Bio-Rad Model EM-1 Econo™ UV Monitor - Manual

Case bottom
UV lamp
Lamp connector
Lamp holder
Flow cell
Filter tray
Fig. 1. Lamp assembly.
Rubber gasket
UV Lamp Replacement
To replace a lamp, proceed as follows, referring to Figure 1.
1. Turn power to UV Monitor “off”. Disconnect power cord from wall outlet.
2. Unplug the optics module from the rear panel of the unit.
Warning: Failure to unplug the optics module from the control unit may expose
the user to high voltage circuitry and UV radiation.
3. If the UV lamp has been on, allow the optics module to cool for 10 minutes
before continuing.
4. Remove the filter tray and flow cell.
5. Remove the screws holding the optics module together and remove the
bottom half of the case.
6. Pull the old UV lamp out of its holder and unplug it from its connector.
7. Plug the new UV lamp into its connector and insert it into the lamp holder.
Never handle the quartz surface of the UV lamp. Grease and fingerprints
will destroy the lamp. If the lamp is accidentally touched, clean it with
alcohol.
8. Reassemble the optics module. Carefully replace the rubber gasket to
prevent light leaks. Replace the bottom half of the case. Tighten screws at
opposite corners evenly until snug. Do not overtighten. Replace the flow
cell and the filter tray.
9. Connect the flow cell to the system and fill the flow cell with degassed water
or buffer. Turn the UV Monitor on and allow the lamp 20 minutes to warm up.
10. Zero the UV monitor and observe a steady baseline.
Bio-Rad Laboratories, 2000 Alfred Nobel Drive, Hercules, CA 94547
M7318166 Rev B