Model 505 Service Manual, reorder #200597D
Contents
1. We recommend clamping the unit no higher than 44 112cm on an IV pole with a minimum 14 35cm radius wheelbase Failure to do so may result in IV pole tipping catheter site trauma and patient injury Electrical shock hazard Do not disassemble the temperature management unit unless you are a qualified service technician There are electrically live parts with in the unit when it is connected to a power source even when the unit is in Standby mode The Bair Hugger temperature management unit meets medical electronic interference requirements If radio frequency interference with other equipment should occur connect the unit to a different power source Federal law USA restricts this device to sale by or on the order of a licensed healthcare professional To reliably ground this Bair Hugger warming unit only connect to receptacles marked Hospital Only or Hospital Grade I Bair Hugger Model 505 Service Manual Read Before Servicing Equipment The repair calibration and servicing of the warming unit requires the skill of a qualified medical equipment service technician who is familiar with good practice for medical device repair If service is designated as not requiring manufacturers attention the technical information is provided in this service manual or will be provided on request by Arizant Healthcare Inc Refer to Service Manual Perform all repairs and maintenance in accordance with the2. first obtain a Return Authorization RA number from a technical service representative Please use this number on all correspondence when returning a device for service A shipping carton will be delivered to you at no charge if needed We will service and ship your device within five 5 working days of our receipt Call your local supplier or sales representative to inquire about loaner devices while your device is being serviced Worldwide Contact your local distributor concerning in warranty repair and exchange 22 E Bair Hugger Model 505 Service Manual A Returning Units for Service Tools Equipment Method Arizant Healthcare service carton Tape dispenser Shipping label Marking pen Figure 11 Service Carton Upper foam pad Lower foam pad r E A Call Technical Support see inside front cover for phone number to get a Return Authorization RA number and a service carton Open the carton and remove the upper foam pad Leave the lower foam pad in place in the bottom of the carton Rotate the hose elbow toward the back of the unit and carefully lower the unit into the carton Place the hose as shown in Figure 11 Insert the upper foam pad see Figure 11 Seal the carton with tape Apply the shipping label addressed to Arizant Healthcare Inc Using the marking pen write your RA number from Technical Support on the outside of the carton I Bair Hugger Model 505 Service Manu
3. HIGH Nominal Temperature on Test Kit C Ambient Room Temperature C At HIGH Nominal Temperature on Test Kit F 114 60 62 64 66 68 70 72 74 76 78 80 Ambient Room Temperature F I Bair Hugger Model 505 Service Manual 15 Normal Operating Temperature Testing 16 5 After correcting for ambient temperature the tested normal operating temperature should meet the limits specified in Table 2 If the HIGH temperature setting is not within specified limits adjust the normal operating temperature See the Normal Operating Temperature Adjustment section If the HIGH temperature setting is within specified limits verify the MED and then LOW settings against specified limits allow the warming unit to operate at each temperature setting for about 3 to 5 minutes before test Turn the warming unit to STANDBY Remove the hose end from the port on the temperature test device Record the maintenance action taken and the hours of operation read from the hour meter in the Maintenance Log section Table 2 Model 500 Series Operating Temperatures Operating temperature Average temperature at the end of the hose HIGH 43 3 C 109 4 5 4 F MED 38 3 C 100 4 5 4 F LOW 32 3 C 89 6 5 4 F Note Air temperature reaching the patient is approximately 2 C lower than the listed temperatures Bair Hugger Model 505 Service Manual Normal Operating T
