MFI Service Manual
Thank you for purchasing the Welch Allyn Fiber Optic Headlight. Follow the
guidelines provided in this manual, and you will enjoy years of dependable,
trouble-free service from your new headlight.
Symbol Descriptions ................................................ 2
Warnings and Precautions.. ..................................... .3
Assembly and Operation .......................................... 4
Cleaning and Maintenance.. .................................... 7 .7
Warranty and Service ............................................... 8
Ordering Parts and Components .............................. 8
Specifications ........................................................... 9
These important symbols appear on your Welch Allyn Fiber Optic Headlight.
Please note their meaning.
Attention: Read the owner’s manual for all warnings, precautions and
instructions for use.
Type BF Equipment
The CE mark indicates this product has been tested to, and conforms
with, the provisions noted in both th 89/336/EEC
Compatibility Directive and th 73/23/EEC
Low Voltage Directive.
European Contact for Regulatory Compliance:
European Regulatory Manager
Welch Allyn Ltd.
Navan, County Meath
Republic of Ireland
Tel: 353 46 28122
Fax: 353 46 28536
WARNINGS AND PRECAUTIONS
owner’s manuals for this Headlight and all equipment used with it.
Do not shine light into eyes. Eye injury may result.
Do not use at distances closer than 10in (25cm) for extended periods.
Erythema may result.
Do not remove the fiber optic bundle from the luminaire while light
source is on. The light guide’s distal end may transfer extreme heat.
Proximal end of fiber optic bundle will be hot after use. Do not touch.
Always plug fiber optic bundle into light source before turning on light
source. Do not remove the fiber optic bundle from the light source
while light source is on.
Use Headlight only with Welch Allyn HI*Lux Light Source and Welch
Allyn Fiber Optic Bundle.
Service must be performed only by Welch Allyn authorized repair
1. Carefully remove fiber optic bundle from plastic bag.
2. Carefully remove headlight assembly from plastic bag.
3. Insert fiber optic bundle distal end into luminaire.
4. Drape fiber optic bundle over top of headband. Align marks on fiber optic
bundle with clips attached to top and back of headband. Press bundle into
5. Turn light source intensity down to minimum. Insert fiber optic bundle
proximal end into light source port.
6. Turn light source on. Adjust light intensity as desired.
Note: Refer to Welch Allyn HI Lux Light Source owner’s manual for instructions
on operating light source.
1. Adjust size of illumination spot by turning grooved dial on luminaire. Spot
size ranges from.75in to 3in (20mm to 75mm) in diameter with a 16in (40cm)
2. Use knobs at top and rear of headlight assembly to adjust headbands for fit
and comfort. Bottom of headband should be even with tops of ears.
CAUTION: Over-tightening adjustment knobs will damage the gear teeth.
3. For greatest comfort, use gown clip to secure fiber optic bundle to user’s
surgical gown. (See figure.)
4. Headlight assembly can assume a wide variety of positions. Use joystick to
adjust. For easiest adjustment, place in indirect position (See figure.) before
putting on headlight. While wearing headlight, adjust luminaire downward as
CLEANING AND MAINTENANCE
LUMINAIRE, HEADBAND, AND FIBER OPTIC BUNDLE:
CAUTION: Turn off light source before disconnecting fiber optic bundle from
headlight or light source.
Exterior surfaces of luminaire, headband, and fiber optic bundle can be wiped
clean with any of these solutions:
Cidex, CidexPlus, Cidex 7
70% isopropyl alcohol
Keep ends of fiber optic bundle clean by wiping with a damp cloth. Allow to dry
Avoid scratching or striking ends of fiber optic bundle. Light transmission losses
To inspect fiber optic bundle for light transmission losses, remove from light
source and headlight assembly. Hold one end of fiber optic bundle up to room
lighting. Examine other end. Replace fiber optic bundle if 25% or more of end area
Joystick can be sterilized by steam autoclave. Unscrew from luminaire and process
in a standard steam autoclave.
WARRANTY AND SERVICE
The Welch Allyn Fiber Optic Headlight is guaranteed against all defects in
materials and workmanship. Welch Allyn will repair or replace, free of charge, any
component found to be defective for reasons other than misuse, neglect, damage in
shipment, or normal wear. This headlight assembly warranty is in effect for three
years from date of purchase.
FIBER OPTIC BUNDLE
The Welch Allyn Fiber Optic Bundle is guaranteed against all defects in materials
and workmanship. Welch Allyn will repair or replace, free of charge, any parts that
prove defective for reasons other than misuse, neglect, damage in shipment, or
normal wear. This fiber optic bundle warranty is in effect for 18 months from date
ORDERING PARTS AND COMPONENTS
The Welch Allyn Fiber Optic Headlight is designed for use with the Welch Allyn
Fiber Optic Bundle and the Welch Allyn HI Lux Light Source. For best results,
use only the appropriate Welch Allyn equipment.
Complete Headlight System
(Includes Light Source, Headband with
Luminaire, Fiber Optic Bundle)
Complete Headlight System, Export
(Specify country and voltage)
Headband with Luminaire
HI Lux Light Source
Fiber Optic Bundle
(8ft (240cm) standard length)
Replacement Pads for Headband (set)
Replacement Joysticks (2)
Gown Clips (2)
HI Lux Light Source Replacement Lamp
1 lin x 7in x 7in
(28cm x 17.8cm x
Headband with Luminaire
Headband with Luminaire
Fiber Optic Bundle, 8ft (240cm) standard length
Light Spot Diameter at 16in (40cm) distance
Fiber Optic Bundle Interface
Standard ACMI Connector
CSA C22.2 NO 601.1
AS3200 Appendix Z
Operating: 60°F (15°C) to 85°F (30°C)
Storage: -13°F (-25°C) to 140°F (60°C)