Ohio Infant Warmer Systems All Models Operation and Maintenance Manual Nov 1993
Operation and Maintenance Manual
Ohio@ Infant Warmer Systems All Models I and Maintenance Manual
User Responsibility This Product will perform in conformity with the description thereof contained in this operating manual and accompanying labels and/or inserts, when assembled, operated, maintained and repaired in accordance with the instructions provided. This Product must be checked periodically. A defective Product should not be used. Parts that are broken, missing, plainly worn, distorted or contaminated should be replaced immediately. Should such repair or replacement become necessary, Ohmeda recommends that a telephone or written request for service advice be made to the nearest Ohmeda Regional Service Center. This Product or any of its parts should not be repaired other than in accordance with written instructions provided by Ohmeda and by Ohmeda trained personnel. The Product must not be altered without 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.
Model Descriptions v Definitions vii Precautions ix Warnings ix Cautions xiii
l/Description l-l 1.1
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
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) E. Warmer/Bassinet Unlock 2-3 F. Accessory Checks 2-3 G. Wall Mount Checkout 2-4
2.3 Control Unit Checkout Procedure 2-4 A. Control Unit Check 2-5 B. Elapsed Timer Check 2-6 Observation Light Check 2-6 C. Raise and Lower Bed Switch Check (Elevating Models D. Only) 2-6 E. Interlock Switch Check 2-7 F. Power Failure, Memory and Battery Test (all models except the 2001 International) 2-7
3-1 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
Elapsed Timer Operation 3-11
Table of Contents 3.4
Bassinet Operation (model 3500 only) 3-11
Bed Platform Operation 3-12
Side Panel Operation 3-13
X-ray Procedures 3-14
Oxygen Administration 3-16
Gas Cylinder Installation and Operation 3-16
3.10 Mounting Accessories 3-18 A. Mounting and Releasing Procedure 3-19 B. Adapter Plate Mounting and Releasing Procedure C. ECMO Adapter 3-20 3.11 ThermaLink Options 3-20 Using the Serial Data Interface 3-21 Using the Nurse CaII System Interface Nurse Call checkout 3-22
3.12 Rotating Drawer Option 3-22
4KXeaning and Disinfecting 4-1 4.1
Wood Surfaces (model 3500 only)
Reusable Skin Temperature Probe
Appendix A-l 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 Specifications A-5 Electromagnetic Compatibility (EMC) A-6 Mechanical (Without Accessories) A-6 3500 Bassinet A-7 Accessories A-8 Radiant Energy Distribution A-10 Thermalink Option Specifications A-10 Serial data A-10 Nurse CaII specifications A-12 Installing waII mounted units A-13 Pre-Installation Preparation A- 13 Warmer Installation A-14
2001 IWS (international)
Model Descriptions 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 (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 accommodate 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 procedures 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 postoperative 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 intended 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 Standard Heater/Bed
2000 3000 3500 Series Series Series
4000 5000 Series Series
Wall mounted, heater head only
Wall mounted heater with rails
Wall mounted heater with rails and bad
Free standing with integral bed
t Detachable bassinet and wood grain finish standard.
AWarnings Operator Safety 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 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. 6700-0092200) 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.
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 f 2 inches (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. 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 bedside 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 measurements.
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 components 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 recommended 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 responsibihty 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 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 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 Infant Warmer in manual mode for maximum safety. The use of phototherapy equipment may raise the patient’s temperature. 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. Use only the Reusable Ohmeda skin temperature probe (Stock No. 02080697-700) and heat reflective patches (Stock No. 0203-1980-300, 50/pkg)
Precautions or the disposable probe (Stock No. 6600-0208-700, lO/pkg; Stock No. 6600-0196-700. 50/pkg) to monitor the patient’s skin temperature. Use of other manufacturer’s probes may affect the accuracy of warmer operation 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 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. 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 retrolental 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 simultaneously 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. 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
Precautions 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.
ACautions 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 - excessive solution causes damage to internal 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 representatives trained by Ohmeda.
In this section 1.1
Control Unit l-2
Bed Platform l-2
Bassinet (3500 Series) l-2
1.1 General 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. The optional ThermaLink feature simplifies charting and monitoring. RS232 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 accessory items.
1.3 Heater Assembly The warmer is designed to warm infants on a bed surface located 27 inches f 2 inches (69+5 cm) beneath the heater assembly.
WARNING: Bed-to-heater spacing which differs from the specified 27 f 2 inches (69+5 cm) will result in incorrect operation and may affect the patient’s condition. For your convenience, on Model 3000,3100,3500, and 4000 the proper bed-to-heater spacing is indicated by a label located on the right aluminum upright (as viewed from the front).
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 scattering 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 observation 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 diagnostics. Either manual or servo mode of operation may be selected. In the manual mode of operation, select the level of radiant heat output as indicated by the % power display on the control panel. The control circuit then maintains 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 selected control temperature. The patient’s skin temperature is continuously displayed. Alarms activate to alert the operator of a low or high patient temperature, 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 The tiltable relative to the position of the patient on the warmer bed.* bed platform allows Trendelenburg and Fowler positioning. The hydraulic system for the tiltable bed provides a smooth, dampened motion to 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: 1.
