Ohmeda light II Manual

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Halogen Phototherapy Light II
Operation and Maintenance Manual
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1.2 SPECIFICATIONS
Size: Lamp and arm fully extended - 34 inches long
Lamp housing and yoke 12 inches long by 6-1/2 inches wide by
4-1/2 inches high
Weight: Rail/Wall Mount Model - approximately 24 pounds unpacked
Floor Stand Model - approximately 37 pounds unpacked
Voltage: 115 volts 60 Hz
Current: 8.5 amp
Fuse: 3 amp, 125 volts, 1-1/4" slo-blow
Lamp type: Halogen, 150 watt, 20 Volt, type Burton
Irradiance: 3 to 76 microwatts/square centimeter/nanometer in the
425-475 nanometer spectrum at bed level, depending on
lamp to patient distance.
Lamp intensity: 6,500 foot candles
Lamp spot size: Variable from 3 to 20 inches depending on aperture
size selected and light to mattress distance.
Lamp color temperature: 3,150 degrees Kelvin
Average lamp life rating: 1,800 hours (lamp life will vary between
1000 and 3000 hours typically)
Leakage current: With the ground wire open .less than 100 micro
amperes. * >
With the ground wire closed less than 5 micro
amperes. *
*Measured at any exposed metal surface on 115 volt
units.
page 3

2/ SETUP AND CHECK OUT PROCEDURE
..or
The Phototherapy Light should only be installed by qualified
service personnel.
Follow the instructions carefully to ensure proper mounting
and safe operation. Because of the variety of possible
mounting configurations you may have to order specialized
hardware. Hardware requirements for some applications are
as follows:
1. Rail Mounting - For installation on the Ohmeda Infant
Warmer System order a rail mounting kit (Stock no.
6600-0051-800) .
2. Wall Mounting - Two 3/8x3 inch lag screws are
provided. This hardware is satisfactory when properly
installed on a typical wood frame drywall. However,
different hardware may be required for other wall
constructions.
2.1 INSTALLATION ON THE INFANT WARMER SYSTEM ^
WARNING: These mounting instructions must only be carried
out by qualified service personnel. Be sure to install all
components in the proper order and orientation.
CAUTION: Do not allow the wires to be pinched during
installation.
Verify that-t*he following parts are included:
Qty. Description
2 Cover plates
Hole plug
Arm end cap
Transformer housing assembly with wire harness
Backplate for transformer housing
Plastic washer
Friction plug
Spring-
Threaded plug
Lamp-head assembly with wire harness /mi)^
3/16 inch hex key wrench ^^
Container of grease
Lag screws
page 4

Tools Required:
3/16 inch hex key wrench (included)
9/16 inch nut driver or socket wrench
Medium size flat blade screwdriver
Mallet =- ri
Insert the mounting bracket studs through the holes in
the backplate and the transformer housing (Fig-ure 2) .
Secure the transformer housing and backplate- to the
mounting bracket. Use two nuts as shown in Figure 2.
Tighten the nuts.
Mounting
Bracket
Slid*
Bracket
Power Cord
Nuts
NOTE: The articulating arm and the lamp-head assembly
have been removed to show the bracket assembly in
expanded detail. -
Figure 2. Bracket Mounting Assembly
page 5

4. Attach the lamp-head and articulating arm assembly to
the transformer housing (Figure 3):
a. Remove the wire cover panel from the extension arm.
b. Position the extension arm wires inside the arm as
shown•
c. Route the wires from the articulating arm through
the unpainted pivot cylinder into the extension arm.
d. Connect the articulating arm wires to the extension
arm wires according to color. Mate brown to brown
and blue to blue. Push the unused connector and the
excess wire back into the extension arm.
e. Attach the wire cover panel to the underside of the
extension arm.
f. Lightly lubricate the unpainted pivot cylinder and
carefully slide it into the mating hole in the
articulating arm. Reposition the wires if
necessary.
NOTE: A washer is fitted between the extension arm
and the articulating arm. This washer is required
for proper arm operation.
g. Insert the brass friction plug, concave surface
first, into the hole in the rear of the articulating
arm. Insert the spring and threaded plug to hold
the friction plug firmly against the pivot cylinder
(Figure 3) . Tighten the plug until it is flush with
the housing.
h. Use a plastic mallet to gently tap the black end cap
into the open end of the extension arm.
i. Use the painted hole plug to cover the top of the
hole where the pivot cylinder was inserted into" the
articulating
arm.
5. Remove the end cap from the upright onto which the
Phototherapy Light is to be mounted.
NOTE: Mounting the Phototherapy Light on the right hand
rail allows unrestricted lamp-head positioning.
6. Loosen the screws on the slide bracket so that the
bracket fits into the dovetail rail (Figure 2).
7. Slide the slide bracket into the rail and position it. ^%
Firmly tighten the screws to secure the bracket (Figure l
2)..
page 6

