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Check the Bair Hugger therapy website to ensure you have the most recent version of this document.
BAIR HUGGER
SERVICE MANUAL
Model 500/OR Warming Unit
www.bairhugger.com
*
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
reorder #201020A
0470
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Summary of Contents for Bair Hugger 500/OR
- Page 1 Check the Bair Hugger therapy website to ensure you have the most recent version of this document. www.bairhugger.com reorder #201020A BAIR HUGGER SERVICE MANUAL Model 500/OR Warming Unit Warning: Electrical Shock Hazard. There are electrically live parts within the warming unit when it is connected...
- Page 2 We will need to know the serial number of your Bair Hugger unit when you call us. The serial number label on the Model 500/OR unit is affixed to the galvanized pan on the underside of the unit. Arizant Healthcare...
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Page 3: Table Of Contents
500/OR Warming Units ........ - Page 4 Figure 11 Service Carton........23 Bair Hugger 500/OR Service Manual...
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Page 5: Introduction
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 Bair Hugger blanket. This manual describes how to service the Model 500/OR warming unit, and includes maintenance instructions and specifications. -
Page 6: Warnings
Warnings Bair Hugger Therapy Do not use Bair Hugger warming units with any forced-air blanket or cover other than Bair Hugger blankets. Thermal injury may result. Do not use any fluid administration device other than the 241 fluid warming set with the Bair Hugger warming unit. Fluid temperature outside the indicated range may result. -
Page 7: Precautions
Except for specific blanket models, 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;... -
Page 8: Important Information
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. -
Page 9: 500/Or Warming Units
Model 500/OR Series Warming Units Cabinet Cleaning ..........6 Hose Replacement. -
Page 10: Cabinet Cleaning
Use of a wrong hose could result in temperatures outside of the indicated range. Record the maintenance action taken and hours of operation (read from the hour meter) in the Maintenance Log (Appendix). Figure 1. Hose Options Non-swivel Swivel Extended length Bair Hugger 500/OR Service Manual... -
Page 11: Power Fuse Replacement
11. Record the maintenance action taken and the hours of operation (read from the hour meter) in the Maintenance Log (Appendix). Figure 2. Location of Power Fuse Detail Fuse carrier Spare fuse Power entry module (see detail) Bair Hugger 500/OR Service Manual... -
Page 12: Control Board Fuse Replacement
(See Figure 3.) If the 500mA fuse requires replacement, please call Technical Service. The internal fuse on the Model 500/OR is for control board functions only. The power fuses are located in the power entry module. - Page 13 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). Bair Hugger 500/OR Service Manual...
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Page 14: Air Filter Replacement
(see Figure 4). Record the hours and maintenance action taken in the Maintenance Log (Appendix). Figure 4. Location of Air Filter Air filter Filter retainer Rear access panel Hour meter Bair Hugger 500/OR Service Manual... -
Page 15: Over Heat Alarm Testing
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... -
Page 16: Figure 5 Location Of Tp3 & Tp4
The alarm and manual reset constitutes one cycle. NOTE: If the alarm does not reset, allow the unit to alarm for 1 minute before turning the warming unit OFF, then ON again. Bair Hugger 500/OR Service Manual... -
Page 17: Table 1 Over Heat Specification
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 and the Model 22110 Temperature Test Unit. Bair Hugger 500/OR Service Manual... -
Page 18: Over Heat Alarm Thermostat Adjustment
NOTE: Do not block the rear air vents on the test device. Reconnect the warming unit to the power source. Turn the power ON. NOTE: The temperature setting will not affect the over heat test because the control circuit has been bypassed by the jumper wire. Bair Hugger 500/OR Service Manual... -
Page 19: Figure 7 Location Of Over Heat Alarm Thermostat
13. Remove the jumper from between the test points, and close the rear access panel. Resecure the screws. 14. Record the maintenance action taken and the hours of operation (read from the hour meter) in the Maintenance Log (Appendix). Bair Hugger 500/OR Service Manual... -
Page 20: Normal Operating Temperature Testing
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... -
Page 21: Table 2 Model 500 Series Operating Temperatures
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 500/OR Service Manual... -
Page 22: Normal Operating Temperature Adjustment
• Phillips-head screwdriver Method The operating temperature adjustment potentiometer may be accessed through an opening in the upper right corner of the rear access panel (see Figure 9). Figure 9. Location of Operating Temperature Adjustment Potentiometer Bair Hugger 500/OR Service Manual... - Page 23 Replace the rear access panel and resecure the 2 Phillips- head 1/4-turn screws. Record the maintenance action taken and hours of operation (read from the hour meter) in the Maintenance Log (Appendix). Bair Hugger 500/OR Service Manual...
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Page 24: Specifications
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: Key To Figure 10
Motor and Blower Housing Motor Mounting Bracket Heater Bracket, Hose Hanger Handle Front Panel Label Control Board Fuse 200mA Motor Capacitor Filter Housing Display Board Rear Access Panel Power Entry Module Power Fuses (2) Filter Bracket Bair Hugger 500/OR Service Manual... -
Page 26: Figure 10 Exploded Drawing
Bair Hugger 500/OR Service Manual... -
Page 27: Returning Units For Service
Seal the carton with tape. Apply the shipping label addressed to Arizant Healthcare Inc. Using a marking pen, write your RA number (from Technical Support) on the outside of the carton. Figure 11. Service Carton Bair Hugger 500/OR Service Manual... -
Page 28: Troubleshooting
Reattach any loose connections to at thermostat. thermostat. (See Figure 10). Warming unit alarms at too low or Over heat thermostat not in calibration. See Over Heat Alarm Thermostat too high a temperature. Adjustment procedure. Bair Hugger 500/OR Service Manual... -
Page 29: Maintenance Log
Maintenance Log Date Maintenance Action Performed Hour Meter Bair Hugger 500/OR Service Manual... - Page 30 Maintenance Log Date Maintenance Action Performed Hour Meter Bair Hugger 500/OR Service Manual...
- Page 31 Maintenance Log Date Maintenance Action Performed Hour Meter Bair Hugger 500/OR Service Manual...
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Page 32: Symbol Definitions
Symbol Definitions Bair Hugger 500/OR Service Manual... - Page 33 Actamed Limited, Calder Island Way, Wakefield WF2 7AW, United Kingdom • TEL (44) 1924 200550 • FAX (44) 1924 200518 Bair Hugger temperature management products may be covered by one or more of the following patents: US 6,355,915; 6,309,409; 6,309,408;...
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