3M Ranger 245 User manual

3
Ranger™
Model 245
Blood/Fluid Warming System
For I.V. Use
3
Ranger™
Model 247
Irrigation Fluid Warming System
Not for I.V. Use
1 Model 245 • Blood/Fluid Warming System
• For I.V. Use
1 Model 247 • Irrigation Fluid Warming System
• Not for I.V. Use
3 Modell 245 • Blut- und Infusionswärmesystem
• Für intravenöse Anwendungen
3 Modell 247 • Spülflüssigkeit-Erwärmungssystem
• Nicht zum intravenösen Gebrauch
2 Modèle 245 • Système de réchauffement de
sang/soluté • Pour perfusion I.V
2 Modèle 247 • Système de réchauffement de liquide
d’irrigation • Ne pas utiliser pour une perfusion I.V
Service Manual 2
Manuel d’entretien 23
Service-Handbuch 45

Table of Contents
Technical Service and Order Placement ������������������������������������������������������ 3
Technical Service ����������������������������������������������������������������� ��� 3
Order Placement ������������������������������������������������������������������ ��� 3
In-warranty Repair and Exchange ������������������������������������������������������ 3
When You Call for Technical Support ��������������������������������������������������� 3
Initial Equipment Check �������������������������������������������������������������������� 4
Introduction ������������������������������������������������������������������������������� 4
Model 245 Blood/Fluid Warming System������������������������������������������������ 4
Model 247 Irrigation Warming System �������������������������������������������������� 4
Indications for Use �������������������������������������������������������������������� 4
Warnings and Cautions ��������������������������������������������������������������� 5
Before Servicing Equipment ����������������������������������������������������������� 5
Product Description ������������������������������������������������������������������������ 6
Ranger Warming Unit ����������������������������������������������������������������� 6
Ranger Models 245 and 247 ����������������������������������������������������������������� 7
Maintenance and Storage ������������������������������������������������������������������� 8
Model 245 Blood/Fluid Warming System Preventative Maintenance Checklist ����������������� 10
Ranger Model 245 Maintenance Log �������������������������������������������������������� 13
Model 247 Irrigation Fluid Warming System Preventative Maintenance Checklist ��������������� 14
Ranger Model 247 Maintenance Log �������������������������������������������������������� 16
Replacing the Power Fuse ������������������������������������������������������������������ 17
Troubleshooting �������������������������������������������������������������������������� 18
Specications ����������������������������������������������������������������������������� 20
Denition of Symbols ��������������������������������������������������������������������� 21

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Ranger Blood and Fluid Warming Systems
Technical Service and Order Placement
Technical Service
Arizant Healthcare Inc.
TEL: [phone]
[phone]
FAX: [phone]
Arizant UK Limited
TEL: [phone]
FAX: [phone]
Arizant Deutschland, GmbH
TEL: [phone]
FAX: [phone]
Arizant France, SAS
TEL: [phone]
Indigo (in France only): 0 820 33 90 40
FAX: [phone]
Order PlacemenT
usa
TEL: [phone]
[phone]
FAX: [phone]
[phone]
in-warranTy rePair and exchange
Replacement parts to correct a problem are delivered at no charge� To return a device to Arizant
Healthcare Inc� for service, rst obtain a Return Authorization (RA) number from a customer service
representative� Please use the (RA) number on all correspondence when returning a device for service�
A shipping carton will be delivered to you at no charge, if needed� We will service and ship your device
within ve (5) working days of our receipt� Call your local supplier or sales representative to inquire
about a loaner device while your device is being serviced�
when yOu call fOr Technical SuPPOrT
Remember, we will need to know the serial number of your unit when you call us� e serial number
label is located on the bottom of the warming unit�

