Ohmeda IWS 2001, IWS 3000, IWS 3050, IWS 3100, IWS 3150 Operation And Maintenance Manual

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Page 1

Ohio@ Infant Warmer Systems

All Models

and Maintenance Manual

Page 2

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 accor- dance 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 immediately. Should such repair or replacement become neces- sary, 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 the prior written approval of Ohmeda’s Quality Assurance Department. 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: Federal law in U.S.A. and Canada restricts this device to sale by or on the order of a licensed medical practitioner.

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Model Descriptions v

Definitions vii

Precautions ix

l/Description l-l

Warnings ix

Cautions xiii

1.1

General l-l

1.2 Support Structure l-l

1.3 Heater Assembly l-l

1.4 Control Unit l-2

1.5 Bed Platform l-2

1.6

Bassinet l-2

1.7

Accessories

l-3

S/Setup and Checkout Procedure

2.1 Setup 2-l

2.2 Mechanical Checkout Procedure 2-l

A. Overall Appearance 2-l B.

Heater Assembly Rotation 2-2 C. Mechanical Checks 2-2 D.

Warmer/Bassinet Interlock (model 3500 only)

Warmer/Bassinet Unlock 2-3

Accessory Checks 2-3

G. Wall Mount Checkout 2-4

2.3 Control Unit Checkout Procedure 2-4 A. Control Unit Check 2-5

Elapsed Timer Check 2-6 Observation Light Check 2-6

Raise and Lower Bed Switch Check (Elevating Models

Only) 2-6

Interlock Switch Check 2-7

Power Failure, Memory and Battery Test (all models except the

2001 International) 2-7

3/0peration

3-1

2-1

2-3

3.1 Control Panel Operation 3-l A. Displays 3-l B.

Indicator Lights 3-2 C. Switches 3-2 D. Alarms 3-4

3.2

Manual and Servo Mode Operation

3.3

Elapsed Timer Operation 3-11

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Table of Contents

3.4

Bassinet Operation (model 3500 only) 3-11

3.5

Bed Platform Operation 3-12

3.6

Side Panel Operation 3-13

3.7

X-ray Procedures 3-14

3.8

Oxygen Administration 3-16

3.9

Gas Cylinder Installation and Operation 3-16

3.10

Mounting Accessories 3-18 A.

Mounting and Releasing Procedure

Adapter

ECMO Adapter 3-20

3.11

ThermaLink Using the Serial Data Interface Using the Nurse Nurse

3.12

Rotating Drawer Option 3-22

Plate Mounting and Releasing Procedure

Options 3-20

Call

checkout 3-22

CaII

System Interface

3-19

3-21

4KXeaning

and Disinfecting 4-1

Appendix A-l

4.1

Cleaning 4-l

4.2

Wood Surfaces (model 3500

4.3

Reusable Skin Temperature

Temperature Conversion Chart A-l Servo Mode Algorithm A-2 Infant Warmer System Specifications

Electrical A-2

Controller A-3 Alarms Environmental Specifications Electromagnetic Compatibility

Mechanical (Without Accessories) A-6

3500 Bassinet A-7 Accessories A-8 Radiant Energy Distribution A-10

Thermalink

Serial data A-10 Nurse

Installing

Pre-Installation Preparation Warmer Installation A-14

A-4

Option Specifications A-10

CaII

specifications

waII

mounted units

only) Probe

A-5

A-12

A-13

A- 13

4-2

A-2

(EMC)

A-6

Warranty W-l

Page 5

2001 IWS (international)

3000

IWS

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Model Descriptions

All models of the Ohmeda Infant Warmer System provide a controlled

source of radiant heat for infants and pediatric patients. The control sys- tem uses a microprocessor and provides both manual and servo modes of operation (except for the 2001 International, which is manual mode only).

The model 2001 International has an integral infant bed and is a manual mode only warmer designed for short term attended care in the OR and L&D.

The wall mounted 3050, 3100 and 3150 models are available to accommo- date specific architectural requirements in the NICU, L&D, LDR and LDRP room

The 3050 is a heater head only, the 3100 is a heater and dove tail

rails, and the 3150 includes a heater, rails and integral bed. The model 3300 has an integral bed for infants and is intended for proce-

dures and long term care in the Nursery and L&D. The model 3000, 3500 and 4000 are free standing Warmers which can be

used over a variety of infant bassinets in the general nursery, over post- operative patients, during patient feeding, and in any other application where controlled radiant heat is required.

The 3500 System also has a detachable Bassinet for infants, and is in-

tended for procedures and long term care in the Nursery, L&D, LDR and

LDRP Rooms. The model

4300,440O

and 5000 have a larger size bed than the model 3300 and are intended for surgical procedures and long term care in the Nursery and L&D Rooms. Both the 5000 and 4400 have an elevating pedestal to raise and lower the bed-to-floor height. The model 4400 has a narrower

foot print than the 5000 warmer. The model 4300 is a non-elevating version of the 4400.

IWS Model Options

Large Heater/Bed

4000

5000

Series Series 4000

Free Standing Wall mounted,

heater head only Wall mounted heater

with rails

Wall mounted heater with rails and bad

Standard Heater/Bed 2000 3000

3500

Series Series Series

3000

3500t

3050

3100

3150

Free standing with integral bed

Elevating pedestal

t Detachable bassinet and wood

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grain

2001

finish standard.

3300

4300 4400 5000

Page 7

AWarnings

Operator Safety

Before using the Ohmeda Infant Warmer System, read this entire manual. Attempting to use this device without a thorough understand- ing of its operation may result in patient or user injury. This device should only be operated by personnel trained in its operation and under the direction of qualified medical personnel familiar with the risks and benefits of this type of device.

Overloading the shelves can affect the stability of the unit. Limit the load to 20 lbs. (9 kg) per instrument shelf, mounted to a single upright, and

50 lbs. (23 kg) per monitor shelf, mounted between the uprights.

Limit the load of accessories to 50 pounds (23 kg) per side on the Warmer

to ensure stability. Accessories should not be mounted more than

56 inches (142 cm) above the floor. For models 3000 and 3500, limit the load of accessories to 20 pounds (9 kg) maximum per side mounted no

more than 44 inches (112 cm) above the floor. Limit the load placed on the x-ray cassette tray to 5 lbs (2.2 kg) to avoid a

tipping hazard.

Overloading the drawers can affect the stability of the unit. Limit the load

to 10 lbs. (4.6 kg) per drawer. Do not use the Warmer in the presence of flammable anesthetics; a

possible explosion hazard exists under these conditions. Do not touch the protective grill under the radiant heater or the top of the

heater assembly. These surfaces may be hot and a burn could result. Due to the increased height of units with the ECMO option installed, a

tipping hazard may exist if tip loading occurs. Limit the total accessory load to 50 lbs. (23 kg), no more than 25 lbs (11 kg) per side.

Use caution when rotating the cabinet to avoid damage to the drawers or possible injury. Always ensure the drawers are fully closed before rotating the cabinet.

Disconnect power to the Warmer and allow the heater rod to cool before

cleaning to avoid the possibility of a burn.

Never oil or grease oxygen equipment. Oils and grease oxidize readily, and in the presence of oxygen, will burn violently. Vat-Kote is the only oxygen service lubricant recommended (Ohmeda Stock No. 6700-0092-

200) if the use of a lubricant is specified. Disconnect the Warmer power cord and allow the unit to cool before

replacing the alarm or observation lights. On elevating models, check for proper clearance above the Warmer and

below the bed surface before raising or lowering the bed.

Enclosing the heater assembly inside a cabinet may prevent proper ventilation and may create a fire hazard. If the heater is enclosed in a cabinet, it must be equipped with a power cut-off device that prevents operation while the cabinet is closed.

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Precautions

Keep hands clear of the hinge area when installing a wall mounted heater assembly. A pinch hazard exists.

The 3050 heater assembly weighs approximately 30 lbs (14 kg). Proper installation may require two people. Due to the weight of the 3100 and 3150 units, approximately 75 lbs. (34 kg), proper installation will require two people.

Patient Safety

Bed-to-heater spacing which differs from the specified 27

(69

5 cm)will result in incorrect operation and may affect the patient’s

condition.

Do not place any accessories or any other objects directly over the bed

surface. This may block radiant heat and lead to cooling of the infant.

Do not place items on top of the heater assembly. Items placed on top of the heater assembly can fall and injure the patient, prevent adequate ventilation of the heater assembly, and may pose a fire hazard.

Do not perform the Checkout Procedures (Mechanical and Control Unit) while a patient occupies the Warmer.

2 inches

Complete the “Checkout Procedures” section of this manual before putting the unit into operation. If the warmer fails any portion of the checkout procedures it must be removed from use and repaired.

Regularly inspect the bed side panel latching mechanism, and the bed- side locking mechanism on the model 3500, to ensure proper operation.

In the service position the strength of the wall mounted unit hinge bracket is reduced. Never place a patient in the bed when the heater is in the service position. Never leave the unit unattended in the service position or with a pin removed.

Check for proper clearance above the Warmer and below the bed surface before raising or lowering the bed.

Inspect all patient connected tubes or wires before and after moving or tilting the bed. Tilting or moving the warmer bed up or down can pull on tubing or leads connected to the patient. This may disconnect tubes or leads, restrict gas or liquid flow, or move sensors out of position.

Prolonged exposure to the light emitted by the observation lamp in this unit may harm the unprotected eyes of the infant. For safety, cover the infant’s eyes.

Do not use the Warmer system if the system failure alarm is activated. Remove the unit from service and refer to qualified personnel for repair.

Radiant energy can adversely affect blood components. When using intravenous tubing systems for delivery of blood components to patients occupying a warmer, shield any tubing with aluminum foil.

When using a radiant warmer, change the patient’s diapers frequently.

Radiant energy causes more rapid urine evaporation, and may lead to

inaccurate urine diagnostic test/ analysis and inaccurate weight mea-

surements.

*1109/936600-0194.000

Page 9

Precautions

Do not install chest drainage tubes in the Tubing Organizer Rear Side Panel.

Install tubing in the appropriately sized holes. Use of inappropriate holes

may cause kinking, pinching or restriction of flow through the tubes, and may interfere with the proper operation of therapy equipment.

Do not lower the Tubing Organizer Rear Side Panel with tubing attached.

Lowering can pull on the tubing, causing the tubes to dislodge from the

patient.

Do not move the warmer by pushing or pulling on the bed side panels.

This action may lead to the deterioration and breakage of the compo-

nents which form a safety barrier around the infant.

Ensure that the bedside panels are locked in position when a patient

occupies the bed. Blankets or other foreign objects may prevent the

latches from fully engaging. Do not leave the patient unattended when the side panels are lowered. Never place an infant on the X-ray cassette tray.

Do not place any foreign objects on the warmer bed or in the under bed cavity while performing X-ray procedures. Incompatible materials in the path of the X-ray may adversely affect the quality of the X-ray image. Use of mattress or bedding materials other than those supplied by Ohmeda should be evaluated by a Neonatologist or Radiologist.

Do not leave the patient unattended when using the warmer. Check the patient’s temperature regularly to ensure the comfort and the safety of the patient. If the warmer is used for an extended time, it is recom- mended that the servo mode of operation be used. When an alarm is silenced, close monitoring of the patient’s condition is required.

Use the servo mode unless the manual mode is specifically prescribed.

While both modes require patient monitoring, the manual mode requires constant attention. In the manual mode, you must take the

for detecting changes in the environment (drafts, direct sunlight, therapy lamp usage, etc.) or the patient condition requiring heater

adjustments in response to these changes. In the servo mode, the infant

warmer automatically adjusts heater output to maintain the desired skin temperature, reducing (but not eliminating) the need to monitor the patient and make adjustments to the equipment.

Use of electrosurgical units or other electrical field radiating equipment can affect the operation of the warmer. Keep the patient probe lead as far away as possible from electrosurgical cables. Do not allow excess electri- cal cables to be laid on the bed platform. Use of electrosurgical units or other instruments which radiate electrical fields can cause indirect heating, by several tenths of a degree of the skin temperature probe due to absorbed electrical energy. When using these devices near the radiant warmer, operate the Infant Warmer in manual mode for maximum safety.

The use of phototherapy equipment may raise the patient’s temperature.

responsibihty

photo-

Radiant warmers increase an infant’s insensible water loss. Take appro- priate measures to maintain the patient’s fluid balance while caring for them in a radiant warmer.

Use only the Reusable Ohmeda skin temperature probe (Stock No. 0208-

0697-700) and heat reflective patches (Stock No. 0203-1980-300,

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50/pkg)

Page 10

Precautions

or the disposable probe (Stock No. 6600-0208-700, 6600-0196-700.

