Metrohm 887 Professional UV/VIS Detector - Manual (Page 38)

6.4 Replacing the VIS Lamp ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
30 ￭￭￭￭￭￭￭￭ 887 Professional UV/VIS Detector
Align the groove on the lamp socket with the bolt in the opening for
the UV lamp.
2 Fastening UV lamp
Slide the fastening ring over the cable of the UV Lamp and screw it
to the lamp cooling element.
3 Connecting the UV lamp
Plug in the plug of the UV Lamp into the connection socket UV of
the instrument and secure it with the fastening ring.
6.4 Replacing the VIS Lamp
Note
A description on how to replace the VIS lamp (6.2804.100) can be
found on the leaflet supplied with the VIS-lamp.
6.5 Adjusting the lamp settings
The lamp settings are set correctly at delivery.
Caution
The lamp settings must not be adjusted except in the following cases:
￭ After first start up, if the the check of the intensity spectrum shows a
cut-off (see Chapter 4, page 22).
￭ After having exchanged the UV lamp (see Chapter 6.3, page 27) or
the VIS lamp (see Chapter 6.4, page 30), if the check of the intensity
spectrum shows a cut-off (see Chapter 4, page 22).
Before each adjustment of the lamp values, it is mandatory to check the
intensity spectrum. The lamp settings may only be adjusted if the intensity
spectrum is cut off at the top.
Adjusting the lamp settings
Before you can adjust the lamp settings, all the following preconditions
must be unconditionally met:
￭ The UV lamp is burning for at least 30 minutes.
￭ The flow-through cell is clean.