Ranger Blood and Fluid Warming Systems
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Arizant Healthcare Inc.
Initial Equipment Check
• Make sure the 3MTM RangerTM unit’s power cord is plugged into the unit�
• 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 the unit� Clamp should be tightened securely�
• Sometime during shipping, this unit may have been exposed to extreme temperatures� e 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�
Introduction
e Ranger warming system includes a warming unit and a disposable administration set� e
Ranger warming unit is designed to be mounted to an I�V� pole� A handle located on the top of
the unit makes transport easy� When mounted to the I�V� pole, the unit ts easily above the 3MTM
Bair HuggerTM 500 or 700 series warming unit�
mOdel 245 BlOOd/fluid warming SySTem
e Ranger blood/uid warming system is designed to warm blood, blood products, and liquids and
deliver these at ow rates from KVO to 500 mL/min� At these ow rates, the device maintains uid
output temperatures ranging from 33°C to 41°C (Note: is is for room temperature uids only)� It
takes less than two minutes to warm up to the 41°C ±1 set point temperature� e alarm points on the
Model 245 are 43°C ±1 and 46°C [+3, -2°C]�
Disposable blood/uid sets are available for standard ow, high ow, and pediatric applications�
Disposable sets are sterile, latex-free, single-use-only items and are designed to be used with the
reusable warming unit� Do not use other disposable sets with the Model 245, including those
designed for the Model 247 irrigation warming system�
mOdel 247 irrigaTiOn warming SySTem
e Ranger irrigation warming system is designed to warm irrigation uids and deliver these
at ow rates from 0 to 865 mL/min when the bag is hung 100 cm above the scope� At these ow
rates, the device maintains uid output temperatures ranging from 33°C to 41°C (Note: is is for
room temperature uids only)� It takes less than two minutes to warm up to the 41°C ±1 set point
temperature� e alarm points on the Model 247 are 48°C (±2) and 50°C (±2)�
e Ranger irrigation uid warming disposable set is sterile, latex-free, and is designed to be used
with the reusable Ranger irrigation uid warming unit� Do not use other disposable sets with the
Model 247, including those designed for the Model 245 blood/uid warming system�
indicaTiOnS fOr uSe
Blood/Fluid Warming SyStem
e Ranger blood/uid warming system is intended to warm blood, blood products, and liquids�
irrigation Fluid Warming SyStem
e Ranger irrigation uid warming system is intended to warm irrigation uids�

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warningS and cauTiOnS
Warning
• Electrical shock hazard� Do not open the warming unit case�
• Do not substitute other devices for the Ranger warming unit or Ranger disposable sets� ermal or
electrical injury or device damage may occur�
• Never infuse uids if air bubbles are present in the uid line as air embolism may result (Model 245
only)�
• Do not continue use of the unit if the over-temperature alarm continues to sound and the
temperature does not return to the set point temperature� Immediately stop uid ow and discard
the disposable set� Have the warming unit tested by a biomedical technician or call Arizant
Healthcare Inc� Technical Service�
• Equipment not suitable for use in the presence of a ammable anaesthetic mixture with air or with
oxygen or nitrous oxide�
caution
• Model 247 is not for I�V� use�
• Do not immerse the uid warming unit in liquids� Wipe with a clean, slightly damp cloth�
• To prevent tipping, clamp the Ranger warming unit to an I�V� pole with a minimum 14" (35�6 cm)
radius wheelbase and at a height no higher than 44" (112 cm)� Failure to do so may result in damage
to the product or catheter site trauma�
noticeS
• Federal law (USA) restricts this device to sale by or on the order of a licensed healthcare
professional�
• To reliably ground the Ranger irrigation warming system, only connect to receptacles marked
“Hospital Only” or “Hospital Grade”�
BefOre Servicing equiPmenT
All repair, calibration, and servicing of this equipment must be performed by Arizant Healthcare
Inc� or an authorized service technician� Arizant Healthcare Inc� assumes no responsibility for the
reliability, performance, or safety of the equipment if:
• Modications or repairs are performed by unauthorized personnel�
• e equipment is used in a manner other than that described in the operator’s manual�
• e equipment is installed in an environment that does not meet the appropriate electrical and
grounding requirements�

Ranger Blood and Fluid Warming Systems
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Arizant Healthcare Inc.
Product Description
e Ranger uid warming systems consist of a warming unit and a sterile disposable uid
warming cassette�
Alarm indicator
light
Slot for
warming
cassette
Alphanumeric
display
Power switch
I.V. pole clamp
Bubble trap holder
model 245
Alarm indicator
light
Slot for
warming
cassette
Alphanumeric display Power switch
I.V. pole clamp
model 247
ranger warming uniT
e warming unit is a compact, lightweight, liquid-resistant device with a clamp located on the side
for attachment to an I�V� pole� A carrying handle on the top of the unit makes it easy to transport�
Located on the front panel you will nd:
• Alphanumeric display that indicates the heater temperature during normal operation� In an over-
temperature condition, the display alternately ashes a temperature of 43°C for the Model 245
(48°C for the Model 247) or higher and the word “HI�” In an under-temperature condition, the
display alternately ashes a temperature of 33˚C or lower and the word “LO�”
• Alarm indicator light that comes on when either an over- or under-temperature condition occurs�

