Troubleshooting - PCE Instruments PIP 2 Manual Del Usuario

 Never force the volume setting beyond its
recommended limits.
 When pipetting liquids with temperatures
different from the ambient temperature, it
is recommended to pre-rinse the tip
several times before use.

Do not pipette liquids with temperatures
above 70°C.
 When pipetting acids or corrosive solu-
tions which emit vapours, it is recom-
mended to disassemble the shaft and to
rinse the piston and seal with distilled
water after finishing the pipetting
operation.

8 TROUBLESHOOTING

If there is a leak or the pipette is not
accurate, check for the following :
 The connecting nut is loose. Fig. 3B.
Tighten the connecting nut.
 The shaft is cracked or scored. Remove
the tip ejector and inspect the shaft. For
the PIP 2, PIP 10 and PIP 20 models, if
the shaft is damaged, the piston may
also be damaged. Replace the damaged
parts (see Section 10).
Whenreassembling the pipette, the nut
should be hand tightened
 Chemical damage to the piston and seals
Replace the piston and seals (See
Section 10). Wash the inside of the shaft
using distilled water.
 Improper reassembly.
Disassemble the pipette and reas-
semble the pipette correctly. Fig. 3.
If there is liquid in the shaft, clean the pipette
as follows :
 Remove the tip ejector. Unscrew the shaft
nut and rinse the shaft, piston, seal and O-
ring with distilled water. Dry these parts
and reassemble the pipette.
Note : If necessary, the shaft, shaft nut
and the tip ejector can be autoclaved for
23
20 minutes at 121°C and at 1 bar