Grundfos LC 108 Installation And Operating Instructions Manual
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Grundfos LC 108 Installation And Operating Instructions Manual

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GRUNDFOS INSTRUCTIONS
LC 108
Installation and operating instructions
LC 108

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Summary of Contents for Grundfos LC 108

  • Page 1 GRUNDFOS INSTRUCTIONS LC 108 Installation and operating instructions LC 108...

  • Page 2: Table Of Contents

    Electrical connection Setting 2. General Control panel The LC 108 controller is designed for the control of pumps in Battery back-up functions wastewater, water supply and drainage systems. Reset button and ON-OFF-AUTO selector switch Type key: Systems with 4 float switches...

  • Page 3: Applications

    When installed outdoors, the LC 108 must be placed in a – dry running. protective shed or cupboard. As standard, the LC 108 has one alarm output for common alarm. The LC 108 must not be exposed to direct sunlight. Certain variants have an additional alarm output for separate high-level alarm.

  • Page 4: Mounting Of Lc 108 For Star-Delta Starting

    Figure shows the internal construction of the LC 108 for 3.3 Mounting of LC 108 for star-delta starting direct-on-line starting. Before mounting, remove the transport protectors, if any, from inside the cabinet. Mount the LC 108: • on a plane wall surface, •...

  • Page 5: Systems With 2 Float Switches

    Fig. on page 37. The figures show all electrical connections required to connect the LC 108 for direct-on-line starting, 2 float switches. Fig. on page 38. The figure shows all electrical connections required to connect the LC 108 for star-delta starting, 2 float switches.

  • Page 6: Setting

    4.2 Setting • Switches 5, 6 and 7, stop delay: When the DIP switch setting is changed, the controller must 2 float switches, pages and 38. be switched off for at least 1 minute! The CU 211 module has a 10-pole DIP switch in the bottom right corner, see fig.

  • Page 7: Control Panel 7 Caution

    AC/DC selector: 4.3 Control panel The AC/DC selector switch for electrodes and/or float switches is 2 float switches, pages and 38. placed as shown in fig. 6. Figure shows the control panel of the CU 211 module. CU 211 Fig. 7 Key to the symbols in fig.

  • Page 8: Battery Back-Up Functions

    4.2. The table below shows the situations which may occur if the normal electricity supply to the LC 108 fails and a back-up battery is connected: = the indicator light is off.

  • Page 9: Reset Button And On-Off-Auto Selector Switch

    4.5 Reset button and ON-OFF-AUTO selector switch 2 float switches, pages and 38. The reset button is a push-button for manual resetting of alarm signals to external alarm devices and the built-in buzzer (i.e. not for resetting of the alarm memory as this is reset by means of the ON-OFF-AUTO selector switch, see position OFF ( )).

  • Page 10: Systems With 3 Float Switches 10 Note

    The CU 211 module has a 10-pole DIP switch in the bottom right corner, see fig. 8. Before making any connections in the LC 108 or work on pumps, pits, etc., it must be ensured that the The controller must be off circuit to ensure the...
  • Page 11 Set the switches 1 to 10 as follows: • Switch 10, automatic restarting: When the DIP switch setting is changed, the controller must • Switches 1, 2 and 3, application type: be switched off for at least 1 minute! When the DIP switch setting is changed, the controller must be switched off for at least 1 minute! This setting enables automatic restarting after the PTC resistance/thermal switch of the motor has cut out the...

  • Page 12: Control Panel

    5.2. The table below shows the situations which may occur if the Green indicator light, indicating starting delay (flashing) normal electricity supply to the LC 108 fails and a back-up battery and pump operation (permanently on). is connected: Red indicator light, indicating pump fault.

  • Page 13: Reset Button And On-Off-Auto Selector Switch

    5.5 Reset button and ON-OFF-AUTO selector switch 3 float switches, pages and 40. The reset button is a push-button for manual resetting of alarm signals to external alarm devices and the built-in buzzer (i.e. not for resetting of the alarm memory as this is reset by means of the ON-OFF-AUTO selector switch, see position OFF ( )).

  • Page 14: Electrical Connection

    The float switches must be connected as NO contacts, i.e. brown Before making any connections in the LC 108 or and black leads, when float switches, Grundfos product number work on pumps, pits, etc., it must be ensured that the 96003332 or 96003695, are used.
  • Page 15 Each individual switch (1 to 10) of the DIP switch can be set to • Switch 10, automatic restarting: position OFF or ON. When the DIP switch setting is changed, the controller must be switched off for at least 1 minute! The DIP switch must not be set to other switch Note combinations than those described in this section.

  • Page 16: Control Panel

    6.2. The table below shows the situations which may occur if the Green indicator light, indicating starting delay (flashing) normal electricity supply to the LC 108 fails and a back-up battery and pump operation (permanently on). is connected: Red indicator light, indicating pump fault.