50/pkg)

to monitor the patient’s skin temperature. Use of

lO/pkg;

Stock No.

other manufacturer’s probes may affect the accuracy of warmer opera-

tion and the electrical safety of the patient.

The skin temperature probe should be located on the patient’s skin in an

area which is directly in the path of the radiant heat. It should not be

attached to an area which is shielded from the radiant heat or between

the patient and the mattress. Large temperature gradients and very long

servo response times will result from improper probe placement. Rectal temperatures must never be used to servo control a patient’s

temperature. Intimate contact between the skin temperature probe tip and the

patient’s skin must be maintained for accurate skin temperature mea- surement. Underheating or overheating may result from poor contact between the skin temperature probe and the patient. Verify that the skin temperature probe is securely attached to the patient at least once every half hour.

In the servo mode, verify that the patient temperature probe is securely attached to the patient at least once every half hour. A dislodged probe may not trigger an alarm. If the probe becomes dislodged, the warmer can over or under heat the infant.

Oxygen concentrations higher than 40% can increase the risk of

retrolen- tal fibroplasia (retinopathy or prematurity). It is probable that even concentrations of 40% or less oxygen (formerly considered safe) could be dangerous to some infants. Therefore, arterial blood gas measurements are extremely important for regulation of the concentration of inspired oxygen when an oxygen-enriched environment is considered necessary. (See current edition of “Standards and Recommendations for Hospital Care of Newborn Infants” prepared by the Committee of Fetus and Newborn of the Academy of Pediatrics.)

Do not leave both cylinder valves open. Leaving both oxygen cylinder valves open at the same

time will allow simultaneous depletion of both

cylinders with no reserve oxygen supply available.

Use only one cylinder gasket per yoke. Use of more than one gasket could

cause leakage of the cylinder gas

Do not leave gas cylinder valves open if the pipeline supply is in use. Pressures from both oxygen cylinders may become equal, and if simulta- neously used, cylinder supplies may be depleted, leaving no reserve supply in case of pipeline failure.

The patient probe is not isolated from earth ground. Any additional equipment used with the Ohmeda Infant Warmer System must comply with UL 544, CSA 22.2, IEC 601 and VDE 750.

Xii

The computer or RS-232 monitor’s user program must continuously check the data link. The program should constantly verify connection to the warmer controller and check for updated data.

Remote monitoring does not replace the need for direct patient

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observa-

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Precautions

ACautions

tion by qualified medical personnel. If you connect the Nurse Call output to a system which uses a normally

open connection, a disconnected Nurse Call cable will not trigger an alarm.

When installing a wall mounted unit, to achieve adequate structural strength all four holes of each mounting bracket must engage tracks. Should the hole saw miss a track do not proceed. Consult the project engineer for further direction.

To prevent the drawers from opening unintentionally while moving the

3500 Bassinet, move it from the front only.

On elevating models, do not continue to run the motor at the upper and lower limit positions; equipment damage may result.

Yoke check valves are not intended to provide a leak-free seal; always use a yoke plug and a fresh cylinder gasket to seal an unused cylinder port.

Open cylinder valves S-L-O-W-L-Y to avoid damaging the regulators. Use cleaning solution sparingly on a cloth when cleaning the Warmer. Do

not saturate the unit components.

Use of cleaning/disinfecting solutions containing chemicals that are not

listed in the table on page 4-2 (i.e. alcohol, acetone, etc.), or chemicals in greater concentrations than those listed, may damage the patient probe or other material being cleaned.

Do not autoclave or gas sterilize the skin temperature probe. Do not immerse the probe in liquid cleaner. Avoid placing excessive strain on the probe lead. Always remove the probe by grasping the plug at the panel. Do not pull on the probe lead. These precautions will help avoid damage to the probe.

Do not autoclave or gas sterilize the mattress.

Only competent individuals trained in the repair of this equipment should attempt to service it as detailed in the service manual. The Service Manual provides detailed information solely for use by individuals having proper knowledge, tools and test equipment, and for service representa- tives trained by Ohmeda.

excessive solution causes damage to internal

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. .

Xlll

Page 12

In this section

1.1 General

1.1

General l-l

Support Structure

1.2

Heater Assembly

1.3

Control Unit l-2

1.4

Bed Platform l-2

1.5

Bassinet (3500 Series) l-2

1.6

Accessories l-3

1.7

All models of the Ohmeda Infant Warmer System provide a controlled

source of radiant heat for infants and pediatric patients. The control

system uses a microprocessor and provides both manual and servo modes of operation (model 2001 International is manual mode only). The patient temperature, control temperature, and elapsed time displays are digital for ease of viewing. The control panel includes a one hour elapsed timer with time displayed in minutes and seconds. The timer features optional audible tones for use during Apgar scoring. A complete audio and visual alarm system is included on the control panel.

l-l

The optional 232 serial data is provided for use with customized research software or compatible vital signs monitors. The Nurse Call connection lets you integrate the Warmer into your current or future remote alarm systems.

1.2 Support Structure

The support structure provides excellent stability for the radiant heater and optional accessories. On free standing units, the support structure consists of the base assembly and the uprights with an integral rail system. The rails provide a means for mounting accessories and ancillary equipment to the unit. Refer to Section 1.7 for a description of the acces- sory items.

1.3 Heater Assembly

The warmer is designed to warm infants on a bed surface located 27

inches

WARNING: Bed-to-heater spacing which differs from the specified 27

2 inches

patient’s condition.

For your convenience, on Model bed-to-heater spacing is indicated by a label located on the right alumi- num upright (as viewed from the front).

2 inches

(69+5

ThermaLink feature simplifies charting and monitoring.

(69+5

cm) beneath the heater assembly.

cm) will result in incorrect operation and may affect the

3000,3100,3500, and 4000 the proper

RS-

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l-l

Page 13

l/Description

The heater assembly consists of a radiant heater, parabolic reflector, observation light, and a visual alarm light. The parabolic reflector focuses radiant energy on the bed surface, minimizing energy loss due to scatter- ing and providing an even field of radiant heat over the bed surface. The observation light provides intense light for procedures. The alarm light is located on the end of the heater assembly for ease of viewing. The entire heater assembly rotates to the side for X-ray procedures and for observa- tion lamp replacement.

1.4

Control Unit

The control unit contains the electronic circuits and controls used to

operate the radiant heater and the observation light. The control unit performs regular self checks during its operation including failure diag- nostics.

Either manual or servo mode of operation may be selected. In the manual mode of operation, the % power display on the control panel. The control circuit then main- tains the selected level of radiant heat. The manual mode has a preheat

setting which allows the Warmer to be preheated. In the servo mode of operation, select the patient’s control temperature. A skin temperature probe is used to monitor the patient skin temperature. The control system modulates the radiant heat to maintain the patient at the se- lected control temperature. The patient’s skin temperature is continu- ously displayed.

select the level of radiant heat output as indicated by

Alarms activate to alert the operator of a low or high patient tempera- ture, a skin temperature probe failure, a power failure, equipment failure or a check patient prompt.

1.5 Bed Platform

Warmers with beds include a mattress and transparent side panels. The

side panels fold down for easy access to the patient and can be removed

for cleaning. The X-ray cassette tray (located in an opening beneath the

bed when installed) pulls out for insertion of X-ray cassettes and allows

X-rays to be taken without moving the patient. * Markings located along the side panels allow easy location of the cassette in the X-ray tray

relative to the position of the patient on the warmer bed.* bed platform allows Trendelenburg and Fowler positioning. The hydrau-

lic system for the

avoid disturbing the patient. * A chest drainage hanger attached to the

bed and rear cross bar extrusion provides a convenient location to hang chest drainage devices. *

1.6 Bassinet (3500 Series)

The bassinet unit can be detached and rolled away from the model 3500

warmer unit by pulling up on the locking lever knob located at the top rear of the bassinet (see Figure l-l). The bassinet includes:

tiltable

The

tiltable bed provides a smooth, dampened motion to

l-2

Transparent locking side panels which fold down for easy patient

access and are removable for cleaning.

Not available on the model 3500 wanner

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l/Description

2. A mattress.

5. Front locking casters.

Figure l-l

Operating the bassinet locking lever knob

A tiltable, positive-lock bed platform which allows Trendelenburg

and Fowler positioning at 4” and 8“ tilt positions Three drawers which open from the front (or from the side in an

optional configuration) for storing equipment or supplies. The top

drawer is provided with a key lock.

1.7 Accessories

The rail mounting system is the basis for most of the accessories for the Warmer. This patented design consists of a dovetail shaped aluminum extrusion and a positive locking mounting block. Mounting blocks are

attached to various accessories for mounting to the rail system. The mounting blocks are produced in two standard lengths and are machined to accommodate each specific accessory.

Accessories which mount on a single upright are interchangeable be- tween all model Warmers.

Accessories can only be mounted to the inside dovetail rail on each

upright of the 3500 Warmer.

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l-3

Page 15

In this section

2.1 Setup 2-l

2.2 Mechanical Checkout Procedure 2-l A.

Overall Appearance 2-l

Heater Assembly Rotation 2-2

C. Mechanical Checks 2-2

Warmer/Bassinet Interlock (model 3500 only)

Warmer/Bassinet Unlock (model 3500 only)

Accessory Checks 2-3

G. Wall Mount Checkout 2-4

2.3 Control Unit Checkout Procedure 2-4 A.

Control Unit Check 2-5

Elapsed Timer Check 2-6

Observation Light Check 2-6 Raise and Lower Bed Switch Check (Elevating Models

Only) 2-6

Interlock Switch Check 2-7

Power Failure, Memory and Battery Test (all models except the 2001 International) 2-7

2-3

2.1 Setup

Refer to the setup instructions shipped with the warmer for initial unpack- ing and setup of the unit after shipment. For model 3050, 3100 and 3150

wall mounted units, refer to the mounting instructions in the Appendix. After removal from the shipping containers, inspect the Ohmeda Infant

Warmer System and all accessory items for any signs of damage which may have occurred during shipment. File a damage claim with the ship- ping carrier if damage has occurred. Also confirm the presence of all accessory items or factory installed options as listed on the packing slip.

Mechanical Checkout Procedure

2.2

WARNING: Before using the Ohmeda Infant Warmer System, read this entire manual. Attempting to use this device without a thorough under- standing of its operation may result in patient or user injury.

WARNING: Do not perform the Checkout Procedures (Mechanical and Control Unit) while a patient occupies the warmer.

WARNING: Complete the “Checkout Procedures” section of this manual before putting the unit into operation. If the warmer fails any portion of the checkout procedures it must be removed from use and repaired.

Overall Appearance

Disconnect the power cord from the ac power source for the mechani-

cal checks portion of this procedure. Check the overall appearance of the Infant Warmer/ Bassinet System.

2. There should be no obvious damage.

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2-l

Page 16

2/Setup

and Checkout Procedures

For the model 3500, separate the warmer from the bassinet.

3. For units with casters, check that all casters are in firm contact with

4. the floor and that the warmer is stable and moves freely.

For the model 3500, check that all six casters on the warmer move freely. Note: On the model 3500, it is possible that the two center casters may

not be in contact with the floor at all times.

Lock the two front casters and check that the warmer is held in place. On the model 3500, lock the two rear casters and check that the

warmer is held in place.

For the model 3500, place the bassinet on a level surface. Check that all four casters are in firm contact with the floor and that the Bassinet moves freely.

For the model 3500, lock the two front casters and check that the Bassinet is held in place.

Examine the power cord for damage. Replace the power cord if dam- age is evident.

Examine the unit for objects placed on top of the heater assembly.

WARNING: Do not place any accessories or other objects directly over the bed surface. This may block radiant heat energy and lead to cooling of the infant.

WARNING: Do not place items on top of the heater assembly. Items

placed on top of the heater assembly can fall and injure the patient, prevent adequate ventilation of the heater assembly, and may pose a fire hazard.

B. Heater Assembly Rotation

Rotate the Heater Assembly to the side and then back to the normal position. Check for a smooth rotation.

C. Mechanical Checks

Check the operation of the bed sides. The bed sides should operate smoothly.

WARNING: Regularly inspect the bed side panel latching mecha-

nism, and the bedside locking mechanism on the model 3500, to

ensure proper operation.

Check the operation of the tilt mechanism. Verify that the bed plat- form operates smoothly and locks in normal, Trendelenburg and Fowler positions.

2-2

If the drawer package is installed, check that all the drawers open and close freely. On units with the rotating drawer package, make sure the drawers rotate from front to 90” left and right and firmly stop in the detented positions.

WARNING Overloading the drawers can affect the stability of the unit. Limit the load to 10 lbs. (4.6 kg) per drawer.

For the model 3500 bassinet, remove the keys from the top drawer and lock it. Check that the drawer is securely held closed.

