Beckman Coulter LH 780 Instructions Manual page 164

TROUBLESHOOTING
FLUSHING THE BACKWASH TANK VACUUM SUPPLY LINE
5-52
8. Press the Reset button on the Analyzer.
This will drain the Vacuum Overflow
Tank (VC22).
9. To confirm that the vacuum supply line
is open, perform Diluter Function F30
to activate the Backwash Tank Check
and verify that no error messages are
generated.
PN 773023AC