BUCHI SpeedExtractor E-916 - Manual (Page 84)

8 Troubleshooting
84 SpeedExtractor E-916/E-914 Operation Manual, Version D
8.1.7 Malfunctions of the rotating valves
The outlet and media valves are rotating valves with a defined start position. This reference point can
get lost. In consequence, the extracts are transferred in wrong position (e.g. into waste instead of
vials) for the outlet valve, or the solvent mixture at the media valve is misdirected to the nitrogen inlet
instead of the divider.
The rotating valves can be calibrated in the SERVICE menu. For this purpose, proceed as follows:
Go to MENU.
Select the SERVICE FUNCTIONS.
Select VALVES.
Push the right arrow button. First you see the solvent valves.
Press NEXT to get to the MEDIA VALVE display.
Press the down button to activate CALIBRATE and confirm
with SELECT.
You will hear the rotating valve finding the correct start position.
Proceed similarly with the outlet valve or when the message
"Outlet valve: connection lost" appears.
You will hear the rotating valve finding the correct start position.
NOTE
The firmware release FW 01.02 and later calibrate the rotating valves automatically at the first extrac-
tion or leak test (FW 01.03 and later) when the instrument is switched on. This reduces the chance of
malfunctions due to lost connections significantly.
8.1.8 Upgrading a 2-port mixer to a 4-port mixer
The SpeedExtractor E-916/E-914 is available with a 2- or a 4-port mixer. A BUCHI-approved service
technician can retrofit a 2-port configuration with a 4-port mixer (P/N 053381). Please contact the
local dealer or BUCHI customer service.