Bio-Rad Image Lab™ Software - Manual (Page 189)

User Guide | 189
A Maintenance
This chapter includes instructions for maintaining the universal hood in proper
working condition by replacing parts.
UV Transilluminator Lamp and Starter Replacement
Note: Keep the UV filter surface clean from the chemical agents used as gel
dyes. Use protective gloves when touching the UV transilluminator cover.
Depending on usage, the UV bulbs and starters last for many years. Replace bulbs
when you notice them flickering. If a bulb does not turn on when it is new or moved,
replace the bulb starter and test the bulb again.
There are three types of bulbs available. The catalog numbers are listed in Appendix
D, Accessories . The standard bulb is 302 nm. Optionally, the 254 nm bulb is used
for cross-linking of proteins and nucleic acids, and the 365 nm bulb is used to
minimize denaturing of DNA.
To replace the lamps
1. Turn off the power.
2. Disconnect the power cord from the universal hood.
3. Remove the four screws located on the left/right sides of the transilluminator
cover.
4. Remove the cover with the UV glass by sliding it forward, then lifting up.