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2Betup

and Checkout Procedures

D. Warmer/Bassinet Interlock

Lock the 3500 warmer’s two rear casters.

1. Align the rear of the bassinet with the warmer’s base.

Push the bassinet into the alignment/locking track of the warmer’s

base. Continue pushing the bassinet until its locking pin drops into the

socket at the end of the alignment track. There should be an audible click when the pin drops into position.

Lightly push and pull the bassinet to verify that the two units are

securely held together.

Unlock the two rear casters on the warmer and check that the com- bined unit moves smoothly.

Warmer/Bassinet Unlock

Verify that the two bassinet front casters are unlocked and the two warmer rear casters are locked

With the locking pin handle (located at the rear of the bassinet)

raised, pull the bassinet forward until it is fully detached from the warmer

(model 3500 only)

CAUTION: To prevent the drawers from opening unintentionally while moving the detached bassinet, move it from the front only.

Accessory Checks

Perform these checks if they are applicable.

Check that all accessories are mounted securely and that the load limits are not exceeded.

Check that all gas accessories are installed and operating properly (refer to Section 3.9).

Where applicable, perform the checkout procedures detailed in the Operation and Maintenance Manuals for the accessories.

the

WARNING: Limit

side

on the Warmer to ensure stability. Accessories should not be

mounted more than 56 inches (142 cm) above the floor. For models

3000 and 3500, limit the load of accessories to 20 pounds (9 kg)

maximum per side mounted no more than 44 inches (112 cm) above the floor.

WARNING: Due to the increased height of units with the ECMO option installed, a tipping hazard may exist. Limit the total acces-

sory load to 50 lbs. (23 kg), no more than 25 lbs. (11 kg) per side.

load of accessories to 50 pounds (23 kg) per

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2-3

Page 18

2/Setun

Figure 2-1

Wall mount pin insertion

and Checkout Procedures

G. Wall Mount Checkout

Verify that the warmer is rigidly secured to the wall and the heater

assembly is level.

Note: To

procedures, either hinge pin may be removed, allowing the warmer to pivot away from the wall.

Check that both hinge pins are in place and fully inserted with the

pin heads at the top of the hinge. WARNING: In the service position the strength of the hinge

bracket is reduced. Never place a patient in the bed when the heater is in the service position. Never leave the unit unattended in the service position

access the control unit and display module for service

or with either pin removed.

2.3 Control Unit Checkout Procedure

Control

Figure 2-2 Control Panel

Bed Controls

Model Patient Number Temperature Temperature Power % Time Display

Heater

Elapsed

Light On/Off Lights* Silence Switch* Decrease Switch

2-4

Alarm Alarm Mode

Mode Indicators

Note: Servo mode indicator, mode switch, and probe failure international control panel. Bed

WARNING: Do not perform the Checkout Procedures (Mechanical and Control Unit) while a patient occupies the warmer.

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Increase

raise/lower

are only present on elevating models.

Apgar Indicator

alarm

Apgar Tones

On/Off

are not present on the model 2001

Elapsed Time Start/Hold and Reset

Page 19

2/Setup

and Checkout Procedures

A. Control Unit Check

Connect the warmer power cord to an appropriate power source. Refer to the rating plate on the Warmer for the proper voltage needed. Switch the power On and verify the following on the Control

Panel (Figure 2-l): a.

The alternating two tone audible alarm sounds and all displays and indicators are lit for approximately two seconds.

Note:

During this time the controller also performs self check

functions. If the controller detects a failure, the alarm stays on

and service is required.

Note:

All alarms except system failure or power failure are pre-

ceded by a 30 second intermittent operator prompt tone.

The manual mode indicator is lit.

Operator prompt tones sound and the % power display flashes.

Adjust the heat output with the increase (A) and decrease

switches to attain the high and low limits as indicated by the %

power display.

(v)

touch

Note: Steps 3 through 8 do not apply to the model 2001 International.

Connect the skin temperature probe to the warmer.

Press the mode touch switch to place the warmer in the servo mode and verify the following:

Note:

An alternating two tone alarm, a flashing overhead alarm light and the patient temperature display flashing if the skin temperature probe is below 30°C. Warm the probe with

your fingers or silence the alarm.

The servo mode indicator is lit.

An operator prompt tone sounds and the control temperature

display flashes

Press the increase (A) touch switch and verify that the maximum

servo control temperature attainable is

Note:

the patient temperature and the control temperature is greater than person).

Press the decrease touch switch and verify that the minimum servo control temperature attainable is

A patient temperature alarm occurs if the difference between 1°C (the difference can be adjusted to

36.5”C.

0.5”C

35.O”C.

“LL.L”

may occur here

37.5”C.

by a qualified service

Disconnect the skin temperature probe. Verify the following:

The probe failure indicator light is lit.

There is an alternating two tone alarm.

The overhead alarm light is flashing.

The patient temperature display flashes

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“HH.H”.

2-5

Page 20

2/Setup

and Checkout Procedures

Press the alarm silence touch switch and verify the following:

The probe failure indicator light is lit.

The alternating two tone alarm is silenced.

The overhead alarm light is lit.

The patient temperature display indicates

After one minute, the alternating two tone alarm sounds, the

overhead alarm flashes and the patient temperature display

flashes

Switch to the manual mode and set the heat at 25% power.

Elapsed Timer Check

Press the Start/Hold touch switch to activate the elapsed timer.

1. Verify that the timer starts operating.

2.3.Press the Apgar tones On/Off touch switch for the Apgar tones.

Verify that the indicator light for the Apgar tones is extinguished. Press the Apgar tones On/Off switch for the Apgar tones again.

Verify that the indicator light for the Apgar tones is lit.

Press the Start/Hold touch switch. Verify that the present elapsed time is held.

Press the Start/Hold touch switch and verify that the timer updates

to the current elapsed time and the Apgar tones continue to sound at the specified times (at 1 minute and at every 5 minute interval after the elapsed timer has started).

“HH.H”.

Press the Reset touch switch and verify that the timer indicates

“0O:OO”.

minutes, the display switches off.

If the elapsed timer is not used for approximately two

C. Observation Light Check

Press the Light On/Off touch switch. Verify that the observation light

functions.

D. Raise and Lower Bed Switch Check

(Elevating Models Only)

CAUTION:

limit positions; equipment damage may result.

Press the Raise Bed touch switch and verify that the bed raises to a maximum of 46

Press the Lower Bed touch switch and verify that the bed lowers to a minimum of 38

Do not continue to run the motor at the upper and lower

l/2

inches (118 cm) off the floor.

l/2

inches (98 cm) off the floor.

2-6

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2/Setup

and Checkout Procedures

E. Interlock Switch Check

Place the warmer in the manual mode at 25 % power output.

Rotate the heater assembly to the side. Verify that the heat off indicator light is On and the % power display indicates 0% heat.

Rotate the heater assembly to the normal operating position. Verify that the heat off indicator light is Off and the % power display indi-

cates 25%.

F. Power Failure, Memory and Battery Test

(all models except the 2001 International)

Operate the unit in the manual mode with the heat set in the “pre-

heat” range for a minimum of one hour to charge the battery.

Note:

The battery must be fully charged to pass the 10 minutes test or partially charged to pass the two minute test. If the battery is defective, replace it. Refer to the service manual. There is no main- tenance required for the battery. The battery has a two year replace- ment schedule.

Disconnect the patient temperature probe.

Place the warmer in the servo mode.

Silence the probe failure alarm.

Set the control temperature to

Remove the Warmer power plug from the power source for two minutes. Do not switch the power Off. The power failure alarm

should sound for two minutes.

Note: If the power failure alarm is tested for 10 minutes, the warmer must be connected to the correct power source and operated for 24 hours to recharge the battery before allowing a patient to occupy the Warmer.

Note:

The power failure alarm will not operate if the circuit

breaker trips.

Reconnect the warmer to the power source. Verify the following: a.

The warmer is operating in the servo mode.

The control temperature is

The audio power failure alarm is off.

(Power Failure, Memory and Battery test for 2001 International model)

37.O”C.

Select 25% heater power.

Remove the warmer power plug from the power source for two minutes. Do not switch the power off. The power failure alarm should sound for two minutes.

Reconnect the warmer to the power source and verify the following:

The heater is operating at 25% power.

The audio power failure alarm is off.

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Page 22

In this section

Control Panel Operation 3-l

3.1 A.

Displays

Indicator Lights 3-2 C. Switches 3-2 D.

Alarms 3-4

Manual and Servo Mode Operation

3.2 Elapsed Timer Operation

3.3 Bassinet Operation (model 3500 only)

3.4 Bed Platform Operation 3-12

3.5 Side Panel Operation 3-13

3.6 X-ray Procedures 3-14

3.7

Oxygen Administration

3.8

Gas Cylinder Installation and Operation

3.9

3.10

Mounting Accessories 3-18 A. B.

ThermaLink

3.11

3.12

Rotating Drawer Option 3-22

3.1

Control Panel Operation

(Control Panel is shown in Figure 2-2)

3-7

3-l 1

3-l 6

3-16

Mounting and Releasing Procedure 3-19 Adapter Plate Mounting and Releasing Procedure ECMO Adapter 3-20

Option 3-20

3-19

A. Displays

l Patient Temperature

Control Temperature

% Power

Elapsed Time

Patient Temperature:

The patient temperature display indicates the temperature sensed at the

skin temperature probe tip. The skin temperature probe must be properly connected to the warmer and the infant for an accurate patient tempera- ture measurement. The range of temperature measurement is from 30.0 to

42.O”C, result in an result in an

with a resolution of

“HH.H” patient temperature display and below this range

“LL.L” patient temperature display

Control Temperature:

The control temperature display indicates the control temperature you select in the servo mode. The servo control temperature range is from

35.0 to manual mode.

37.5”C.

The control temperature display is not active in the

O.l”C.

Temperatures above this range

(all models except the 2001 International)

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% Power:

The % power display indicates the percentage of maximum power that is being supplied to the radiant heater in 5% increments.

The preheat range (0 to 25% power) allows operation without the 12 minute check patient alarm in the manual mode.

Elapsed Time:

The elapsed time display indicates elapsed time in minutes and seconds

up to a maximum of 60 minutes.

B. Indicator Lights

Servo Mode Indicator

Manual Mode Indicator

Apgar Tones Indicator

Servo Mode Indicator:

The servo mode indicator lights when the warmer is in the servo mode of operation. For proper operation of the warmer in the Servo Mode see section 3.2.

Manual Mode Indicator:

The manual mode indicator lights when the warmer is in the manual mode of operation. For proper operation of the warmer in the Manual

Mode see section 3.2.

WARNING: Use the servo mode unless the manual mode is specifically prescribed. While both modes require patient monitoring, the manual mode requires constant attention. In the manual mode, you must take the responsibility for detecting changes in the environment (drafts, direct sunlight, phototherapy lamp usage, etc.) or the patient condition requiring heater adjustments in response to these changes. In the servo mode, the warmer automatically adjusts heater output to main- tain the desired skin temperature, reducing (but not eliminating) the need to monitor the patient and make adjustments to the equipment.

(all models except the 2001 International)

Apgar Tones Indicator:

The Apgar tones indicator lights when the Apgar tones are activated, and the Apgar timer is running.

3-2

C. Switches

Mode Switch

Increase (

Alarm Silence

Start/Hold

Reset

Apgar Tones On/Off

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A) and Decrease (‘ I) Switches

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Light On/Off

l Raise bed (Elevating Models Only)

Lower bed (Elevating Models Only)

Mode Switch:

This switch is used to select either the Manual or Servo mode of opera- tion. An audio tone sounds momentarily when the mode switch is de- pressed.

Increase (A) and Decrease

These switches are used to set the radiant power level manual mode and to set the control temperature in the

(all models except the 2001 international)

(7)

Switches:

(% power) in the servo mode.

Alarm Silence:

This switch is used to silence the audible alarm. It silences all alarms except the system failure alarm. Refer to Table 1

details on how long the audible alarms are silenced. Holding this switch depressed for five seconds or longer activates the

audible alarm and lights all the indicator lamps for testing purposes.

Warmer Alarms for

Start/Hold:

This switch activates the elapsed timer. Refer to the elapsed timer operation, Section 3.3, for a detailed explanation of its function.

Reset:

This switch is used to reset the elapsed timer to

“0O:OO”.

Apgar Tones On/Off:

This switch activates the Apgar tones. When the Apgar tones are acti- vated, a short alarm tone is sounded at one minute and every five minute interval after the elapsed timer is started.

Light On/Off:

WARNING Prolonged exposure to the light emitted by the observation lamp in this unit may harm the unprotected eyes of the infant. For safety, cover the infant’s eyes.