4. VAC 50 Hz 4 5 Amperes 100 VAC 50 60 Hz 10 Amperes I Bair Hugger Model 505 Service Manual Key to Figure 10 20 VD AN GO vi KR WO E gt MN N N N NHN NO RRR RRR pop op A Rm Lu NH ra OO AN A WN KN Bulb Type Thermostat Hour Meter Control Board Thermocouple Cabinet Top Cover Base Filter 0 2 Micron V Bumper Heater Housing Motor 115V 60Hz Heater 120V Handle Top Warning Label Control Board Fuse 200mA Overtemp Switch Electrical Shield Control Panel Label Back Plate Power Entry Module Power Fuses 2 Filter Bracket Elbow Assembly Hose Assembly Bair Hugger Model 505 Service Manual Figure 10 Exploded Drawing CL Detail of Control Board 21 I a Bair Hugger Model 505 Service Manual Technical Support and Customer Service United States Worldwide Within Europe Technical Service TEL 1 952 947 1200 Technical Service TEL 49 4154 9934 0 1 800 733 7775 FAX 49 4154 9934 20 Order Placement TEL 1 952 947 1200 Toll free in Germany 0800 100 1236 1 800 733 7775 Order Placement USA FAX 1 952 947 1400 FAX 1 952 947 1400 When You Call for Technical Support We will need to know the serial number of your Bair Hugger unit when you call us On Model 505 units the serial number label is affixed to the rear panel In Warranty Repair and Exchange USA Replacement parts to correct a problem are delivered at no charge To return a device to Arizant Healthcare Inc for service
5. instructions in this service manual Safety Inspection Perform a safety inspection after making repairs to the Bair Hugger warming unit and before returning the warming unit to service A safety inspection should include a test of the operating temperatures described in this service manual the Over Heat alarm system as well as a leakage current test Proper Use and Maintenance Arizant Healthcare Inc assumes no responsibility for the reliability performance or safety of the equipment if Modifications or repairs are performed by non authorized personnel e The equipment is used in a manner other than that described in the Operator s or Service Manuals e The equipment is installed in an environment that does not meet the relevant grounding requirements Bair Hugger Model 505 Service Manual Service Procedures Cabinet Cleaning Tools Equipment Soft cloth lightly dampened with water and mild detergent Method 1 Disconnect the warming unit from the power source 2 Wipe the exterior of the warming unit clean CAUTION Do not use a dripping wet cloth when cleaning the AN warming unit Moisture may seep into the electrical contacts and damage the components Also do not use alcohol or other solvents to clean the cabinet Solvents may damage the labels and other plastic parts Hose Replacement Method 1 Press the tab on the blower outlet to release the existing hose 2 Attach the repla
6. meter that can accept a male subminiature connector and read a K style thermocouple e g a Fluke Model 52 K J Thermometer Ifthe connector does not fit your meter you can remove the provided connector and attach a connector that fits your meter 10 Bair Hugger Model 505 Service Manual Over Heat Alarm Testing Method The Over Heat alarm test panel is located on the back panel of the Model 505 see Figure 5 1 Insert the open hose end from the warming unit in the port on the temperature test device see Figure 6 NOTE Do not block the rear air vents on the test device Figure 5 Location of Over Heat Figure 6 Model 22110 Temperature Test Unit Alarm Test Panel 2 Connect the warming unit to the power source and turn the warming unit power ON NOTE The temperature setting will not affect the Over Heat test 3 Using the Phillips head screwdriver remove the screw on the alarm test panel The unit will go into an over heat condition when the test panel is loose 4 When the over heat alarm activates both visually and audibly note the maximum temperature achieved Let the alarm operate for at least 1 minute or until the temperature read out is approximately 38 C 100 F then turn the warming unit OFF and then ON the alarm should also turn off The alarm and manual reset constitutes one cycle NOTE If the alarm does not turn off allow the unit to alarm for 1 more minute before turning the
7. patient exposure to temperatures outside of the indicated range and may lead to patient injury Tools Equipment A AN Closely follow instructions for thermostat adjustment Dangerous voltages are present at the terminals of the thermostat e Always use a Model 221 Temperature Test Kit or a Model 22110 Temperature Test Unit to verify output temperatures Recalibrate the temperature test kit at least once a year The Model 22110 Temperature Test Unit does not need to be calibrated The meter it is connected to must be calibrated Follow the calibration instructions in the meter service manual or follow standard facility calibration schedules When in doubt contact Arizant Healthcare Technical Support for assistance in temperature adjustment Method Model 221 Temperature Test Kit or a Model 22110 Temperature Test Unit Small slotted screwdriver Phillips head screwdriver Insert the open hose end from the warming unit in the port on the temperature test device NOTE Do not block the rear air vents on the test device Connect the warming unit to the power source and turn the warming unit power ON NOTE The temperature setting will not affect the over heat adjustment Using the Phillips head screwdriver remove the screw on the alarm test panel Lift and remove the panel I 13 Bair Hugger Model 505 Service Manual Over Heat Alarm Thermostat Adjustment Figure 7 Location of Over Heat Alarm Thermosta
