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Elimination of operating faults
52
Operation Manual LVS 105 T
– 10 ef
+
7
Elimination of operating faults
OPERATING FAULTS IN DEVICE
►
Adhere to the instructions and notes in section 8 Maintenance!
►
To eliminate the operating faults within the device, the instructions and
notes in section 8 Maintenance and section Fehler! Verweisquelle konnte
nicht gefunden werden. Fehler! Verweisquelle konnte nicht gefunden wer-
den. must be adhered to.
Authorization to eliminate operating faults
1
: User/
(1)
: specially trained users only
2
: Specialized personnel
3
: Manufacturer
Type of error
Cause
Measure
Au-
tho-
rized
No display
There is no power
Check the correct connection of the
power cable (external), fuse
1
Internal check of electrical compo-
nents (e.g. power supply unit)
2, 3
Faulty display/con-
trol electronics
Replacement
3
Vacuum pump
does not start up
There is no power.
Check the correct connection of the
power cable (external), fuse
1
Motor defective
Replacement
3
Faulty pump unit
Repair or replace
2,3
Pressure setpoint
is not reached or
not reached suffi-
ciently fast
(vacuum pump
turns continuously
with maximum ro-
tational speed)
Pneum. connect-
ors/connections or
glass apparatuses
are leaky
Identify leaks and seal them; replace
damaged components where neces-
sary
1
Internal pneum. con-
nections are leaky
Check the hose connections between
the pump heads; replace the hoses
and screw fittings where necessary
2, 3
Contamination of the
internal components
of the vacuum
pump, e.g. valves
Clean with the self-cleaning operating
mode; see section
1
Faulty diaphragms
or valves
Replace the diaphragms/valves; see
section
2, 3
Vacuum application
too large or vacuum
pump capacity too
small
Adapt the vacuum application to the
characteristic data of the device
2
Evaporation rate too
high
Reduce evaporation rate
1
Water valve does
not switch despite
display
Faulty valve
(mechanical/electri-
cal)
Exchange the water valve; see sec-
tion
1