Kobold SCH Operating Instructions Manual

Kobold SCH Operating Instructions Manual

Pressure switch

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Operating Instructions
for
Pressure Switch
Model: SCH

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Summary of Contents for Kobold SCH

  • Page 1   Operating Instructions Pressure Switch Model: SCH...
  • Page 2: Table Of Contents

    Gold Plated Contacts (-213) .............. 13     SCH-EX- (EEx-d-Version) ..............13     Technical Information .................. 14     Technical Information SCH-Ex units ..........14     Order Codes ....................14     EU Declaration of Conformance ..............15    ...
  • Page 3: Note

     Operating Instructions 4. Regulation Use Any use of the “SCH”, which exceeds the manufacturers specification may invali- date its warranty. Therefore, any resulting damage is not the responsibility of the manufacturer. The user assumes all risk for such usage.
  • Page 4: Installation And Commissioning

    Observe the Accident Prevention Regulations.  Never use the pressure switches as a climbing aid.  KOBOLD Messring GmbH accepts no liability for non-compliance. page 4 SCH K03/0320...
  • Page 5: Mechanical Connection

    Use flat gasket ring screw. for higher pressure. Connection The differential Pressure Switches SCH- DDCM have 2x G 1/4 internal thread connections. Connect the high and the low pressure according to the marks. = high pressure = low pressure When connecting attention should be paid to the marks.
  • Page 6: Electrical Connection

    3-2 opens, 3-1 closes Attention! The Pressure Switches are precision instruments, set and adjusted at the factory. Do not open the device or re-set the varnished adjustment screw. This would alter the switching points and resetting would be necessary. page 6 SCH K03/0320...
  • Page 7: Setting The Switching Pressure

    Turning the setting spindle clockwise gives a lower switching point, turning anticlockwise gives a higher switching point. The scale should be used as a guide, for more exact settings you should use a manometer. SCH K03/0320 page 7...
  • Page 8: Setting Switching Difference (Only Model V)

    When the switching difference is changed, the lower switch-off point remains unchanged, the upper switching point is shifted by the switching difference. xd= switching difference (hysteresis) SP= switching point RSP= switch back point page 8 SCH K03/0320...
  • Page 9: Special Functions

    Changes to the setting spindle, to the setting of switching pressure, do not lead to changes in the switching intervals as the switching points are adjusted corre- spondingly. The switching differential of the individual microswitches corresponds to the switching differences listed under basic equipment. SCH K03/0320 page 9...
  • Page 10  Setting wheel II CCW-raise switching point at microswitch II Setting wheels I and II have an internal stop to ensure that the microswitches cannot be adjusted past their effective range. Attention: Note the sticker besides the plug connection of Pressure Switch. page 10 SCH K03/0320...
  • Page 11: Switching Interval And Schematic Wiring Diagrams

    Schematic wiring diagram C1 DCM6-217D-S Schematic wiring diagram C2 DCM6-217D-S Schematic wiring diagram C3 DCM6-217B-S Schematic wiring diagram C4 DCM6-217A-S Schematic wiring diagram D1 DCM6-217C-S Schematic wiring diagram D2 DCM6-217C-S Schematic wiring diagram D3 DCM6-217A-S Schematic wiring diagram D4 SCH K03/0320 page 11...
  • Page 12 Schematic wiring diagram for Option 217 page 12 SCH K03/0320...
  • Page 13: Gold Plated Contacts (-213)

    Switching capacity: min. 4 mA, 5 V ; max. 100 mA, 24 V At higher voltages and currents the gold layer on the contacts will be damaged. SCH-EX- (EEx-d-Version) Pressure switches in Ex version can be delivered only in a design tested by the IBExU.
  • Page 14: Technical Information

    (e.g. syphon). Max. ambient temperature: -25...+70 °C (-25...+60 °C for SCH-DGM) At ambient temperatures below 0°C ensure that no water condensation can arise in the sensor and in the switching device.
  • Page 15: Eu Declaration Of Conformance

    11. EU Declaration of Conformance We, KOBOLD Messring GmbH, Hofheim-Ts, Germany, declare under our sole responsibility that the product: Pressure Switch Model: SCH-... to which this declaration relates is in conformity with the standards noted below: EN 60335-1 (IEC 60335-1) Safety of household and similar Electrical appliances.
  • Page 16: Examination Certificate

    12. Examination Certificate page 16 SCH K03/0320...
  • Page 17 SCH K03/0320 page 17...
  • Page 18 18 SCH K03/0320...

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