I0&\
8. Slide the mounting bracket on the rear of the
transformer housing into the slide bracket on the Infant
Warmer
rail. The power cord must exit from the bottom
(Figure 2) .
9. Attach the two cover plates to the transformer housing.
Peel the paper backing off of the adhesive strips and
fit the cover plates into the recesses on the top and
bottom of the transformer housing (Figure 2).
10. Replace the end cap for the Infant Warmer upright.
Hot* Plug
,_ LJJ Inrnl u
Friction Phig
Spring
Threaded Plug
Articulating
Arm Wires
Extension
Arm Wires
Wire Cover Panel
Figure 3. Assembling The Phototherapy Light
page 7

11. Check the movement of the Phototherapy Light by moving
the articulating arm up and down approximately +/- 40
degrees, and horizontally back and forth through 320 .
degrees. Verify that the articulating arm moves freely
and will remain in position.
12. Adjust the spring tension in the articulating arm if
required.
a. Locate the notch on the underside of the joint
between the lamp-head and the articulating arm
(Figure 4).
Figure 4. Tension Joint
b. Rotate the lamp-head counterclockwise until the
notch lines up with a hex head screw at the top of
the joint.
c. Turn the screw clockwise to increase tension and
counterclockwise to decrease tension. Use the 3/16
inch hex key wrench supplied with the unit. Check
•-- that the lamp-head assembly does not move more than
one inch after being positioned.
13. Complete the electrical safety check, the checkout
*: procedure, and a leakage current test before using the
Phototherapy Light on a patient.
page 8

jgi^N
2.2 WALL MOUNTING INSTALLATION
WARNING: These mounting instructions must only be carried
out by qualified service personnel. Be sure to install all
components in the proper order and orientation.
CAUTION: Do not allow the wires to be pinched during
installation.
Verify that the following parts are included:
Qty. Description
2 Cover plates
Hole cover
Arm end cap
Transformer housing assembly with wire harness
Backplate for the transformer housing
Plastic washer
Friction plug
Spring
Threaded plug
Lamp-head assembly with wire harness
3/16 inch hex key wrench
Container of grease
Lag screws
Tools Required:
Electric drill with 1/4" x 1-1/2" drill bit
3/16 inch hex key wrench (included)
9/16 inch nut driver or socket wrench
Medium size flat blade screwdriver
Mallet
1. Locate a wood stud in the wall near the desired mounting
position. Draw a vertical line over the stud at the
mounting height.
2. Use the backplate as a template to mark the location of
the mounting holes on the vertical line drawn in step
one.
3. Drill two holes (1/4 inch diameter) to the the required
depth (approximately 1-1/2 inches) at the locations
marked in step 2.
4. Place the transformer housing on top of the backplate
with the power cord exiting from the bottom of the
housing. Use the two lag screws provided to secure the
assembly to the wall (Figure 5).
NOTE: This requires two people, one to support the
Phototherapy Light and another to tighten the screws.
page 9

Washer I
pivot
Cylinder
&
Wire Cover Panel
Lag Screws
Cover Plats
Adhesive Strips
Transforms?
Housing
Wood Stud
Power Cord
Figure 5. Wall Mounting the Phototherapy Light
page 10
/*%
/*"%

Articulating Arm
Lamp-head
f* IfttT
Bod Cap Caster Mounting)
Figure 6. Assembling The Floor Stand Phototherapy Light
page 15
(Detail of

2.4 CHECKOUT PROCEDURE
A. Mechanical Checks
1. Check the overall appearance of the Phototherapy Light
for any signs of damage.
2. Check that the Phototherapy Light is mounted securely to
the Infant Warmer upright, suitable wall, or floor stand
assembly.
3. Move the articulating arm back and forth and up and
down. Verify that the arm moves freely and will stay in
position.
4. Rotate and reposition the lamp-head assembly. If the
lamp-head moves more than one inch after it is
positioned, adjust the tension as detailed in Section
4.4.
5. Check that the lens assembly is mounted securely to the
lens housing. If necessary tighten the set screw on the
underside of the lens bezel.
6. For floor stand models, check that the pole assembly is
securely mounted to the base. Tighten the mounting set
screw if necessary.
7. Check the power cord for any visible damage. Have a
qualified service person change the power cord if
necessary.
B. Performance Checks
1. Plug the power cord into an appropriate power source.
2. Switch on the Phototherapy Light.
3. Check for warm air exiting the rear of the lamp-head
assembly. This indicates that the fan is working.
CAUTION: Do not operate the Phototherapy Light if the
cooling fan is not working.
4. Check light illumination.
5. Turn the aperture control wheel on the underside of the
head and .verify that the spot size changes.
page 16
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If the unit fails any part of the checkout; procedure it must
be repaired and tested before use on a patient.
page 17

