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Ranger 245 - Service Manual

Ranger 245
18 pages
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Initial Equipment Check
ñ Make sure the Ranger unit’s power cord is plugged into the unit.
ñ When checking for grounding, clamp to the screw threads on the unit’s I.V. pole
clamp or the equipotential stud on the rear of unit. Clamp should be tightened
securely.
ñ Sometime during shipping, this unit may have been exposed to extreme
temperatures. The unit may need a period of 20 minutes or more to return to
normal operating temperature. Store the Ranger unit at room temperature,
allowing it to equilibrate, before using or testing the unit.
Service Manual
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Model 247
Irrigation Warming System
Not for I.V. Use
Model 245
Blood/Fluid Warming System
For I.V. Use
®
*
®
Fluid Warming SystemFluid Warming System
Check the Ranger system website to ensure you have the most recent version of this document. www.rangerfluidwarming.com reorder #247021A

Table of Contents

Questions and Answers

  • A
    Aaron SmallJul 27, 2025
    Why does the Ranger Food Warmer alarm sound and display 'HI'?
    • N
      nmillsJul 28, 2025
      The alarm sounds and the alphanumeric display flashes a temperature of 43°C (Model 245) or 48°C (Model 247) or higher, along with the word “HI,” due to a temporary over-temperature condition. This can be caused by: * An extreme change in flow rates. * Turning the unit on before inserting the warming cassette. * Using fluids prewarmed above 42°C. To resolve this, open the flow to reduce the temperature. The alarm will stop when the display reads 41°C, indicating the unit is ready for use.
  • G
    gary39Aug 1, 2025
    What to do if the Ranger 245 Food Warmer alarm sounds, and the alphanumeric display and alarm indicator light go dark?
    • C
      Christopher MurrayAug 2, 2025
      If the alarm sounds, and the alphanumeric display and alarm indicator light go dark, it could be due to primary controller failure, meaning the unit will no longer operate. In this case, you should call Arizant Healthcare Inc. Technical Service.
  • J
    jennifer10Aug 7, 2025
    What to do if the Ranger Food Warmer alarm sounds and the alphanumeric display flashes 'LO'?
    • N
      Nathan PalmerAug 7, 2025
      If the alarm indicator light illuminates, the alarm sounds, and the alphanumeric display alternately flashes a temperature of 33°C or below along with the word “LO,” the alarm should stop when the temperature rises above 33°C. If the alarm continues, unplug the unit, discontinue use, and call Arizant Healthcare Inc. Technical Service.
  • W
    William GarrisonAug 11, 2025
    What to do if the Ranger 245 Food Warmer alarm sounds, alphanumeric display and alarm indicator light go dark?
    • A
      April WilliamsAug 11, 2025
      If the alarm sounds, the alphanumeric display and alarm indicator light go dark, turn off the unit, discontinue the infusion of fluids, and do not warm fluids before infusing them through the Ranger unit.
  • C
    Christopher WolfeAug 17, 2025
    What to do if the Ranger Food Warmer alphanumeric display reads 'Er 5' or 'Open'?
    • D
      David BryantAug 17, 2025
      If the alphanumeric display reads “Er 5” or “Open,” remove the unit and refer to a biomedical technician or call Arizant Healthcare Inc. Technical Service.
  • W
    wdavisAug 21, 2025
    What to do if the Ranger 245 Food Warmer alphanumeric display reads 'Er 4' or 'Open'?
    • M
      Michael WattsAug 21, 2025
      If the alphanumeric display reads “Er 4” or “Open,” do not use the unit and call Arizant Healthcare Inc. Technical Service.

Summary

Initial Equipment Check

Technical Service and Order Placement

Technical Service Contacts

In-warranty Repair and Exchange Process

Introduction to Ranger Warming Systems

Critical Warnings and Precautions

Critical safety information including hazards and necessary precautions during operation.

Maintenance and Storage Guidelines

Servicing Information and Support

Model 245 Preventative Maintenance Checklist

Model 245 Test Setup

Model 245 Operating Temperature Test

Procedure to test the operating temperature of the Model 245 unit.

Model 245 Over-temperature Alarm Test

Procedure to test the 43°C and 46°C over-temperature alarm points for Model 245.

Model 247 Preventative Maintenance Checklist

Model 247 Test Setup

Model 247 Operating Temperature Test

Procedure to test the operating temperature of the Model 247 unit.

Model 247 Over-temperature Alarm Test

Procedure to test the 48°C and 50°C over-temperature alarm points for Model 247.

Replacing the Power Fuse

Fuse Replacement Tools and Method

Troubleshooting Common Issues

No Panel Illumination Troubleshooting

Troubleshooting steps when the warming unit panel shows no lights.

Over-Temperature Alarm Troubleshooting

Resolving alarms related to over-temperature conditions (43°C/48°C).

Alarm and Display Failure Troubleshooting

Unit Alarms on Plug-in Troubleshooting

Diagnosing alarms that occur immediately after plugging in the unit.

Alarm After Unit Off Troubleshooting

Cassette Removal Troubleshooting

Under-Temperature Alarm Troubleshooting

Resolving alarms related to under-temperature conditions (33°C).

Display Error Code Troubleshooting

System Specifications

Ranger 245 Specifications

General IconGeneral
BrandRanger
Model245
CategoryFood Warmer
LanguageEnglish