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LRR 1-52, LRR 1-53, URB 55 - Installation & Operating Manual - 

850645-01

Changing the equipment settings

Code switch 

D

 

- sliding switch, white

Conductivity controller LRR 1-52, LRR 1-53

Code switch 

D

S1

S2 *

S3 *

S4

Configuration

OFF

MIN relay output as MIN alarm  
(factory setting)

ON

MIN relay output for actuating an intermittent blowdown valve

OFF

Node ID = 72 *

ON

Node ID = 69 - compatibility with older equipment 
(factory setting)

OFF

Terminal 3/4 (Out 2) as actual value output (X) 
(factory setting) *

ON

Terminal 3/4 (Out 2) as manipulated variable output (Yw)

OFF

Electrical conductivity measured in µS/cm 
(factory setting)

ON

Electrical conductivity measured in ppm

* Controller software version 311178.13 or later

Fig. 19

Summary of Contents for LRG 16-9

Page 1: ...Installation Operating Manual E N English Conductivity Controller LRR Visual Display and Operating Unit URB LRR 1 52 LRR 1 53 URB 55 850645 01 ...

Page 2: ...t liability 13 Function 14 Possible combinations of functions and equipment 14 Technical data LRR 1 52 LRR 1 53 16 Technical data URB 55 18 Factory settings LRR 1 52 LRR 1 53 20 LRR 1 52 20 LRR 1 53 20 LRR 1 52 LRR 1 53 20 Factory settings URB 55 21 Name plate Marking LRR 1 52 LRR 1 53 22 Name plate Marking URB 55 23 Functional elements and dimensions LRR 1 52 LRR 1 53 24 Installing the LRR 1 52 L...

Page 3: ...e output 4 20 mA 34 Connecting the standby input 24 V DC 34 Connecting the potentiometer 0 1000 W 34 Connecting the data line between the conductivity controller and the URB 55 35 Connecting the SPECTORmodul bus system 35 Changing the equipment settings 36 Status display on the LRR 1 52 LRR 1 53 38 Visual display and operating unit URB 55 39 Switching on the supply voltage 39 Operation and navigat...

Page 4: ...range LRR 1 52 61 Setting the measuring range LRR 1 53 61 Setting the control parameters 62 Guide to setting control parameters 62 Setting automatic intermittent blowdown 63 System malfunctions URB 55 64 Display of system malfunctions in the alarm and error list using fault codes 64 Common faults and issues during use of the URB 55 65 System malfunctions LRR 1 52 LRR 1 53 66 Causes 66 Before start...

Page 5: ...anuals on our website http www gestra com documents brochures html Copyright All rights reserved Any misuse particularly reproduction and dissemination to third parties is not permit ted The General Terms Conditions of GESTRA AG apply Scope of delivery Product package LRR 1 5x 1 x Conductivity LRR 1 52 or LRR 1 53 URB 55 1 x visual display and operating unit URB 55 4 x retaining clips 1 x power su...

Page 6: ...ts Read this Manual in full and follow all instructions Please also read the instructions for use of any accessories The Installation Operating Manual is part of the product package Keep it in an easily accessible location Availability of this Installation Operating Manual Make sure this Installation Operating Manual is always available to the operator If you pass on or sell the equipment to a thi...

Page 7: ...situation that results in death or serious injury WARNING Warning of a dangerous situation that may possibly result in death or serious injury CAUTION CAUTION Warning of a situation that may result in minor or moderate injury ATTENTION ATTENTION Warning of a situation that results in damage to property or the environment ...

Page 8: ...l The duration of intermittent blowdown can be set between 1 and 10 s For large boilers repeated intermittent blowdown pulses may be required Repetition can be set between 1 and 10 with an interval from 1 10 seconds pulse interval External intermittent blowdown If more than one steam boiler is connected to a single blowdown receiver simultaneous blowdown is not permitted In this case an external i...

Page 9: ...osition triggered by an external control command The MIN MAX limits and monitoring function remain active in standby mode When the equipment is back in normal mode the continuous blowdown valve returns to the control position In addition an intermittent blowdown pulse is triggered if automated intermittent blowdown is enabled and a blowdown interval and blowdown time have been set Pb proportional ...

