Hitachi PRIMAIDE 1440 Instruction Manual page 18

SAFETY SUMMARY
WARNING precautions in the Manual (Continued)
Injury due to Xenon Lamp Explosion
[At mounting] (Continued)
•
Do not touch the quartz glass part of the xenon lamp with bare hands.
If the quartz glass part of the xenon lamp is contaminated with dust or
fingerprints, wipe it using a gauze sheet or absorbent cotton cloth
slightly moistened with high-quality alcohol. If the xenon lamp is
turned on with dust or fingerprints left on the surface of the quartz
glass part, it may cause contamination burn-in to decrease the
mechanical strength of the glass part, resulting in explosion of the
xenon lamp.
•
Be sure to mount the xenon lamp in the specified direction.
If the mounting direction (polarity) is wrong, the cathode will be
consumed significantly to disable turn-on of the lamp.
Mount the lamp so that the '+' (anode) mark on it will be positioned at
the support metal of the lamp holder.
If the lamp with its cathode consumed excessively is used
continuously, pressure inside the lamp bulb may become too high,
causing possible explosion. To prevent this, replace the lamp with a
new one immediately if its cathode has been consumed substantially.
•
If the nut on the lamp base and wiring part is loose, the contact
resistance between them will increase due to poor contacting. This
could generate a large amount of heat to make the lamp extremely
hot, resulting in possible explosion. To prevent this, be sure to
tighten the nut securely.
[At disposal]
•
The xenon lamp is filled with high-pressure gas (approx. 1 MPa at
room temperature, approx. 4 MPa under operating condition), and
this high-pressure gas still remains in the xenon lamp after it is
demounted for replacement. For disposal of the used xenon lamp,
wrap it with a thick cloth (e.g., triple-folded cotton cloth) completely
and crush its glass part with a hammer or the like. Then, discard the
xenon lamp as a dangerous waste item properly. If the xenon lamp is
discarded without being crushed, it could explode due to possible
impact at the time of disposal, scattering glass pieces to cause
personal injury.
WARNING
SAFETY - 6