Bair Hugger 500/OR User Manual Download Page 1

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Model 500/OR Warming Unit

BAIR HUGGER

SERVICE MANUAL

0470

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

STANDBY

position.

Please forward to Biomedical
Engineering Department

Check the Bair Hugger therapy website to ensure you have the most recent version of this document. www.bairhugger.com

reorder #201020A

Summary of Contents for 500/OR

Page 1: ...ive 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 Check the Bair Hugger therapy website to ensure you have the most recent version of this document www bairhugger com reorder 201020A ...

Page 2: ...esentative 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 When You Call for Technical Service We will ne...

Page 3: ...uipment 4 500 OR Warming Units 5 Cabinet Cleaning 6 Hose Replacement 6 Power Fuse Replacement 7 Control Board Fuse Replacement 8 Air Filter Replacement 10 Over Heat Alarm Testing 11 Over Heat Alarm Thermostat Adjustment 14 Normal Operating Temperature Testing 16 Normal Operating Temperature Adjustment 18 Specifications 20 Key to Figure 10 21 Returning Units for Service 23 APPENDIX Troubleshooting ...

Page 4: ...f Power Fuse 7 Figure 3 Location of Control Board Fuse 8 Figure 4 Location of Air Filter 10 Figure 5 Location of TP3 TP4 12 Figure 6 Model 221 Temperature Test Kit and Model 22110 Temperature Test Unit 12 Figure 7 Location of Over Heat Alarm Thermostat 15 Figure 8 Room Temperature vs High Temperature Output 17 Figure 9 Location of Operating Temperature Adjustment Potentiometer 18 Figure 10 Explode...

Page 5: ...R warming unit and includes maintenance instructions and specifications For information about using Bair Hugger blankets or the 241 blood fluid warming set with Bair Hugger units refer to the Instructions for Use included with each of these disposable components Indications for Use The Bair Hugger brand Total Temperature Management System is intended to prevent and treat hypothermia and to provide...

Page 6: ...not warm patients with the warming unit hose alone Thermal injury may result Always attach the hose to a Bair Hugger blanket before providing skin surface warming therapy Alarm Do not continue therapy if the Over Heat Warning light illuminates and the audible alarm sounds Thermal injury may result Turn the warming unit off and contact qualified service personnel If using 241 fluid warming immediat...

Page 7: ...dels Bair Hugger blankets are not sterile and all are intended for single patient use only Placing a sheet between the Bair Hugger blanket and the patient does not prevent contamination of this product Patient Safety Bair Hugger blankets meet the Consumer Product Safety Commission s flammable fabric regulation 16 CFR 1610 however follow standard safety protocols when using high intensity heat sour...

Page 8: ... as not requiring manufacturer s 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 the instructions in this service manual Safety Inspection Perform a safety inspection after making repairs to the Bair Hugger warming unit and before returning ...

Page 9: ... 6 Power Fuse Replacement 7 Control Board Fuse Replacement 8 Air Filter Replacement 10 Over Heat Alarm Testing 11 Over Heat Alarm Thermostat Adjustment 14 Normal Operating Temperature Testing 16 Normal Operating Temperature Adjustment 18 Specifications 20 Key to Figure 10 21 Returning Units for Service 23 ...

Page 10: ...damage the labels and other plastic parts Hose Replacement Method 1 Grasp the hose at the base and pull it free from the hose coupling flange 2 Insert the new hose in the blower outlet flange NOTE There are a number of variations of hoses Figure 1 to provide for specific therapeutic needs These various hose options are not interchangeable If the hose were to be mated improperly there would be an o...

Page 11: ...the center of the power entry module see Figure 2 4 Use the small screwdriver to remove the fuse carrier from the power entry module 5 Remove the blown fuse s from the fuse carrier 6 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 7 Replace the fuse carrier into the power entry module 8 Reattach the p...

Page 12: ...tion Tools Equipment Phillips head screwdriver Method 1 Disconnect the warming unit from the power source 2 Remove the 8 Phillips head screws around the top cover 3 A cable is attached to the underside of the cover see Figure 3 Carefully lift the cover straight up about 3 inches 7 6 cm 4 Tilt the cover to access the mounted cable that attaches to the cover s display board Note the direction in whi...

Page 13: ...ed on the adjacent label 7 Reconnect the cable to the display board ensure that the mounting direction is correct 8 Place the top cover back into position 9 Replace the 8 Phillips head screws around the cover 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 Appendix ...

Page 14: ...rews on the filter retainer remove the retainer and pull out the filter 4 Record the hour meter reading and date on the new air filter label 5 Place the new filter into the filter box as shown below cross bars on the filter face OUT 6 Replace the filter retainer 7 Tighten the 2 Phillips head 1 4 turn screws on the filter retainer 8 Replace the rear access panel 9 Tighten the 2 Phillips head 1 4 tu...

