Tabla de contenido
Publicidad
The LC3050 is a single channel level alarm capable of measuring conductivity at a fixed point
determined by the position of a Spirax Sarco Ltd LP30 High integrity low level alarm probe and is
intended for low water level detection in steam and hot water boilers.
The safety integrity relies on correct installation of the probe in accordance with the
manufacturer's installation and maintenance manuals and frequent proof testing, and connection
of the appropriate safety actuator(s) using both LC3050 safety relays configured in series to
ensure that the safety function will be carried out by either LC3050 relay being de-energised.
Note: That the normal recommended application of the LC3050 is in a 1oo2 architecture with two
separate LC3050's and two separate LP30 level probes. The output relays are now connected so
that any one of four output relays will implement the safety function on demand.
Safety functions
The safety function covered by this declaration of conformity is to trigger an alarm by de-
energizing an output relay on detecting a water level limit after a pre-set delay.
Product identification and configuration
The LC3050 version covered by this declaration is defined in the Manufacturer's drawings listed
below:
Document number
Rev
4025518
3
4025519
3
4025528
4
4025529
3
4025578
7
4025589
3
The assessment has been carried out with reference to the Conformity Assessment of Safety-
related Systems (CASS) guidance. This includes an assessment of the techniques and measures
6
Date
Document description
26/06/2013
Circuit Diagram for LC3050 (Safety Related Circuits)
08/12/2011
Circuit Diagram for LC3050 (Non-Safety Related Circuits)
25/03/2014
Silk Screen component layout for LC3050
06/12/2011
Silk Screen component layout for LC3050
28/05/2014
Component List (-Safety Related Circuits)
18/01/2012
Component List (-Non Safety Related Circuits)
Page 2 of 5
Version 6
IM-P402-131 AB Issue 8
Ltd
Publicidad
Tabla de contenido
