Troubleshooting - BRAND Transferpette-8 Operating Manual

11 Troubleshooting

11 Troubleshooting
Problem
Tip dripping (instru-
ment leaking)
The instrument
does not aspirate or
aspirates too little;
the dispensed vol-
ume is too low
Aspiration is very
slow
Dispensed volume
too large
Piston sluggish
Operating manual
60
Possible cause
Unsuitable tip
Tip not seated tightly
Seal contaminated
Seal or cone is dam-
aged
Piston is contaminated
or damaged
Shaft is clogged
Pipetting button
pressed too far (to the
over-stroke point) be-
fore aspirating
Piston is contaminated
or not greased
Corrective action
Only use high-quality
tips
Firmly press tip on
Clean seal
Replace seal or shaft
Clean or replace piston
Clean shaft
Ensure proper han-
dling.
Clean piston and apply
grease
Transferpette® S-8/-12 9974 89 V1