BUCHI UV-Vis Detector C-640 - Manual (Page 36)

6 Maintenance and repairs
36 C-640 Operation Manual, Version A
1
- Loosen the screw a on the lamp holder just so far that the
lamp holder becomes turnable.
- Turn the bottom of the lamp holder slightly in your direction
(see next picture) so that the two screws holding the lamp
become accessible.
1
2
- Unscrew the two screws a and b at the bottom of the
lamp holder and take them away.
1
2
Note
The deuterium lamp has a small groove on one a side that
fits a small metal pin on the lamp holder b, guaranteeing a
correct positioning of the lamp in the lamp holder.
- Carefully pull the lamp out of the lamp holder and discon-
nect the quick coupling of the cable, the lamp is connected
to. Replace the lamp by a new one and assemble it, follow-
ing these instructions in reverse order.
Note
Never touch the glass parts of the lamp with bare fingers!
After the lamp has been replaced successfully, switch the
instrument on, allowing the lamp to stabilize for approxi-
mately one hour. After that the lamp life time and the light
intensity can be adapted in the calibration menu.
Figure 6-3: Removing the deuterium lamp from the instrument
Notice
Risk of instrument damage by wrong handling.
• After correct assembly of the replacement lamp don’t forget to reattach the grounding cable
to the housing and make sure no cable extends to one of the fan housings on the back side of
the instrument before fixing the housing.