BrandTech Scientific PLT unit Pipette Leak Testing Unit - Manual (Page 63)

E
ng
lis
h
Test interruption No pipette in adapter,
or not inserted firmly
enough Insert pipette firmly
enough
Tested pipette is com-
pletely leaky Pipette is defective, and
cannot be tested with this
testing instrument. Send
the pipette out for repair.
Tip does not seal onto
shaft Insert another tip Check
shaft for damage
Wrong pipette type
adjusted Select correct pipette
type in the menu.
Pipette adapter not
leak-tight Check adapter for lint
or abrasion, and check
filter for moisture. Clean
adapter and exchange
filter. Perform self-test.
Pipette adapter is loose Tighten the lock nut
firmly. Perform self-test
Moisture in the mea-
surement room, adapter
filter is clogged. Exchange adapter filter,
perform self-test. (Quick
Test)
with 5 ml and 10 ml
pipettes: Measurement
pressure too strong
for the piston spring.
Piston drawn downward
when pumping down. Set the pipette type to
'5ml soft' or '10 ml soft'.
Measure leak rate
implausible Moisture or leaks in the
PLT unit Perform self-test (Full
Test).
PLT doesn't react at all,
or behaves unusually. Software error, electri-
cal malfunction Disconnect all cables
from the instrument. Re-
connect the power cable
after approx. 5 seconds.
Troubleshooting
Problem Error display Possible cause Corrective action
Error
Test cancelled: Leaka-
ge rate not measu-
rable!
back
Errors during pipette tests
If the error cannot be resolved by the measures described, send the instrument out for repair. Note:
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