This switch activates the observation light located in the heater assembly.

Raise Bed

WARNING: Check for proper clearance above the Warmer and below

the

bed surface before raising or lowering the bed.

WARNING: Inspect all patient connected tubes or wires before and

after moving or tilting the bed. Tilting or moving the warmer bed up or down can pull on tubing or leads connected to the patient. This may disconnect tubes or leads, restrict gas or liquid flow, or move sensors out of position.

(Elevating Models Only)

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3/Operation

Figure 3-1

On/Off Power Switch

with built-in circuit breaker

CAUTION: Do not continue to run the motor at the upper and lower

limit positions; equipment damage may result.

This switch raises the bed to a maximum height of 46

from the floor.

l/z

(118 cm) inches

Lower Bed (Elevating Models Only)

l/2

This switch lowers the bed to a minimum height of 38

from the floor.

(98 cm) inches

On/Off Power Switch and Circuit Breaker:

(See Figure 3-l.)

The On/Off power switch is located on the left side of the controller assem- bly (as viewed from the front) near the power cord socket. It is used for

switching the power to the breaker and limits the maximum current drawn by the unit. If this circuit breaker trips when the warmer is operating, the power switch is deacti- vated to the Off position. To reset the circuit breaker, return the power

switch to the On position. If the circuit breaker trips again, service is required.

warmer(On

On/Off Switch (I-On, O-Off)

and Off). The switch is also a circuit

3-4

D. Alarms

All alarms except system failure and power failure are preceded by a 30

second intermittent operator prompt tone.

Probe Failure Alarm

Patient Temperature Alarm

System Failure Alarm

Heat Off Alarm

Check Patient Alarm

Power Failure Alarm

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Probe Failure Alarm:

The probe failure alarm is only active in the servo mode of operation. The

alarm activates when the skin temperature probe fails electrically due to

an open or short circuit, or is disconnected from the Warmer. The heater

deactivates and the patient temperature display flashes

when this alarm condition exists.

“LL.L”

Patient Temperature Alarm:

tional)

The patient temperature alarm is only active in the servo mode of opera-

tion. The alarm activates when the difference between the patient

temperature and the control temperature is greater than 1°C. When the

patient temperature returns to within

this alarm is automatically reset.

Note:

If the patient temperature probe reads below 30°C or above 42°C in servo mode, the heater is deactivated and tively, appears in the patient temperature display.

Note:

Qualified service personnel can adjust the alarm to trigger at a difference of

WARNING: In the servo mode, verify that the patient temperature probe is securely attached to the patient at least once every half hour. A dislodged probe may not trigger an alarm. If the probe becomes dislodged, the warmer can over or under heat the infant.

and reset at a difference of

(all models except the 2001 international)

“HH.H” or

(all models except the 2001 interna-

0.8”C

of the control temperature,

“LL.L” or

0.3”C.0.5”C

“HH.H” respec-

WARNING: The skin temperature probe should be located on the patient’s skin in an area which is directly in the path of the radiant heat. It should not be attached to an area which is shielded from the radiant heat or between the patient and the mattress. Large tempera- ture gradients and very long servo response times will result from improper probe placement.

WARNING: Rectal temperatures must never be used to servo control a patient’s temperature.

System Failure Alarm:

The system failure alarm activates if the solid state relay controlling the radiant heater fails, if the microprocessor fails or if the calibration drifts by more than

with the alarm silence switch.

WARNING: Do not use the Warmer system if the system failure alarm

is activated. Remove the unit from service and refer to qualified personnel for repair.

0.3”C.

The alternating two tone alarm cannot be silenced

Heat Off Alarm:

When the heater is rotated to the side position, the heater is switched off

and the Heat Off indicator is switched on. The audible Heat Off alarm activates after 5 minutes if the heater is not returned to the normal

position. The alarm can be silenced by pressing the Alarm Silence switch.

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Check Patient Alarm:

Manual Mode: The check patient alarm activates in the manual mode

of operation when the heater has been energized at a power level greater than 25% for 12 minutes. The alternating single tone alarm is activated for this condition. Pressing the alarm silence switch silences this alarm and resets the timer for another 12 minutes of operation. If this alarm is not silenced within 3 minutes of the check patient alarm occurring, an alternating two tone alarm is sounded and the heater is deactivated until the alarm silence switch is pressed.

Servo Mode: The check patient alarm activates in the servo mode of operation if the heater has been at the 100% power level for 12 con- tinuous minutes. The alternating single tone alarm is activated for this alarm. Pressing the alarm silence switch silences this alarm and resets the timer for another 12 minutes of operation. If this alarm is not silenced within 3 minutes of the check patient alarm occurring, the alternating two tone alarm is sounded and the heater is deactivated until the alarm silence switch is pressed.

Power Failure Alarm:

A battery operated power failure alarm activates when the external power source fails or is accidentally disconnected. The battery also provides power to an electronic memory to recall previous control temperature settings for approximately 10 minutes, when the battery is fully charged.

Table 1

Alarm

Condition Alarm Sound

Probe

Warmer Alarms

Failure*

Patient Temperature is greater than

42’CS

Patient Temperature

2’C

more than

from

Control temperature* Patient Temperature

6of

Z°C

between 1 and Control temperature*

Patient Temperature

30°C

is less than System Failure* *

Heat Off Check Patient

Alternating Two-Tone t

Alternating Single-Tone t

Alternating Single Tone t

Alternating Two-Tone

silenced Alternating Single Tone t Alternating Single Tone t

after 12 minutes Alternating Two-Tone after 15 minutes

Alarm

Silence Period

minute

1 minute

minutes

minute

Cannot be

minutes

12 minutes 15 minutes

Heater

Off Off

Off

Off *

Off

Power Failure

Heater output is dependent on the Patient Temperature and Control Temperature settings in the servo mode, and the % Power setting in the manual mode.

Error code in elapsed time display indicates the cause of the

Preceded by a 30 second operator prompt tone.

* Not applicable to model 2001 International

Can be set to between

3-6

and 2°C by qualified service personnel.

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Cannot be silenced

Off

Page 28

3/Operation

Table

Warmer Error Codes

Error Codes:

In the event of a system failure, a nonsilenceable, high priority alarm sounds and the System failure LED illuminates. Before shutting off the Warmer and removing it from service, make note of the error code that appears in the elapsed time display. This code will aid qualified service personnel in diagnosing the problem. Table 2 lists the possible error codes, for a more detailed explanation of error codes see the Service manual.

EOOl E003 E005 EOlO E013 E015

E017

E025

Instruction Test Failure ADC Low Calibration Failure RAM Test Failure Line Voltage Out of Range Heater Not Switching Off

Software Upset Software Upset

Hardware Watchdog Circuit Tripped

RAM Inconsistency

Missing Routine

E002 E004 Checksum Failure E007 ADC Converter Failure E012 E014 E016 E019

ADC High Calibration Failure

Heater Not Switching On Alarm Oscillator Failure Safety Relay Not Opening Properly

Software Upset

3.2 Manual and Servo Mode Operation

WARNING: Before using the Ohmeda Infant Warmer System, read this entire manual. Attempting to use this device without a thorough understanding of its operation may result in patient or user injury. This device should only be operated by personnel trained in its opera- tion and under the direction of qualified medical personnel familiar with the benefits and risks of this type of device.

WARNING: Do not leave the patient unattended when using the Infant Warmer. Check the patient’s temperature periodically to ensure the comfort and the safety of the patient. If the warmer is used for an extended time, it is recommended that the servo mode of operation be used. When an alarm is silenced, close monitoring of the patient’s condition is required.

WARNING: Use of electrosurgical units or other electrical field radiat-

ing equipment can affect the operation of the Warmer. Keep the pa- tient probe lead as far away as possible from electrosurgical cables. Do not allow excess electrical cables to be laid on the bed platform. Use of electrosurgical units or other instruments which radiate electrical fields can cause indirect heating, by several tenths of a degree of the skin temperature probe due to absorbed electrical energy. When using

these devices near the radiant warmer, operate the Warmer in manual

mode for maximum safety.

WARNING: The use of phototherapy equipment may raise the patient’s temperature.

WARNING: Radiant warmers increase an infant’s insensible water

loss. Take appropriate measures to maintain the patient’s fluid balance

while caring for them in a radiant warmer.

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3/Operation

WARNING: Do not use the Warmer in the presence of flammable anes-

thetics; a possible explosion hazard exists under these conditions. WARNING: Radiant energy can adversely affect blood components. When

using intravenous tubing systems for delivery of blood components to patients occupying a warmer, shield any tubing with aluminum foil.

WARNING: When using a radiant warmer, change the patient’s diapers frequently. Radiant energy causes more rapid urine evaporation, and may lead to inaccurate urine diagnosis test analysis and inaccurate weight measurements.

WARNING Do not touch the protective grill under the radiant heater or the top of the heater assembly. These surfaces may be hot and a burn could result.

Connect the power cord to a properly grounded AC power source.

Place the power switch in the On position. During the first seconds of operation, the warmer performs a self check of the control system. The software is verified, calibration is checked and operation of the solid state relay controlling the heater is verified. All displays and indicators are lit and the audible alarm is sounded. If the self check detects a

failure, the alarm stays on and service is required.

Note:

Mode Operation in Step 5.

The Warmer begins operation in the Manual Mode, described in

Step 3. To operate the warmer in the Servo Mode, refer to the Servo

3. Manual Mode Operation.

WARNING: Use the servo mode unless the manual mode is specifi- cally prescribed. While both modes require patient monitoring, the manual mode requires constant attention. In the manual mode, you must take the responsibility for detecting changes in the environ- ment (drafts, direct sunlight, phototherapy lamp usage, etc.) or the patient condition requiring heater adjustments in response to these changes. In the servo mode, the warmer automatically adjusts heater output to maintain the desired skin temperature, reducing (but not eliminating) the need to monitor the patient and make adjustments to the equipment.

the

flashing

manual

In the manual mode of operation, an operator prompt tone of the % power display prompt you to select a level of radiant heat.

(v)

Use the increase (A) or decrease

5% increments. The % power display indicates the power level selected. You must select a % power level each time the mode.

When you select % power levels between 30 % and

alarm sounds after 12 minutes to remind you to monitor the patient temperature. After checking the patient, this alarm can be reset by pressing the alarm silence switch. This alarm recurs every 12 minutes

during operation in the manual mode. If the alarm silence switch is not pressed within 3 minutes of the check patient alarm, an alternating two tone alarm sounds and the heater is turned off.

touch switch to adjust the % power in

wanner

is switched to the

and

100%)

a check patient

3-8

The Warmer may be preheated using 0% to 25% power levels. The 12 minute check patient alarm is not activated within these power level

settings.

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The skin temperature probe may be used to monitor the patient’s

temperature in the manual mode but it does not control the radiant

heat energy level. See step 4 for skin temperature probe attachment.

Note:

A patient placed in any warmer will normally develop tempera- ture gradients with hotter and cooler areas. This is due to radiant heat being applied above the infant, the cooling effect from the mattress below the infant, the unequal skin cooling effect from evaporative water loss, unequal internal heat generation within the patient, and the environmental variables of room temperature, room air movement, incidental sunlight, etc.

Skin Temperature Probe Attachment.

WARMNG:

(Stock No. 0208-0697-700) and heat reflective patches (Stock No.

0203-1980-300, 0208-700, patient’s skin temperature. Use of other manufacturer’s probes may affect the accuracy of warmer operation and the electrical safety of the patient.

WARNING: The skin temperature probe should be located on the patient’s skin in an area which is directly in the path of the radiant heat. It should not be attached to an area which is shielded from the radiant heat or between the patient and the mattress. Large tem- perature gradients and very long servo response times will result from improper probe placement.

WARNING: Rectal temperatures must never be used to servo control a patient’s temperature.

The Ohmeda Patient probe lead is made from low mass wire that helps prevent probe detachment while reducing pulling on the neonate’s skin.

Place the metal side of the skin temperature probe on the skin over the liver area of the infant’s abdomen. Remove the paper protecting the hypoallergenic adhesive on the Heat Reflective Patch. Secure the

skin temperature probe to the patient’s skin with the adhesive side

of the patch (Figure 3-2). Do not remove the heat reflecting foil which must be facing up.

Use only the Reusable Ohmeda skin temperature probe

5O/pkg)

lO/pkg;

or the disposable probe (Stock No. 6600-

Stock No. 6600-0196-700.

50/pkg)

to monitor the

Note:

or tightening the jack may break the electrical connector. See Figure 3-3.

If the patient is prone, place the skin temperature probe on the back, where it will not be against the mattress. If the probe is between the patient and the mattress, it will produce false readings.