  • Page 17: Reset Button And On-Off-Auto Selector Switch

    6.5 Reset button and ON-OFF-AUTO selector switch 4 float switches, pages and 42. The reset button is a push-button for manual resetting of alarm signals to external alarm devices and the built-in buzzer (i.e. not for resetting of the alarm memory as this is reset by means of the ON-OFF-AUTO selector switch, see position OFF ( )).

  • Page 18: Systems With 2 Electrodes

    Caution correct configuration during start-up after change of Before making any connections in the LC 108 or the DIP switch setting. work on pumps, pits, etc., it must be ensured that the The DIP switch setting offers the following possibilities: electricity supply has been switched off and that it •...
  • Page 19 Set the switches 1 to 10 as follows: • Switch 10, automatic restarting: When the DIP switch setting is changed, the controller must • Switches 1, 2 and 3, application type: be switched off for at least 1 minute! When the DIP switch setting is changed, the controller must be switched off for at least 1 minute! This setting enables automatic restarting after the PTC resistance/thermal switch of the motor has cut out the...

  • Page 20: Control Panel

    2 electrodes, pages and 44. For these applications, the foil supplied with the LC 108 must be If a back-up battery for CU 211 (accessory for certain variants) is attached to the CU 211 control panel as shown in fig. 16. The foil installed, the following functions will be carried out if the normal can be found inside the LC 108 cabinet at the bottom.

  • Page 21: Reset Button And On-Off-Auto Selector Switch

    7.5 Reset button and ON-OFF-AUTO selector switch 2 electrodes, pages and 44. The reset button is a push-button for manual resetting of alarm signals to external alarm devices and the built-in buzzer (i.e. not for resetting of the alarm memory as this is reset by means of the ON-OFF-AUTO selector switch, see position OFF ( )).

  • Page 22: Systems With 3 Electrodes

    The controller must be off circuit to ensure the Before making any connections in the LC 108 or Caution correct configuration during start-up after change of work on pumps, pits, etc., it must be ensured that the the DIP switch setting.
  • Page 23 • Switch 4, starting delay and automatic test run (only in the AC/DC selector: case of battery back-up): The AC/DC selector switch for electrodes and/or float switches is When the DIP switch setting is changed, the controller must placed as shown in fig. 19. be switched off for at least 1 minute! At this setting, the start-up is delayed within the range from 0 to 255 sec.

  • Page 24: Control Panel

    3 electrodes, pages and 46. For these applications, the foil supplied with the LC 108 must be If a back-up battery for CU 211 (accessory for certain variants) is attached to the CU 211 control panel as shown in fig. 20. The foil installed, the following functions will be carried out if the normal can be found inside the LC 108 cabinet at the bottom.

  • Page 25: Reset Button And On-Off-Auto Selector Switch

    8.5 Reset button and ON-OFF-AUTO selector switch 3 electrodes, pages and 46. The reset button is a push-button for manual resetting of alarm signals to external alarm devices and the built-in buzzer (i.e. not for resetting of the alarm memory as this is reset by means of the ON-OFF-AUTO selector switch, see position OFF ( )).

  • Page 26: Systems For Filling Applications

    11-12 and 21-22. local regulations. 9.2 Setting Before making any connections in the LC 108 or work on pumps, pits, etc., it must be ensured that the Filling application, pages and 48.
  • Page 27 • Switch 4, starting delay and automatic test run (only in the AC/DC selector: case of battery back-up): The AC/DC selector switch for electrodes and/or float switches is When the DIP switch setting is changed, the controller must placed as shown in fig. 23. be switched off for at least 1 minute! At this setting, the start-up is delayed within the range from 0 to 255 sec.

  • Page 28: Control Panel

    Filling application, pages and 48. For these applications, the foil supplied with the LC 108 must be If a back-up battery for CU 211 (accessory for certain variants) is attached to the CU 211 control panel as shown in fig. 24. The foil installed, the following functions will be carried out if the normal can be found inside the LC 108 cabinet at the bottom.

  • Page 29: Reset Button And On-Off-Auto Selector Switch

    9.5 Reset button and ON-OFF-AUTO selector switch Filling application, pages and 48. The reset button is a push-button for manual resetting of alarm signals to external alarm devices and the built-in buzzer (i.e. not for resetting of the alarm memory as this is reset by means of the ON-OFF-AUTO selector switch, see position OFF ( )).

