Welch Allyn RL-150 Rhinolaryngoscope - User Manual - Manual (Page 7)

System Inspection
(continued)
Inspection of Light Guides and Optics
1. With the light source lamp on, hold distal tip
approximately 40 mm from any printed surface.
Verify light is being emitted from light guides.
2. Hold eyepiece to your eye and rotate diopter
ring until print is in focus. Verify focus from
10-40 mm from surface.
Inspection of Umbilical Cord
1. Check the umbilical cord for cracks,
dents, crushed and twisted areas.
2. Verify that the endoscope
connector terminal’s light
guide terminal fitting is tight
and does not move when
light pressure is applied.
NOTE: Instrument should be cleaned and disinfected or sterilized
prior to every use. (Follow steps starting on pages 7 and 10.)
Inspection of Light Source
1. Activate “power” switch. This will start the lamp and cooling fan.
CAUTION: Do not look directly into the endoscope connector port
when activating the light source.
2. The output of the light source is con-
trolled by the illumination intensity
control. Clockwise rotation will
increase illumination output. Counter-
clockwise will decrease illumination.
NOTE: If your light source has an air pump built in, the air pump is
not used for Rhinopharynlaryngoscopy.
WARNING: The risk of thermal injury exists whenever fiber optic
instruments are used with high intensity light sources.
The risk of injury is greatest:
(A) During close stationary observation and/or prolonged close
contact with mucosa.
(B) When the fiberscope is advanced slowly through a narrow
lumen.
Close stationary viewing should be avoided and the level of illumination
should be limited to the level necessary for adequate visualization.
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