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Spirax Sarco LCS3050, Инструкция по установке и обслуживанию, Страница: 14 / 24

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IM-P693-06 

EMM Issue 1

14

LCS3050 Low Water Level Switch for two probes

5.2 Checking switchpoint and function

Level probe 1 

Test and diagnosis button

Level probe 2 

Test and diagnosis button

LED alarm 1 /operating mode

LED alarm 2 /operating mode

Diagnosis LED

Fig. 11

Start

Activity

Indication

Function

Apply supply voltage.

All LEDs are illuminated.

System is being started and tested, this 

takes approx. 10 sec.

Output contacts are open.

Signal outputs 1 and 2 are closed.

All LEDs are illuminated for more 

than 10 sec.

System malfunction. Possible causes: Faulty 

power supply, level switch defective.

Raise water in boiler until the 

switchpoint “low water level (LW)” 

is exceeded. Level probe(s) make(s) 

contact with the water.

Green LEDs for level probe 1/2 

illuminated.

Output contacts are closed. Signal outputs 1 

and 2 open.

Checking switchpoint and function

Lower water level until it is  below 

the switchpoint “low water level 

(LW)”. Level probe(s) is/are exposed.

Red LEDs for level probe 1/2 are 

flashing.

De-energizing delay is running. Signal 

outputs 1 and 2 are closed instantaneously.

Red LEDs for level probe 1/2 

illuminated.

Delay time has elapsed, output contacts 

open. Signal outputs 1 and 2 are closed.

Possible installation faults

Status and indication

Fault

Remedy

Sightglass indicates level below 

switchpoint “low water (LW)”, 

red LEDs for level probes 1/2 not 

illuminated. Safety circuit closed.

Probe rod(s) is/are too long.

Cut probe rod(s) to the length dictated by the 

switchpoint LW.

If installed inside the boiler: 

Upper vent hole in protection tube 

does not exist or is obstructed.

Check installation of level probe. Make 

sure that the level in the protection tube 

corresponds to the actual water level.

Water level sufficient. Red LEDs for 

level probes 1/2 illuminated! Safety 

circuit open.

Probe rod(s) is/are too short.

Replace probe rod(s) and cut new rods to the 

length dictated by the switchpoint LW.

The earth connection to the 

vessel is interrupted.

Clean probe threads and ensure excessive 

PTFE tape has not been applied.

Electrical conductivity of the 

boiler water too low.

Correct water conductivity.

Upper vent hole flooded.

Check installation of level probe. Make 

sure that the level in the protection tube 

corresponds to the actual water level.

Содержание LCS3050

Страница 1: ...r two probes Installation and Maintenance Instructions IM P693 06 EMM Issue 1 850146 00 1 Safety information 2 General product information 3 Mechanical installation 4 Electrical installation 5 Commiss...

Страница 2: ...IM P693 06 EMM Issue 1 2 LCS3050 Low Water Level Switch for two probes...

Страница 3: ...obe 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 h...

Страница 4: ...P40 LCS3050 corresponds to a type B subsystem with Safety Integrity Level SIL 3 Type B means that the behaviour under fault conditions of the used components cannot be completely determined The functi...

Страница 5: ...tion The specification of the safety related characteristics Table 1 refers to the level probe and the level switch including the output contacts The actuator e g an auxiliary contactor in the safety...

Страница 6: ...probe LP40 After the de energizing delay has elapsed the two output contacts of the level switch will open the safety circuit for the heating The switching off of the heating is interlocked in the ex...

Страница 7: ...ixing screws cross recess head screws M3 4 Code switch for switching on off level probe 1 2 5 Code switch for switching on off level probe 1 2 6 Enclosure 7 Supporting rail type TH 35 EN 60715 Fig 2 T...

Страница 8: ...eur de niveau 20 29 21 30 3sec Functional safety IEC 61508 SIL 3 10 S cm 9 2 LP 40 1 2 3 1 3 4 5 10 11 12 13 16 17 23 24 26 27 LCS3050 MIN 24 V 20 M 0 5A 4 393313 02 MADE IN GERMANY See installation i...

Страница 9: ...00 mA semiconductor output 3 Safety circuit input and output 4 Wire link on site when used as water level limiter according to EN 12952 EN 12953 5 CEP Central earthing point in control cabinet 6 Level...

Страница 10: ...tch for two probes Item 1 Level probe s LP40 2 Level switch LCS3050 3 Safety circuit 4 Level switch LCS3050 for low level pre alarm 4 2 Schematic representations of arrangements Fig 5 Fig 6 Fig 7 Fig...

Страница 11: ...CS3050 as water level limiter The level switch opens two separate safety circuits Functional safety IEC 61508 SIL 3 Further applications in accordance with national sets of regulations Fig 8 Combinati...

Страница 12: ...and 26 Provide the output contacts with a 2 A or 1 A for 72 hours operation slow blow fuse Note In the event of an alarm the level switch LCS3050 does not interlock automatically If a lock function i...

Страница 13: ...g in case of emergency operation change the settings as follows Switch off supply voltage Unscrew the right and left fixing screws 3 and remove the lower terminal strip 2 Fig 2 Depending on which pro...

Страница 14: ...ng Signal outputs 1 and 2 are closed instantaneously Red LEDs for level probe 1 2 illuminated Delay time has elapsed output contacts open Signal outputs 1 and 2 are closed Possible installation faults...

Страница 15: ...LEDs for level probe 1 2 are flashing De energizing delay is running Signal outputs 1 2 are closed instantaneously Red LEDs for level probe 1 2 illuminated Delay time has elapsed output contacts open...

Страница 16: ...r of level probes used Fault indication Status Diagnosis Function Next activity Faulty evaluation of level probe 1 channel 1 Diagnosis LED 1 and LED alarm 1 illuminated Output contacts are opened inst...

Страница 17: ...and hold down key AL2 Diagnosis LED 1 flashing Malfunction in level probe 2 malfunction in level switch faulty wiring faulty measuring voltage check wiring measure probe voltages clean and if necessa...

Страница 18: ...erve Figure 13 U2 4 10 12 U3 4 11 12 U2 3 10 11 immersed exposed Malfunction immersed alarm 0 7 V 85 Hz U2 4 10 12 U2 4 10 12 U3 4 11 12 2 2 Item 1 CEP Central earthing point in control cabinet 2 Leve...

Страница 19: ...ing on which probe shall be deactivated set S1 or S2 of code switches 4 and 5 to ON Attach lower terminal strip and fasten fixing screws Apply supply voltage equipment is re started 4 Toggle switch wh...

Страница 20: ...circuit The circuitry must meet the requirements of the EN 50156 6 6 Checking the switchpoints To check the switchpoint Low water LW you have to lower the water level When the water level falls below...

Страница 21: ...ignalling 24 Vdc max 100 mA semiconductor output Indicators and adjustors 2 buttons for test and diagnosis 2 red green LEDs for indicating the operating mode and alarm 3 red LEDs for diagnosis 2 two p...

Страница 22: ...eration 24 hours Relative humidity max 95 no moisture condensation Site altitude max 2000 m Approvals EU type approval PED Pressure Equipment Directive 2014 68 EU EN 12952 11 EN 12953 09 Requirements...

Страница 23: ...x Sarco representative Ensure all items are suitably packed for transit preferably in the original cartons Please provide the following information with any equipment being returned 1 Your name compan...

Страница 24: ...IM P693 06 EMM Issue 1 24 LCS3050 Low Water Level Switch for two probes Spirax Sarco Ltd Runnings Road Cheltenham GL51 9NQ United Kingdom www spiraxsarco com...

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