Page 10: ...B 55 is designed for installation in a control cabinet door or switch panel It may only be used when correctly installed If you are using a URB 50 please pay attention to the information in Installation Operating Manual LRR1 52 LRR1 53 URB50 Overview of possible unit combinations Conductivity controller Conductivity electrode transmitter Visual display and operating unit LRR 1 52 LRG 12 2 LRG 16 4...

Page 11: ... depth mechanisms in your system security to restrict access and control to individ ual products and networks Applicable directives and standards LRR 1 52 LRR 1 53 The LRR 1 52 LRR 1 53 conductivity controller has been tested and approved for use in the scope gov erned by the following directives and standards Directives Directive 2014 68 EU Pressure Equipment Directive Directive 2014 35 EU Low Vo...

Page 12: ...vironments EN 61000 4 29 2000 Electromagnetic compatibility EMC Part 4 29 Testing and measurement techniques Voltage dips short interruptions and voltage variations on d c input power port immunity tests EN 61000 6 4 2007 A1 2011 Electromagnetic compatibility EMC Part 6 4 Generic standards Emission standard for industrial environments EN 60945 2002 Maritime navigation and radiocommunication equipm...

Page 13: ...as expected it may be faulty Perform failure analysis Only replace faulty equipment with identical equipment from GESTRA AG Required personnel qualifications Activity Personnel Integration in control system Specialist staff Plant designer Installation electrical connection bringing into service Specialist staff Electrician installer Operation Boiler service technician Staff trained by the plant op...

Page 14: ...sual display and operating unit provides the following common functions Conductivity controller LRR 1 52 LRR 1 53 Conductivity measurement with an LRG 1 conductivity electrode and separate Pt 100 resistance thermometer TRG 5 or Conductivity measurement with an LRG 16 9 conductivity electrode with integrated resistance thermometer l Evaluating the temperature compensated current signal of a connect...

Page 15: ... l Display of valve position Yw bar chart in l Setting the measuring range l Display setting control parameters l Trend log l Display and list of faults alarms and warnings l Testing MIN MAX output relays or actuating the intermittent blowdown valve l Manual automatic mode l Password protection l Level and conductivity controllers can be operated simultaneously l Fig 4 ...

Page 16: ...owdown OFF Outputs Continuous blowdown valve CLOSED OPEN 2 x volt free relay contacts changeover relays Maximum switching current 8 A at 250 V AC 30 V DC cos ϕ 1 MIN MAX alarm 2 x volt free relay contacts changeover relays Maximum switching current 8 A at 250 V AC 30 V DC cos ϕ 1 or MAX alarm and MIN relay as intermittent blowdown valve 1 x volt free relay contact changeover relay intermittent blo...

Page 17: ...binet with protection rating IP 54 Admissible ambient conditions Service temperature 10 C 55 C 0 C 55 C at power on Storage temperature 20 C 70 C Transport temperature 20 C 80 C 100 hours Air humidity max 95 non condensing Only switch on after a 24 hour defrosting period Housing Housing material Lower section of black polycarbonate glass fibre reinforced front of grey polycarbonate 2 x 15 pole ter...

Page 18: ... Resolution 800 x 480 pixels WVGA Brightness 200 Cd m2 dimmable Size field of view 110 mm x 65 mm IP rating Front IP 66 Back IP 20 Admissible ambient conditions Service temperature 0 C 60 C Storage temperature 20 C 70 C Transport temperature 20 C 70 C Air humidity 5 85 relative humidity non condensing Housing Material Front metal glass rear metal electronics housing Housing attachment with the sup...

Page 19: ... data URB 55 Weight Approx 1 kg Internal battery permanently installed non replaceable Type Lithium ion battery is charged automatically If the equipment is out of service for six months or more we recommend connecting it to the supply voltage for one day to recharge the battery ...

Page 20: ...ftware 311178 13 LRR 1 52 LRR 1 53 MAX switchpoint 6000 µS cm MIN switchpoint 500 µS cm Reset hysteresis MAX limit 3 of set limit factory default Set point 3000 µS cm Proportional band Pb 20 of set point Reset time Ti 0 seconds Neutral zone 5 of set point Valve runtime 360 seconds Controlled operation Automatic MIN relay function MIN alarm 24h flushing On Flushing interval 0 hours Flushing time 18...

Page 21: ...Manual 850645 01 Factory settings URB 55 The visual display and operating unit is delivered with the following factory settings PWL 1 111 Conductivity in µS cm VNC Service ON Target IP 192 168 0 84 Subnet 255 255 255 0 Gateway 192 168 0 1 Modbus TCP Off ...

