Troubleshooting, Fault possible cause remedy – VACUUBRAND 8-channel tip adapter with ejector User Manual

Page 22

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 fits loosely or fits

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