SICK LFV 230 Manual De Instrucciones página 18

6 Maintenance
The test magnet changes the current switching
condition of the instrument. You can check the
change on the signal lamp. Please note that
all connected device are activated during the
simulation.
Caution:
It is absolutely necessary that you remo-
ve the test magnet from the instrument
housing after the simulation.
5.3 Function table
The following table provides an overview of
the switching conditions depending on the set
mode and the level.
Level Swit-
ching
status
Mode closed
max.
Mode open
max.
Mode closed
min.
Mode open
min.
Fault any open
6 Maintenance
6.1 Maintenance
Maintenance
If the device is used properly, no special mainte-
nance is required in normal operation.
18
Control Con- Con-
lamp trol trol
lamp lamp
Yellow
- co- Green Red -
verage - vol- Fault
tage signal
indica-
tion
any
Cleaning
The cleaning helps that the type label and mar-
kings on the instrument are visible.
Take note of the following:
•
Use only cleaning agents which do not cor-
rode the housings, type label and seals
•
Use only cleaning methods corresponding
to the housing protection rating
6.2 Rectify faults
Observe the signal lamp. Often the reason for
the fault can be detected.
Error Cause
Green sig- Voltage
nal lamp off supply inter-
rupted.
Electronics
defective
Red signal Error with
lamp lights the elec-
(switching trical
output high- connection
impedance)
Shortcircuit
or overload
Red sig- Vibrating
nal lamp frequency
flashes out of speci-
(switching fication
output high-
Buildup on
impedance)
the vibrating
element
Vibrating
element da-
maged
7 Dismount
7.1 Dismounting steps
Warning:
Before dismounting, be aware of dan-
gerous process conditions such as e.g.
pressure in the vessel, high temperatu-
res, corrosive or toxic products etc.
Take note of chapters " Mounting" and " Con-
necting to voltage supply" and carry out the
listed steps in reverse order.
Rectification
Check the voltage supply
and the cable connection
Exchange the instrument
or send it in for repair
Connect the instrument
according to the wiring
plan
Check the electrical con-
nection
Check the vibrating ele-
ment on buildup and
remove it
Check the vibrating ele-
ment and the sensor if
there is buildup and re-
move it
Check if the vibrating
element is damage or ext-
remely corroded
LFV 230 • Hygienic version