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Steam Fill Probe Cleaning

Major VersionM

by randy@lamarzocco.com

  1. If the module has overfilled, it may be necessary to drain the module. The procedure for draining can be found here.
    • If the module has overfilled, it may be necessary to drain the module. The procedure for draining can be found here.

    • Shut down steam module by turning power switch to the middle position and let cool down.

    • Open the steam tap(s) and dispense until steam ceases. This will ensure that no steam pressure is built in the boiler.

    • If necessary due to space constraints: Turn off water supply to steam module and disconnect water line, drain line, and steam taps on the back of the module. Disconnect power cord from wall socket and move unit to a place where you can access all sides of module.

  2. Remove top panel from module to access fill probe and low level probe.
    • Remove top panel from module to access fill probe and low level probe.

  3. Locate the level probes, as shown in the following picture. Remove the wiring spade connectors from the probes. If the fill probe is not marked as shown, mark the probe so as not to confuse the wiring during re-assembly.
    • Locate the level probes, as shown in the following picture.

    • Remove the wiring spade connectors from the probes. If the fill probe is not marked as shown, mark the probe so as not to confuse the wiring during re-assembly.

  4. Using a 19mm wrench, remove the probe fitting as shown. Do not try to remove the probe from the fitting, as this may damage the teflon sleeve.
    • Using a 19mm wrench, remove the probe fitting as shown.

    • Do not try to remove the probe from the fitting, as this may damage the teflon sleeve.

  5. Using a scotch-brite pad or Emery Cloth with a little water scrub the level probes until all scale and buildup has been removed. Inspect the fill probe for any signs of damage or pitting. If the probe appears to be damaged, please contact Modbar support. Re-install the fill probes using the 19mm wrench, and reconnect the wiring using the markings from when the wiring was removed.
    • Using a scotch-brite pad or Emery Cloth with a little water scrub the level probes until all scale and buildup has been removed.

    • Inspect the fill probe for any signs of damage or pitting. If the probe appears to be damaged, please contact Modbar support.

    • Re-install the fill probes using the 19mm wrench, and reconnect the wiring using the markings from when the wiring was removed.

  6. Turn the power switch counter-clockwise to the left position, and allow the boiler to fill. The boiler should stop filling once the sight glass is approximately half full. If the boiler does not fill correctly, double check that the wiring is hooked up correctly and that each probe is in the correct spot. The bent probe should be on the right hand side, from the front of the machine. At this point, it is safe to turn the power switch clockwise to the right position. This will allow the boilers to heat.
    • Turn the power switch counter-clockwise to the left position, and allow the boiler to fill. The boiler should stop filling once the sight glass is approximately half full.

    • If the boiler does not fill correctly, double check that the wiring is hooked up correctly and that each probe is in the correct spot. The bent probe should be on the right hand side, from the front of the machine.

    • At this point, it is safe to turn the power switch clockwise to the right position. This will allow the boilers to heat.

    • Once the module has reached operating temperature, inspect around each probe for any signs of leakage. If a leak is found, it will be necessary to again open the taps and depressurize the boiler before attempting to fix the leak.

    • Replace the top panel and screws.

Finish Line

One other person completed this guide.

Modbar Support

Member since: 07/22/2014

58 Guides authored

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