SO-111-R/RF Ophthalmic Microscope
User Manual
Page 12 of 22
Issue number 1.0 X:\Current User Manuals\SO-111-R-RF User Manual v1.0.doc
LAMPHOUSE AND LAMP
1.
The lamp house on the SO-111-R ophthalmic microscope produces a coaxial light that
provides a red fundus reflex from the back of the eye. The intensity of the light may be
controlled from the top panel of the power supply. The lamp supplied has a rated average
life of 50 hours, but the actual life of the lamp will depend on the intensity setting normally
used. The highest setting will increase light output but will reduce lamp life. Conversely,
running the lamp at the lowest setting will produce a lamp life of greater than 50 hours.
2.
It is strongly recommended that the lamp be replaced as a routine maintenance task, to
reduce the possibility of failure during surgery.
LAMP REPLACEMENT
1.
Remove the toolbox from the horizontal arm by pulling it out horizontally. The spare lamp
module is located at the end of the toolbox, and may be removed by pulling out
horizontally.
2.
Pull out the old lamp module from the side of the lamp house by gripping the rectangular
block located beneath the cable gland at the back of the lamp house. Place the replacement
module in the lamp house so that the pins engage in the sockets and ‘click’ into place.
3.
When the old lamp has cooled down, it may be replaced by gripping the lamp holder at the
sides where the rectangular cutout is located, and pulling the lamp out. Do not attempt to
pull the lamp out by gripping the glass capsule. Push the new lamp into the socket so that
the lamp flange sits flush on the front of the locating tube. Ensure that the new lamp is free
of grease or fingerprints before replacement. Use of protective gloves during this procedure
may be useful. Any grease marks should be removed with a solvent such as methanol to
avoid reducing lamp life. This assembly is now ready for use as a new quick-change lamp
module and may be replaced in the toolbox.
Figure 8: Replacing the lamp