WARNING: Intimate contact between the skin temperature probe

tip and the patient’s skin must be maintained for accurate skin temperature measurement. Underheating or overheating may

result from poor contact between the skin temperature probe and

the patient. Verify that the skin temperature probe is securely attached to the patient at least once every half hour.

6600-0194-000

The probe jack is attached at a specific torque value. Loosening

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Connect the skin temperature probe to the Warmer by plugging the

probe connector into the left side of the display module as viewed from the front. (See Figure 3-3.)

Figure 3-2

Skin Temperature

Probe attachment

CAUTION: Always remove the probe from the patient by grasping and removing the heat reflective patch first, then remove the probe from the patient or the patch. Always remove the probe from the Warmer by grasping the plug at the panel. Placing excessive strain on the skin temperature probe lead can damage the probe.

Heat Reflecting Patch with Foil Side Facing Up

White Paper Protector

Patient Probe (Place the metal side in contact with the infant’s skin)

Figure 3-3 Temperature Probe connection to the Display Module

Note: Avoid placing excessive strain on the skin temperature probe lead. Always remove the probe by grasping the plug at the panel. Do not pull on the probe lead.

Servo Mode Operation. (all models except the 2001 International)

Note:

The skin temperature probe must be properly attached before

starting servo mode operation. Refer to step 4. You must select a servo control temperature setting when the

Warmer is used in the servo mode for the first time. You are prompted to make this setting with an operator prompt tone and the flashing of the control temperature display.

3-10

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The servo control temperature is adjusted by pressing the increase (

) or the decrease

be adjusted from 35 to

sensed by the skin temperature probe is used by the control system to modulate the radiant heat and maintain the patient’s skin tem- perature at the selected control temperature. The Appendix details the Servo Control Mode Algorithm.

Note:

The Warmer cannot differentiate between an increase in core temperature with cold skin (fever), and low core and skin tempera- ture (hypo-thermia). Patient temperature should be verified with an

ancillary thermometer.

(v)

touch switches. The control temperature can

37.5”C.

In the servo mode, the temperature

WARNING: In the servo mode, verify that the patient temperature probe is securely attached to the patient at least every half hour. A dislodged probe does not always trigger an alarm. If the probe becomes dislodged, the warmer can over or under heat the infant.

Note:

A patient placed in any warmer will normally develop tempera- ture gradients with hotter and cooler areas. This is due to radiant heat being applied above the infant, the unequal skin cooling effect from evaporative water loss, unequal heat generation within the patient, and the environmental variables of room temperature, room air movement, incidental sunlight, etc.

WARMNC: The use of phototherapy equipment may raise the patient’s temperature.

3.3 Elapsed Timer Operation

Press the Start/Hold touch switch to activate the elapsed timer. The Apgar indicator light is illuminated when the Apgar tones are

enabled. Press the Apgar Tones On/Off touch switch to enable or cancel the Apgar tones.

Press the Start/Hold touch switch to hold the present elapsed time

when the timer is running. The Apgar tones, if enabled, continue to

sound at the specified times (after 1 minute and at every 5 minute

interval after the elapsed timer is started).

3.4 Bassinet Operation (model 3500

Press the Start/Hold touch switch to update the timer to the current

elapsed time.

Press the reset touch switch to start the timer over at

elapsed time display is blanked out when the elapsed time reaches 60 minutes.

o~y)

Note:

Lock the warmer’s two rear casters before unlocking or locking the

bassinet. The bassinet unit can be detached from the model 3500 warmer by

pulling up on the locking lever knob located at the top rear of the bassi- net. When the knob is pulled up, the locking pin is freed from its socket on the warmer alignment/locking track on the warmer base. The bassi- net can then be rolled forward away from the warmer.

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“0O:OO”.

The

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To return the bassinet to its locked position, align the bassinet with the warmer Continue pushing the bassinet until its locking pin drops into the socket at the end of the alignment/locking track. There should be an audible click when the pin drops into position. Lightly push and pull the bassinet

to verify that the two units are securely held together.

The bassinet’s front casters can be locked in position by pressing the

locking button on each caster.

3.5 Bed Platform Operation

(See Figure 3-4.) On large and small bed units, the bed platform tilts for Trendelenburg

and Fowler positioning capabilities. Lift or push down on the tilt handle to position the bed.

Push the bassinet over the warmer’s alignment/locking track.

Figure 3-4 Bed platform operation

WARNING: Inspect all patient connected tubes or wires before and

Note:

Tilting the bed mattress can affect the operation and performance

of the radiant warmer. The model 3500 bassinet bed platform also tilts for Trendelenburg and

Fowler positioning. To raise the front of the bed platform, pull the handle out and lift the bed. Release the handle so it engages in the upper detent. To lower the front of the bed platform, pull the handle out and lower the bed. Release the handle so it engages in the lower detent.

3-12

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3.6 Side Panel Operation

(See Figure 3-5.)

Figure 3-5 Side Panel operation

WARNING Do not leave the patient unattended when the side panels are lowered.

WARNING: Do not move the warmer by pushing or pulling on the bedside panels. This action may lead to the deterioration and breakage of the components which form a safety barrier around the infant.

WARNING: Ensure that the bedside panels are locked in position when a patient occupies the bed. Blankets or other foreign objects may prevent the latches from fully engaging.

To lower a side panel, pull it up and then pull the top edge away from the bed. On the model 3500 bassinet, the side panel locking mechanism must first be unlocked.

To raise a side panel, swing it to the upright position; then allow it to engage in the latched position.

To remove a side panel, lower the side panel, press the end pins in and

lift the side panel out.

To replace a side panel, hold the end pins in, place the side panel in

position and release the end pins.

Push pins in to install or remove side panels.

The Tubing Organizer Rear Side Panel aids in routing tubing to patients receiving therapy in warmer beds. The various size holes in the panel can accommodate large diameter tubes, such as aerosol tubes or the fiber optic cable of a ventilator or I.V. tubes. See Figure 3-6.

WARNING: Install tubing in the appropriately sized holes. Use of inappropriate holes may cause kinking, pinching or restriction of flow through the tubes, and may interfere with the proper operation of therapy equipment.

WARNING: Do not install chest drainage tubes in the Tubing Orga- nizer Rear Side Panel.

6600-0194-000

BiliBlanketTM

l/09/93

System; or smaller diameter tubes, such as

3-13

Page 35

3/0peration

Figure 3-6 Tubing organizer panel

Tubes up to 9 mm O.D.

Tubes up to Tubes up to

13 mm O.D.

WARNING: Inspect all patient connected tubes or wires before and after moving or tilting the bed. Tilting or moving the warmer bed up or down can pull on tubing or leads connected to the patient. This may disconnect

tubes or leads, restrict gas or liquid flow, or move sensors out of position. WARNING: Do not lower the Tubing Organizer Rear Side Panel with

tubing attached. Lowering can pull on the tubing, causing the tubes to dislodge from the patient.

WARNING using intravenous tubing systems for delivery of blood components to patients occupying a warmer, shield any tubing with aluminum foil.

Radiant energy can adversely affect blood components. When

21 mm O.D.

Using the side be lowered. Install the tubing organizer side panel on the back of the bed platform (the side nearest the aluminum uprights) to maintain easy access to the infant.

The tubing organizer side panel should be inspected, visually and by touch, for sharp edges, cracks or crazing, before each use.

3.7 X-ray Procedures

(See Figure 3-7 and 3-8)

The X-ray cassette may be placed in the slot under the bed platform or in

the X-ray cassette tray if installed.

The heater housing rotates to the left for X-ray procedures.

housing in the X-ray position rotate the heater to the left. vated when in the X-ray position and the heat off indicator is illuminated. audible alarm is activated after 5 minutes (in the manual mode) if the heater housing is not returned to the normal position. The alarm may be silenced for 5 minutes by pressing the

Note: The normal servo temperature alarms and alarm silence periods are in effect in the servo mode of operation. The 5 minute heat off alarm silence period is overridden by the normal servo temperature alarms. The heater is deactivated in the X-ray position. Rotate the heater hous- ing to the normal position to resume normal operation.

as a tubing organizer restricts the panel’s ability to

panel

To place the heater

The heater is deacti-

alarm

silence switch.

The

3-14

Fi9ure

The X-ray cassette tray (see warmers (except model 3500) facilitates X-ray procedures occupy the warmer bed. An X-ray cassette can be placed on the tray and slid into the cavity beneath the bed without disturbing the patient. The tray can also be used as a writing surface or as work space during procedures, provided that a

maxhnum

6600-0194-000

load limit of 5 lbs is not exceeded.

11/09/93

3-8) used with all large and small bed

while

patients

Page 36

3/0peration

Figure 3-7 Heater Rotation for X-ray Procedures

Using the tray

Figure 3-8 X-ray tray operation

WARNING: Limit the load placed on X-ray tray 5 lbs. (2.3 Kg) to avoid a tipping hazard.

WARNING: Never place an infant on the X-ray cassette tray.

To help position the X-ray cassette, the tray has detents or stops at its center position and at normal extension. Gently pull the tray out allowing gravity to engage the stops. Since the tray removes easily for cleaning, use caution when pulling it out, and properly support the tray and any X-ray cassette. The tray can be pulled out on either

side of the warmer bed.

To further aid in positioning the X-ray cassette, a location grid pat- tern is molded into the tray itself. The tray grid markings correspond to the decal grid markings on the warmer bed side panels. Using the

markings on the side panels as a reference to the infant’s location,

position the cassette on the tray so that, when the tray is fully

inserted, the cassette will be directly beneath the infant.

With a smooth continuous motion, slide the tray back under the

warmer bed until you feel the “click” when the stops on the slides

engage the tray at the fully inserted center position.

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Rotate the heater housing out of the way, position the X-ray machine

and take the X-ray.

WARNING: Do not place any foreign objects on the warmer bed or in the under bed cavity while performing X-ray procedures. Incom- patible materials in the path of the X-ray may adversely affect the quality of the X-ray image. Use of mattress or bedding materials other than those supplied by Ohmeda should be evaluated by a

Neonatologist or Radiologist.

The tray can be removed for cleaning by simply sliding it all the way out of the slides. The tray should be cleaned between patients according to the hospital protocol recommended cleaning agents.

3.8 Oxygen Administration

WARNING: Oxygen concentrations higher than 40% can increase the risk of retrolental fibroplasia (retinopathy of prematurity). It is prob- able that even concentrations of 40% or less oxygen (formerly consid- ered safe) could be dangerous to some infants. Therefore, arterial blood gas measurements are extremely important for regulation of the concentration of inspired oxygen when an oxygen-enriched environ- ment is considered necessary. (See current edition of “Standards and Recommendations for Hospital Care of Newborn Infants” prepared by the Committee of Fetus and Newborn of the Academy of Pediatrics.)

Oxygen can be administered from a regulated pipeline source or from auxiliary oxygen tanks mounted on the Warmer.

Refer to section 4.1 for a list of

3.9 Gas Cylinder Installation and Operation

(See Figure 3-9)

size pin indexed gas cylinders only.

“E”

Strainer Nipple and Safety Index Pin

cylinder gasket

Cylinder Wrench

Figure 3-9

Gas cylinder installation

Make sure safety index pins are engaged before closing yoke gate.

Use E size gas cylinders. Make sure cylinder valve dust cap is removed.

Note:

Cylinder Val

Use Discontinue therapy while replacing cylinders.

Open cylinder

3-16

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6600-0152-400

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Cylinder Removal:

Close the valve on the cylinder to be removed.

While supporting the cylinder, back out the Tee handle until the tip of the screw is flush with the inside surface of the gate.

Swing the gate open in a counter clockwise direction.

Remove the old cylinder.

Remove the old gasket from the yoke strainer nipple and discard.

Cylinder Installation:

Install a new gasket (Ohmeda Stock No. 6600-0152-400) on the

strainer nipple.

CAUTION: Use only one cylinder gasket per yoke. Use of more than one gasket could cause leakage of the cylinder gas.

Before installing a cylinder:

Remove the cylinder dust cap, if present.

Briefly open then immediately close the cylinder valve to blow any foreign matter out of the valve outlet. Do not use excessive force on the shut off valve.

Install the cylinder valve over the strainer nipple, making sure that the safety index pins are engaged.

Swing the gate closed in a clockwise direction and tighten the Tee Handle sufficiently (by hand only) to hold the cylinder firmly in place. Do not use wrenches or any other tool on the Tee Handle screws.

If only one oxygen cylinder is used, a yoke plug (Ohmeda Stock No.

6600-0399-500) and a gasket are required to seal the unused yoke cylinder port.

CAUTION: Yoke check valves are not intended to provide a leak free seal; always use a yoke plug and a fresh cylinder gasket to seal an unused cylinder port.

