Ohmeda BiliBlanket Plus Manual

BiliBlanket®Plus
High Output
Phototherapy System
Operation, Maintenance and Service Manual
PLUS
High
Med
Air Flow
Failure
Power
Photothera
Low
Medium
High
15 3.75
25 6.25
35 8.75
+
+
+
uW/cm
2
/nm
uW/cm
2
/nm
uW/cm
2
/nm
Power Level
WWarning: Intense Light
Connect Pad Prior to Operation
Transilluminator Phototherapy
Phototherapy System
BiliBlanket
®

i i6600 0341 000 04/25/00
User Responsibility
This Product will perform in conformity with the description thereof contained in this
operating manual and accompanying labels and/or inserts, when assembled, operated,
maintained and repaired in accordance with the instructions provided. This Product
must be checked periodically. A defective Product should not be used. Parts that are
broken, missing, plainly worn, distorted or contaminated should be replaced immedi-
ately. Should such repair or replacement become necessary, Ohmeda recommends
that a telephone or written request for service advice be made to the nearest Ohmeda
Regional Service Center. This Product or any of its parts should not be repaired other
than in accordance with written instructions provided by Ohmeda and by Ohmeda
trained personnel. The Product must not be altered without Ohmeda’s prior written
approval. The user of this Product shall have the sole responsibility for any malfunction
which results from improper use, faulty maintenance, improper repair, damage or
alteration by anyone other than Ohmeda.
CAUTION wFederal law in the USA and Canada restricts this device to sale by or on the
order of a licensed medical practitioner.

i i6600 0341 000 04/25/00
Table of Contents
1/General Information ..................................................................................................... 1
Description......................................................................................................................1
Light source controls, indicators and connectors............................................................4
Accessories and replacement parts................................................................................6
2/Operation ...................................................................................................................... 1
Checkout procedure before operation ............................................................................2
Checkout procedure...............................................................................................2
Using the BiliBlanket Plus High Output Phototherapy System .......................................3
Using the transilluminator ...............................................................................................6
3/Maintenance ................................................................................................................. 1
Maintenance schedule....................................................................................................1
Operator maintenance ..........................................................................................1
Service maintenance..............................................................................................1
Cleaning and disinfecting................................................................................................1
Bulb replacement............................................................................................................2
Cleaning the fan filter......................................................................................................4
Attaching the dovetail rail mounting bracket accessory..................................................4
4/Service .......................................................................................................................... 1
Repair policy and procedure...........................................................................................1
Troubleshooting ..............................................................................................................2
Functional description.....................................................................................................3
Repair procedures ..........................................................................................................4
Replacing a fuse ....................................................................................................5
Replacing the light source cover ............................................................................6
Replacing the PC board .........................................................................................6
Replacing the cooling fan.......................................................................................6
Replacing the brightness control............................................................................7
Replacing the power supply ...................................................................................7
Replacing the thermal cutout switch ......................................................................8
Replacing the optical filter assembly......................................................................8
Replacing the bulb holder ......................................................................................9
Replacing the power inlet module ..........................................................................9
Replacing a bezel/hour meter ..............................................................................10
Replacing a front bezel label................................................................................10
Electrical safety procedures..........................................................................................11
Ground continuity .................................................................................................11
Leakage current ...................................................................................................11
Light Output Measurement ...........................................................................................11
Illustrated service parts.................................................................................................13
Schematics ...................................................................................................................17
Appendix.......................................................................................................................... 1
Specifications..................................................................................................................1