Page 22: ...0 LRG 1 MAX M 0 5A _ _ _ Absalzregler Continuous Blowdown Controller Régulateur de déconcen tration continue _ 0 5 10000µS cm 0 25 5000ppm 0525 250V T2 5A IN Standby _ 24V DC Tamb T55 C 131 F 5W 24V 20 IP40 IP20 GESTRA AG Münchener Str 77 28215 Bremen Made in Germany 4 20mA URB 5 Data OUT Serial number Betriebsanleitung beachten See installation instructions Voir instructions de montage LRR 1 53 T...

Page 23: ...on a Flat Surface of a Type 12 4X Enclosure GESTRA AG Münchener Straße 77 28215 Bremen www gestra com URB 55 Mat Nr 393347 Mat Nr 393347 ANW Nr 307625 Type designation Mains voltage Power consumption Serial number Date of production DD WW Safety note Stock code IP rating Disposal information UL listed Admissible ambient temperature Manufacturer Fig 7 ...

Page 24: ...tivity controller E Front membrane with status LED see page 38 F Housing G Support rail TH 35 Functional elements and dimensions LRR 1 52 LRR 1 53 The code switch can be accessed by disconnecting and removing the lower terminal strip Equipment settings see page 37 Fig 8 100 73 118 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 MAX 1 27 16 17 18 19 20 21 22 23 24 25 26 28 29 30 A B C F G D E ...

Page 25: ...R DANGER There is a risk of electric shock during work on electrical systems Switch off the voltage to the plant before you install the equipment Check that the system is not carrying live voltage before commencing work 1 Switch off the voltage to the system or secure the surrounding equipment in the control cabinet if live so it cannot be touched 2 Carefully press the unit onto the support rail u...

Page 26: ... 1 53 URB 55 Installation Operating Manual 850645 01 Dimensions URB 55 107 mm 147 mm 147 mm 136 mm 96 mm 8 mm 52 mm 136 mm 96 mm Fig 9 Fig 10 Required installation aperture in the control cabinet door or switch panel ...

Page 27: ...lation aperture 136 x 96 mm e g in a control cabinet door B 4 x fastening elements supplied C 4 x mounting holes in the equipment 1 Cut an aperture see Fig 11 in the control cabinet door or switch panel 2 Stick the supplied gasket to the back of the display frame 3 Carefully push the URB 55 visual display and operating unit through the aperture making sure the gasket is correctly seated 4 Insert t...

Page 28: ...ot for SD card with FAT32 file format for service purposes SDHC memory cards are not supported L L Connection for 24 V DC supply voltage pin assignment Connector Socket Fig 14 Use a SELV Safety Extra Low Voltage power supply unit for connecting the supply voltage To connect the supply voltage to the supplied 3 pole connector use a cable with a max con ductor size of 2 5 mm2 Pin assignment of the d...

Page 29: ...DANGER DANGER Incorrectly connecting the conductivity controller or any associated components is a danger to system safety Connect the conductivity controller and all associated components as shown in wiring diagrams Fig 16 to Fig 18 in this Manual Do not use unused terminals as jumpers or support terminals ...

Page 30: ... S MIN alarm relay output or Actuates an intermittent blowdown valve MIN MAX alarm relay output OPEN Supply voltage fuse provided by customer M 0 5A Data line for URB 55 shield MAX Actual value manipulated variable output switchable CLOSED Display of valve position potentiometer 0 1000 W Standby input for an external command Control OFF Valve CLOSED Intermittent blowdown OFF Actuates a continuous ...

Page 31: ...put MAX OPEN Supply voltage fuse provided by customer M 0 5A Actual value manipulated variable output switchable Display of valve position potentiometer 0 1000 W M Data line for URB 55 shield LRG 16 9 Conductivity electrode with integrated resistance thermometer Fig 17 Standby input for an external command Control OFF Valve CLOSED Intermittent blowdown OFF 24 V DC 4 20 mA M 0 5 A 24 V DC 27 16 17 ...

Page 32: ...LOSED OPEN MAX alarm relay output MAX Supply voltage fuse provided by customer M 0 5A Actual value manipulated variable output switchable Display of valve position potentiometer 0 1000 W Data line for URB 55 M shield LRGT 1x x Conductivity transmitter 4 20 mA with earthing point Fig 18 24 V DC 27 16 17 18 19 20 21 22 23 24 25 26 28 29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 24 V DC 4 20 mA M 0 5 A ...

