Autoclaving; Trouble Shooting Guide - VWR VWRA613-6688 Manual

7.8 AUTOCLAVING

This pipette is completely autoclavable at 1 bar pressure and
121°C temperature for 20 minutes exposure time.
AUTOCLAVING INSTRUCTIONS
Keep digital counter in unlock position.
Ÿ
Do not dis-assemble the pipette for autoclaving.
Ÿ
After autoclaving, allow the pipette to completely cool and
Ÿ
fully dry for a minimum of four (4) hours.
If the pipette is autoclaved frequently, the piston and springs
should be greased with supplied lubricant along with each
pipette to maintain smooth movement.

8 TROUBLE SHOOTING GUIDE

Problem area
Pipette is leaking
Pipette does not
aspirate the
solution
Pipette is
inaccurate
Inaccurate
dispensing with
certain liquids
Possible Cause
Worn o-ring or seal
Foreign particles between tip
and tip cone
Foreign particles between
piston and seal
Worn o-ring or seal
Tip cone is loose
Piston is damaged
(Chemically or mechanically)
Damaged tip cone
Improper assembly
Tip cone is loose
Tip incorrectly attached
Calibration altered
Calibration not suitable for
particular liquid
- 20 -
Solution
Replace worn parts
Clean tip cone, attach
new tip
Clean seal and piston
Replace worn parts
Tighten tip cone
Return pipette to
authorised distributor
Replace the tip cone
See "Maintenance"
section
Tighten tip cone
Attach firmly
Recalibrate according to
instructions
Recalibrate with the
liquid in question