19
Burette Troubleshooting
PROBLEM
POSSIBLE CAUSE
SOLUTION
Piston diffcult to
move
Piston assembly is
contaminated or
damaged by crystal
deposits
Perform a cleaning
Replace the piston
assembly
Deposition of dirt
Filling not possible
Filling valve stuck
Clean the filling valve.
If the valve ball is stuck,
use a 200ul plastic tip
to loosen it
Air bubbles in the
instrument
Instrument filled to
quickly
Purging not complete
Filling tube loose or
damaged
Filling tube does not
dip into the liquid
Recirculation tube is not
mounted or mounted
improperly
Fill instrument slowly
Purge the instrument
again
Fasten the telescoping
filling tube firmly. If
necessary, cut the tube
off aprox. 1 cm from
the top of replace it
Fill up the bottle, or
correctly adjust the
length of the
telescoping filling tube
Attach the recirculation
tube. The opening must
point outward toward
the bottle wall
