Maintenance and Cleaning
COMBI ATMOSPHERIC STEAM GENERATOR DESCALING PROCEDURE (For DISSOLVE® Descaler Solution Part No. 106174)
WARNING
This procedure is slightly different depending on the model being descaled. This entire procedure should be read and fully understand as it applies to the model being descaled, before beginning the actual descaling operation.
This procedure will take approximately 3 hours to complete.
1.Turn ON the Combi at the Control Power Service Disconnect switch located below the hand shower. See Figure
2.Turn ON the COMBI with the ON / OFF key 
.
3.Open the door to the cooking compartment.
4.Run a manual steam generator rinse cycle. To Empty and Rinse the Steam Generator:
a.Press the Smart Key 
.
b.Select “Manual steam generator rinse” 
with the Selector Dial 
.
c.Confirm “Yes” with the Smart Key 
.
d.Steam generator will rinse and begin to refill to operating level.
4.Remove the cap from the descale port located at the top of the unit (See Figure
NOTE: DO NOT HEAT THE COMBI DURING
DESCALING.
5.While the unit is filling with water, use a funnel (NOT INCLUDED) to add 3/4 gallon of DISSOLVE® descaler solution into the descaling port of 20.20 COMBIs, and 1/2 gallon for all other models
•While adding liquid to the unit through the descaler inlets, pour slowly to avoid overflow.
Figure 6-1 Descaling Port
Located at Right Rear of the
Combi
• Wipe up any spills at once to avoid etching.
6.After the automatic fill cycle has ended, turn OFF the Combi with the ON / OFF key 
, and at the Control Power Service Disconnect switch located below the hand shower. See Figure
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