Troubleshooting - BRAND PLT unit Instrucciones De Manejo

Errors during pipette tests
Problem
Test interruption
Measure leak rate
implausible
PLT doesn't react at all,
or behaves unusually.
Note: If the error cannot be resolved by the measures described, send the instrument out for repair.
Error display
Error
Test cancelled: Leaka-
ge rate not measu-
rable!
back

Troubleshooting

Possible cause
No pipette in adapter,
or not inserted firmly
enough
Tested pipette is com-
pletely leaky
Tip does not seal onto
shaft
Wrong pipette type
adjusted
Pipette adapter not
leak-tight
Pipette adapter is loose Tighten the lock nut
Moisture in the mea-
surement room, adapter
filter is clogged.
with 5 ml and 10 ml
pipettes: Measurement
pressure too strong
for the piston spring.
Piston drawn downward
when pumping down.
Moisture or leaks in the
PLT unit
Software error, electri-
cal malfunction
Corrective action
Insert pipette firmly
enough
Pipette is defective, and
cannot be tested with this
testing instrument. Send
the pipette out for repair.
Insert another tip Check
shaft for damage
Select correct pipette
type in the menu.
Check adapter for lint
or abrasion, and check
filter for moisture. Clean
adapter and exchange
filter. Perform self-test.
firmly. Perform self-test
Exchange adapter filter,
perform self-test. (Quick
Test)
Set the pipette type to
'5ml soft' or '10 ml soft'.
Perform self-test (Full
Test).
Disconnect all cables
from the instrument. Re-
connect the power cable
after approx. 5 seconds.
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