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Wolf Convection Steam Oven Descaling


  • Descale Convection Steam Oven (CSO)
  • Best product to use when descaling oven cavity of Wolf Convection Steam Oven
  • Why is the interior of a Convection Steam Oven discolored?
  • How long does descaling take in a CSO?
  • How often to run descale program
  • Remove internal water system for cleaning


Descale Instructions

What is descaling?

  • Descaling does not clean the oven interior. Descaling removes mineral deposits from the mechanical parts of the unit.
  • It is not necessary to remove racks or pans for a descale cycle.
  • Lime deposits are a natural result of steam creation and will slowly build up inside of the external boiler and water lines.
  • The unit periodically needs to run a descale cycle to remove buildup.
  • Durgol® is the only suggested descaling solution at this time. The entire contents of the bottle must be used for each descaling. See Convection Steam Oven Descale Solution for information.
  • Vinegar should not be used to descale the Convection Steam Oven.​​
    • Vinegar may damage the unit and will not descale the unit as well as the descaling solution.
    • The descaling solution helps to protect against corrosion. Vinegar does not provide this protection.
  • Failure to descale appropriately will cause damage and impair function.

Descaling Information

When to descale:

  • How often the unit needs descaling will vary based on usage and water hardness, typically every 6-18 months.
  • Excess water use and frequent refilling of the water tank may be an indication that descaling is necessary.
  • "Boiler scaled up—please descale!" appears in the oven text display when it is time to run the descale program. Run the descale program at least as often as the message appears.
  • If no descale solution is on hand, the oven may be used normally, if needed. Be sure to descale the unit as soon as possible after obtaining the descale solution.
  • Descaling more frequently will not damage the unit.
  • Demineralized, reverse-osmosis filtered, or distilled water should not be used in the oven. Refer to Convection Steam Oven Water Requirements for more information.

Note that descaling cannot be canceled once it is started.

  • Descaling takes about 45 minutes if only one rinse cycle is needed.
    • If the unit determines more rinse cycles are necessary, then the time needed will increase.
    • Depending on the number of additional rinses, the descale process may last an additional 30 minutes.
  • For safety reasons, the descale program cannot be interrupted.
    • "Descaling aborted" appears in the display if the unit is turned off in the middle of the descale cycle.
    • Even if power is disconnected to the unit, Descale mode will restart and the full descale cycle will be run after power is restored.
  • The amount of time required for the descale process may vary based on the amount of mineral buildup in the unit.
  • It is not necessary to rinse the unit more than the descale program requests, but it can be done by starting another descale cycle.
  • Wolf suggests running the cleaning process immediately after the solution is put into the unit.

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