Hitachi ChromasterUltra Rs 6270 Instruction Manual page 18

SAFETY SUMMARY
WARNING precautions in the Manual (Continued)
Injury due to Xenon Lamp Explosion
[In use]

When the cumulative turn-on time of the xenon lamp exceeds the guaranteed useful
lifetime, the electrodes evaporate and the scattered matter sticks to the bulb wall, so
its blackening progresses and heat dissipation is hindered. As a result, the internal
bulb temperature (pressure) will rise abnormally to cause a danger of burst, etc.
Replace the xenon lamp with a new one before its cumulative turn-on time exceeds
the guaranteed useful lifetime.
P/N
650-1500
890-2019
[At replacement]

Before removing the xenon lamp for replacement, turn off the xenon lamp (turn off
power to the instrument) and then wait for at least one hour until the xenon lamp
becomes sufficiently cool to reduce its internal pressure the normal safety level.

If a strong shock or impact is applied to the xenon lamp or if the surface of its quartz
glass part is scratched, it may explode and scatter glass pieces, resulting in personal
injury. Be sure to wear proper protective gear such as safety goggles, safety mask,
thick long sleeves, and gloves when handling the xenon lamp.
[At mounting]

When loosening or tightening the retaining nut for the xenon lamp, be careful not to
apply excessive force to its glass bulb part. Never hold and turn the glass bulb part
for loosening/tightening.
WARNING
Part Name
150 W xenon lamp
Long-life xenon
lamp
SAFETY - 7
Useful Lifetime
500 hours
1,000 hours
(Manual FL Section 5)
(Manual FL Section 5)
(Manual FL Section 5)
(Manual FL Section 5)