8 Troubleshooting
47
V-850 / V-855 Operation Manual, Version E
Error messages
Error message
Remedy
The pressure sensor is not working
Contact the BUCHI customer service.
The pressure sensor is not calibrated
Calibrate the pressure sensor as described in chapter
6.8. We recommend to have the simple and the complete
calibration carried out by the BUCHI customer service.
Data transfer error on the RS-485
Check whether the RS-485 cable is at the right place
and that only one vacuum controller is connected to it.
The AutoDest probe is not connected
Install the AutoDest probe as described in chapter 5.3.
Because of a leak the distillation process was cancelled
Retighten all connections and check all seals.
Excess pressure in the system
Let the pump run continuously until it has reduced the
system pressure.
There was a read/write memory error
Contact the BUCHI customer service.
8 .2
Customer service
Only authorised service personnel are allowed to perform repair work on the instrument. These
persons have a comprehensive technical training and knowledge of possible dangers which might
arise from the instrument.
Addresses of official BUCHI customer service offices are given on the BUCHI website under:
www.buchi.com. If malfunctions occur on your instrument or you have technical questions or applica-
tion problems, contact one of these offices.
The customer service offers the following:
• Spare part delivery
• Repairs
• Technical advice
