DKSH LabPRO 2ml User Manual page 13

For single models
Symptom
Pipette is leaking sample Damaged tip-holder
Pipette won't aspirate
Pipette is inaccurate
Pipette is not precise
Tips fall off or do not
fit correctly
Pipetting seize up
For Multichannel models
Symptom
Tips fall off or
do not fit correctly
Pipette won't aspirate
Pipette is inaccurate
Pipette is not precise
Possible Cause
Worn O-ring or seal
Worn O-ring
Damaged tip-holder
Connecting nut is loose
Damaged or corroded piston Return pipette to supplier
Improper repair or assembly See Chapter 12 - Maintenance
Improper repair or assembly See Chapter 12 - Maintenance
Unscrewed tip-holder
Connecting nut is loose
Tip-holder is loose
Connecting nut is loose
Incorrect operator technique Operator training
Damaged or corroded piston(s) Return pipette to supplier
Damaged tip-holder(s)
Worn O-ring or seal
Low quality tips
Dirty tip-holder
Damaged tip-holder(s)
Damaged tip-ejector
The tip-ejector is loose
The ejector lock is misaligned Align the ejector lock
Piston need lubricant
Possible Cause
Low quality tips
Tip-ejector damaged
Ejector spacer damaged
Dirty tip-holder
Damaged tip-holder
Connecting nut is loose
Connecting nut is loose
Connecting nut is loose
Incorrect operator technique Operator training
USER'S
USER'S
GUIDE
GUIDE
Action
Replace the tip-holder
Replace both parts and lubricate
Replace both parts and lubricate
Replace the tip-holder
Tighten connecting nut
Tighten connecting nut
Tighten connecting nut
Tighten connecting nut
Tighten connecting nut
Replace the tip-holder
Replace both parts and lubricate
Use good quality tips to have opti-
mum results of the pipetting system
Clean the tip-holder with
isopropanol or ethanol
Replace the tip-holder
Replace tip-ejector
Assemble the tip-ejector properly
Lubricate piston assembly
Action
Use good quality tips to have opti-
mum results of the pipetting system
Replace tip-ejector
Replace ejector spacer
Clean them with ethanol or
isopropanol
Contact your local supplier
Tighten connecting nut
Tighten connecting nut
Tighten connecting nut
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