Bio-Rad BioLogic Signal Import Module (SIM) - Manual (Page 200)

MAINTENANCE MAINTENANCE AND TROUBLESHOOTING
11-7
11.4.2 Replacing the Lamp in the UV Detector
The following information covers the replacement procedures both for a new mercury lamp unit and a new
zinc lamp unit. Note that the zinc lamp assembly has cooling fins and is larger than the mercury lamp
assembly.
Indications that a lamp replacement is necessary include an unstable baseline and a decreased response to
a standard concentration of a test chromophore. In this latter case, it is advisable to ensure that the flow cell
is clean and that the correct wavelength filter is chosen before replacing the lamp. Refer to the previous
section.
Note: As indicated during the following procedure, make sure the DuoFlow Workstation is turned off.
This will eliminate the risk of electric shock, thermal burns, or UV light exposure to you or damage to the
detector during cable connection.
Figure 11-4. Replacing a Mercury Lamp in a Model OM-II UV Detector
Figure 11-5. Replacing a Zinc Lamp in a Model OM-II UV Detector
ZINC LAMP
HOUSING FILTER FLOW CELL
ZINC LAMP
FIXTURE
MERCURY
LAMP HOUSING