WIKA FLM - Handbuch (Seite 19)

GB
WIKA operating instructions level sensor model FFG 19
13445627.01 12/2010 GB/D/F
6. Maintenance
The level transmitters operate free of maintenance and wear when used
properly.
However, within the scope of routine inspections they should undergo
visual checks and be part of the container pressure test.
7. Trouble shooting
In the following table the most frequent failure causes and the required
corrective measures are listed.
Trouble Cause Measure of correction
No or
undefined
function
Incorrect terminal positioning
Compare with connecting
diagram
Insulation secured under
terminals
Check terminal points
Locating rings displaced or
incorrectly mounted after
removal from the guide tube
Check position of locating
ring
Incorrect
0 ... 100 %
values
Float wrongly mounted Turn float around
Incorrect specifications in
order
Contact factory
Waveguide in defective con-
dition caused by mechanical
interference
Return to factory
Incorrect setting Re-adjust or contact factory
Cannot be
attached to the
proper point
within
the container
Thread size or flange size
of WFFG-T...EX sensor and
container not conforming
Re-design the container
Re-design of level sensor
in factory
Thread of attachment sleeve
on container in defective
condition
Re-work thread or replace
mounting socket
Screw-in thread on level sen-
sor in defective condition
Return to factory
Please give us a call in case of any difficulties. We will do everything we
can to provide you with the required advice and help.
6. Maintenance / 7. Trouble shooting