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PE
Fig. 13 Measurement of the protective direct current
intensity.
Replacement of the Protective
Magnesium Anode
Replace the protective magnesium anode every 18
months (regardless the measurement). In replace-
ment of the magnesium anode, you can use a tita-
nium anode, which you do not need to replace. Its
assembly should be carried out in accordance with
the assembly manuals of the anode manufacturer.
CAUTION
The replacement of the magnesium protec-
tive anode should be carried out at least once
every 18 months during the warranty period.
After the warranty expires, the frequency of
replacing the protective anode depends on
the degree of wear .Timely replacement and
correct installation are a condition for main-
taining the tank warranty.
When replacing the magnesium anode, follow the
procedure below (see Fig. 14):
1. In units with the electric heating unit installed, dis-
connect power from the unit fi rst.
2. Wait until the water inside cools down.
3. Cut-off the hot water supply and drain some wa-
ter from the tank through the drain valve (see Fig.
9, 10, 11 item QM1).
4. Remove the housing cover together with thermal
insulation (1).
5. Remove the anode protective conductor (2).
6. Remove the worn magnesium anode (3).
7. Screw the new magnesium anode.
8. Connect the anode protective conductor to the
storage tank.
9. Fill the tank with water and vent it as described in
par. "Start-Up".
10. Check tightness of the installed anode.
11. Reinstall the thermal insulation and the housing
cover.
Connect the anode protective conductor to the M5 pin
fi xed to the top head of the storage tank.
Once making the above steps, the storage tank is
ready to use.
12
Chapter 5 |
Maintenance
0,3 mA
M5 pin
CAUTION
Ensure that the anode protective conductor
is connected to the storage tank top head
after installing the new isolated magnesium
anode. Lack of connection of the anode with
the tank will completely block the work of the
anode and the tank will be deprived of corro-
sion protection.
1
Fig. 14 Replacement of the protective magnesium
anode.
Cleaning of the Storage Tank
During the use of the tank, the so-called boiler scale
precipitation occurs from the heated water. The
amount of deposited stone depends on the hardness
of water, working temperature and time of use. Cov-
ering the heating surfaces with stone reduces their
heating effi ciency, increases energy consumption
and lengthens the heating time. It is recommended
to clean the tank from accumulated deposits at a fre-
quency of at least once a year. In the case of hard or
very hard water, it is necessary to carry out cleaning
more frequently.
Storage tank cleaning procedure:
1. Prepare a new inspection opening gasket. The
old gasket may not be reused (for the list of the
inspection opening gaskets, see "Accessories
and Spare Parts").
2. In storage tanks with the electric heating unit in-
stalled, disconnect power from the unit fi rst.
3. Turn off the heating devices supplying the stor-
age tank and wait until the water inside the tank
cools down.
4. Cut-off the hot water supply and drain the storage
tank through the drain valve (see Fig. 9, 10, 11
item QM1)
5. Remove the inspection opening blanking plate
and gasket
6. Remove the inspection opening screws and
2
3
BA-ST 9022-9100-FE
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