  • Page 30: Systems For Drainage Applications

    • setting of dead time (switches 4, 5 and 6), Before making any connections in the LC 108 or • setting of restarting time (switches 7, 8, 9 and 10). work on pumps, pits, etc., it must be ensured that the electricity supply has been switched off and that it cannot be accidentally switched on.
  • Page 31 • Switches 4, 5 and 6, dead time: AC/DC selector: When the DIP switch setting is changed, the controller must The AC/DC selector switch for electrodes and/or float switches is be switched off for at least 1 minute! placed as shown in fig. 27. The dead time is the time the pump is allowed to run after starting without a liquid flow being registered by the flow switch.

  • Page 32: Control Panel

    Drainage application, pages and 50. For these applications, the foil supplied with the LC 108 must be If a back-up battery for CU 211 (accessory for certain variants) is attached to the CU 211 control panel as shown in fig. 28. The foil installed, the following functions will be carried out if the normal can be found inside the LC 108 cabinet at the bottom.

  • Page 33: Reset Button And On-Off-Auto Selector Switch

    10.5 Reset button and ON-OFF-AUTO selector switch Drainage application, pages and 50. The reset button is a push-button for manual resetting of alarm signals to external alarm devices and the built-in buzzer (i.e. not for resetting of the alarm memory as this is reset by means of the ON-OFF-AUTO selector switch, see position OFF ( )).

  • Page 34: Start-Up

    Start-up must be carried out by authorized personnel. However, it is advisable to carry out minor checks of the LC 108 controller, pump pits, tanks, pumps, etc. at suitable intervals. Proceed as follows: These checks should be carried out by authorized personnel.

  • Page 35: Technical Data

    In stock: -30 to +60 °C. Enclosure class IP65. EMC (electromagnetic compatibility) According to EN 61000-6-2 and EN 61000-6-3. Cabinet LC 108 for direct-on-line starting • External dimensions: Height = 410 mm, width = 278 mm, depth = 150 mm. •...

  • Page 36: Fault Finding Chart

    Before making any connections in the LC 108 or work on pumps, pits, etc., it must be ensured that the electricity supply has been switched off and that it cannot be accidentally switched on.
  • Page 37 Appendix max. 230V max. 2A 1 2 3 4 5 6 7 8 9 10 LC 108 Ext. 1U2 1N2 1U2 1V2 Fig. 1...
  • Page 38 1 2 3 4 5 6 7 8 9 10 max. 230V max. 2A LC 108 Ext. L1 L2 L3 N PE Fig. 2...
  • Page 39 230V max. 2A LC 108 Ext. 1U2 1V2 1U2 1N2 Fig. 3...
  • Page 40 1 2 3 4 5 6 7 8 9 10 max. 230V max. 2A LC 108 Ext. L1 L2 L3 N PE Fig. 4...
  • Page 41 max. 230V max. 2A 1U2 1V2 1U2 1N2 Fig. 5...
  • Page 42 1 2 3 4 5 6 7 8 9 10 max. 230V max. 2A LC 108 Ext. L1 L2 L3 N PE Fig. 6...
  • Page 43 max. 230V max. 2A 1U2 1V2 1U2 1N2 Fig. 7...
  • Page 44 1 2 3 4 5 6 7 8 9 10 max. 230V max. 2A LC 108 Ext. L1 L2 L3 N PE Fig. 8...
  • Page 45 230V max. 2A LC 108 Ext. 1U2 1N2 1U2 1V2 Fig. 9...
  • Page 46 1 2 3 4 5 6 7 8 9 10 max. 230V max. 2A LC 108 Ext. L1 L2 L3 N PE Fig. 10...
  • Page 47 max. 230V max. 2A 1U2 1V2 1U2 1N2 Fig. 11...
  • Page 48 1 2 3 4 5 6 7 8 9 10 max. 230V max. 2A LC 108 Ext. L1 L2 L3 N PE Fig. 12...
  • Page 49 max. 230V max. 2A 1U2 1N2 1U2 1V2 Fig. 13...
  • Page 50 1 2 3 4 5 6 7 8 9 10 max. 230V max. 2A LC 108 Ext. L1 L2 L3 N PE Fig. 14...
  • Page 51 GB: EC declaration of conformity DE: EG-Konformitätserklärung We, Grundfos, declare under our sole responsibility that the products LC/ Wir, Grundfos, erklären in alleiniger Verantwortung, dass die Produkte LC/ LCD 107, LC/LCD 108, LC/LCD 109 and LC/LCD 110, to which this...
  • Page 53 Unit 1, Ground floor Turkey Av. Humberto de Alencar Castelo Branco, Siu Wai Industrial Centre GRUNDFOS Pumper A/S GRUNDFOS POMPA San. ve Tic. Ltd. Sti. 29-33 Wing Hong Street & Strømsveien 344 Gebze Organize Sanayi Bölgesi CEP 09850 - 300...
  • Page 54 96843432 0115 ECM: 1149289 www.grundfos.com...

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