Welch Allyn LX-150 User manual

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Service Manual
Int'l Manual
Welch Allyn
LX-150"
Light Source
Operating
Instructions

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Welch Allyn
Thank you for purchasing the Welch Allyn LX-150 Light Source. The
operating and maintenance instructions found in this manual should
be followed to ensure many years of accurate and reliable service.
Please read these instructions thoroughly before using your new
LX-150 Light Source.
Warning
The user of this equipment should be thoroughly trained in the
medical procedures appropriate to the instrumentation. Further¬
more, time should be taken to read and understand these instruc¬
tions before performing any procedures. Instructions for other
equipment used in conjunction (e.g. electrosurgical generators,
suction machines, etc.) should also be read and understood. Failure
to do so may result in injury to the patient and/or damage to the
instrument.

Specifications
Illumination
Lamp Type
Lamp Life
Brightness Adjustment
Cooling Method
150w Halogen (#04050)
50 Hours
Continuous Diaphragm
Forced Air
Air Feeding
Pump Type
Capacity
Max. Flow Rate
Control
Electromagnetic Vibrator
6.6 p.s.i. Max.
7.2 UMin.
Independent Air Switch
Dimensions
Weight
(W)11" X (H)51/2" X (D)9V2"
17.5 lbs.
Supply
Circuit
Voltage
Frequency
Current
115v A.C. ± 10%
60Hz
2A
Ambient
Temp
lO^O'-C
Relative
Humidity
1

Nomenclature
1. Main Power Switch-controls all power into light source.
Without activation, all other controls will not function.
2. Air Feed Switch-activates flow of air at air output connector
(on right side of box).
3. Illumination Control-controls intensity of light output at
endoscope connector port.
4. Endoscope Connector Port-accepts endoscope connector
terminal of endoscope to complete illumination pathway.
5. Water Bottle Bracket-couples water bottle to light source.
6. Air Output Connector-couples to air input hose on
water bottle.
7. Lamp Access Door-opens to allow for lamp replacement.

Bottom View
Water Bottle
8. Air Input Hose-couples to light
source air output connector.
9. Air/Water Output-couples to dual
lumen air/water line of flexible
sigmoidoscope (FX-100).
10. Mounting Bracket-couples to water
bottle bracket on light source to
support bottle.

Prior to Initial Use
General Precautions
. The cabinet of this unit should always be grounded correctly and
securely during use. Do not disable the line cord ground
connection.
. LX-150 should not be used in the presence of any flammable gas.
. The LX-150 and connected endoscope should not be used with
electrosurgical instruments that exceed safety leakage current
or whose safety in linkage is not guaranteed.
. Immediately stop using the light source if liquid enters the cabinet.
. Do not look directly into endoscope connector port when it is
emitting light.
Preparation for Use
. The light source should be set upon a firm, horizontal surface.
Care must be exercised to keep both sides of the illuminator free
of obstructions to permit efficient circulation of air.
Connection to Supply Source
* Check to verify that the power switch is off.
. Couple the supply cord to a 115v/60Hz hospital grade receptacle
that meets the input ratings on the rating plate.
Connecting Endoscope
. Insert the endoscope connector terminal into the endoscope
connector terminal port. (Note: Endoscope alignment pin should
point toward the bottom of the light source).
. Push the terminal firmly into the port until it “clicks” into place.
Connecting Water Bottle
. Remove cap and fill the water bottle with clean tap water until
314 full.
. Replace cap and tighten firmly.
. Hook water bottle to bracket on right side of light source. (Note:
DO NOT attempt to fill water bottle while it is connected to
light source.)
. Couple air output connector hose to air output connector on
light source.
. Couple dual lumen air/water line to top of water bottle. Connect
remaining fittings to corresponding air/water input connectors
on endoscope.
4

Inspection
Prior to every examination, the equipment should be pre-tested
following the procedures outlined below. If an abnormality is detected
or suspected, contact Welch Allyn Customer Service for assistance.
Activating Light Source
* Switch power switch to “on”.
. Set brightness knob midway between (- 1 -) and (-) settings.
. Check the distal tip of endoscope to verify that light is being
emitted from distal light guides.
. Verify that internal cooling fan is operating by listening to whirring
noise from light source.
. If unit does not power up, contact Welch Allyn Customer Service
[phone].
. If fan is activated but no light is emitted, lamp is defective.
Refer to maintenance section for replacement procedure.
Adjusting Light Intensity
. Light emitted from the distal tip of the endoscope will increase
as the brightness knob is rotated toward the ( + ) and conversely
the intensity will diminish when rotated toward (-).
Air/Water Feed
. With power switch “on”, turn on the air switch.
. Verify that air and water flow normally from distal tip of endoscope
when corresponding valves are depressed.
NOTE: If air/water flow falls below normal, contact Welch Allyn
Customer Service.
Storage
. Disconnect and empty the water bottle. Wash with mild soapy
water and rinse.
. Disconnect power cord from receptacle.
. Wipe external surface of source and power cord with gauze
moistened in alcohol.
. Store in a clean, dust-free environment at room temperature.
Avoid direct sunlight and areas of high temperature/humidity.
. Do not wind power cord so tightly that it will crush, twist or bend.
5

Maintenance
Lamp Replacement
1. Turn power switch to “off” position and unpiug power cord
from receptacie.
2. Uncoupie air input hose and remove water bottie from bracket.
3. Fiip the iight source 180° and piace top face down on a
horizontai surface.
4. Open iamp access door by inserting a coin in siot and turning
reiease iatch 1/4 turn counterciockwise. (Note: before touching
iamp, aiiow for sufficient time to cooi.)
5. After iamp has cooied, puii the iamp hoiding iever toward the
back of the unit untii the iever reaches an aimost verticai position.
6. Remove expired iamp from the iamp hoider.
7. Prior to instaiiing new iamp, remove protective cap.
8. Return the iever to its originai position. The new iamp may then be
inserted into the hoider and advanced untii it “snaps” into piace.
(Note: iamp must be fuiiy inserted to assure proper contact).
9. Ciose and secure iamp access door.
(Note: Use repiacement iamp #04050)
Service
For service, ship iight source to:
For assistance, teiephone:
Weich Aiiyn Customer Service
[phone]
Welch Allyn
Welch Allyn, Inc.
4341 State Street Road
Skaneateles Falls, NY 13153-0220
Attention: Repair Department
Printed in U.S.A.
Part No. 451502