Servicing The Product; Maintaining The Product; Fault Finding The Product - Grundfos S Serie Montage- Und Betriebsanleitung

6. Servicing the product

6.1 Maintaining the product

The level transmitters are maintenance-free.
The cleaning agent used must not attack the material on the
transmitter body or the seals.
Mechanical damage to the membrane and the cable must be
avoided.

7. Fault finding the product

DANGER
Toxic material
Death or serious personal injury
- Medium residuals may damage humans, the environment and
equipment.
CAUTION
Sharp objects
Minor or moderate personal injury
- Irreparable damage occurs if the membrane comes into contact
with sharp or hard objects.
Fault
1. No measuring
and/or output
signal.
2. Constant
output signal
even with
changes in
pressure.
14
Possible cause
a) The supply voltage is
too low
b) Open circuit, there is an
incorrect connection.
c) Mechanical, thermal or
chemical damage.
a) The measuring system
is destroyed by excess
pressure.
b) The output signal is
distorted as a result of
excess pressure due to
current limiting.
Remedy
Check the supply
voltage.
Check the connecting
cable.
The product is
defective. Contact your
local Grundfos sales
office.
The product is
defective. Contact your
local Grundfos sales
office.
Check the supply
voltage.