This manual includes operating and service instructions and unit specifications for the Model 775 temperature management unit. You can use the Model 775 temperature management unit in all clinical settings where forced-air warming is indicated.
Introduction
This Service Manual provides detailed instructions for the proper maintenance and servicing of the 3M Bair Hugger Model 775 Temperature Management Unit. It is intended for use by qualified biomedical engineers and service technicians who are familiar with the safe handling and repair of medical devices. This manual covers the unit’s description, operation, safety precautions, troubleshooting, and technical specifications. It is essential to follow all instructions and safety guidelines outlined in this manual to ensure the safe and effective operation of the Bair Hugger Model 775.
Description of the Total Temperature Management System
The 3M™ Bair Hugger™ brand Total Temperature Management system is a forced-air warming system designed to maintain or elevate a patient’s core body temperature. It comprises a Model 775 warming unit, which can be mounted on an optional rolling stand. The system also includes disposable components such as the Bair Hugger warming blanket, warming gown, or the 3M Ranger 241 blood/fluid warming set. The warming unit delivers warm air through a hose to the chosen disposable component, which then warms the patient. The system is commonly used in surgical settings, post-operative recovery, and other situations where patient warming is necessary.
Model 775 Warming Unit
The Bair Hugger Model 775 warming unit is a compact and user-friendly device that serves as the core of the Bair Hugger Total Temperature Management System. It houses the heating element, blower motor, control panel, and other critical components. The unit is designed to deliver warm air at a controlled temperature to a variety of disposable warming components, such as blankets, gowns, and fluid warming sets. The Model 775 features a user-friendly control panel that allows for easy adjustment of temperature settings, fan speed, and other parameters.
Service Manual Contents
This Bair Hugger Model 775 Service Manual is intended for qualified biomedical engineers and service technicians who are familiar with the safe repair and maintenance of medical devices. It provides comprehensive technical information, troubleshooting guides, and step-by-step instructions for servicing and maintaining the Model 775 temperature management unit. The manual includes sections covering safety precautions, proper use and maintenance, overview and operation, control panel overview, mounting instructions, temperature mode timer, general maintenance, technical service, order placement, specifications, electrical and physical characteristics, service requirements, and service manual availability.
Safety Precautions
This Bair Hugger Model 775 temperature management unit is a complex medical device that requires careful handling and adherence to strict safety protocols. It is crucial for service technicians to read and understand all safety precautions outlined in this manual before performing any maintenance or repairs. Always disconnect the unit from the power source before cleaning or working on any internal components. Wear appropriate personal protective equipment (PPE) when handling potentially hazardous materials or performing repairs. Never attempt to modify or alter the unit’s design or functionality without authorization from the manufacturer. Failure to follow these safety precautions could result in serious injury or death.
Proper Use and Maintenance
The Bair Hugger Model 775 temperature management unit is designed to operate safely and effectively only when used in accordance with the manufacturer’s instructions. Regular maintenance and cleaning are essential for ensuring optimal performance and extending the unit’s lifespan. Always use the recommended cleaning solutions and procedures provided in this manual. Avoid using harsh chemicals or abrasive materials that could damage the unit’s components. Regularly inspect the unit for signs of wear, tear, or damage. If any problems are detected, immediately contact the manufacturer or a qualified service technician for repair. Proper use and maintenance are crucial for ensuring the safety and effectiveness of this medical device.
Overview and Operation
The Bair Hugger Model 775 Temperature Management Unit is a forced-air warming system designed to maintain or elevate a patient’s core body temperature. It consists of a warming unit, a hose, and a disposable warming blanket or gown. The unit features a user-friendly control panel that allows for easy selection of temperature modes, fan speed, and other settings. Warm air is generated by the unit and delivered through the hose to the warming blanket or gown, providing gentle and effective warming to the patient. The unit automatically monitors and regulates the temperature, ensuring optimal patient comfort and safety. It incorporates safety features such as an over-temperature alarm and a thermal cutoff system to prevent overheating. The Bair Hugger Model 775 is a versatile and reliable tool for maintaining patient comfort and safety during various medical procedures.
Control Panel Overview
The Bair Hugger Model 775 Temperature Management Unit’s control panel is designed for intuitive operation and easy monitoring of the unit’s status. The panel features a clear alphanumeric display that shows the selected temperature mode, current temperature, and any alarms or error codes. It also houses buttons for selecting temperature modes, fan speed (high or low), and initiating a timer function. Indicator lights alert the user to the unit’s status, including power on, operating mode, and any faults or over-temperature conditions. A dedicated button allows for the selection of the desired temperature mode, enabling the user to choose from various preset options for maintaining or elevating the patient’s core body temperature. The fan speed button allows for adjustment of the airflow to optimize patient comfort and warming efficiency.
Mounting the Temperature Management Unit
The Bair Hugger Model 775 Temperature Management Unit is designed for secure and stable mounting to an IV pole. To prevent tipping and ensure patient safety, the unit should be clamped to the IV pole at a height that provides adequate stability. The manufacturer recommends clamping the unit no higher than 44 inches (112 cm) on an IV pole with a minimum 28-inch (71 cm) diameter wheelbase. Failure to adhere to these recommendations may result in the IV pole tipping, potential catheter site trauma, and potential patient injury. The unit’s mounting design allows for easy adjustment of the height and angle, ensuring optimal positioning for patient care. The secure clamping mechanism provides a stable platform, preventing the unit from dislodging during patient movement or handling.
