Instruction Manual

page 22 of 29
Fault Possible cause Remedy
❑
No aspiration at
the VHC
pro
. Pipette
drips.
➨
Adapter or aspiration
tube defective?
✔
Replace adapter with
aspiration hose.
➨
Aspiration hose kinked?
✔
Correct hose guide.
➨
Aspiration hose clogged
or agglutinated?
✔
Remove clogged or ag-
glutinated hose section
or replace hose.
➨
Pipette ts loosely or ts
bad?
✔
Connect pipette secure-
ly or choose an appro-
priate adapter.
➨
Leak in the system?
✔
Check the system for
leaks.
➨
No vacuum?
✔
Check the vacuum sys-
tem.
❑
Pipette does not
held properly in the
adapter.
➨
Adapter wet or greasy?
✔
Clean or replace adapter.
➨
Pipette with improper
diameter selected?
✔
Choose appropriate pi-
pette or change adapter.
➨
Seal at the nose cone
defectice?
✔
Replace nose cone.
❑
Liquid is aspirated
slowly or not.
➨
Pipette or nose cone
clogged or damaged?
✔
Clean or replace pi-
pettes or nose cones.
Troubleshooting