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IMPORTANT CLINICAL INFORMATION
PLEASE READ CAREFULLY BEFORE USING THIS DEVICE
Care of the Skin
The skin serves as a protective barrier against chemical, mechanical, and biological
insults. The skin is also important in the regulation of body temperature and serves as
a route of water excretion, especially in premature infants. The introduction of new
intensive-care techniques has been associated with the increased survival of very
small, premature infants. The immaturity of the skin of the very low weight infants,
coupled with excessive instrumentation and handling, poses previously unrecognized
problems for the nursing care of these infants1.
Please read, evaluate and implement the following recommendations as appropriate:
1. Please refer to the following standard of skin care recommendations as given in the
literature2 when utilizing this device with all infants. Special attention should be
given to sanitation and skin integrity.
• Observe color, rashes, excoriation
• Clean skin with warm water
• Clean perineal area after stooling
• Change infant’s position every 2 hours
2. This device is intended only for the treatment of existing hyperbilirubinemia. Use of
this device for prophylactic treatment, particularly of premature infants, is not
recommended. These infants have extremely fragile skin3and various clinical
studies have produced inconsistent conclusions concerning the effectiveness of
prophylactic phototherapy treatment 4 5.
General Precautions
1NAACOG(1992), OGN Nursing Practice Resource, Neonatal Skin Care, NAACOG.
2ibid
3Rutter, N., The immature skin, British Medical Bulletin, Vol. 44, No. 4, 1988
4Curtis-Cohen, M., et al, Randomized trial of prophylactic phototherapy in the infant with very low birth weight, TheJournal
of Pediatrics, July, 1985
5Brown, A., et al, Efficacy of Phototherapy in Prevention and Management of Neonatal Hyberbilirubinemia, Pediatrics,
February , 1988

iii iii6600 0341 000 04/25/00
General Precautions
Definitions
What the attention Next to each warning or caution, we have placed an “attention, read
symbol means accompanying documents” symbol to alert you to the presence
of these important statements. This is the attention symbol:
w
When the attention symbol appears in front of text that is printed on the system itself,
it means that the text is elaborated upon in the operation manual.
WARNING: A Warning statement is used when the possibility of injury to the patient or
the operator exists.
CAUTION: A Caution statement is used when the possibility of damage to the equip-
ment exists.
~Indicates alternating current.
mIndicates IEC Type B equipment.
TThis letter appearing before a fuselink value indicates a time delay fuselink.
Important: An Important statement is similar to a note but is used for greater empha-
sis.
Note: A Note provided additional information to clarify a point in the text.
The following are general Warnings and Cautions. Precautions specific to
certain procedures are found in the text of the manual.
WARNINGS w
Do not use the BiliBlanket Plus Phototherapy System in the presence of flammable
anesthetics; a possible explosion hazard exists under these conditions.
Service described in this manual must be performed by a technically competent
individual as described in this manual. Detailed drawings and procedures for more
extensive repairs are included in this manual solely for the convenience of qualified
personnel having proper knowledge, tools and test equipment, or for Ohmeda service
representatives.
CAUTIONS w
Servicing of this product in accordance with this service manual should never be
undertaken without the proper tools, test equipment and the most recent revision of this
service manual which is clearly and thoroughly understood.