8. section Bair Hugger Model 505 Service Manual Specifications Physical Characteristics Dimensions 13 in high x 10 in deep x 11 in wide 33 cm high x 25 cm deep x 28 cm wide Weight 11 5 lb 5 2 kg Safety System Thermostat Bulb and capillary type Over Heat Warning If the temperature gets too high the Over Heat warning light on the front panel will illuminate and the alarm will sound The heat will shut off and the blower will continue to run High Temperature Thermostat The thermostat interrupts power to the heater and activates the alarm at a preset high temperature of 53 3 C 127 4 5 4 F or less at the end of the hose as determined by the Model 221 Temperature Test Kit or Model 22110 Temperature Test Unit Temperature Characteristics Air temperatures reaching the patient are approximately 2 C lower than the listed temperatures Operating Temperatures Average temperature at the end of the hose HIGH 43 3 C 109 4 5 4 F MED 38 3 C 100 4 5 4 F LOW 32 3 C 89 6 5 4 F Electrical Characteristics Leakage Current Meets regulatory standards for leakage current Motor Fractional horsepower single phase Heater An electric heating element Fuses 10A 200mA 110 120 VAC Units 6 3A 100mA 220 240 VAC Units 10 160mA 100 VAC Units Device Ratings 110 120 VAC 60 Hz 10 Amperes 220 240
9. top cover back into position Replace all screws NOTE It may be necessary to remove the air filter to correctly position the lower portion of the retainer bracket inside the unit 10 Reconnect the warming unit to the power source 11 Record the maintenance action taken and the hours of operation read from the hour meter in the Maintenance Log section Figure 3 Location of Control Board Fuse Flip the top cover to access the control board Phillips screws Control board fuse Retainer bracket Retainer bracket hooks into top cover and is secured by screws through two front feet Bair Hugger Model 505 Service Manual Air Filter Replacement The air filter is mounted in the bottom of the warming unit See Figure 4 Tools Equipment Phillips head screwdriver Service Frequency Every 6 months or 500 hours of use Method 1 Disconnect the warming unit from the power source 2 Remove the M6 x 25 pan head screw on the bottom on the unit The filter should slide out easily 3 Record the hour meter reading and date on the new air filter label The hour meter is located in the lower left corner of the top warning label see Figure 4 4 Slide the new filter into the base of the unit 5 Replace the M6 x 25 pan head screw on the bottom on the unit 6 Reconnect the warming unit to the power source 7 Record the hour meter reading and maintenance action taken in the Maintena
10. Bair Hugger Model 505 Warming Unit Service Manual Warning Electrical Shock Hazard There are electrically live parts within the warming unit when it is connected to a power source even when the switches are in the OFF or STANDBY position Please forward to Biomedical Engineering Department BAIR HUGGER MODELL 505 TEMPERATURMANAGEMENTGERAT SERVICE GEBRAUCHSANLEITUNG Vorsicht Gefahrliche elektrische Spannung In einem an das Stromnetz angeschlossenen Warmegerat stehen bestimmte elektrische Komponenten auch dann unter Strom wenn der Schalter auf AUS oder BEREITSCHAFTSMODUS geschaltet ist Bitte an die Abteilung fur biomedizinische Technik weiterleiten UNITE DE GESTION DE TEMPERATURE BAIR HUGGER MODELE 505 SERVICE MANUEL Mise en garde Risque d lectrocution Certaines pieces sont lectriquement charg es dans les appareils de r chauffement lorsque ceux ci sont connect s a une source d alimentation et ce m me si l appareil est en position OFF arr t ou STANDBY attente A transmettre au Service d ing nierie biom dicale Total Temperature Management System Bair Hugger Model 505 Warming Unit Service Manual Francais 61 Table of Contents INtrOdUCHON S 1 Description of the Total Temperature Management SysteM 1 lol TER 1 Kure leier 1 Elle usa aid k HE Ie ae Tig ah A an astas es 2 A eee ada Tala ino acc eat 3 NOT COS ee iia a pt s ee a de o 3 Read Before
