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5790 733 - 07
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Service
CAUTION
Scratches in the combustion chamber can lead to
corrosion. Do not allow any tools or other objects to
fall into the combustion chamber.
CAUTION
Scratches on parts that come into contact with flue gas
can lead to corrosion. Use only plastic brushes;
do not use metal brushes or sharp objects.
Cleaning the Combustion Chamber and Heating Surfaces
Cleaning the combustion chamber and heating surfaces
Thoroughly clean the combustion chamber and heating
surfaces with a water jet.
Note:
Scratches on parts that are in contact with flue gas
can lead to corrosion. Only use plastic brushes, not
wire brushes nor sharp objects.
For normal cleaning, flush the heating surfaces thoroughly
with a water jet. You may use cleaning agents if you
notice stubborn residues, surface discoloration or soot
deposits. For this, observe the following:
■
Only use solvent-free cleaning agents. Ensure that no
cleaning agent gets between the boiler body and the
thermal
insulation.
Note:
The cleaning agent must not contain hydrocarbon-
based solvents or potassium.
Follow the cleaning agents instructions.
■
Remove deposits of combustion by-products with
alkaline
agents.
■
Remove coatings and surface discoloration (yellowish
brown) with phosphoric acid-based Antox 75 E Plus
or citric acid-based CitriSurf 3050 or CitriSurf 77 by
Stellar Solutions Inc.
■
Rinse thoroughly with water.
Checking gaskets and thermal insulation parts
1. Check gaskets and the sealing rope for damage.
2. Check the thermal insulation components for possible
damage.
3. Replace any damaged parts.
