP40 are EU type approved according to
EN 12952/EN 12953. These Directives state, among other things, the requirements made on limiting
systems and equipment for steam boiler plants and (pressurised) hot-water installations.
Functional Safety acc. to IEC 61508
The level switch LCS3050 is certified acc. to IEC 61508 only if used in combination with level probe
LP40. This standard describes the functional safety of safety-related electrical/electronic/
programmable electronic systems.
The equipment combination LP40 + LCS3050 corresponds to a type B subsystem with Safety
Integrity Level (SIL) 3.
VdTÜV Bulletin “Wasserstand 100” (Water Level 100)
The level switch LCS3050 in conjunction with the level probe LP40 is type approved according to
the VdTÜV Bulletin “Water Level 100”.
The VdTÜV Bulletin “Wasserstand (Water Level) 100” specifies the requirements made on water
level control and limiting equipment for boilers.
LV (Low Voltage) Directive and EMC (Electromagnetic Compatibility)
The level switch LCS3050 meets the requirements of the Low Voltage Directive 2014/35/EU and the
EMC Directive 2014/30/EU.
ATEX (Atmosphère Explosible)
According to the European Directive 2014/34/EU the level switch LCS3050 must not be used in
potentially explosive areas.
1. Safety information