Open cylinder valve S-L-O-W-L-Y, and rotate until it is fully open.

CAUTION: Open cylinder valves S-L-O-W-L-Y to avoid damaging

the regulators.

Leak Testing the System:

Prior to initial use and as prescribed by hospital protocol, the yoke system(s) should be checked for leaks according to the following proce- dure:

Discontinue use of the system to be tested.

Disconnect all pipeline gas supply and outlet lines from the yoke

assembly.

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3/0peration

Use new gaskets and full cylinders at each cylinder port (optionally, one full cylinder and a yoke plug may be used on a 2 cylinder oxygen manifold)

Open a cylinder valve at each manifold to charge the manifold(s) to a minimum of 745 psig (5137

Note the gauge pressure reading in the manifold(s).

After one minute, check the gauge pressure reading(s) again. The pressure gauge needle should not drop visually. If there is a visual pressure drop, discontinue use of the gas system and have the yoke assembly repaired by a qualified service person.

Using Two Cylinders as an Oxygen Supply:

When two cylinders are installed to provide an oxygen supply, a check valve permits replacement of one depleted cylinder while the other continues to furnish oxygen. Leave the valve on the new cylinder closed until the old cylinder requires replacement, then open the valve on the new cylinder and immediately replace the old cylinder as described above. This assures that a full back-up cylinder is always available for use.

kPa)

and then close the valve(s).

3.10 Mounting

both

WARNING: Leaving will allow simultaneous depletion of oxygen supply available.

Use of Pipeline Air and Oxygen Supplies:

Connect pipeline supply(s) to the appropriate pipeline inlet(s).

Connect

Ensure correct operation of the secondary pipeline equipment.

When pipeline air or oxygen supplies are used, install cylinders as de- scribed above to provide an emergency gas supply in the event of a pipeline failure. Cylinder valves should remain closed until and unless the emergency gas supply is needed.

WARNING is in use. Pressures from if simultaneously used, cylinder supplies may be depleted, leaving no reserve supply in case of pipeline failure.

desired equipment to the appropriate outlet(s).

Do not leave gas cylinder valves open if

oxygen cylinder valves open at the same time

with

both

cylinders

both

oxygen supplies may become equal, and

no reserve

the

pipeline supply

Accessories

(See Figure 3-10)

3-18

the

WARNING: Limit side on mounted more and 3500, limit tbe load of accessories to 20 pounds (9 kg) maximum per side mounted no more

WARNING: Due to installed, a tipping hazard may exist. Limit 50 lbs. (23 kg), no more than 25 lbs. (11 kg) per side.

6600-0194-000

the

Warmer to ensure stability. Accessories should not be

11/09/93

load of

than

56 inches (142 cm) above tbe floor. For models 3000

than

the

increased height of units

accessories to 50 pounds (23 kg) per

inches

(112 cm) above tbe floor.

the

ECMO option

with

the

total accessory load to

Page 40

3/0peration

Figure 3-10 Mounting rail system components

Rail system components mount to the uprights and provide ready access to commonly used equipment such as suction regulators, flowmeters, collection bottles, etc.

Loosen mounting screw and place mounting block in position.

Tighten mounting screw.

A. Mounting and Releasing Procedure

(See Figure 3-10)

Loosen the mounting screw on the mounting block.

Place the mounting block in position on the rail.

Tighten the mounting screw.

Release the rail system component by loosening the mounting screw.

B. Adapter Plate Mounting and Releasing

Procedure

(See Figure 3-11)

Universal Adapter plate allows Vacuum/Collection bottle slides and Bird blender bracket to mount to the rail system.

Loosen the two mounting screws on the side of the adapter plate with the hex key provided with the plate.

Place the adapter plate in position on the rail.

Tighten the two mounting screws.

Release the adapter plate by loosening the mounting screws.

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3-19

Page 41

3/Operation

Figure 3-11 Mounting the Adapter Plate

Tighten mounting screws.

the

C. ECMO Adapter

The ECMO adapter raises the bed an additional six inches to facilitate Extra-Corporeal Membrane Oxygeneration procedures on model 4400 and 5000 units.

with

WARNING: Due to tbe increased height of units installed, a tipping hazard may exist. Limit the total accessory load to 50 lbs. (23 kg), no more than 25 lbs. (11 kg) per side.

the ECMO option

3.11

Figure 3-12 ThermaLink (rear view of warmer)

3-20

ThermaLink Option

connector

6600-0194-000

11109/93

ThermaLink Connector

Page 42

3/0peration

ThermaLink Serial data and Nurse Call connections are options

The offered with the Warmer (units with version 5.0 software or higher) Your unit has this option if there is a nine pin connector on the back left side of the controller cover. See Figure 3-12.

Using the Serial Data interface

WARNING: Remote monitoring does not replace tbe need for direct

patient observation by qualified medical personnel.

The serial data output can be used with a computer or a commercial 232 monitor. Because of the wide variety of applications and systems, detailed information on decoding the data stream appears in the appen-

dix. For details of the RS-232 protocol and connector pin out, refer to the

Specification section.

WARNING: The computer or RS-232 monitor’s user program must continuously check tbe data link. The program should constantly verify connection to tbe warmer controller and check for updated data.

RS-

Using the Nurse Call System interface

WARNING: Remote monitoring does not replace tbe need for direct patient observation by qualified medical personnel.

the

WARNING: If you connect uses a normally open connection, a disconnected Nurse Call cable will

not trigger an alarm.

The Nurse Call connector lets you use the Warmer with your current

remote alarm system. Nurse Call alarms trigger for:

Nurse Call output to a system which

Probe Failure Alarms

Patient Temperature Alarms

System Failure Alarms

Heat Off Alarms

Check Patient Alarms

Power Failure Alarms

The Nurse Call alarms work with the warmer audible alarm. Silencing the audible alarm on the warmer stops the Nurse Call alarm even if the alarm condition still exists. At the end of the silence period, the Nurse Call alarm and the audible alarm reactivate unless the condition has been resolved. The alarm silence period ends prematurely if another alarm

triggers.

Refer to the Appendix for additional information on Nurse Call

connections.

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3-21

Page 43

3/0peration

Nurse Call checkout

Complete the checkout procedure in section 2.3.

Verify proper operation of the Nurse Call station.

Connect the Nurse Call connector to the warmer.

Unplug the warmer to trigger an alarm. Verify that you also get an

alarm at the Nurse Call station.

Note:

warmer, accidently unplugging the power cord, etc.) triggers a Nurse

Any interruption of warmer power (deliberately switching off the

Call alarm.

3.12 Rotating Drawer Option

The rotating drawer option allows access to the storage drawers from the front or from either side of the warmer. The drawer cabinet rotates by pushing on the side of the cabinet, stoping at 90” detent positions.

WARNING: Use caution when rotating the

Figure 3-13

Rotating Drawer

Package

drawers or possible injury. Always ensure tbe drawers are fully

closed before rotating

the

cabinet.

the

cabinet to avoid damage to

3-22

6600-0194-000

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Page 44

In this section

4.1 Cleaning

4.1

Cleaning 4-l

4.2

Wood Surfaces (model 3500

4.3

Reusable Skin Temperature

only) Probe

4-2

Figure 4-1 Disassembly for cleaning

WARNING: Disconnect power to tbe Warmer and allow tbe heat rod to cool before cleaning to avoid the possibility of a burn.

Clean the Warmer at least once a week or after each patient. Cleaning procedures for the Warmer and accessories are explained in the following sections.

cloth

CAUTION: Use tbe cleaning solution sparingly on a

the

ing damage to internal components.

warmer. Do not saturate tbe unit

Unplug the power cord.

Clean the exterior of the warmer using mild detergent solution applied with a damp cloth or sponge. Aqueous solutions which are

U.S. Environmental Protection Agency approved hospital level disin-

fectants may be used.

Do not allow liquids to seep into the electrical housing.

excessive solution causes

when clean-

Side Panel

6600-0194-000

11/09/93

Foam Mattress

Front/Rear

Push end , pins in for *

installation

and removal.

4-l

Page 45

4Kleaning

and Disinfecting

The mattress, X-ray tray, bed, and side panels may be cleaned without immersing by using a disinfecting agent safe for use on the materials.

The following lists recommended cleaning solutions that may be

used safely.

Generic Formulation Hydrogen peroxide Sodium hypochlorite compound

Quaternary ammonium Iodophors Glutaraldehyde

CAUTION:

chemicals that are not listed above (i.e. alcohol, acetone, etc.), or chemicals in greater concentrations than damage the patient probe or other material being cleaned.

CAUTION: Do not autoclave or gas sterilize

4.2 Wood Surfaces

The wood surfaces are covered with a tough polymer coating which does not require waxing or special cleaners. Clean all wood surfaces with a

mild soap and warm water solution. Apply the cleaning solution with a clean cloth or sponge.

Use of cleaning/disinfecting solutions containing

(model 3500 only)

Max. concentration level 6%

0.5 % Aqueous Solution

0.2 % mg/liter

50 2%

those

listed above, may

the

mattress.

Dry the wood surfaces with a clean, soft cloth. Dust the wood surfaces with a clean, soft cloth which is free of abrasive

material.

4.3 Reusable Skin Temperature Probe

Clean the skin temperature probe by gently wiping with a soft, damp

cloth containing detergent or disinfecting solution. The table in section 4.1 (above) lists recommended cleaning solutions

that may be used safely.

CAUTION: Do not autoclave or gas sterilize tbe skin temperature probe. Do not immerse tbe probe in liquid cleaner. Avoid placing excessive strain on the probe lead. Always remove ing tbe plug at tbe panel. Do not pull on tions will help avoid damage to

Note:

Disposable skin temperature probes cannot be cleaned.

the

probe.

the

probe by grasp-

the

probe lead. These precau-

4-2

6600-0194-000

11/09/93

Page 46

In this section

Temperature Conversion Chart A-l Servo Mode Algorithm A-2 Infant Warmer System Specifications A-2

Electrical A-2

Controller A-3 Alarms A-4 Environmental Specification A-5 Electromagnetic Compatibility (EMC) A-6 Mechanical (Without Accessories) A-6 3500 Bassinet A-7 Accessories A-8 Radiant Energy Distribution A-l 0

Thermalink Option Specifications A-10

Serial data A-10

Nurse Call specifications A-l 2

Installing wall mounted units A-13

Pre-Installation Preparation A-13 Warmer Installation A-14

All specifications are subject to change without notice.

Temperature Conversion Chart

20.0 68.0 34.5

21.5 70.7 35.0

22.0

22.5 72.5

23.0 73.4 35.3

23.5 74.3 35.4

24.0 75.2 35.5

24.5 76.1

25.0 77.0 35.7

25.5 77.9

26.0 78.8 35.9

26.5 79.7 36.0

27.0 80.6 36.1

27.5 81.5

28.0 82.4 36.3

28.5 83.3 36.4

29.0 84.2 36.5

29.5 85.1 36.6

30.0 86.0 36.7

30.5 86.9 36.8

31.0

31.5 88.7 37.0

32.0 89.6

32.5 90.5 37.2

33.0 91.4 37.3

33.5

34.0 93.2 37.5

71.6

87.8

92.3

35.1

35.2

35.6

35.8

36.2

36.9

37.1

37.4

94.1

95.0

95.2

95.4

95.7

95.9

96.1

96.3

96.4

96.6

96.8

97.0

97.2

97.3

97.5

97.7

97.9

98.1

98.2

98.4

98.6

98.8

99.0

99.1

99.3

99.5

37.6

37.7

37.8

37.9 100.2

38.0 100.4

38.1 100.6

38.2 100.8

38.3 100.9

38.4

38.5 101.3

38.6

38.7 101.7

38.8 101.8

38.9 102.0

39.0 102.2

39.5

40.0 104.0

40.5 104.9

41.0

41.5 106.7

42.0 107.6

42.5 108.5

43.0 109.4

43.5 110.3

44.0 111.2

44.5

45.0

99.7

99.9

100.0

101.1

101.5

103.1

105.8

112.1

113.0

6600-0194-000

06/31/94

A-l

Page 47

Appendix

Servo Mode Algorithm

The servo mode uses the difference between the servo mode control temperature and the patient skin temperature to determine the percent of heater power required:

Control Temp

0.45”C

0.44

0.29

0.24

0.19

0.14

0.09

0.04

-0.05

-0.10

-0.15

-0.20

I-0.25”C

Infant Warmer System Specifications

Patient Temp

to to

to to to to to to to to to

0.3O”C

0.25”C

0.2O”C

0.15”C O.lO”C

0.05”C

-0.04”C

-0.09”C

-0.14”C

-0.19”C

-0.24”C

Percent Heater Power

100

95 90 85

75 65 45 25 20

5 0

Electrical

Power Requirements:

120

220 230 V, 240

100 V, All models designed to conform to BSI 5724, IEC 601-1, UL544, CSA 22.2,

SEMKO and TUV requirements.

