CORREX UP 2.3-919 Instrucciones De Uso página 42

O O p p e e r r a a t t i i n n g g I I n n s s t t r r u u c c t t i i o o n n CORREX ® UP 2.3-919
4. Checking the insulation
a) Installed, non-enamelled electrical tubular heating elements or heat
exchangers
b) Titanium anode
Procedure: Set the measuring instrument to the resistance range. Drain off
the water to prevent indirect electrical contact via the water. Connect the
probe leads of the instrument (a) with the tubular heater and the enamelled
tank, or (b) with the titanium anode and the enamelled tank. Measure the
electrical resistance.
Nominal value: High resistance; value in the kilohm and partly also in the
megohm range for (a) and (b). With heat exchangers with potential adjusting
resistor: 600 ohms are possible.
Deviations from nominal value: Directly short-circuited heat exchangers or a
short-circuited titanium anode have resistances of practically zero ohm.
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