11. E Do not block the rear air vents on the test device 2 Turn the warming unit power ON and allow it to operate at HIGH for about 3 to 5 minutes before adjusting the potentiometer fl Bair Hugger M 17 odel 505 Service Manual Normal Operating Temperature Adjustment Figure 9 Location of Operating Temperature Adjustment Potentiometer 18 Operating temperature potentiometer access 3 Insert the slotted screwdriver in the potentiometer access hole You must access the potentiometer blindly so carefully move the screwdriver until it fits into the slot of the potentiometer If the tested operating temperature was below specified limits turn the screwdriver CLOCKWISE to increase the operating temperature e If the tested operating temperature was above specified limits turn the screwdriver COUNTERCLOCKWISE to lower the operating temperature Adjust the potentiometer until the temperature read out meets the limits specified in Table 4 for the HIGH temperature setting correlated to ambient temperature as in Figure 8 Verify that the MED and then LOW temperature settings are also within specified limits If the HIGH range is properly set and MED and or LOW do not meet specs call Technical Service Turn the warming unit power OFF and remove the hose from the port on the temperature test device Record the maintenance action taken and hours of operation read from the hour meter in the Maintenance Log
12. Servicing Equipment k n 4 Service ProcedureS 4 44 eee eee eee eee eee eee O eee 5 Cabinet Cleaning ee EELER Si EELER EELER EE ER A 5 Hos REPlaCOMON sico di sk a ghil ET 5 Power Fuse Replacement eg nd RENATE ENER e ASA e 6 Control Board Fuse Replacement eee tenet eee n 7 Ait Filter Replacement scricirccisisisivicisisiccsisicinericisiedirisdidiiii 9 Over Heat Alarm Testing lt lt lt lt lt c 1 lt kn 10 Over Heat Alarm Thermostat Adjustment lt lt lt lt lt lt lt lt lt lt w44 13 Normal Operating Temperature Testing lt lt lt lt lt lt lt w444 15 Normal Operating Temperature Adjustment 00 0 ccc eee cence eee eaee 17 SpecificationS ANNER NEIE NNN eee aire i i i IS BA 8 ig a eee eee 19 Key to Figure 10 sise sitesi ete testis a eed 20 Technical Support and Customer Service cc ceci caren ance 22 When You Call for Technical SUPPONlt e eee n n k 22 In Warranty Repair and Exchange USA ccc k n 22 Returning Units for Service 23 Troubleshooting o ccs c e sa da 06 4 ete ee ee ee eee K 24 Maintenance O Seth eee 25 Symbol Definitions 28 I Bair Hugger Model 505 Service Manual Introduction Description of the Total Temperature Management System The Bair Hugger brand Total Temperature Management system consists of a Bair Hugger forced ai
13. al 23 Troubleshooting Call Technical Support for Replacement Parts Possible Cause Remedy Service Procedure The warming unit does not turn on The warming unit circulates air but it does not heat The warming unit heats at some temperature settings but not on others Example the warming unit works on LOW setting but not on HIGH setting Warming unit alarms upon startup Warming unit alarms at too lower too high a temperature 24 Damaged or unplugged power cord Blown power fuses Poor or loose wire connections No power to outlet Loose cord at power entry cord Poor connections of the thermocouple J2 on the control board See Figure 10 Loose connection at J2 See Figure 10 Warming unit has been in an over heat condition and temperature has decreased Loose wire connections at the desired heat setting Open thermostat Poor wire connections at thermostat Over heat thermostat not in calibration Replace the cord or plug in the warming unit Replace the blown fuses See Power Fuse Replacement procedure Check the connectors at the power entry module Ensure that connector J1 is firmly seated see Figure 10 Check power at the outlet Firmly seat the power module Reattach any loose thermocouple leads connections Reattach loose connections Turn the warming unit OFF and then back ON Reattach any loose connections Call Technical Service Reattach
14. alibrated Model 221 Temperature Test Kit or a Model 22110 Temperature Test Unit Arizant Healthcare Inc assumes no responsibility for the reliability safety or performance of the Bair Hugger system if warming unit temperature testing or adjustments are made in any other manner than that described here Improper measurement or adjustment of the warming unit s normal operating temperature could result in patient exposure to temperatures outside of the indicated range and may lead to patient injury Service Freguency 6 month intervals or 500 hours of use Tools Eguipment Model 221 Temperature Test Kit or Model 22110 Temperature Test Unit Method 1 Insert the open hose end from the warming unit in the port on the temperature test device see Figure 6 NOTE Do not block the rear air vents on the test device 2 Turn the warming unit power ON and select the HIGH temperature setting Always begin testing at the HIGH setting Note the ambient room temperature 4 After approximately 5 minutes of operation note the temperature read out Use Figure 8 to correlate ambient temperature to the warming unit s operating temperature Figure 8 Room Temperature vs High Temperature Output Warming unit temperature setting should be on HIGH when conducting this test ptt ttt tt 1 Li EE pt ert tt tt LT tt Tt I PT TT tT tT tt Yt EE 15 16 17 18 19 20 21 22 23 24 25 26 27 45 A N At