Transparent locking side panels which fold down for easy patient access and are removable for cleaning.
Not available on the model 3500 wanner
l/Description 2. A mattress. 3.
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.
5. Front locking casters.
Figure l-l Operating the bassinet locking lever knob
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 between all model Warmers. Accessories can only be mounted to the inside dovetail rail on each upright of the 3500 Warmer.
In this section 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) 2-3 E. Warmer/Bassinet Unlock (model 3500 only) 2-3 F. Accessory Checks 2-3 G. Wall Mount Checkout 2-4 2.3 Control Unit Checkout Procedure 2-4 A. Control Unit Check 2-5 B. Elapsed Timer Check 2-6 C. Observation Light Check 2-6 Raise and Lower Bed Switch Check (Elevating Models D. Only) 2-6 E. Interlock Switch Check 2-7 F. Power Failure, Memory and Battery Test (all models except the 2001 International) 2-7
2.1 Setup Refer to the setup instructions shipped with the warmer for initial unpacking 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 shipping carrier if damage has occurred. Also confirm the presence of all accessory items or factory installed options as listed on the packing slip.
2.2 Mechanical Checkout Procedure A!
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.
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.
A. Overall Appearance 1.
Disconnect the power cord from the ac power source for the mechanical checks portion of this procedure.
Check the overall appearance of the Infant Warmer/ Bassinet System. There should be no obvious damage.
2/Setup and Checkout Procedures 3.
For the model 3500, separate the warmer from the bassinet.
For units with casters, check that all casters are in firm contact with 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 damage 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 1.
WARNING: Regularly inspect the bed side panel latching mechanism, and the bedside locking mechanism on the model 3500, to ensure proper operation.
Check the operation of the tilt mechanism. Verify that the bed platform operates smoothly and locks in normal, Trendelenburg and Fowler positions.
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. 4.
Check the operation of the bed sides. The bed sides should operate smoothly.
For the model 3500 bassinet, remove the keys from the top drawer and lock it. Check that the drawer is securely held closed.
2Betup and Checkout Procedures D. Warmer/Bassinet Interlock (model 3500 only) 1.
Lock the 3500 warmer’s two rear casters.
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 combined unit moves smoothly.
E. Warmer/Bassinet Unlock (model 3500 only) 1.
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 . CAUTION: To prevent the drawers from opening unintentionally while moving the detached bassinet, move it from the front only.
F. Accessory Checks Perform these checks if they are applicable. 1.
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.
WARNING: 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.
WARNING: Due to the increased height of units with the ECMO option 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.
2/Setun and Checkout Procedures G. Wall Mount Checkout Figure 2-1 Wall mount pin insertion
Verify that the warmer is rigidly secured to the wall and the heater assembly is level. Note: To access the control unit and display module for service 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 or with either pin removed.
2.3 Control Unit Checkout Procedure Figure 2-2 Control Panel
Elapsed Heater Control Model Patient Number Temperature Temperature Power % Time Display I
Alarm Alarm Mode Increase Light Apgar Tones On/Off Lights* Silence Switch* Decrease On/Off Switch Mode Apgar Indicator Indicators * *
! A ! A 2-4
Elapsed Time Start/Hold and Reset
Note: Servo mode indicator, mode switch, and probe failure alarm are not present on the model 2001 international control panel. Bed raise/lower are only present on elevating models.
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. 6600-0194-000
2/Setup and Checkout Procedures A. Control Unit Check 1.
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 preceded 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 (v) touch switches to attain the high and low limits as indicated by the % power display. 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 “LL.L” may occur here 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 36.5”C.
Press the increase ( A) touch switch and verify that the maximum servo control temperature attainable is 37.5”C. Note: A patient temperature alarm occurs if the difference between the patient temperature and the control temperature is greater than 1°C (the difference can be adjusted to 0.5”C by a qualified service person).
Press the decrease touch switch and verify that the minimum servo control temperature attainable is 35.O”C.
Disconnect the skin temperature probe. Verify the following: a.
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
2/Setup and Checkout Procedures 8.
Press the alarm silence touch switch and verify the following: a.
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 “HH.H”.
Switch to the manual mode and set the heat at 25% power.
B. Elapsed Timer Check 1.
Press the Start/Hold touch switch to activate the elapsed timer. Verify that the timer starts operating.
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).
Press the Reset touch switch and verify that the timer indicates “0O:OO”. If the elapsed timer is not used for approximately two minutes, the display switches off.
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: Do not continue to run the motor at the upper and lower limit positions; equipment damage may result. 1.
Press the Raise Bed touch switch and verify that the bed raises to a maximum of 46 l/2 inches (118 cm) off the floor.
Press the Lower Bed touch switch and verify that the bed lowers to a minimum of 38 l/2 inches (98 cm) off the floor.