(C) IDM ENERGIESYSTEME GMBH
10. Magnesium protection anode
Installation instructions iPump A 3-11
40
magnesium protection anode
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10. Magnesium protection anode
10.1. General
The magnesium protection anode which is integrated
in the buffer of the iPump A 3-11 must be checked
acc. to DIN 4753-3 for the
fi
rst time after two years
and a functional test must be done subsequently
every year. The exchange of the anode is described
on the next page.
10.2. Testing the magnesium protection ano-
de
The integrated protection anode in the iPump A 3-11 is
insulated. When the anode is installed, the protective
current (mA DC) can be checked with an anode tester
or multimeter. For this, the buffer must be
fi
lled with
water. The connection line (black) between the anode
and the buffer is terminated and the measuring inst-
rument is connected in series between the anode and
the buffer (contact closed). After about 30 sec., the
measured value is set.
Interpretation of the measurement results
The measured value depends on the quality of the
enamel, the buffer size, the electrical conductivity of
the water, the installation of brass immersion sleeves
or non enameled components. For the buffer of the
iPump A 3-11, the measured protective currents are
in the range of > 1 mA. As a critical lower limit, a pro-
tection current of < 0.3 mA can be considered. Since
then no corrosion protection is given, the anode must
be replaced.
Typical measurements iPump A 3-11
Resistance R = 500 k
Ω
Protection current I = 0,55 mA DC
Note of the buffer manufacturer
Please note that the measured protective current
indicates the function or malfunction of the magne-
sium protective anode, but there is no guarantee for
adequate protection conditions in the buffer!
Anode testing
An instruction to testing the anode can be seen under
the following link:
https://www.youtube.com/watch?v=ZwuTNWZ8e6o
Anode type for iPump A 3-11
Anode_ Mg_5/4“_Ø33xL430/400 isoliert
MAGONTEC.0033023005000090
Item.nr. 540576
