Welch Allyn 49500, 49502, 49504 User manual
Welch Allyn®Light Source
Light Source Menu
Service Manual
For Model Numbers: 49500, 49502, 49504 and 49506.
CONTENTS
Thank you for purchasing the Welch Allyn®Light Source, designed by a
leading worldwide manufacturer of illuminated diagnostic instruments.
By following the use and care guidelines given in this manual, you will be
rewarded with years of dependable, trouble-free service from your new
Light Source. Read these instructions thoroughly before use.
System Symbol Descriptions.......................... 1
Warnings and Precautions.............................. 2
System Description.......................................... 4
System Set-up/Operation ................................ 5
Mounting .......................................................... 6
Lamp Replacement .......................................... 7
Fuse Replacement .......................................... 8
Cleaning............................................................ 9
Specifications .................................................. 10
Troubleshooting Guide.................................... 11
Maintenance and Repair.................................. 12
Warranty and Service ...................................... 12
Ordering Information ...................................... 13
SYMBOL DESCRIPTIONS
Attention: Read Operating Manual for Warnings, Precautions,
and Instructions for Use.
Dangerous Voltage: Refer Servicing to Qualified Personnel.
Type B Equipment
Caution — Hot
Warning: Risk of Fire. Replace Fuses as Marked.
Light; Lighting; Illumination Intensity
INDICATIONS
Use of the Welch Allyn Light Source is indicated for medical lighting applications requiring a remotely located, high-quality white light. This product must
only be used by qualified medical personnel.
CONTRAINDICATIONS
The use of the Welch Allyn Light Source is contraindicated for applications
where high intensity light might burn or damage tissue; such as for neonate
transillumination and ophthalmic procedures. For further contraindications,
the user must also consult the operating manual of the instrument being
used with the Light Source in the medical procedure.
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W ARNINGS AND PRECAUTIONS
WARNING: Possible explosion hazard. Do not use in the
presence of flammable anesthetics. To ensure patient
and operator safety, read and understand this manual
before using the Welch Allyn Light Source.
Do not remove cover. Electrical shock hazard due to high
internal voltage. There are no user serviceable parts
inside except for the lamp and fuse, which are accessible
through the bottom and back cover panels. Refer all
service to Welch Allyn.
Replace fuses as marked. See Fuse Replacement
Section, page 8.
The high intensity light at the front of the light source
and at the tip of the Fiber Optic Bundle may give rise
to high temperatures and bright light. To minimize the
risk of injury, avoid direct viewing or contact with
sensitive tissues.
Do not use for neonate transillumination. Erythema
may result.
To prevent temporary blinding, always plug the fiber optic
bundle into the Welch Allyn Light Source before turning
the power ON.
Total system risk current — including the patient applied
instrument — should not exceed 100 microamps. An
isolation transformer is required if total system risk
current exceeds 100 microamps when accessories
are interconnected.
Do not sterilize the Welch Allyn Light Source. Refer to
Cleaning section for cleaning instructions.
Do not switch the Welch Allyn Light Source ON and OFF
in rapid succession. Doing so will dramatically shorten
lamp life. Allow lamp to cool down 10 to 15 seconds
between uses.
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CAUTION: The Light Source should only be used by
qualified medical personnel.
Provide adequate ventilation to prevent overheating.
Do not cover or drape this light source. Provide a 3 inch
(7.62 cm) distance between the Welch Allyn Light Source
and any solid objects.
Grounding reliability is achieved only when connected
to hospital-use or hospital-grade receptacles. Inspect
electrical plug and cord routinely. Do not use if damage
is discovered.
Do not use or store liquids above or on the Welch Allyn
Light Source.
If this light source is used during invasive surgery, the
failure of a component within the system, causing loss
of illumination, may indirectly cause risk to the patient.
Therefore, it is recommended to have alternative means
of illumination available.
Since the light source uses a custom lamp, always have
a spare lamp available for replacement. Use caution
because lamp may be hot. Allow the lamp to cool before
replacing. Use only Welch Allyn supplied power cord.
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