Welch Allyn 12500 User manual

Welch Allyn 12500
Binocular Indirect Ophthalmoscope
Power Source
OWNER’S MANUAL

Thank you for purchasing a Welch Allyn power source for use with the Welch Allyn 12500
Binocular Indirect Ophthalmoscope (BIO). The operating instructions found in this manual
should be followed to ensure many years of accurate and reliable service. Please read
these instructions carefully before using your power source.
NOTE: If you plan to connect the Welch Allyn 12500 BIO to a transformer within an
instrument stand or console, please review the directions for connecting the
instrument to a power source in the BIO Instruction Manual, Part No.120073.
U.S. Patent No. 5,394,201 and International Patents Pending

1. Wall/Desk Power Source
Mount the Wall/Desk bracket by fitting round holes in back plate over
screw heads, then pushing downward on case. This slides the tapered
slots in the back over the shoulders in the mounting plate.
The Welch Allyn No. 74250 Wall/Desk Power Source is designed with
versatility in mind. There are several mounting options.
1. Wall mount
2. Desk top mount
3. Desk edge mount
Features of the Wall/Desk Power Source include:
Wall Mounting
Fasten the mounting plate to the wall with the appropriate screws (wood
screws are provided). Flat side of the plate should be facing the wall,
long sides should be horizontal. When the screws are tightened, there
will be a gap between the screw head and the surface of the plate.
On/Off switch
rheostat control
UL/IEC/CSA approved
plug-in transformer
Scope turns on
when lifted from
cradle
Condensing lens
storage area
to headset
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1-2
Desk Edge Mounting
NOTE: Do not use rubber pads if mounting to the EDGE of a desk
or table.
The Welch Allyn Wall/Desk Power Source can also be mounted on
the edge of a desk or cabinet. This will allow the Binocular Indirect
Ophthalmoscope (BIO) to hang unobtrusively, close to your task area.
To mount the Wall/Desk bracket on the edge of a desk or cabinet, it
must be secure so the weight of the BIO does not tip it over. To secure
the unit to the desk top, apply the two-sided tape found in the acces-
sory bag to the back edge of the base of the Wall/Desk bracket.
NOTE: Make sure the surface is clean before attaching. Locate the
bracket so the cradle is hanging over the edge of the desk. When the
bracket is in the desired position, apply firm pressure to it so it becomes
properly and evenly seated.
NOTE: If the Wall/Desk bracket ever needs to be relocated, it can be
removed by prying up on one end. Any tape residue can be removed
with an alcohol wipe.
Desk Top Usage
The Welch Allyn Wall/Desk Power Source can be set on any flat sur-
face. To prevent scratching and sliding, the small rubber pads should
be attached to the bottom of the unit. Remove the pads from their
backing and place them on the outermost corners of the unit’s base.
Desk Top
Mounting
Desk Edge Mounting

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IN OUT
ON
OFF
Cleaning
All surfaces may be cleaned with a soft cloth moistened with alcohol.
Maintenance
Periodic technical inspections should be performed by qualified per-
sonnel. This equipment should be inspected at least once every six
months, more often if used under adverse conditions.
When the BIO is in the cradle of the Wall/Desk bracket, the unit is
always off and the Light Emitting Diode (LED) on the front of the unit
is turned off. When lifted from the cradle (with on/off rheostat in on
position), power to the BIO is on and the LED will illuminate. The rheo-
stat control/on-off switch controls power to the instrument as well as
illumination intensity.
Operation
Once the Wall/Desk bracket is mounted, the unit is ready for use. Plug
the Power Source into an appropriately-grounded outlet. Then plug the
cord from the Power Source into the receptacle labeled “in” on the
Wall/Desk bracket. To complete the connection, screw the external
sleeve down until it stops — this will secure the plug in place. The cord
from the BIO should be connected to the “out” receptacle in the same
manner that the power source is connected. Be sure to complete the
connection by screwing the external plug sleeve down until it stops.

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2. Portable Power Source
The Welch Allyn No. 74260 Portable Power Source provides complete
portability and ease of use.
Features of the Portable Power Source are:
Operation
When fully charged and operated at full
intensity, the Portable Power Source has
approximately fifty minutes of on-time. When
the BIO is used at half intensity, the on-time
is approximately seventy-five minutes.
To recharge the Portable Power Source,
plug the recharger into the appropriate outlet
and into the proper receptacle on the
battery pack. When the battery pack is re-
charging, the charge indicator will glow yel-
low. The battery cannot be overcharged.
NOTE: Be sure the on/off switch-rheostat
control is turned OFF during recharging.
Do not attempt to plug the recharging
cord into the same receptacle the BIO
cord plugs into.
To use the battery pack, plug the BIO cord
into the proper receptacle. The external
sleeve on the plug needs to be screwed
down tightly to ensure a non-interrupted
connection. Turn on the on/off switch-
rheostat control and adjust to the desired
intensity. When the battery pack is on,
the power indicator will turn green. When
approximately four to seven minutes of
ON-time remain, this indicator will change
to amber.
On/Off switch
and rheostat
control
In use/time
remaining
indicator
Charging indicator
Front Back
Belt clip
UL/IEC/CSA approved
direct plug-in recharger

