OPERATION AND TECHNICAL MANUAL - 57299 - Rev. I

Sep 29, 2026

Operation and Technical Manual for the Gentherm Medical BLANKETROL III Model 233 hyper-hypothermia system, covering symbol definitions, controls for temperature set and adjustment modes (automatic/manual), and key operational indicators. The manual provides detailed safety warnings emphasizing physician orders, frequent patient temperature and skin checks, risks of burns/frostbite from inappropriate limits, electrical shock and power handling precautions, static electricity/ESD requirements, and sanitation guidance to prevent contamination and patient injury.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages122

Reading Time5 h 7 min

AccessFree to download

Symbol Definitions

Temperature Set and Control Modes

Safety Warnings and Handling Precautions

Power, ESD, and Disposal Symbols

Patient Contact and Sanitation Guidance

Operation and Technical Manual Model 233 Hyper-Hypothermia System Gentherm Medical, LLC • 12011 Mosteller Road • Cincinnati, Ohio 45241, U.S.A. [www.gentherm.com](www.gentherm.com) BLANKETROL® is a registered trademark of Gentherm Medical, LLC, Cincinnati, Ohio USA. ©Copyright 2022, Gentherm Medical, LLC All rights reserved. Manual 57299 Rev. I Symbol Definitions Read Operation Instructions and Manual Before Operating Temperature Set 10C Gradient 10˚ C V Gradient Variable |
INCREMENT (Increase Temperature) |
DECREMENT (Decrease Temperature) |
Automatic Control |
Manual Control |
5C | | --- | --- | --- | --- | --- | | | | | | Smart Mode | |
Only |
Test Indicators |
Water Temperature |
Patient Temperature |
Silence Alarm | Inlet Water Flow Indicator Fill to Strainer Low Water Level Risk of Explosion: Do not use in the Presence of Flammable Anesthetics Disconnect Power Before Servicing Danger; Risk of Electric Shock Power Failure ESD Susceptibility Separate Disposal for Electrical / Electronic Equipment Power Cord Holder O / I OFF / ON Switch OFF/ON OFF / ON Switch Equipotential Symbol ~ AC Voltage USB Port: Insert Port in This Direction BLANKETROL® III OPERATION AND TECHNICAL MANUAL Gentherm Medical, LLC, reserves the right to make equipment changes and improvements, which may not be reflected in this manual | WARNING | | --- | | • A physician’s order is required for setting blanket temperature and use of equipment. At least every 20 minutes, or as directed by physician, check patient's temperature and skin integrity of areas in contact with blanket; also, check the BLANKETROL III’s water temperature. Pediatric patients, temperature-sensitive patients with vascular disease, surgical patients, diabetics and patients with Raynaud’s Disease are at greater risk for developing tissue injuries, and this should be considered when selecting the temperature, duration of therapy and frequency of skin checks. Notify the physician promptly of any change in patient status in order to avoid serious injury or death. | | • The method of temperature control provided by all hyper-hypothermia units presents the danger of heating or cooling body tissues, particularly the skin, to a point where they are injured, i.e. , burns or frostbite, respectively. The clinician is responsible for determining the appropriateness of the temperature limits in dependency to time. Exceeding 40°C water temperature for extended periods can cause tissue damage and burns. Clinical judgment should be used to determine the safe maximum contact periods based on patient age, clinical condition, and current medications. Depending on the extent and severity of a burn, very serious and even fatal complications may arise. | | • Do not use the BLANKETROL III System distal to arterial cross clamping. Thermal injury may result. | | • Thermal injury may occur if heating/cooling therapy is applied to ischemic limbs. | | • The warming of transdermal medications (patches) can increase drug delivery, resulting in possible injury to the patient. | | • Prevent excessive and/or prolonged tissue pressure and shearing forces, especially over bony prominences. Failure to do so may result in tissue injury. | | • Do not place additional heat sources between the patient and blanket. Tissue damage may result. | | • Means to maintain contact between the patient and the blanket during therapy may be required and should not block the fluid pathways of the blanket or connecting hose. Failure to do so may result in inadequate treatment. | | • Prep solutions have been reported to injure the skin when allowed to remain between patients and a water-circulating heating blanket during prolonged procedures. Use of materials of good thermal conductivity, such as water, gel, and similar substances, with the BLANKETROL III not switched ON may decrease the temperature of the patient. The area between

FAQs

What physician-related requirements does the manual specify before setting blanket temperature or using the equipment?

A physician’s order is required for setting blanket temperature and use of the equipment. The manual also requires checking the patient’s temperature and skin integrity at least every 20 minutes or as directed by the physician.

What major patient-safety risks are highlighted in the warnings?

The manual warns that temperature control methods can heat or cool body tissues to injurious levels, causing burns or frostbite. It also notes higher risks for certain patient groups and warns to consider time, temperature limits, and skin-check frequency.

What electrical and static electricity precautions must staff follow?

The manual instructs disconnecting power before servicing, using proper grounding/discharging steps before connecting probes to prevent electrostatic discharge (ESD), and following warnings related to electric shock and power failure handling.

Sep 29, 2026

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