natus neoBLUE User manual

Service Manual

Caution: Federal Law (U.S.) restricts this device to sale or use by or on the order of a physician (or properly licensed
practitioner).
Natus, neoBLUE and Bili-Meter are registered trademarks of Natus Medical Incorporated.
BiliBlanket is a registered trademark of GE Healthcare.
Joey is a registered trademark of Philips Healthcare.
© 2015 Natus Medical Incorporated. All rights reserved.
This manual may not be reprinted or copied in whole or in part without written consent from Natus Medical
Incorporated. The content of this manual may change without notice.
Natus Medical Incorporated
5900 First Avenue South
Seattle, WA 98108 USA
Telephone [phone]
Fax [phone]
Technical Service [phone]
Technical Service Fax [phone]
E-mail: [e-mail]
Customer Service [phone]
Customer Service Fax [phone]
E-mail: [e-mail]
International Support - Please contact your local Distributor.
Distributor locations can be found at www.natus.com
EU Representative
Natus Europe GmbH
Robert-Koch-Str. 1
82152 Planegg
Germany
Phototherapy System and Device: Patent Application Pending 10/265,9

Table of Contents
List of Figures 2
Chapter 1 Introduction 3
1.1 About this manual 3
1.2 Product description 5
1.3 Pictorial introduction to the neoBLUE system 5
1.4 Before you start 11
1.5 Contacting Natus Technical Support 12
Chapter 2 Routine Maintenance Procedures 13
2.1 Cleaning 14
2.2 Safety testing 15
2.3 Performance Verification 16
2.4 Adjusting light intensity 19
Chapter 3 Troubleshooting Guide 20
3.1 Troubleshooting the neoBLUE light 20
3.2 Troubleshooting the LED light current assembly 23
Chapter 4 Repair Procedures 26
4.1 Removing the lens 27
4.2 Removing the LED light panel 28
4.3 Removing components from the enclosure 29
Chapter 5 Parts and Specifications 32
5.1 How to order parts 32
5.2 Parts in context 32
5.3 Parts list 35
5.4 Illustrations of major parts 37
5.5 Accessory pack 39
5.6 Specifications 40
Chapter 6 Measuring the neoBLUE light with a radiometer 41
Chapter 7 Electromagnetic Specifications 42
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Chapter 1 Introduction
List of Figures
Figure 1-1 External, front view 6
Figure 1-2 External, rear view 6
Figure 1-3 Internal, view from top 8
Figure 1-4 Power supply 9
Figure 1-5 LED light current assembly 10
Figure 1-6 Block diagram 11
Figure 2-1 Locating the two filters on backside of enclosure 14
Figure 2-2 Measuring distance 18
Figure 2-3 Adjusting the potentiometers 19
Figure 4-1 Removing the lens 28
Figure 4-2 Removing the LED light panel 29
Figure 5-1 Enclosure and its attachments 33
Figure 5-2 Enclosure and its attachments 34
Figure 5-3 LED light panel (item # 1) 37
Figure 5-4 Enclosure (item # 2) 38
Figure 5-5 LED light current assembly (item # 3) 38
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Chapter 1 Introduction
In this chapter:
1.1 About this manual
1.2 Product description
1.3 Pictorial introduction to the neoBLUE system
1.4 Before you start
1.5 Contacting Natus Technical Support
1.1 About this manual
1.1.1 Overview
This manual contains information needed for servicing the neoBLUE Phototherapy System.
•Description of the product and overview illustrations (Chapter 1)
•Maintenance procedures (Chapter 2)
•Troubleshooting guide (Chapter 3)
•Repair procedures (Chapter 4)
•Parts and ordering information. (Chapter 5)
•Measuring the neoBLUE light with a radiometer (Chapter 6)
•Electromagnetic Specifications (Chapter 7)
1.1.2 Intended users
This service manual is written for qualified biomedical technicians. It describes service tasks which could
lead to injury, or which could damage the device, if attempted by a person without the requisite skills.
1.1.3 Manual conventions
Precautionary information is emphasized by being labeled as warning, caution or important. Other
explanatory information is highlighted with the word Note.
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Chapter 1 Introduction
Type of information
Usage
WARNING
Identifies conditions or practices that may result in injury or
death to the patient and/or user. Warnings are boxed and
preceded by a hazard symbol.
CAUTION:
Precedes an action that may result in damage to or
malfunction of the device.
Important!