Page 33: ...uch as contactors and actuators must have interference suppression using RC combinations as per the manufacturer s specifications Connecting an LRG 12 2 LRG 16 4 LRG 17 1 LRG 19 1 conductivity electrode and a TRG 5 xx resistance thermometer Use a shielded multi core twisted pair control cable with a minimum conductor size of 0 5 mm2 e g LIYCY 4 x 0 5 mm2 Connect the conductivity electrode as shown...

Page 34: ... supply voltage Connecting the actual value manipulated variable output 4 20 mA Please note the load resistance of max 500 W Use a shielded multi core twisted pair control cable with a minimum conductor size of 0 5 mm2 e g LIYCY 2 x 0 5 mm2 Maximum cable length 100 m Route connecting cables separately from power cables Connecting the standby input 24 V DC 24 V DC input for external command Control...

Page 35: ... Fig 16 to Fig 18 Wire the 9 pole D sub connector as shown in Fig 15 Connect the earthing point of the housing URB 55 to the central earthing point in the control cabinet Connect the shield just once to the central earthing point in the control cabinet Route connecting cables separately from power cables Connecting the SPECTORmodul bus system Using the supplied data cable 5 m connect the URB 55 to...

Page 36: ...an change the input and function of the LRR 1 52 LRR 1 53 conductivity controller at any time using code switch D see Fig 19 Make changes before installing the conductivity controller when access is easier You will need the following tools Slotted screwdriver size 2 5 fully insulated Phillips screwdriver size 1 fully insulated Proceed as follows 1 Switch off the supply voltage to the equipment or ...

Page 37: ... alarm factory setting ON MIN relay output for actuating an intermittent blowdown valve OFF Node ID 72 ON Node ID 69 compatibility with older equipment factory setting OFF Terminal 3 4 Out 2 as actual value output X factory setting ON Terminal 3 4 Out 2 as manipulated variable output Yw OFF Electrical conductivity measured in µS cm factory setting ON Electrical conductivity measured in ppm Control...

Page 38: ...38 LRR 1 52 LRR 1 53 URB 55 Installation Operating Manual 850645 01 Status display on the LRR 1 52 LRR 1 53 Fig 20 Multicolour LED orange green red orange power up green running red malfunction LRR 1 52 ...

Page 39: ... the controller s the LED first lights up orange then green The home screen of the URB 55 visual display and operating unit appears If two controllers are connected to the visual display and operating unit both controllers will be shown see example If you tap one of the controller over view screens a full screen for that controller will open on the display see screenshot below If just one controll...

Page 40: ...indow shows operating states and actual values The icons open the associated parameter screens These icons change dynamically and are either shown or hidden depending on the current page and configuration All entries and actions e g opening setup menus and parameter screens are initiated by tapping the buttons and input fields The active screen has a grey background see above You can close smaller...

Page 41: ...g on the display for one hour the program automatically returns to the home screen If communication to the controller is disrupted the message Offline appears in the general display area Entering parameters using the virtual keypad Tapping an input field opens a numeric virtual keypad The keypad shows the old value Old and the limits Min Max Your entries must remain within these limits Function ke...

Page 42: ...nutes you will be logged off again Factory set password PWL 111 Recommendation for initial setup Log on using the factory setting then safeguard your system by setting your own password Disabling parameter entries after successful Scroll bar for long lists and menus You can use the scroll bar to navigate up and down long lists and menus to select the desired parameters Scroll bar login Parameter e...

Page 43: ...valve mode is possible Setup settings Valve mode Only pump or valve mode is possible Home screen Controller parameters Level controller 3C controller parameters Conductivity controller Open valve Close valve Logged in with password Log off Alarm history Info Reset alarm Time Alarm number Password Alarm coming Network Alarm going Modbus TCP overview optional Reset alarm ...

Page 44: ...rate Apply entry Confirm entry Steam flowrate Switch on Inlet control Switch off Discharge control Datalog Trend Pump OFF threshold Electrode calibration Pump ON threshold Set point Stop pump in manual mode Manual mode Start pump in manual mode Max alarm switchpoint Off On Automatic Min alarm switchpoint Off On Relay test Max switchpoint Proportional band Min switchpoint Reset time Set point Valve...