15. any loose connections to thermostat See Figure 10 See Over Heat Alarm Thermostat Adjustment procedure Bair Hugger Model 505 Service Manual Maintenance Log Maintenance Action Performed I 25 Bair Hugger Model 505 Service Manual Maintenance Log Maintenance Action Performed Hour Meter Bair Hugger Model 505 Service Manual Maintenance Log Maintenance Action Performed I 27 Bair Hugger Model 505 Service Manual 28 Symbol Definitions HO za loo ON STANDBY ON used on isolation switch OFF used on isolation switch ON OFF push button switch Temperature Control Equipotentiality plug Ground Fuse Attention see appropriate documents Dangerous Voltage Type BF Equipment patient applied Voltage Alternating Current AC Special Refuse discard separately Protective earth ground No free hosing Bair Hugger Model 505 Service Manual
16. cement hose by inserting the flange end at a 45 angle in the grooved blower outlet then snap the hose into place See Figure 1 Figure 1 Attaching the Replacement Hose Press this Insert flange into tab to groove and snap into release place hose I Bair Hugger Model 505 Service Manual Power Fuse Replacement Tools Equipment The power fuses are located in the power entry module A spare fuse is located in the fuse carrier see Figure 2 Method Figure 2 Location of Power Fuse Power entry module see detail Phillips head screwdriver Small slotted screwdriver A 7 8 9 Disconnect the warming unit from the power source Remove the 2 Phillips head screws that secure the cord retainer Remove the power cord Locate the fuse carrier in the center of the power entry module see Figure 2 the power entry module Remove the blown fuse s from the fuse carrier Place the new fuse s as marked into the fuse carrier CAUTION Replace only with the fuse capacity and type that is indicated on the adjacent label Replace the fuse carrier into the power entry module Reattach the power cord Replace the 2 Phillips head screws to reattach the cord retainer 10 Reconnect the warming unit to the power source 1 1 Record the maintenance action taken and the hours of operation read from the hour meter in the Maintenance Log section Use the small screwdriver to re
17. emperature Adjustment Z WARNING Improper adjustment of the warming unit s normal operating temperature could result in patient exposure to temperatures outside of the indicated range and may lead to patient injury e Closely follow instructions for temperature adjustment e Always use a Model 221 Temperature Test Kit or a Model 22110 Tools Equipment Temperature Test Unit to verify output temperatures e Always make adjustments relative to the HIGH temperature setting on the warming unit When the HIGH setting is accurately adjusted the MED and LOW settings should also be within specified limits If the HIGH range is properly set and MED and or LOW do not meet specs call Technical Service Recalibrate the temperature test kit at least once a year The Model 22110 Temperature Test Unit does not need to be calibrated The meter it is connected to must be calibrated Follow the calibration instructions in the meter service manual or follow standard facility calibration schedules e When in doubt contact Technical Service for assistance in temperature adjustment Method l Model 221 Temperature Test Kit or Model 22110 Temperature Test Unit Small slotted screwdriver The operating temperature adjustment potentiometer may be accessed through openings in the upper right corner of the rear access panel see Figure 9 Insert the open hose end from the warming unit in the port on the temperature test device NOT