3/ OPERATION
WARNING: Do not open the lamp-head assembly with power
connected. An electrical shock hazard exists.
CAUTION: To avoid overheating, do not cover any of the
vents in the lamp-head assembly and do not operate the light
if the cooling fan is not operating. Check for warm air
exiting the rear of the lamp-head assembly during operation.
3.1 CONTROLS
(Figure 7)
A. On/Off Switch
On the rail/wall mounting model the On/Off switch is located
on the column at the top of the transformer housing. On the
free standing model the On/Off switch is located at the top
of the pole.
B. Aperture Control Wheel
Spot size is a function of the aperture size and the
distance between the bed and the light. To change the
aperture size rotate the aperture wheel located on the
underside of the lamp-head.
page 18
/^S^ffiv

Figure 7a. Phototherapy Light Controls (Rail/Wall Mounted
Model)
Figure 7b. Phototherapy Light.Controls (Floor Stand Model)
page 19

3.2 OPERATING PROCEDURE
WARNING: Do not open the lamp-head assembly with power
connected. An electrical shock hazard exists.
CAUTION: To prevent over heating, do not block any of the
vents in the lamp-head assembly and do not operate the light
if the cooling fan is not working. Check for warm air
exiting the rear of the lamp-head assembly during operation.
1. Connect the Phototherapy Light power cord to an
appropriate power source.
2. When using the floor stand model, carefully position the
stand assembly near the patient.
3. Adjust the lamp-head assembly to the desired position.
4. Switch the power on.
5. Aim the light beam to the desired area.
6'. Use the largest of the four available aperture sizes for
phototherapy.
WARNING: Prolonged exposure to the ultraviolet radiation
emitted by this light may harm the unprotected eyes of the
infant or operator. For safety cover the infant's eyes and
avoid looking directly at the light.
WARNING: The irradiance intensity received by the patient
varies rapidly as the distance between the patient and the
light changes. Refer to Table 1, Distance Vs. Irradiance.
Table 1 - Distance vs. TrraHianr*
This table lists typical irradiance levels of
highest intensity at various mounting heights
over the patient bed surface. Irradiance levels
will vary within the light circle.
Distance between lamp-head
and patient (inches)
Typical Irradiance
(uw/cm x cm/nm)*
15
20
25
30
35
64.97
33.20
19.98
13.48
9.66
♦Measured at the center of the light circle with a
new lamp installed.
page 20

/$pfc\
4/ OPERATOR MAINTENANCE
WARNING: After completing a repair of the Phototherapy
Light perform the checkout procedure to make sure the unit
is in proper operating condition. Also perform an
electrical safety check and a leakage current test.
4.1 REPAIR POLICY
Do not use malfunctioning equipment. Have the equipment
repaired by an Ohmeda Service Representative or by a
competent person who has training and experience in
repairing devices of this nature. Qualified service
personnel should refer to Section 5, Service, for
instructions. After repair, perform a leakage current test
to ensure the leakage current is within the listed
specification range. Always perform the checkout procedure
before using the equipment on a patient.
Repair and service by an authorized Ohmeda Service
Representative insures full reliability. If Ohmeda Service
is not available, parts listed in this manual may be
repaired or replaced by a competent person.
CAUTION: No repair should ever be undertaken by unqualified
personnel.
Replace damaged parts with those manufactured or sold by
Ohmeda.
Contact the nearest Ohmeda Service Office |for assistance.
If you send the unit to the Ohmeda National Service Center:
1. Use the original shipping container, if available.
2. Enclose a letter detailing the problem and the repairs
which may be needed.
3. Prepay the shipping cost.
In all cases, other than where Ohmeda*s warranty is
applicable, repair will be made at Ohmeda's current list
price for the replacement parts plus a reasonable labor
charge.
page 21

