Checking Gaskets And Thermal Insulation Components; Checking The Sensor Well And All Connections On The Heating Water Side For Leaks - Viessmann VITOCROSSAL 300 Service Instructions Manual

Further details regarding the individual steps
For this, observe the following:
– Only use solvent-free cleaning
agents. Ensure that no cleaning
agents enter between the boiler
body and the thermal insulation.
– Remove soot deposits with alka-
line cleaning agents with addi-
tional surfactants (e.g. Fauch
600).
– Remove coatings and surface
discolouration (yellow-brown)
with slightly acidic, chloride-free
cleaning agents based on phos-
phoric acid (e.g. Antox 75 E).
2. Remove loose deposits from the
boiler; flush the heating surfaces and
the flue gas collector thoroughly with
a water jet.

Checking gaskets and thermal insulation components

1. Check the gaskets and packing cord
in the boiler door for damage.
2. Check the thermal insulation compo-
nents on the boiler door for damage.
Checking the sensor well and all connections on the heating
water side for leaks
Danger
There is a risk of injury when
working on pressurised compo-
nents.
Only open the connections on the
heating water side after the boiler
has been depressurised.
Only drain the boiler with a suc-
tion pump when the boiler air vent
valve is open.
Commissioning, inspection, maintenance
Danger
Loose residues and residual
cleaning agents can lead to
injury.
Wear goggles, protective gloves
and protective clothing.
Cleaning agent manufacturer's
details.
Note
"Fauch 600" and "Antox 75 E"
Manufacturer:
Hebro Chemie GmbH
Rostocker Straße 40
D -41199 Mönchengladbach
3. Replace any damaged parts.
(cont.)
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