18. lt The Bair Hugger temperature management unit has been designed to operate safely ONLY with Arizant Healthcare disposable components Use with other products may cause thermal injury To the full extent permitted by law the manufacturer and or importer declines all responsibility for thermal injury resulting from the unit being used in conjunction with non Arizant Healthcare products Do not warm patients with the temperature management unit hose alone Thermal injury may result Always connect the hose to a Bair Hugger blanket or Bair Paws gown before providing therapy Do not place the non perforated side of the blanket on the patient Thermal injury may result Always place the perforated side that is with small holes towards the patient Do not continue temperature management therapy if the over temp indicator light illuminates and the alarm sounds Thermal injury may result Unplug the unit and contact a qualified service technician Do not continue 241 blood fluid warming therapy if the over temp indicator light illuminates and the alarm sounds Immediately stop fluid flow and discard the blood fluid warming set Unplug the temperature management unit and contact a qualified service technician Do not use a forced air warming device over transdermal medication Increased drug delivery and patient injury or death may occur Do not allow the patient to lie on the warming unit hose or allow the hose to directly contact
19. move the fuse carrier from O Detail Fuse carrier Bair Hugger Model 505 Service Manual Control Board Fuse Replacement Tools Equipment Control board fuses are located on the control board See Figure 3 The internal fuses on the Model 505 are for control board functions only The power fuses are located in the power entry module Instructions for power fuse replacement can be found in the Power Fuse Replacement section Method Phillips head screwdriver 7 Disconnect the warming unit from the power source Turn the Model 505 unit over so that the bottom panel is facing up Using the Phillips head screwdriver remove the screw from each of the 2 front feet bumpers and remove the feet Remove the Phillips head screw from the center of the upper rear panel Remove the 2 Phillips head screws located under the bed hooks on the upper rear panel Turn the unit right side up Lift the top cover and unhook the front of the top cover from the retainer bracket inside The control panel is located on the underside of the top cover See Figure 3 for location of the fuse Remove the fuse and replace with the new one CAUTION Replace only with the fuse capacity and type that is indicated on the adjacent label I Bair Hugger Model 505 Service Manual Control Board Fuse Replacement 8 Hook the retainer bracket onto the front of the top cover 9 Place the
20. nce Log section Figure 4 Location of Air Filter and Hour Meter Hour meter Air filter I Bair Hugger Model 505 Service Manual Over Heat Alarm Testing Service Frequency Tools Equipment A WARNING Perform all testing and adjustments of warming unit temperature with a calibrated Model 221 Temperature test kit or a Model 22110 Temperature test unit Arizant Healthcare Inc assumes no responsibility for the reliability safety or performance of the Bair Hugger system if warming unit temperature testing or adjustments are made in any other manner than that described here Improper measurement or adjustment of the warming unit s over heat alarm setting could result in patient exposure to temperatures outside of the indicated range and may lead to patient injury NOTE The Model 221 Temperature Test Kit and the Model 22110 Temperature Test Unit are designed to simulate the operating characteristics of Bair Hugger blankets and Bair Paws gowns when used with Bair Hugger warming units use of the temperature test device with any other warming system may result in imprecise readings Ifusing the Model 221 Test Kit temperature readings are taken from the test kit itself If using the Model 22110 Test Unit temperature readings are taken from a calibrated temperature meter 6 month intervals or 500 hours of use Phillips head screwdriver If using the Model 22110 Temperature Test Unit e Use a calibrated temperature
21. r warming unit and disposable components including Bair Hugger forced air blankets and the 241 blood fluid warming set and Bair Paws patient warming gowns The system and disposables are intended for use in clinical settings including the operating room The warming unit draws ambient air through a filter and warms the air to the specified temperature It then delivers the warmed air through a hose to the blanket or gown This manual describes how to service the Model 505 warming unit and includes maintenance instructions and specifications For information about using Bair Hugger blankets the 241 blood fluid warming set or Bair Paws gowns with Bair Hugger units refer to the Instructions for Use included with each of these disposable components Indications The Bair Hugger Temperature Management system is intended to prevent and treat hypothermia In addition the temperature management system can be used to provide patient thermal comfort when conditions exist that may cause patients to become too warm or too cold The temperature management system can be used with adult and pediatric patients Contraindications Do not apply heat to lower extremities during aortic cross clamping Thermal injury may occur if heat is applied to ischemic limbs I Bair Hugger Model 505 Service Manual Warnings 10 Do not leave patients with poor perfusion unmonitored during prolonged warming therapy sessions Thermal injury may resu