iv iv6600 0341 000 04/25/00
Notes

1/General Information
1-1 1-16600 0341 000 04/25/00
1/General Information
In this Section
Description...................................................................................................................1-1
Light source controls, indicators and connectors.........................................................1-4
Light source and pad...........................................................................................1-4
Light source back panel ......................................................................................1-5
Accessories and replacement parts.............................................................................1-5
WARNING ww
ww
wDo not turn on or operate the BiliBlanket Plus High Output Phototherapy
System in the presence of a flammable anesthetics; a possible explosion
hazard exists under these conditions.
General Information
This manual describes how to checkout, operate and maintain the Ohmeda BiliBlanket
Plus High Output Phototherapy System. It also describes for the technically competent
person how to service the BiliBlanket Plus High Output.
Before using the BiliBlanket Plus High Output Phototherapy System
• Read through sections one through three of this manual.
• Pay special attention to the Warnings and Cautions which appear in the manual.
• Read the User Responsibility statement located on the inside front cover; it de-
scribes what is expected of the user to maintain a safe and accurate product.
• Read the Warranty; it describes Ohmeda’s responsibility in case of a functional
defect.
Keep this manual available for answering questions which may arise.
Description
The new BiliBlanket Plus High Output pad, which can be identified by the gray cable,
provides higher intensity levels than the original BiliBlanket Plus High Output pad with the
white cable. Both pads can be used with the BiliBlanket Plus High Output or BiliBlanket
Plus High Output light source box, however, the pad with the white cable will provide lower
intensity levels.
The Ohmeda BiliBlanket Plus High Output Phototherapy System uses a fiber optic cable
to deliver light from a high intensity lamp to a woven fiber optic pad. The pad is placed in a
disposable cover that is in contact with the patient. The patient is exposed to light in the
ideal 400 to 550 nanometer range for phototherapy treatment.
On units with the transilluminator option, unfiltered light in the visible spectrum travels
through a flexible light pipe to appear at the tip of the transilluminator cable. The light from
the cable is used to facilitate vascular sticks or injections. It is also used to find pneu-
mothoraces.
The BiliBlanket Plus High Output Phototherapy system consists of a light source unit and
a light pad with a four foot long fiber optic cable. The light source unit contains a lamp, light
filters, a variable power supply for the light source, a cooling system and overheating
protection near the lamp.
The light source lamp is a high intensity, tungsten halogen bulb with a built-in reflector.
The reflector is coated with a dichroic surface which reduces the infrared energy
transmitted. This bulb is specifically manufactured for use with the BiliBlanket Plus High
Output.

1/General Information
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A light filter, positioned in front of the lamp, rejects light outside the 400 to 550 nanom-
eter range. This filter blocks nearly all ultra-violet and infrared light; only the blue light is
allowed to pass. This filtered light is focused on the inlet of the fiber optic cable.
Light intensity may be selected by the front panel brightness rotary control. Control
range is from 19± 4.75 µW/cm2/nm at full counter clockwise to 45± 11.25 µW/cm2/nm
at full clockwise with a medium detent at 32± 8 µW/cm2/nm. See Light Output Measure-
ment Procedures in Section 4 for precise light output measurement.
Mode select
Selects the operating mode ; phototherapy or transillumination. Using the Ohmeda
transilluminator light pipe, the BiliBlanket Plus High Output System can be used as a
transilluminator.
Supply power
Power for the light source unit can be supplied by any standard AC mains power
source at either 50 or 60 Hz that have voltages in the range: 90 - 132 or 180 - 264.
Power enters the light source through a receptacle that has an integral power switch.
Cooling
A fan cools the light source unit. A thermal cutout switch located next to the light-filter
protects the light source unit and fiber optic cable or transilluminator from overheating.
Fiber optic cable
The fiber optic cable contains 2400 individual plastic fibers which transmit the light from
the light source to the light pad. The light pad is constructed by weaving these fibers
into a mat. This patented process produces a pad with light over the entire surface.
These fibers are randomized in the cable to eliminate any local intensity gradients due
to bulb hot spots, dust on the filter, dust on the cable end, etc. This allows the nearly
uniform, continuous blanket of light. A disposable protective pad cover is provided to
reduce the risk of cross-contamination and make the patient more comfortable.
Disposable cover
The disposable cover is designed for use with both premature and full-term infants. The
infant lies directly on the disposable-covered pad without any method of attachment
between the pad and the infant.

1/General Information
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Disposable vest
A disposable vest is designed to secure the fiber optic pad to the infant. With the
disposable vest, it is possible to hold and nurse the infant while continuing photo-
therapy treatment. The disposable cover should be used for premature infants and full-
term infants who can’t tolerate having the vest secured around the midsection.
Transilluminator
The transilluminator light pipe contains plastic fibers which transmit light from the light
source to the tip.

1/General Information
1-4 1-46600 0341 000 04/25/00
Light source controls, indicators and connectors
Figure 1-1
Light source, pad and transilluminator cable
Nontransilluminator Unit
4
Transilluminator Unit
CI.29.001,.002
6321
165432
7
8