Troubleshooting, Fault possible cause remedy – VACUUBRAND VacuuHandControl VHCpro User Manual

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Fault

Possible cause

Remedy

❑ No aspiration at

the VHC

pro

, pipette

drips.

➨ Adapter or aspiration

tube defective?

✔ Replace adapter with

aspiration hose.

➨ 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.

❑ Broken pipette in

the adapter.

➨ The pipette was dam-

aged or forced into the

adapter?

✔ Remove the glass splin-

ters by means of for-

ceps, replace adapter

and aspiration hose if

necessary.

Troubleshooting