22. t 4 10 11 12 Locate the over heat adjustment thermostat see Figure 7 NOTE Adjustment of the over heat alarm thermostat is most easily done while the temperature read out is climbing Use a small slotted screwdriver to adjust the thermostat e If the tested alarm temperature was below the specified limits turn the screwdriver CLOCKWISE to increase the alarm temperature e If the tested alarm temperature was above specified limits turn the screwdriver COUNTERCLOCKWISE to lower the alarm temperature Fine tune the adjustment until the warming unit alarms at the specified temperature Manually turn the warming unit to STANDBY then ON again This manual reset constitutes one cycle Retest the alarm temperature to verify correct adjustment at least 2 times Allow the warming unit to cycle before each test When the warming unit alarm setting is within the specified limit turn the warming unit to STANDBY and disconnect it from the power source Remove the hose end from the temperature test device Replace the over heat alarm test panel Resecure the screw Record the maintenance action taken and the hours of operation read from the hour meter in the Maintenance Log section Over heat alarm thermostat access detail 14 Bair Hugger Model 505 Service Manual Normal Operating Temperature Testing WARNING Perform all testing and adjustments of warming unit AN temperature with a c
23. the patient s skin during patient warming thermal injury may result Equipment not suitable for use in the presence of a flammable anesthetic mixture with air or with oxygen or nitrous oxide Resuable blankets made from woven fabric or blankets without discrete visible holes can cause the safety system of this unit to fail which may result in serious thermal injury This warming unit has been designed to operate safety ONLY with Bair Hugger blankets and Bair Paws gowns Bair Hugger Model 505 Service Manual Cautions Notices Except for specific blanket models Bair Hugger blankets are not sterile and are all intended for single patient use ONLY Placing a sheet between the Bair Hugger blanket and the patient does not prevent contamination of this product Monitor the patients temperature and cutaneous response every 10 20 minutes or according to institutional protocol and monitor the patients vital signs regularly Adjust air temperature or discontinue therapy when the therapeutic goal is reached or if vital sign instability occurs Notify physician of vital sign instability immediately Do not leave pediatric patients unattended during therapy Do not initiate temperature management therapy unless the temperature management unit is safely placed on a hard surface or securely mounted Otherwise injury may result To prevent tipping clamp the Temperature Management Unit to an IV pole at a height that provides stability
24. warming unit to STANDBY then ON again I 11 Bair Hugger Model 505 Service Manual Over Heat Alarm Testing 12 10 Allow the warming unit to cycle 2 times more after the first satisfactory reading When the alarm activates note the alarm temperature read out See Table 1 for specified limits NOTE The first over heat cycle temperature may be slightly higher when started from a cold start If the results of the test did not meet specified limits adjust the over heat thermostat See the Over Heat Alarm Thermostat Adjustment section If the results of the test did meet specified limits turn the warming unit to STANDBY and disconnect the warming unit from the power source Remove the hose end from the port on the temperature test device Retighten the screw on the over heat alarm test panel Record the maintenance action taken and hours of operation read from the hour meter in the Maintenance Log section Table 1 Over Heat Specification Model 500 Series High Temperature Thermostat The thermostat interrupts power to the heater and activates the alarm at a preset high temperature of 53 3 C 127 4 5 4 F or less at the end of the hose as determined by the Model 221 Temperature Test Kit or the Model 22110 Temperature Test Unit Bair Hugger Model 505 Service Manual Over Heat Alarm Thermostat Adjustment WARNING Improper adjustment of the warming unit s over heat alarm setpoint could result in
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