4.2 REGULAR ELECTRICAL SAFETY INSPECTION
To ensure maximum performance change the lamp after every 4 '
months of use or every 1200 hours of operation.
This unit does not require further routine maintenance, only
a regular inspection. Regularly inspect the power cord. If
the power cord is damaged or
appears to have deteriorated,
it should be replace by qualified service personnel.
Check the unit for normal appearance and operation as
described in
Section 2. If the unit fails to perform as
specified it must be removed from use and referred to
qualified personnel for service.
4.3 EXTERNAL CLEANING
WARNING: Disconnect the Phototherapy Light power cord and
allow the unit to cool for at least 30 minutes before
servicing. The Phototherapy Light operates at a high
temperature•
CAUTION: Do not rest articles or liquids on top of the "^
Phototherapy Light. Liquids will damage the lamp-head and
power supply assemblies causing an electrical shock hazard.
CAUTION: Use only lens cleaner or a similar, nonresidual
cleaning agent on the
lens. Residue buildups on the lens
can alter transmitted wavelengths.
Clean plastic and painted metal surfaces with amild
detergent solution. Clean the lens with lens cleaner or a
similar, nonresidual cleaning- agent. If sterilization is
necessary, use a cold sterilization agent safe for use on
the various light surfaces.
Apply the cleaning solution with a clean damp cloth or
sponge. Do not allow the cleaning solution to leak inside
of the Phototherapy Light. Liquids will damage the lamp and
transformer, resulting in an electrical shock hazard and
damage to the unit.
Dry the exterior surfaces with a clean soft damp cloth. Be
careful not to scratch the lens surface.
Dust the exterior surfaces with a clean soft cloth which is
free of any abrasive material. ^«^
page 22

4.4 LAMP REPLACEMENT
Reference Figure 8.
To ensure maximum performance change the lamp after every 4months
of use or every 1200 hours of operation.
WARNING: Disconnect the Phototherapy Light power cord and allow
the unit to cool at least 30 minutes before servicing. The
Phototherapy Light operates at a high temperature.
CAUTION: Be careful not to touch the small lamp or the inner
surface of the reflector around the lamp when installing a new
bull). Body oils may significantly lower the life expectancy of the
lamp.
1. Disconnect the power cord for the Phototherapy Light and allow
the unit to
cool for at least 30 minutes.
2. Locate the slotted screw head at the top of the lamp-head
assembly.
3. Use a screwdriver or coin to turn the screw 1/2 turn to unlock
the top cover.
4. Open the top cover (tilt the head to allow the cover to open
fully past the yoke).
5. The lamp shipped with the unit is wired into the holder to
prevent movement during shipment. Remove this copper wire and
discard it.
6. Lift the lamp straight up (at this point it is only held in
place by two spring wires) and unplug the white ceramic socket
from the bulb.
ULS£ "OPU
CAUTION: Use only halogen replacement lamps, type Burton (150
Watt, 20 volt) Ohmeda Stock Number 6600-0160-800. The use of
other lamps will affect the operating specifications of the
Phototherapy Light. Use of a higher wattage and/or lower
voltage lamp may also cause afire hazard.
7. Install a new lamp by aligning the lamp pins with the two small
holes in the socket and then pushing the socket toward the
bulb. It may help to wiggle the socket slightly while pushing.
8. Slide the lamp all the way down into the lamp bracket and under
the spring wires.
9. Close the top cover and fully tighten the slotted screw.
page 23

10. Complete the electrical safety check, the checkout
procedure, and a leakage current test before using the
Phototherapy Light on a patient.
Lamp Cage
Fan Blade
Fan Motor
Figure 8. Interior of Phototherapy Light
4.5 TENSION ADJUSTMENT
WARNING: Disconnect the Phototherapy Licfht power cord and
allow the unit to cool for at least 30 minutes before
servicing. The Phototherapy Light operates at a high
temperature.
Adjust the spring tension in the articulating arm -if the
lamp-head assembly moves more than one inch after being
positioned.
1. Disconnect the power cord for the Phototherapy Light and
allow the unit to cool for at least 30 minutes.

2. Locate the notch on the underside of the joint between
the lamp-head assembly and the articulating arm (Figure
9).
Tension Joint
Figure 9. Tension Joint
3. Rotate the lamp-head counterclockwise until the notch
lines up with a hex head screw at the top of the joint.
4. Turn the screw clockwise to increase tension and
counterclockwise to decrease tension. Use the 3/16 inch
hex key wrench included with the unit. Check that the
lamp-head assembly does not move more than one inch
after being positioned.
5. Complete the electrical safety check, the checkout
procedure, and a leakage current test before using the
Phototherapy Light on a patient.
4.6 FUSE REPLACEMENT
WARNING: Disconnect the power cord before replacing the
fuse.
WARNING: For continued fire protection, replace the fuse
with another of the same type and rating.
1. Disconnect the power cord for the Phototherapy Light.
2. Turn the fuse holder cap counterclockwise to remove the
fuse.
page 25