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Vacuum Breaker Update

Major VersionM

by randy@lamarzocco.com

  1. Start by turning the steam module off and unplugging from the wall socket, allow the module to cool before performing this service task. Remove the drain, tap connections and water supply to the module so you can pull unit from installed position. Remove the top panel from the module using a #2 phillips drive or 2.5mm hex wrench depending on age of system. Now that the top of the boiler is exposed, remove the drain line from the Vacuum Breaker (VB), use small snips to cut the zip tie holding line in place.  Also remove the VB from the boiler with your 17mm wrench, loosen the VB from the bottom nut as shown.
    • Start by turning the steam module off and unplugging from the wall socket, allow the module to cool before performing this service task. Remove the drain, tap connections and water supply to the module so you can pull unit from installed position.

    • Remove the top panel from the module using a #2 phillips drive or 2.5mm hex wrench depending on age of system.

    • Now that the top of the boiler is exposed, remove the drain line from the Vacuum Breaker (VB), use small snips to cut the zip tie holding line in place. Also remove the VB from the boiler with your 17mm wrench, loosen the VB from the bottom nut as shown.

    • With the old VB removed, be sure the old copper crush washer is removed and install the new 1/4" Stainless Nipple in its place, new copper crush washer between the boiler and fitting. Tighten this fitting with good force, the crush washer is providing the seal here.

  2. Position the new VB assembly as shown and start threading the nut onto the 1/4" Stainless Nipple.  Tighten this with good force as well, but do not over-tighten to the point of slipping with your wrench as the nut is made from brass and is a softer metal. Attach the drain line back to the drain port on the VB assembly.  If you have a zip tie, tighten it down on the port as shown and trim any excess. Yours should look like the one in the picture.
    • Position the new VB assembly as shown and start threading the nut onto the 1/4" Stainless Nipple. Tighten this with good force as well, but do not over-tighten to the point of slipping with your wrench as the nut is made from brass and is a softer metal.

    • Attach the drain line back to the drain port on the VB assembly. If you have a zip tie, tighten it down on the port as shown and trim any excess. Yours should look like the one in the picture.

    • At this point you can put your top panel back in place and return the module to service. Always wait for the module to get up to full temp and check steam tap(s) before packing up your tools! If no leaks are found, round up your tools and enjoy your day you are finished!

Finish Line

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Member since: 07/22/2014

58 Guides authored

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