7
M
aintenance and fault recti
fi
cation
7
.
1
M
aintenance
W
hen the device is used correctly
,
no maintenance is required in
normal operation
.
7
.
2
R
ectify malfunctions
T
he operator of the system is responsible for taking suitable measures
to remove interferences
.
T
he
fi
rst measure to be taken is to check the output signal
.
I
n many
cases
,
the causes can be determined this way and the faults recti
fi
ed
.
E
rror
C
ause
R
emoval
VEGAMIP
61
signals
"
covered
"
when the vibra
-
ting element is not sub
-
merged
(
over
fi
ll protection
)
or
VEGAMIP
61
signals
"
uncovered
"
when the vib
-
rating element is submer
-
ged
(
dry run protection
)
O
perating voltage too low
C
heck operating voltage
B
uildup on the sensor
C
heck if there is buildup on the two sensors
,
and if so
,
remove it
.
W
rong mode selected
S
et the correct mode on the mode switch
(
max
.:
over
fl
ow protection
,
min
.:
dry run protection
).
W
iring
should be carried out according to the quiescent current
principle
.
U
nfavourable installation
location
M
ount the sensor
(
emitter
/
receiver
)
in a position where
there is a lot of measured product between emitting and
receiving unit
.
E
lectronics defective
P
ress the mode switch
.
I
f the instrument then does not
change the mode
,
the electronics module is defective
.
E
xchange the electronics module
.
S
ensor defective
P
ush the mode switch
(
min
./
max
.).
I
f the instrument
switches over
,
the sensor can be covered or mechani
-
cally damaged
.
S
hould the switching function on the correct mode be
wrong again
,
the you should return the instrument for
repair
.
S
ignal lamp lights red
O
perating voltage too low
C
heck operating voltage
E
lectronics module has
detected an internal failure
E
xchange the instrument or send it in for repair
I
nstrument switches de
-
layed
C
heck switching delay
A
djust switching delay correctly
R
eaction when malfunc
-
tions occur
F
ault recti
fi
cation
C
hecking the switching
signal
28
VEGAMIP U
61
• -
R
elay
7
M
aintenance and fault recti
fi
cation
-
EN
-
100531
