Bio-Rad Image Lab™ Software - Manual (Page 213)

User Guide | 213
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: The UV filter surface should always be kept 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.
Three types of bulbs are available. The catalog numbers are listed in Ordering
Information on page 243 . The standard bulb is 302 nm. Optionally, the 254 nm bulb
is used for cross-linking of protein, 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.