Instructions for Use
To operate the Bair Hugger Model 775 Temperature Management Unit, ensure it is connected to a properly grounded power source. The unit automatically performs a power-on-reset operation and enters Standby mode. Select the desired temperature mode (e.g., Target Temperature, Ambient, or Standby) using the control panel buttons. Adjust the fan speed setting by pressing the corresponding button for high or low fan settings. The unit’s intuitive controls allow for easy selection of temperature settings and fan speed adjustments. The unit’s display provides real-time feedback on the selected settings and operating status. The temperature mode timer records the duration of operation in the selected mode, resetting with each mode change. During operation, monitor the unit’s performance and adjust settings as needed to maintain the desired patient temperature.
Temperature Mode Timer
The Bair Hugger Model 775 Temperature Management Unit features a built-in timer that accurately tracks the duration of operation in the selected temperature mode. This timer is a valuable tool for monitoring the total time the unit has been active in a specific mode, providing insights into treatment duration and potential adjustments. The timer displays the accumulated time in hours and minutes. Each time a new temperature mode is selected, the timer automatically resets, starting a fresh count for the newly chosen mode. This ensures precise tracking of time spent in each temperature mode, allowing for more informed treatment decisions and efficient monitoring of patient warming.
General Maintenance
Maintaining the Bair Hugger Model 775 Temperature Management Unit is crucial for ensuring its safe and effective operation. Before cleaning, always disconnect the unit from the power source. To clean the cabinet and external hose, use a damp, soft cloth along with a mild detergent or antimicrobial spray. Thoroughly dry the unit with a separate soft cloth. Avoid using harsh chemicals or abrasive cleaning agents as they can damage the unit’s surfaces. Regular cleaning helps maintain the unit’s hygiene and prevents the buildup of dirt or contaminants that could affect its functionality.
Technical Service and Order Placement
If your Bair Hugger Model 775 Temperature Management Unit requires factory service, contact Arizant Healthcare customer service. A customer service representative will provide you with a Return Authorization (RA) number. This number is essential for all correspondence related to your temperature management unit. The RA number helps expedite the service process and ensures that your unit is properly identified and handled. For in-warranty repairs and exchanges, Arizant Healthcare will assist you with the necessary arrangements. They will guide you through the return process, providing clear instructions and support.
Specifications
The Bair Hugger Model 775 Temperature Management Unit has a number of important specifications that ensure its safe and effective operation. These include the following⁚ Over-temperature protection is a critical safety feature. If the unit reaches a temperature of 56°C (133°F), a red Over-temp indicator light flashes, an alarm sounds, and the heater and blower shut down. The operating indicator lights turn off, and the control panel becomes unresponsive. Fault protection is another essential safety feature. If the unit detects a fault, an amber Fault indicator light flashes, and an alarm sounds. The unit also has dual input fused lines for overcurrent protection, ensuring that electrical surges do not damage the unit or pose a safety risk.
Electrical Characteristics
The Bair Hugger Model 775 Temperature Management Unit is designed to operate safely and reliably within specific electrical parameters. The heating element has a power rating of 1400 watts, providing sufficient heat output for effective warming. The resistive leakage current meets the requirements of both UL 60601-1 and IEC 60601-1 standards, ensuring patient safety. The blower motor operates at two speeds⁚ 4,700 rpm for the high fan setting and 4,100 rpm for the low fan setting. This allows for adjustable airflow, ranging up to 48 cubic feet per minute (cfm) or 23 liters per second (L/s). The unit’s power consumption is typically 800 watts, though it can reach a peak of 1550 watts. These electrical characteristics are essential for the proper functioning of the Bair Hugger Model 775 Temperature Management Unit and ensure a safe and effective warming experience for patients.
Physical Characteristics
The Bair Hugger Model 775 Temperature Management Unit has a compact and sturdy design, making it suitable for a variety of clinical settings. Its dimensions are 13 inches high, 13 inches deep, and 14 inches wide, equivalent to 33 centimeters high, 33 centimeters deep, and 36 centimeters wide. The unit weighs 16 pounds (7.3 kilograms), providing a balance between portability and stability. The noise level generated by the unit varies depending on the fan setting. With the high fan setting, the noise level is 53 dBA, while the low fan setting produces a quieter 48 dBA. The included hose is flexible and compatible with the Bair Hugger brand 241 forced-air warming blanket, ensuring a secure and comfortable connection. These physical characteristics contribute to the unit’s ease of use, transport, and integration within a healthcare environment.
Service Requirements
All repair, calibration, and servicing of the Bair Hugger Model 775 temperature management unit require the skill of a qualified, medical equipment service technician who is familiar with good practice for medical device repair. This ensures that the unit is handled and maintained in a way that preserves its safety and effectiveness. If service does not require the manufacturer’s attention, the Model 775 Service Manual provides the technical information and instructions needed for a qualified technician to perform the necessary procedures. Arizant Healthcare provides customer service support for in-warranty repairs and exchanges, assisting users in obtaining the appropriate authorization and guidance for addressing any issues that may arise with the unit. Following the recommended service procedures and relying on the expertise of qualified technicians is crucial for maintaining the integrity and proper functioning of the Bair Hugger Model 775 temperature management unit.
Service Manual Availability
The service manual for the Bair Hugger Model 775 Temperature Management Unit is available in English, German, and French. It provides detailed instructions for servicing and maintaining the unit, covering topics such as calibrating sensors, testing safety systems, replacing filters and hoses, and clearing fault codes. The manual is available through 3M Bair Hugger’s website, ensuring that healthcare professionals have access to the latest version and information. It is important to refer to the website regularly to ensure you have the most up-to-date version of the document, as updates and revisions may be made periodically. The availability of the service manual in multiple languages allows for wider access and understanding of the maintenance procedures for the Bair Hugger Model 775, contributing to its safe and effective operation across various healthcare settings.