19
8 Malfunctions and faults
8
Malfunctions and faults
8.1
Malfunctions and faults
If it is not possible to rectify the malfunctions below, the product must be taken out of operation immedi-
ately and the manufacturer must be contacted. See the instructions regarding returns under
chapter 8.2 "Dismounting and return", Page 20.
Type of fault
Possible cause
Measure
Installation not possible
Process connection dimensions
incorrect
Contact the manufacturer
Change connection to tank or
container
Process connection at tank dam-
aged
Reworking of the thread
Installation of new process con-
nection
Process connection at product
damaged
Return to manufacturer
Guide tube too long or dimen-
sions incorrect
Contact the manufacturer
Switching function of float switch
faulty
Electrical connection faulty
Check terminal assignment and
startup according to
chapter 6.1 "Electrical connec-
tion", Page 14
Reed contact faulty
Return to manufacturer
Temperature contact/sensor
faulty
Return to manufacturer
Operation outside permissible
limits
Check and comparison of the op-
erating conditions with the re-
spective applicable technical
data of the product
Contamination or deposits on the
product
Carry out cleaning according to
chapter 7 "Operation and Clean-
ing", Page 18
Float faulty
(corrosion, overpressure)
Exchange or return
Temperature signal faulty
Temperature sensor faulty
Return to manufacturer
Cable break or short circuit
Check of the entire measuring
circuit; return to manufacturer in
event of faults
Output signal of level transmitter
faulty
Reed chain fault,
output signal according to
NAMUR NE43
(≤ 3.6 mA or ≥ 21 mA)
Return to manufacturer
Electrical connection faulty
Check terminal assignment and
startup according to
chapter 6 "Installation", Page 14,
taking the entire measuring cir-
cuit into consideration
Contamination or deposits on the
product
Carry out cleaning according to
chapter 7 "Operation and Clean-
ing", Page 18
Float faulty (corrosion, overpres-
sure)
Exchange or return to manufac-
turer
Electrical fault due to overvoltage
(e.g. thunderbolt)
Return to manufacturer