Page 45: ...00 Valve electrode raw value Damping Correction factor Temperature compensation On Off Temperature coefficient Measuring range setup Automatic intermittent blowdown Intermittent blowdown pulses Intermittent blowdown time Intermittent blowdown active Pulse interval 24h flushing active Controller on standby Operating position of continous blowdown valve Controller in manual mode Fig 22 ...

Page 46: ...he status of the connected electrode Opening the parameter screens Use the following buttons to open the controller parameter screens Switchpoints see page 53 Trend see page 55 Test Controller information see page 56 Valve control see page 57 Calibration of conductivity electrode see page 59 Set controller parameters see page 62 Set automatic intermittent blow down see page 63 Further icons appear...

Page 47: ... of the alarm and error list Alarms and error messages are entered in the columns Coming Going Reset with a time stamp The most recent alarm is always shown at the top of the list Description of display The alarms are stored in the list with a code A alarm E error Coming Time at which the event occurred Going Time when the event ended Reset Date and time the event was acknowl edged and reset Optio...

Page 48: ...al 850645 01 Alarms and error messages Opening the Alarm History full list of all alarms All alarms are stored in an Alarm History There is memory capacity for 300 alarms Alarms are stored in cycles and resto red after a power failure Open the Alarm History ...

Page 49: ...p the line with the URB 55 for 2 s to see the runtime and OS of the URB 55 Opening further menus System information Set the date time Password Network settings Open Modbus TCP list optional System information Open the System Information menu and select the desired action Description of display The connected controller s are shown with their software version Press the button to update a system or v...

Page 50: ...ed settings Description of display settings Time Date Tap the appropriate field and set the date and time Confirm these changes to apply them Password Open the Password menu Factory setting 111 Changing your password 1 Tap the input field 2 Enter the new password in the top line and confirm it by entering it again in the second line ...

Page 51: ...No Static IP address Yes The IP address is obtained via DHCP IP Address The IP address of the URB 55 Subnet mask The current subnet mask Gateway The IP address of the gateway The URB 55 visual display and operating unit has a Modbus TCP server This enables all values to be forwarded to a higher level control system or control centre For Modbus communication switch on the connection using the TCP O...

Page 52: ...er To access the URB 55 use the previously set network parameters You also need to switch on the service Data exchange via Modbus TCP If Modbus communication has been switched on you can open the dynam ic datapoint list The raw data from the register is shown on this screen There is a scroll bar at the side for scrolling through the data You can find the latest datapoint list on our website at htt...

Page 53: ... Set point MIN alarm switchpoint For each switchpoint press the relevant button and enter the required value using the virtual keypad The icons in the buttons change colour to indicate switchpoints alarm points that are too high or too low Description of bar charts X Actual value W Set point The set point is shown in the actual value bar chart with a small arrow Yw Manipulated variable Change of c...

Page 54: ...n the home screen This is also the case for all further 24h flushing Display of remaining valve runtime Ti if 24h flushing is switched on Automatic Manual mode The controller is normally in Automatic mode Press the button to switch the controller to Manual mode Entering the manipulated variable Here you can enter the valve position or manipulated variable in the input field that opens Valve contro...

Page 55: ...urve of the actual value X set point W manipulated variable Yw and alarm limits over a 7 day period The sampling rate is 5 seconds Options Open the associated key Open a menu bar with further functions Navigation Navigate forwards and backwards on the time axis using these buttons or by swiping horizontally Zoom the display in out using these buttons or using two fingers pinch gesture Close the vi...

Page 56: ...n the controller The relevant icons are shown in the top part of the screen depending on the configuration example The relay in the controller remains active as long as you are pressing the button Actual value output 4 20 mA display of current actual value X or Manipulated variable output 4 20 mA display of current manipulated variable Yw Controller software version 311178 13 or later View if conf...

Page 57: ...vate 24h flushing Press the button to activate 24h flushing Flushing interval Flushing time Setting the flushing interval and flushing time You can enter the desired time within their limits in the input fields When the set interval has elapsed the flushing in terval is activated and moves the valve to Open for the set time When the set flushing interval has elapsed the valve returns to the Closed...

Page 58: ...Calibrated valve positions The calibrated raw data is shown in both fields Raw data Indicates the current digital valve position Performing calibration 2 Press the Automatic button and switch to manual mode 3 Enter 0 as the manipulated variable Yw 4 When the valve is in the CLOSED end position confirm the valve position 5 The raw data from the central field is automatically entered in the 0 CLOSED...

