BUCHI ELS Detector C-650 - Manual (Page 44)

C-650 Operation Manual, Version B 7 Maintenance 44
The time required for each step depends on the application, solvents, type and concentration of
the samples and should be determined accordingly.
NOTE
It is not necessary to access inside the device in routine operation. If the suggestions provided in
this chapter do not remedy the problem, contact your local distributor.
The LED used as the Light Source has a long but finite lifetime (~5000 hours) and should be
replaced periodically by a skilled technician. When this period has been reached, a message
indicating that the maximum usage of the lamp has been exceeded will be presented when the
unit is powered up and the orange LED on keyboard will blink.
7.1 Customer service
Only authorised service personnel are allowed to perform repair work on the device. These per-
sons have a comprehensive technical training and knowledge of possible dangers which might
arise from the device.
Addresses of official BUCHI customer service offices are given on the BUCHI website under.
www.buchi.com. If malfunctions occur on your device or you have technical questions or appli-
cation problems, contact one of these offices.
The customer service offers the following:
• Spare part delivery
• Repairs
• Technical advice