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8
Maintenance
z Remove hexagon bolts (Fig. 16, Item 1) from the
manual access cover (Fig. 16, Item 3).
z Remove the access cover, transport handle (Fig. 16,
Item 2) and access cover gasket (Fig. 16, Item 4)
from the DHW tank.
8.2
Cleaning the DHW tank
z Check the DHW tank interior for scale deposits
(calcium).
SYSTEM DAMAGE
through damaged surface finish.
z Never use hard objects or objects with
CAUTION!
sharp edges to clean the interior walls
of the DHW tank.
Should scale deposits be discovered inside the DHW
tank, proceed as follows:
z Hose down the interior of the DHW tank with a "hard"
cold water jet (approx. 58 – 72 psi pressure)
(Fig. 17).
You can increase the cleaning effect of the jet by
heating up the DHW tank before cleaning. The
thermo-shock effect releases scale deposits more
easily from the coil type heat exchanger. Remove the
residues with a wet & dry vacuum cleaner with plastic
suction tube or flush debris through the tank drain.
16
Installation and maintenance instructions Logalux ST400/3, 500/3, 750/3 and 1000/3 "US" • Issue 07/2005
1
2
3
4
Fig. 16 Removing the access cover
Item 1: Hexagon bolts
Item 2: Transport handle
Item 3: Hand hole cover
Item 4: Manual access cover gasket
Item 5: Magnesium anode
Fig. 17 Hosing down the inside of the DHW tank
We reserve the right to make any changes due to technical
5
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