Heater Output:

All models:

540 watts

Average Energy at Mattress Level at maximum % power setting:

50/60

50/60 50/60

50/60

mw/cm’

Hz Model: Hz

Model: Hz Model: Hz Model:

Hz Model: 95 V

5% at maximum % power setting.

for Model 5000

220 230 240

115

f -

Series 4000.

lo%,

6.6

lo%,

3.7

lo%,

-6%,

lo%, lo%, 3.3 Amps.

8.2 Amps.

Amps.

3.4 Amps.

A-2

WARNINC:

mw/cm2

for Model 2001

Series 3000.

Recommended Bed Level:

(69+5

2 inches

Bed-to-heater spacing which differs from tbe specified 27 2 inches patient’s condition.

6600-0194-000

(69f5 cm) will result in incorrect operation and may affect tbe

06131f94

cm) from bottom of heater module.

Page 48

Appendix

Isolation voltage

For your convenience, on Model heater spacing is indicated by a label located on the right aluminum upright (as viewed from the front).

3000,310O

and 3500 the proper

bed-to-

Line Voltage Compensation:

Input line voltage is monitored and the heater drive is adjusted to com- pensate for variations in the line voltage. This ensures a stable heater output despite input line voltage fluctuations.

Circuit Breaker:

Rated Current: 7.5 A. Trip Point: 9.45 A Minimum. Type: Manual Resetting. Model: 2500 Vrms 60 Hz from the patient probe to the ac phase and neutral lines

for one minute.

WARNING: The patient probe is not isolated from earth ground. Any additional equipment used must comply with UL 544, CSA 22.2, IEC 601, and VDE 750.

Airpax Snapak.

with

tbe Ohmeda Infant Warmer System

Leakage current

Ground resistance

With ground wire open or connected and measured at an exposed metal surface, less than 100 microamperes on 100 V and 120 V units (200 microamperes on 220 V, 230 V and 240 V units).

Less than 0.1 ohms

IEC 601-l Specifications

Type of protection against electric shock: Degree of protection against electric shock: Mode of Operation: Protection against hazards of explosion: Protection against ingress of liquids:

Class 1 l Type B Continuous Not Protected Not Protected

Controller

Electronics:

Microprocessor-based control system. Self-test functions are performed at power up and during normal opera-

tion.

Power Control Method:

Proportional heat control with zero-voltage switching to minimize radi- ated and conducted

EMI.

Observation Light:

Nominal illuminance output: 100 foot candles at center of mattress. Estimated lamp life: 3,000 hours.

6600-0194-000

08/31/94

A-3

Page 49

Appendix

Temperature Sensing System:

Range: 30 Accuracy: Resolution: Probe interchangeability: Probe Model Number: LA003 or LA005

42°C

f0.3”C

+O.

“C

+O.

“C

Elapsed Timer:

60 minute elapsed timer with hold mode and Apgar tones. Manual Mode Heat Selector Range:

All models:

0 to 540 watts in 20 increments of 5% each.

Servo Mode Control Range:

(all models except the 2001 international)

35.0 to

37.5”C

in increments of

O.l”C.

Alarms

Multiple audio tones:

Operator prompt tone. * Alternating single tone. * Alternating two tone. *

*For a more detailed description of the audible alarms see section

Overhead Alarm Light:

Large alarm light located on the front of the heater assembly for easy

visual identification.

Probe Failure Alarm:

The alternating two tone alarm is active only in the servo mode.

Activates when the skin temperature probe:

Fails electrically due to an open or short circuit, or

Is disconnected from the Warmer.

Probe senses temperature outside the 30

3.1D

42°C range.

A-4

When this alarm condition exists:

The heater is turned off and

The patient temperature display flashes

“HH.H” or

“LL.L”.

Patient Temp. Alarm:

This single tone alarm activates in the servo mode when the difference

between the patient temperature and the control temperature is greater

than 1°C (can be adjusted to

Alarm cancels when the patient temperature returns to within

the control temperature.

6600-0194-000

08/31/94

0.5”C

by qualified service person).

0.8”C

Page 50

Appendix

System Failure Alarm:

This alternating, two tone alarm cannot be silenced. Alarm activates and turns the heater off if any of the following occurs:

The analog-to-digital converter calibration drifts by more than

The heater solid state relay fails.

The microprocessor fails or

The self check functions fail on power-up.

Note:

Excessive EM1 in the hospital environment can trigger the system failure alarm. Note the error code, if any, and switch off the unit. Wait ten seconds and switch the power back on. If the system fail alarm recurs, remove the warmer from use.

0.3”C.

Check Patient Alarm:

Manual Mode: Single tone alarm activates if the heater has been ener- gized at greater than 25% heat for 12 continuous minutes.

Servo mode: Alarm activates when the heater has been at full power for

12 continuous minutes.

Alternating two tone alarm activates after 3 minutes if the Check Patient

Alarm is not silenced.

Power Failure Alarm:

Single tone alarm activates if the line power is interrupted. No illuminate.

LEDs

A rechargeable maintenance-free nickel cadmium battery powers the audio alarm and the microprocessor for up to 10 minutes with a fully charged battery. If power is restored within 10 minutes, the mode of operation and the set point are recalled.

Heat Off Alarm:

The Light-Emitting-Diode (LED) indicator activates when the heater is in the side position.

The audio alarm activates after the heater has been in the side position

for 5 minutes.

Environmental Specifications

Operating Temperature Range: 10 to 40°C (50 to Transport and Storage Temperature Range: -25 to 60°C (-13 to Transport, Operating and Storage Pressure Range: 500 to 1060 Operating and Storage Relative Humidity Range: 0 to 95%.

104’F).

140°F).

kPa

6600-0194-000

08/31/94

A-5

Page 51

Appendix

Electromagnetic Compatibility (EMC)

All models meet the following standards:

C63.16-1991

ANSI

IEC 62A

Draft standard for Medical Electrical Equipment, EMC IEC 801-2 Electrostatic Discharge IEC 801-3 Radiated Susceptibility IEC 801-4 Conducted Fast Transient IEC 801-5 Conducted Surge Immunity IEC 801-6 Conducted Susceptibility

Electrostatic Discharge 25kV

Level 4

(3V/m)

Level 2

Level 3 Level 3 Level 3

CISPR 11 B Radiated or Conducted Emissions

Mechanical (Without Accessories)

Overall Dimensions:

Model number

2001 3000 3050

3100

3150 3300 3500t 4000 4300 4400 5000

Height in./cm

731185 73/185

11*/28 60*/152 60*/152 73/185 73/185 731185 73/185 72-80/183-203 72-80/183-203

Deptb in./cm

41/104 45/l

14 33/84 33/84

36191

41/104

40.5/103

52/

132

45/l

14 45/l

Width

in./cm 26/66 26166 18146

21.5155

21.5/55 26/66

24.5/62

30.5177

30.5177 32181

Minimum lbs/kg

210196

165/70

40118 75/34

110/50

210196

2281102

175/80

222/101

200191 210/96

Wt*

A-6

will

Height of equipment itself, height from floor

t Includes bassinet.

statmnary

**Drawers not included; for

drawers add 56 lbs (25 kg), for

vary on application.

Mattress dimensions:

Model number

2001 3000

3050 3100

3150 3300 3500

4000 4300

4400

5000

6600-0194-000

08/31/94

Width in./cm

18.2/46

23.2159

23.2/59

Length in./cm

25.2/64

29.2174

29.2/74

rotatmg

drawers add 70 lbs

(32

kg).

Page 52

Appendix

Casters

Model number

2001 3000 3050 3100 3150 3300 3500

4000 4300 4400

5000

”

(13 cm) dia., 2 locking,

”

(13 cm) dia., 2 locking,

2 non locking 2 non locking

- ”

(13 cm)

Warmer- 2

dia., 2 locking, ”

(5 cm) dia., 2

2 non locking

locking, 4 non locking

Bassinet- 5” (13 cm) dia., 2 locking, 2 non locking

5” (13 cm) dia, 2 locking, 2 non locking

”

(13 cm)

”

(13 cm)

”

(13 cm) dia., 2 locking,

dia., 2 locking, 2 non locking dia., 2 locking, 2 non locking

2 non locking

Drawers

Model

number 2001

3000 3050 3100 3150 3300

3500 4000

4300 4400

5000

Dimensionsforboththe

3 drawers- 15” x 15.5” x 4” (39 x 39 x 10 cm)

3 drawers- 15” x 15.5” x 4” (39 x 39 x 10 cm) 3 drawers- 15” x 15.5” x 4” (39 x 39 x 10 cm) 1 drawer- 12” x 15” x 3” (30 x 39 x 8 cm)

2drawers-12”

x15”x6”(30x39x15cm)

3 drawers- 15” x 15.5” x 4” (39 x 39 x 10 cm)

3 drawers- 15” x 15.5” x 4” (39 x 39 x 10 cm) 3 drawers- 15” x 15.5” x 4” (39 x 39 x 10 cm)

stationaryandrotating

drawerpackages

Bed duty cycle (Elevating models only)

20 seconds on 15 minutes off

Bed tilt positions

arethe

same

3500

8” in increments of 4”

All other

models

10” continuously adjustable

3500 Bassinet

Material:

Select oak and oak veneer. Optional custom stain colors are available.

Storage:

Three Drawer storage opening from either side or the front of the unit, depending on the model ordered.

6600-0194-000

oai3*/94

A-7

Page 53

Appendix

Accessories

Accessories include the following (see also Section G/Illustrated Parts ):

Air/Oxygen Yoke and Regulator:

Pin indexed oxygen yokes accommodate two E size oxygen cylinders. Additional yoke accommodates one E-size cylinder of compressed air. Air and oxygen pipeline fittings.

Regulators: 52

Cylinder pressure gauges: 0 to 3000 psig (0 to 20700

2 psig (358

kPa).

Oxygen Yoke and Regulator:

Pin indexed yokes accommodate two E size oxygen cylinders.

Oxygen pipeline fittings.

kPa).

Regulator: 52 Cylinder pressure gauge: 0 to 3000 psig (0 to 20700

2 psig (358

kPa).

Rail Mounted Accessories:

the

WARMNC:

Limit tbe load to 20 lbs. (9 kg) per instrument shelf, mounted to a

single upright, and 50 lbs. (23 kg) per monitor shelf, mounted between

the

uprights.

WARNING: Limit tbe load of accessories to 50 pounds (23 kg) per side on

the more 3500, limit side mounted no more

Overloading the shelves can affect

Warmer to ensure stability. Accessories should not be mounted

than

56 inches (142 cm) above the floor. For models 3000 and

the

load of accessories to 20 pounds (9 kg) maximum per

than

44 inches (112 cm) above tbe floor.

stability of the unit.

A-8

WARNINC:

installed, a tipping hazard may exist. Limit

50 lbs. (23 kg), no more

System Dimensions 12 x 26 inches (30 x 58 cm)

Load limit: System Dimensions 12 x 30.5 inches (30 x 77 cm)

Load Limit: 50 lbs (22 kg)

Instrument shelf: Dimensions 12 x 12 inches (30 x 30 cm)

Load limit: 20 lbs (

Oxygen flowmeter with DISS fittings: 0 to 15 LPM

Air flowmeter with DISS fittings: 0 to 15 LPM

6600-0194-000

Due to tbe increased height of units

than

25 lbs. (11 kg) per side.

2001/3000/3300

50 lbs (22 kg)

4000/5000

08/31/94

Monitor Shelf:

9kg)

the

total accessory load to

with

tbe ECMO option

Page 54

Appendix

+lOO

Airway Manometer: -20 to IV pole

l/8

Gas manifold with

3.5 (9 cm) inch utility post

inch NPT fitting

centimeters of water

Three Drawer Storage Accessory:

(for all models with beds Drawers 15 x 15.5 x 4 inches (38 x 39 x 10 cm) 930 cubic inches per drawer (14,820

WARNING:

Limit

Utility Post, 22 Inch (0217-5376-800)

1 inch (2.5 cm) diameter x 22 inch (56 cm) long post Provides a rigid vertical mounting space for stack mounting of equip-

ment. The post should be mounted as low as possible to ensure the stability of the Warmer.

Overloading the drawers can affect tbe stability of

the

load to 10 lbs. (4.6 kg) per drawer.

stationary or rotating)

cm3

per drawer)

the

unit.

with

Vacuum Manifold

Two DISS vacuum adapters are mounted on a standard manifold block. The locations of these adapters can be changed to any of the other tapped holes in the block to meet special requirements.