Page 59: ...ction factor C see page 60 During operation the indicated con ductivity may differ from the reference reading obtained from a reference measurement e g due to soiling When the correction factor is entered the display is adapted to the currently measured conductivity Measuring range dependent on controller see page 61 Enter the measuring range for your particular conductivity controller Temperature...

Page 60: ...type in the correction factor C or Enter the reference reading XRef you previ ously measured Display after entering reference reading XRef Confirm the calculated correction factor C Reject the calculated correction factor C Display when limit is exceeded If correction factor C exceeds the limit 5 1 cm a warning appears In this case you have no choice but to reject the calculated correction factor ...

Page 61: ...put field and set the desired 100 measuring range Setting the measuring range LRR 1 53 1 First bring the conductivity transmitter into service To do this read the relevant Installation Operating Manual 2 Tap the input field You will see the screen containing factory set measuring ranges 3 Tap the measuring range that is set on the conductivity transmitter ...

Page 62: ...nd is then 600 µS cm or in the range 2400 µS cm to 3600 µS cm Reset time Ti higher Slow correction of deviations Responds quickly lower Fast correction of deviations the control loop may tend to overshoot Responds slowly Neutral zone higher Correction of deviations starts with a delay In this range the manipulated variable does not change Responds only if the control deviation is greater than the ...

Page 63: ...o Manual Switch between automatic intermittent blowdown and manual mode Description of parameters Initiate intermittent blowdown manually The display lights up orange when intermittent blowdown is active or has been initiated manually Intermittent blowdown interval in hours Intermittent blowdown time in seconds The intermittent blowdown valve is switched on regularly at set intervals and opens for...

Page 64: ...ectrical connection or Switch off temperature compensation E 005 Faulty conductivity electrode measuring voltage 0 5 V DC Check conductivity electrode and replace if necessary Check electrical connection Faulty conductivity transmitter measuring current 4 mA Check conductivity transmitter and replace if necessary Check electrical connection E 001 Faulty conductivity electrode measuring voltage 7 V...

Page 65: ... URB 55 with the USB stick inserted and perform the desired action again The USB stick must have the file format FAT32 The USB stick may not be suitable for this data transfer The home screen remains blank Remedy The URB 55 is not properly connected to the data interface When two units are connected the conductivity controller does not switch Incorrect parameter display Remedy Reboot the URB 55 ...

Page 66: ...on interference sources etc Wiring Does the wiring conform to the wiring diagrams Do the signal lines have the correct polarity Configuration on the conductivity controller Are the inputs and functions correctly set on code switch D Configuration of electrodes Are the electrodes correctly set and has the measuring range been calibrated DANGER DANGER There is a risk of electric shock during work on...

Page 67: ...king the LRR 1 52 LRR 1 53 out of service 1 Switch off the supply voltage and switch off the power to the equipment 2 Check that the equipment is not live 3 Unscrew and pull off the lower terminal strip see Fig 8 A B 4 Release the slider holder on the base of the equipment and detach the conductivity controller from the support rail Taking the URB 55 out of service 1 Switch off the supply voltage ...

Page 68: ...A AG can accept returned products only if accompanied by a completed and signed return note and also a completed and signed declaration of decontamination The return confirmation and declaration of decontamination must be attached to the outside of the return package as processing will otherwise be impossible and the products will be returned to the sender at their expense Please proceed as follow...

Page 69: ...n the conformity of our equipment with European Directives The current Declaration of Conformity can be found online at www gestra com or can be requested from us EU Declaration of Conformity URB 55 We hereby declare that the URB 55 visual display and operating unit conforms to the following European Directives Directive 2014 30 EU EMC Directive Directive 2011 65 EU RoHS Directive Please see our D...

Page 70: ...70 LRR 1 52 LRR 1 53 URB 55 Installation Operating Manual 850645 01 For your notes ...

Page 71: ...71 LRR 1 52 LRR 1 53 URB 55 Installation Operating Manual 850645 01 For your notes ...

Page 72: ...emen Germany Telefon 49 421 3503 0 Telefax 49 421 3503 393 E Mail info de gestra com Web www gestra com 850645 01 04 2021cm 809092 01 GESTRA AG Bremen Printed in Germany You can find our authorised agents around the world at www gestra com ...

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