Grundfos S Serie Montage- Und Betriebsanleitung Seite 15

Fault
3. The output
signal is too
high.
4. The output
signal is too
weak.
5. Varying zero
point signal.
Possible cause
a) The measuring range
selected is too small.
b) The electrical
connection is faulty.
c) The supply voltage is
too high.
a) Current output signal
burden is too high.
b) The supply voltage is
too low.
c) The membrane is
damaged by
mechanical influences,
for example an
aggressive medium or
corrosion.
a) Medium and/or ambient
temperature is too high
or too low
b) Membrane
contaminated
c) The membrane is
damaged by
mechanical influences,
for example an
aggressive medium or
corrosion.
d) Moisture has entered
the product.
Remedy
The product is
defective. Contact your
local Grundfos sales
office.
Change the burden.
Change the supply
voltage.
The product is
defective. Contact your
local Grundfos sales
office.
The product is
defective. Contact your
local Grundfos sales
office.
Carefully clean the
membrane using a soft
brush or sponge with a
non-aggressive
cleaning agent.
The membrane must
not be damaged.
The product is
defective. Contact your
local Grundfos sales
office.
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