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Cleaning the inside of the DHW cylinder
B
A
C
Fig. 2
1. Drain the DHW cylinder on the DHW side.
2. Remove flange cover
ket
.
C
3. Disconnect the DHW cylinder from the pipework to
prevent cleaning agents and contaminants from
entering the pipework.
Checking and replacing the protective magnesium anode
Check the protective magnesium anode.
, earth cable
and gas-
A
B
Commissioning, inspection, maintenance
(cont.)
4. Remove loose deposits with a pressure cleaner.
!
Please note
Pointed or sharp cleaning tools will damage
the cylinder interior.
Only use plastic cleaning equipment to clean
the inside.
5. Use a chemical cleaning agent to remove hard
deposits that cannot be removed with a pressure
cleaner.
!
Please note
Cleaning agents containing hydrochloric acid
will attack the DHW cylinder material.
Never use such cleaning agents.
Danger
Cleaning agent residues can cause poison-
ing.
Always observe the information provided by
the cleaning agent manufacturer.
6. Fully drain all cleaning agent.
7. Flush the DHW cylinder thoroughly after cleaning.
We recommend replacing the protective magnesium
anode if it has eroded to a diameter of
10 to 15 mm.
≤
9
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