BrandTech Scientific Transferpette S - Manual (Page 46)

Troubleshooting
Problem Possible cause Corrective action
Tip dripping
(instrument leaks) Unsuitable tip Only use high-quality
tips
Tip not seated tightly Press tip on firmly
The instrument does
not aspirate or as-
pirates too little; the
discharged volume
is too low. Seal contaminated Clean seal
The seal or cone is
damaged Replace seal or shaft
The piston is contami-
nated or damaged Clean or replace piston
Aspiration is
too slow Shaft clogged Clean shaft
The filter in the 5 ml
and 10 ml models is
contaminated Change the filter
Discharged volume
is too large Pipetting button
pressed too far into
the blow-out position
before sample uptake Operate properly.
See 'Pipetting',
page 32.
Piston is difficult
to move The piston is contami-
nated or needs oil Clean and oil the piston
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