Magnesium Protection Anode; General; Testing The Magnesium Protection Anode - iDM iPUMP A 2-7 Installation Instructions Manual

1 0.1. Gen eral
The magnesium protection anode which is integrated
in the buff er of iPump A heat pumps 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.
1 0.2. Testi n g th e m ag n e s iu m prot e c t ion
a n o de
The integrated protection anode in the iPump A is
insulated. When the anode is installed, the protective
current (mA DC) can be checked with an anode tester
or multimeter. For this, the buff er must be fi lled with
water. The connection line (black) between the anode
and the buff er is terminated and the measuring inst-
rument is connected in series between the anode and
the buff er (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 buff er size, the electrical conductivity of
the water, the installation of brass immersion sleeves
or non enameled components. For the buff er of the
iPump A , the measured protective currents are in the
range of > 1 mA. As a critical lower limit, a protection
current of < 0.3 mA can be considered. Since then
no corrosion protection is given, the anode must be
replaced.
Typical measurements iPump A
Resistance R = 500 kΩ
Protection current I = 0,55 mA DC
Note of the buff er 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 buff er!
(C) IDM ENERGIESYSTEME GMBH

10. Magnesium protection anode

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
Anode_ Mg_5/4"_Ø33xL430/400 isoliert
MAGONTEC.0033023005000090
Item.nr. 540576
Installation instructions iPump A 2-7, 3-11
magnesium protection anode
49