Beckman Coulter LH 780 Instructions Manual page 162

TROUBLESHOOTING
FLUSHING THE BACKWASH TANK VACUUM SUPPLY LINE
5-50
2. Remove the left-side Diluter cover by
lifting up and out on the panel.
3. Locate the VL107A, the white pinch
valve located above the Backwash Tank.
The top-fitting above VL107A is a
feed-through fitting marked FF-5.
4. Disconnect the I-beam from the FF-5.
PN 773023AC