Page 15: ...used with Bair Hugger warming units use of the temperature test device with any other warming system may result in imprecise readings If using 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 Service Frequency 6 month intervals or 500 hours of use Tools Equipment Mode...

Page 16: ... 5 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 because the control circuit has been bypassed by the jumper wire 6 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 approx...

Page 17: ...s of the test did meet specified limits turn the warming unit power OFF and disconnect the warming unit from the power source 10 Remove the hose end from the port on the temperature test device 11 Remove the jumper wire and reinstall the rear access panel 12 Record the maintenance action taken and hours of operation read from the hour meter in the Maintenance Log Appendix Table 1 Over Heat Specifi...

Page 18: ...re Test Kit or Model 22110 Temperature Test Unit Small slotted screwdriver Phillips head screwdriver Short jumper wire with alligator clips If using a Model 22110 Temperature Test Unit Use a calibrated temperature meter that can accept a male subminiature connector and read a K style thermocouple e g a Fluke Model 52 K J Thermometer If the connector does not fit your meter you can remove the provi...

Page 19: ...ure 9 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 10 Retest the alarm temperature to verify correct adjustment at le...

Page 20: ...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 when used with Bair Hugger warming units use of the temperature test device with any other warming system may result in imprecise readings Service Frequency 6 month intervals or 500 hours of u...

Page 21: ...e 2 6 If the HIGH temperature setting is not within specified limits adjust the normal operating temperature See the Normal Operating Temperature Adjustment section 7 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 the test 8 Turn th...

Page 22: ... properly set and MED and or LOW do not meet specifications call Arizant Healthcare 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 When in d...

Page 23: ...erating temperature If the tested operating temperature was above specified limits turn the screwdriver COUNTERCLOCKWISE to lower the operating temperature 5 Adjust the potentiometer until the temperature read out meets the limits specified in Table 2 for the HIGH temperature setting correlated to ambient temperature as in Figure 8 6 Verify that the MED and then LOW temperature settings are also w...

Page 24: ...e Model 221 Temperature Test Kit or the 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 assuming the back pressure of a Bair Hugger blanket or a Model 221 Temperature Test Kit or the Model 22110 Temperature Test Unit HIGH 43 ...

Page 25: ...t 6 Cover 7 Base Plate 8 Filter 0 2 Micron 9 Caster 4 11 Motor and Blower Housing 12 Motor Mounting Bracket 13 Heater 15 Bracket Hose Hanger 16 Handle 17 Front Panel Label 19 Control Board Fuse 200mA 21 Motor Capacitor 22 Filter Housing 23 Display Board 24 Rear Access Panel 25 Power Entry Module 26 Power Fuses 2 27 Filter Bracket ...

Page 26: ...Bair Hugger 500 OR Service Manual 22 Figure 10 Exploded Drawing J1 J2 Detail of Control Board ...

Page 27: ...e 2 small foam pads Leave the large foam pad in place in the bottom of the carton 3 Make sure the wheels on the warming unit are turned toward the inside and carefully lower the unit into the carton 4 Insert the two small foam pads see Figure 11 5 Drape the hose over the unit as shown in the figure 6 Seal the carton with tape 7 Apply the shipping label addressed to Arizant Healthcare Inc 8 Using a...

Page 28: ...he warming unit circulates air but Poor connections of the thermocouple Reattach any loose thermocouple leads it does not heat J2 on the control board connections See Figure 10 The warming unit heats at some Loose connection at J2 Reattach loose connections temperature settings but not on See Figure 10 others Example the warming unit works on LOW setting but not on HIGH setting Warming unit has be...

Page 29: ...Bair Hugger 500 OR Service Manual 25 Maintenance Log Date Maintenance Action Performed Hour Meter ...

Page 30: ...Bair Hugger 500 OR Service Manual 26 Maintenance Log Date Maintenance Action Performed Hour Meter ...

Page 31: ...Bair Hugger 500 OR Service Manual 27 Maintenance Log Date Maintenance Action Performed Hour Meter ...

Page 32: ...Bair Hugger 500 OR Service Manual 28 Symbol Definitions ...

Page 33: ...6 309 408 6 290 716 6 287 327 6 254 337 6 241 755 6 228 107 6 210 428 6 203 567 6 176 870 6 168 612 6 146 412 6 129 936 6 126 681 6 126 393 6 036 722 5 997 572 5 968 084 5 964 792 5 928 274 5 824 025 5 800 489 5 773 275 5 733 318 5 697 963 5 674 269 5 658 325 5 620 482 5 545 194 5 405 371 5 350 417 5 336 250 5 324 320 5 300 102 5 300 101 5 184 612 5 044 364 4 572 188 Japan 2 561 326 Canada 1 325 4...

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