Vacuum Bottle Slide Bracket

The standard vacuum bottle slide can be mounted on either upright.

Ventilator Mounting Post

The vertical mounting post is a non-locking 1 inch diameter shaft which pivots in an 8.5 inch (22 cm) radius from the upright. One end of the shaft extends 14 inches (36 cm) while the other extends 6.5 inches (16 cm). Ventilators, humidifiers, blenders or other user hardware can be pivoted into optional position.

DISS Adapters

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A-9

Page 55

Appendix

Radiant Energy Distribution

This table lists typical average radiant energy distribution across the

patient bed surface for informational purposes only.

mW/cm2

Zone Mattress

Average Average

Model

Typical Radiant Energy Level on the Mattress Surface

2001

5000

and and

Series Series

3000 4000

units+ units

34 22

34 20

Thermalink Option

Serial data

RS-232 Connector

WARNING: The computer or RS-232 monitor’s

continuously check the data link. The program should constantly verify connection to the warmer controller and check for updated data.

Note:

until power is restored. The Nurse Call and the serial data output share the same female, nine

pin, d-type connector

Infant Zone

Mattress Mattress

Model

radiantenergylevelvahms

tThe

thanthose shown; units priortothose numbers

15” (38 cm) wide

2001/Series 5000/Series

3000 4000

hada

Watt

ofoldermodelswillbeless

withHCA

heater.

serial

Specifications

user program must

In the event of power failure, all serial communication will cease

(DBSF).

Cable requirements

A-10

Pin 2: Receive Data (warmer input) Pin 3: Transmit Data (warmer output)

Pin 5: Gnd (Signal Ground)

pF.

The user interface cable must have capacitance less than 1500

It should be a shielded cable such as a Belden 9611 with AMP shielding kit 748046-l and ferrule 747579-8.

6600-0194-000

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Page 56

Appendix

Data transmission

Data format

<stx>

IWxxxx

The warmer continuously sends data from the time that it is first pow-

ered up. Note that the warmer serial data transmission can be controlled through the serial port. Data output stops when the warmer receives a <cntrl>S

(XOFF) and resumes when it receives a

ccntrl>Q (XON).

1 start bit, 7 data bits (ASCII), 1 parity bit (odd), 1 stop bit, 1200 baud, full duplex.

Serial data has the format: start text character,

“IW”;

software version; data string; checksum characters; carriage

return,

“<cr>“;

line feed,

elements are separated by spaces,

“elf>“;

end of text character,

Each String contains 53 charac-

“__“.

“<stx>“; IWS header,

“<etx>“.

Data

ters:

Sample data:

Data for discussion (use the following table):

Start of text character (ASCII 2) or CTRL B; indicates a string of data will

follow. IW means the data is from the Infant Warmer; xxxx is the software

version in the unit, e.g. 0500 for version 5.00.

Pt.Pt

xx.xx

PPPPP

PC.PC

alrmleds

This is the patient temperature in degrees centigrade. The patient temperature will always be sent even if it is outside the normal display range. Temperatures less than or equal to

l.OO”C

indicate an open or a disconnected probe. Any temperature greater than or equal to 50°C is a shorted probe.

Reserved for future use. This is the mode of operation. P means servo control mode. A means

manual control mode. Always check the mode of operation before evaluating the patient control temperatures.

Percentage of nominal power defined as % of heater wattage.

In the servo control mode, this is the patient control temperature set with the

and

This series of bits represents the alarm

switches in degrees centigrade.

LEDs.

If an LED is illuminated, the corresponding bit is set to 1 (alarm active). If there is no alarm, the bit is set to 0. Checking the bits from right to left is the same as checking the alarm

LEDs

from top to bottom:

6600-0194-000

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A-11

Page 57

Appendix

code

Probe Failure Alarm Patient Temperature Alarm

System Failure Alarm

Heat Off Alarm Check Patient Alarm Reserved Power Failure Alarm Audible Alarm Status Bit

This

is the error code that appears in the control temperature display during a system failure alarm (e.g. E014). If the system is operating normally (no system failure), zeroes replace the error code (e.g.

This

the

two

byte ASCII representation of the byte that when added

the sum of all the ASCII data bytes in the string equals zero. Note that all over flows are dropped and the sum of the data bytes DOES NOT IN-

CLUDE the

bit of each byte.

cstx>,

checksum,

cetx>,

ccr>,

<If>

characters or the parity

EOOO).

<cr>

<If>

<etx>

Contact ratings

Connector

Table A- 1 Nurse Call signals

Carriage Line feed character. End of

return character.

transmission character (ASCII 3) or CTRL B.

Nurse Call specifications

Maximum

Maximum DC switching voltage: 100 Vdc

Maximum switching current: 0.25 A Maximum carrying current: 0.50 A.

The Nurse

female, nine pin, d-type connector

Pm 6:Closed contact under normal conditions, i.e. power on, no alarm

Pin 1: Pin 9:

These

resistive load: 4 VA

Call contacts and the serial data output share the same

(DBSF).

(recommended configuration) Common contact Open contact under normal conditions, power on, no alarm

contacts are not powered. They only provide closure.

A-12

Warmer Status

Normal Closed Alarm Power switch off Open

power fails

Nurse Call cable Open

disconnected

6600-0194-000

08/31/94

Nurse Call Signal

Pins

Open

l&6

Pins

Open Closed Closed

Open

l&9

Page 58

Appendix

the

WARNING: If you use disconnected Nurse Call cable DOES NOT trigger a remote alarm.

normally open Nurse call connection, a

Any interruption of

Note: warmer

Call alarm.

accidentally unplugging the power cord, etc.) triggers a Nurse

Installing wall mounted units

WARNING: Carefully follow do so may result in serious injury to

The model 3050, 3100, and 3150

for locations where permanent, infant radiant warmers attached directly

to the room wall are desired. To adequately install these models, pre-

planning at the architectural design phase is required.

The following

method of installation in new construction. Use only the Ohmeda hard- ware provided to mount the model 3050, 3100, and 3150. The installation

should be approved by the appropriate State and Local authorities. Deviation from these recommendations or attempts to retrofit existing construction should only be undertaken by professionals experienced in structural design, who in turn are wholly responsible for the structural integrity of the mounting method they devise.

instructions describe the manufacturer’s recommended

Pre-Installation Preparation

warmer power (deliberately switching off the

these

installation instructions. Failure to

the

operator or patient.

wall

mounted

warmers were designed

Figure A-l Wall cross section

Sheet Metal Screws

A pattern of

(1)

4” x

centers form the basic “rough in” for installing each IWS 3050 unit. See

Figure A-l. Verify that the studs and track are securely fastened to- gether at 12 inch intervals and to both the floor and ceiling tracks with #lO

sheet metal screws.

Track

11/2”

(10 x 4

two

(2) Extra Duty Drywall Studs (STE-20 gauge) and

cm)

Drywall Track (16 gauge)

16 inch (41

Ceiling Track

one

cm)

6600-0194-000

08/31/94

Floor Track

A-13

Page 59

Appendix

Warmer Installation

Figure A-2 Warmer mounitng overhead view

After the

install the warmer.

The distance from the

tress surface is critical for proper operation of the warmer. This distance must be 27 inches, or 3100, you must determine the bed surface height that will be used (for your convenience, a bed height label is provided to attach to the wall to aid in visually aligning the bassinet/bed surface).

wall is

Locate the stud edges by pre-measurement Find the

stud edge. See Figure A-2.

Remove the hinge bracket from the

(2) hinge pins (one on either side) that secure the bracket to the warmer heater head.

finished and the

warmer

2 inches

center of the drywall track

room is completed you are ready to

heater head

(69f5

cm). Before installing the model 3050

33/8

warmer by removing the

the bassinet

or by

inches (86 mm) over from the

bed

mat-

using a stud finder.

Mounting Anchors

Hinge Bracket

A-14

Note: For proper ventilation and access allow at least 4” clearance around

Utilizing

edge of the heater mounting bracket on the model 3050 and must be 27 tress that warmer already comes with 27

Use the hinge bracket as a template to mark the mounting

holes on the wall.

Use

through the dry wall and through metal drywall tracks behind the

6600-0194-000

a level, position the hinge bracket on the wall. The bottom

will

314

inch (19

08/31/94

the

heater assembly.

2 inches

be used. See

(69&5

mm)

diameter metal cutting hole saw to drill (4) holes

3100

cm), inches from the bed surface of the

F’i9ure

A-3.

The model 3150 integral bed

(6*5

2 inch

cm) bed-to-heater spacing.

waJl.

rnat-

Page 60

Appendix

Figure A-3 Heater to bed distance

“f2”

27 (69+5

WARNING: When installing wall mounted units, to achieve ad- equate structural strength all four holes must engage tracks. Should project engineer for

WARNING: Enclosing the heater assembly inside a cabinet may prevent proper ventilation and may create a fire hazard. If tbe heater is enclosed in a cabinet, it must be equipped with a power cut-off device that prevents operation while

cm)

the

hole saw miss a track do not proceed. Consult tbe

further

Hinge Bracket

direction.

the

cabinet is closed.

Heater Assembly

Place Bed Height Label Here

Perform steps A through C to secure the (4) in the wall. See Figure A-4.

_I__

Hold the metal channel the channel through the hole

one

With behind the wall. Slide the plastic cap along straps with the other hand until the flange of the cap

hand, hold the ring so the metal channel

flat

alongside the plastic straps and slide

the wall and track.

flush with the

Bed Surface

TogglerB

anchor bolts

wall.

rests

flush

Place your thumb between the straps, and push from side

snapping off the straps level with the flange of the cap.

6600-0194-000

08/31/94

side,

A-15

Page 61

Appendix

Figure A-4 Toggler@ installation

anchor

‘: .:

:’ .:

. .

Mount the hinge bracket on the wall with the flat washers, split ring washers and screws provided. See Figure A-5. Tighten the screws with approximately 80 lb/in of torque.

”

long) are for installations in

l/z

16 UNC, 2

(3/8

Note: The screws provided

5/8

l/2

inch or nesses of drywall, longer screws will be required. To properly mount the warmer,

Verify that the bracket is level and the distance to the bed surface is

27 inches,

WARNING: Keep hands clear of wall mounted heater assembly. A pinch hazard exists.

WARNING: Heater assembly weighs approximately 30 lbs (14 kg). Proper installation may require two people. Due to tbe 3100 and 3150 units, approximately 75 lbs (34 kg), proper installation will require two people.

Mount the warmer by inserting the back of the unit into the hinge bracket mounted on the wall, then securing it by tapping in the (2) hinge pins. Verify that the heater assembly is rigidly secured to the wall, is level, and is parallel to the floor.

For the model 3050, attach the “proper bed to heater spacing” label provided with the

is 29 inches (74 cm) from the lower edge of the hinge

inch thick drywall. For applications involving double thick-

l/2

at least 2

Z!Z

2 inches

screw threads must be engaged.

(69+5

unit to the wall so that the bottom line of the label

cm).

the

hinge area when installing a

the

weight of

bracket.

A-16

which

WARNINe

inches patient’s condition. For your convenience, a attachment

For the model 3100 or

3050 skip to step 15.

6600-0194-000

Bed-to-heater

(6*5

cm) will result in incorrect operation and may affect tbe

the

wall to identify tbe

08131194

spacing

315Operform

steps 10 through 14. For the model

differs from

the

proper bed-to-beater spacing.

label

has

the

specified

been provided for

27*

Page 62

Appendix

Figure A-5 Mounting the warmer

Hinge Bracket

3/4”

Dia. Hole

Flat Washer

Slit Ring Washer

Mounting Screw

Power Cord

Heater Assembly

Position the lower mounting bracket on the wall. Use the lower hinge

10.

bracket as a template to mark the mounting holes on the wall for the lower bracket.

Remove the warmer from the wall by tapping out the (2) hinge pins

11.

from the upper bracket. Remove the lower hinge bracket from the warmer by removing the

12. (2)

warmer.

13.

Repeat steps 5, 6 and 7 to properly install the lower mounting bracket.

Mount the warmer by inserting the back of the unit into the upper

14. hinge bracket mounted on the wall, then securing by tapping in the (2) hinge pins. Secure the warmer to the lower mounting bracket by

tapping in the (2) hinge pins. Verify that the heater assembly and

side rails are rigidly secured to the wall and that the heater is level and is parallel to the floor.

Refer to the Operation

15. dures.

WARNING; Perform Checkout Procedures before placing the unit in operation.

6600-0194-000

08/31/94

Maintenance Manual for checkout proce-

A-17

Ohmeda IWS 2001, IWS 3000, IWS 3050, IWS 3100, IWS 3150 Operation And Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual