Bair Hugger 500/OR User Manual

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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

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

Table of Contents

Questions and Answers:

Q
qmcdonaldAug 5, 2025
How to fix a Bair Hugger 500/OR warming unit that does not turn on?
- A
  Amber PowellAug 5, 2025
  If your Bair Hugger Medical Equipment warming unit isn't turning on, several factors could be at play. First, make sure the power isolation switch is turned on. Check the power cord for damage or if it's unplugged; replace it or plug it in securely. Also, inspect the power fuses and replace them if they're blown. Examine the connectors at the power entry module (if equipped) for poor or loose wire connections. Verify that the outlet has power. Finally, ensure the power cord is firmly seated at the power entry cord.
K
Kayla GuerreroAug 11, 2025
What to do if my Bair Hugger Medical Equipment warming unit heats at some temperature settings but not on others?
- J
  Jacob CampbellAug 11, 2025
  If your Bair Hugger Medical Equipment warming unit heats at some temperature settings but not on others, there are a few potential causes. Check for loose connections at J2 and reattach them if necessary. If the warming unit has been in an overheat condition, try turning it off and then back on. Also, inspect the wire connections at the desired heat setting and reattach any loose connections.
J
Joann JonesAug 17, 2025
Why is my Bair Hugger Medical Equipment warming unit circulating air but not heating?
- W
  William BallAug 17, 2025
  If your Bair Hugger Medical Equipment warming unit circulates air but doesn't heat, it could be due to poor connections of the thermocouple (J2) on the control board. Try reattaching any loose thermocouple lead connections to resolve this issue.

Bair Hugger 500/OR Specifications

General

Brand	Bair Hugger
Model	500/OR
Category	Medical Equipment
Language	English

Summary

Technical Service and Support

Contact and Repair Information

Provides technical support contact details, order placement, and in-warranty repair process.

Preparing for Technical Support

Advises on necessary information, like serial numbers, before contacting technical service.

Product Safety and Operation

System Introduction and Indications

Explains the Bair Hugger system, its components, and intended use for patient warming.

Contraindications and Warnings

Details critical situations for system non-use and general warnings to prevent harm.

Operational Precautions

Covers monitoring, pediatric use, sterility, patient safety, and visual distortion concerns during operation.

Important Information and Hazards

Highlights explosion, electrical shock, interference hazards, and requirements for qualified service personnel.

Model 500/OR Series Service Procedures

Routine Maintenance

Instructions for basic upkeep, including cabinet cleaning and hose replacement.

Power Fuse Replacement

Step-by-step guide for replacing power fuses.

Control Board Fuse Replacement

Procedure for replacing the fuse located on the control board.

Air Filter Replacement

Procedure for replacing the unit's air filter.

Over Heat Alarm Testing

Procedure for testing the unit's over heat alarm functionality.

Over Heat Alarm Thermostat Adjustment

Guide on adjusting the over heat alarm thermostat to meet specifications.

Normal Operating Temperature Testing

How to test normal operating temperatures for HIGH, MED, and LOW settings.

Normal Operating Temperature Adjustment

Procedure for adjusting the unit's normal operating temperature settings.

Technical Specifications

Details physical, electrical characteristics, and operating temperatures of the unit.

Key to Exploded Drawing

Provides a numbered list of components referenced in the exploded drawing.

Returning Units for Service

Guidelines for packaging and shipping the warming unit for repair or service.

Troubleshooting and Reference

Diagnosing Common Unit Problems

Solutions for issues like unit failure, lack of heat, inconsistent heating, and alarms.

Understanding Device Symbols

Explains the meaning of various symbols used on the unit and within the manual.

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