1-5
To Change the Battery
Unscrew the two screws which hold the housings
together. Be certain not to touch the green circuit
board or any of the components on it. Disconnect
the old battery pack from the connector and
attach a new battery pack. Install the battery
pack with label facing you, as shown. Be
sure the battery pack connector and wire
lies across the bottom edge of the housing,
as shown. Use only Welch Allyn No. 72240
rechargeable battery pack.
BATTERY
DISCONNECT
CONNECT
Cleaning
All external surfaces may be cleaned with
a soft cloth moistened with alcohol.
Symbol Descriptions
Attention. Read Operating Manual for
Cautions and Instructions for Use.
TYPE B Equipment.
TYPE BF Equipment.
Double Insulation.
Indoor Use Only.
Licensed under TÜV to conform with IEC 601-1.
Recognized component UL 2601-1.
Internally Powered.
The CE mark on this product indicates it has been
tested to and conforms with the provisions noted
within the 93/42/EEC Medical Device Directive.
Authorized European Representative Address:
European Regulatory Manager
Welch Allyn, Ltd.
Kells Road, Navan, Tel. [phone]
County Meath, Republic of Ireland Fax [phone]
+

1-6
Specifications No. 74260
Portable Power Source
Power Pack:
Model Number: 74201
Output Voltage: 4.8 Vdc
Output Current: 2.55 A
On-time: 42-50 minutes @ high setting.
On-time not to exceed 10 minutes,
off-time not less than 15 minutes.
Low Voltage Indication Time: 4-7 minutes
Recharge Time: 10 hrs minimum
Recharge Current: 225 ± 50 mA
Approvals for: UL-2601-1, CAN/CSA C22.2
No. 601.1, IEC 601-1,
IEC 601-1-2, CE
Charger:
Model Number: 74280
Input: 95-130 Vac, 60 Hz
0.08 A @ 120 Vac, 60 Hz
Output: 5.3 Vdc, 0.24 A @ 120 Vac
Output Cable: SPT, 2 conductor, AWG #22
Approvals for: UL-2601-1, CAN/CSA C22.2
No. 601.1, IEC 601-1,
IEC 601-1-2, CE
Rechargeable Battery:
Model Number: 72240
Type of Cells: Nickel-cadmium battery (NiCad)
Nominal Voltage: 4.8 Vdc, 1.8 Ahr.
Approvals for: UL-2601-1, CAN/CSA C22.2
No. 601.1, IEC 601-1,
IEC 601-1-2, CE

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Specifications No. 74250
Wall/Desk Power Source
Plug-In Power Transformer:
Model Number: 74290
Input: 95-130 Vac, 60 Hz
0.18 A @ 120 Vac, 60 Hz
Output: 5.15 Vac, 2.60 A @ 120 Vac
Output Cable: SJT/SVT, 2-conductor, AWG #18
Approvals for: UL-2601-1, CAN/CSA C22.2 No. 601.1,
IEC 601-1, IEC 601-1-2, CE
Wall/Desk Bracket:
Model Number: 74241
Input: 5.15 Vac, 60 Hz, 2.60 A
Output at Output Jack: 4.8 Vac, 2.55 A
Approvals for: UL-2601-1, CAN/CSA C22.2 No. 601.1,
IEC 601-1, IEC 601-1-2, CE

1-8
Service
For customers in North America, please return instruments requiring
service to a Welch Allyn Technical Service Department listed below or
to an authorized Welch Allyn distributor.
Technical Service Department
Welch Allyn, Inc.
4341 State Street Road
Skaneateles Falls, NY 13153-0220
U.S.A.
Telephone: [phone]
Fax: [phone]
For customers outside of North America, return your unit to a local,
authorized Welch Allyn distributor or to your nearest Welch Allyn
service center.
Rechargeable Battery Warranty
Welch Allyn nickel-cadmium batteries are guaranteed by Welch Allyn
for two years from date of manufacture (when used in Welch Allyn
instruments only). Defective batteries will be replaced on a pro rata
basis should failure occur prior to expiration date on battery.
Service and Warranty Information

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Welch Allyn, Inc.
4341 State Street Road
P.O. Box 220
Skaneateles Falls, NY 13153-0220
Telephone: [phone]
1-800-535-6663 (only in U.S.A.)
FAX: [phone]
Part No. 741916-3 Rev. A Printed in U.S.A.