An instruction provided to help ensure correct clinical results
and provide quality assurance to the phototherapy
procedures.
Note:
Background information provided to clarify a particular step
or procedure. Information in this category is not considered
precautionary.
Throughout the manual, when parts are referred to in figures or in the text, the Item Number from the
Parts List (Chapter 5) is used to identify the part.
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1.2 Product description
The neoBLUE®LED Phototherapy System consists of two products – the neoBLUE Phototherapy light
source (light) and the neoBLUE Phototherapy Roll Stand (roll stand). These components provide a floor-
standing, mobile, phototherapy light that delivers a narrow band of high-intensity blue light via blue light
emitting diodes (LEDs) to provide treatment for neonatal hyperbilirubinemia.
Blue LEDs emit light in the range of 400 – 550 nm (peak wavelength 450-475 nm). There are two light
intensity settings, high and low. The light output was factory calibrated with the neoBLUE®Radiometer to
provide an initial intensity of 35 µW/cm2/nm at the high setting and 15 µW/cm2/nm at the low setting at a
distance of 12 inches (30.5 cm) from the light enclosure to the baby. The light output can also be adjusted
using the two potentiometers (located on the side of the light enclosure) to accommodate different
distances.
WARNING Eye Protection: Do not look directly into the LEDs. Some
people are sensitive to blue light in the environment. Amber
safety glasses shield sensitive eyes, minimizing the effects of
the blue light.
LEDs have minimal light output degradation over their lifetime with proper use. Nevertheless, the user
can adjust the output of the LEDs for any degradation using the two potentiometers. Life testing has
shown neoBLUE LEDs can emit high intensity phototherapy for over 40,000 hours. Actual results may
vary based on environmental factors and adjustments to the potentiometers.
The roll stand is designed to hold 8 lbs of weight with a base designed to accommodate the weight
distribution of the light enclosure at any height or angle.
WARNING If an alternative stand is used, care must be taken to validate
the load capacity.
The light is mains-power operated. The power cord plugs into a receptacle at the power inlet at the back
of the light enclosure. A power cord strain relief bracket is provided to hold the power cord in place.
1.3 Pictorial introduction to the neoBLUE system
This section is meant to acquaint you with the various views of the neoBLUE light that you will see in the
course of troubleshooting and repairing it. The item numbers and names used in the Parts List (see
Chapter 5) are used throughout the book whenever parts are discussed.
These pictures show the front and rear views of the light enclosure, and internal views showing where the
major components are located and some details. Also included is a block diagram.
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Chapter 1 Introduction
FIGURE 1-1 EXTERNAL,FRONT VIEW
Item
Description
Notes
2
Enclosure
8
Light intensity rocker switch
Sets intensity to high or low
9
Target light rocker switch
Controls red target light; momentary action
33
On/standby switch
Lights up when device is on
FIGURE 1-2 EXTERNAL,REAR VIEW
8
33
9
2
12
7
29
6
12
34
30
2
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Item
Description
Notes
2
Enclosure
6
Lens
7
AC power entry module
Includes fuses
12
Enclosure fan filter assembly
Consists of a cover, filter, and backplate
29
Thumbscrew
For attaching enclosure to roll stand
30
Locating post screw
Slotted
34
Timer
Counts hours device is on
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Chapter 1 Introduction
FIGURE 1-3 INTERNAL,VIEW FROM TOP
Item
Description
Notes
1
LED light panel
4
LED light current assembly
5
Power supply
6
Lens
7
AC power entry module
Includes fuses
8
Light intensity rocker switch
For selecting intensity level
9
Target light rocker switch
Indicates center of treatment area
11
Vent Guard
A
Mounting plate
Mounts light to roll stand
33
On/standby switch
Lights up when device is on
34
Timer
Counts the hours the device is on
8
33
9
A
11
34
4
6
5
1
7
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