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Ranger Blood and Fluid Warming Systems
Ranger Models 245 and 247
3.
1.
5.
11.
19.
13.
9.
10.
4.
6.
8.
7.
17.
20.
12.
14.
15.
21.
16.
2.
18.
1� Upper Enclosure
2� Lower Enclosure
3� Upper Heater
4� Lower Heater
5� Upper Heater Plate
6� Lower Heater Plate
7� RTD Sensor
8� ermistor Sensor
9� Pole Clamp
10� Pole Clamp Knob
11� Bubble Trap Holder
(Model 245)
12� Power Entry Module
13� Cord Retainer
14� Solid State Relay
15� Microswitch
16� Alarm Board
17� Controller
18� Handle
19� Cable Clamp
20� Ground Plane
21� Heat Sink

Ranger Blood and Fluid Warming Systems
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Arizant Healthcare Inc.
Maintenance and Storage
Cleaning the RangeR WaRming unit
Clean the Ranger warming unit on an as-needed basis�
caution
• Do not immerse the warming unit in cleaning or sterilizing solutions� e unit is not liquid-proof�
• Do not clean the warming unit with solvents or damage to the case, label, and internal components
may result�
to Clean the exteRioR of the WaRming unit:
1� Disconnect the Ranger warming unit from the power source�
2� Wipe the outside of the unit with warm, soapy water, nonabrasive cleaning solutions, dilute
bleach, or cold sterilants� Do not use abrasive materials�
3� Wipe with a dry, so cloth�
to Clean the heating Plates:
e Ranger cleaning tool (part #90030) is intended to clean both heating plates of the warming unit�
It is not necessary to disassemble the warming unit to use the tool�
caution
• Do not insert metallic instruments in the warming unit, as damage to the heating plates may
occur�
• Do not use abrasive material or solutions to clean the heater plates�
• Do not allow spills to dry inside the unit, as this may make it more dicult to clean the unit�
• e cleaning tool provides only supercial cleaning—it does not disinfect or sterilize the interior of
the unit�

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Ranger Blood and Fluid Warming Systems
method
1� Unplug the warming unit�
2� Unfold the cleaning tool� Wet the foam
pads with a nonabrasive solution, such as
AlconoxTM brand detergent�
3� Insert the tool from the back of the unit
and pull the tool all the way out from the
front�
4� Rinse the tool with water and repeat 3 times� Discard the tool according to institutional protocol�
5� Wipe o the unit to remove excess uid�
to clean reSiStant, dried-on FluidS:
1� Spray a nonabrasive solution inside the slot of the warming unit and let sit for 15-20 minutes�
2� Clean the unit by using the cleaning tool�
NOTE: You may use a nonmetal instrument, such as a cotton swab, to clean the upper channels� If you
are unable to adequately clean the unit, call Arizant Healthcare Inc� Technical Service�
stoRage
Store all components in a cool, dry place when not in use�
seRviCing
ere are no user-serviceable parts in the Ranger warming unit� All service must be performed by
Arizant Healthcare Inc� or an authorized service technician�
Call Arizant Healthcare Inc. Technical Service at 800-733-7775 or 952-947-1200 for service
information.
Alconox is a trademark of Alconox, Inc�

Ranger Blood and Fluid Warming Systems
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Arizant Healthcare Inc.
Model 245 Blood/Fluid Warming System
Preventative Maintenance Checklist
caution
Temperature adjustments cannot be made to the Ranger warming unit� If the test shows the
temperature is out of specication, please call Arizant Healthcare Inc� Technical Support at
1-800-733-7775�
toolS and equipment
• ermocouple: 0�005" lead or smaller (part #90020)
• Calibrated thermocouple temperature monitor
• Aluminum tape
• Ranger standard ow warming set
• Phillips screwdriver
• Saline/water
0.75" 1.80" Thermocouple
Inlet tube
Aluminum tape
Drain 2mL or more
from cassette to remove.
Insert cassette
before priming.
Fig. 1: Ranger standard fluid warming cassette
Model 245

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Ranger Blood and Fluid Warming Systems
1� Use aluminum tape to ax a thermocouple
to the top surface of the Ranger warming
cassette as shown in Figure 1�
2� Slide the warming cassette into the slot of
the Ranger warming unit�
3� Using room temperature saline/water, prime
the cassette per instructions included with it�
note: To achieve correct results, uids must
be administered into the inlet tube, NOT
into the outlet tube�
4� Close patient line with white clamp to stop
ow�
5� Turn the Ranger unit ON and allow it to
warm up for 5 minutes�
6� e Ranger unit display should read 41°C±1�
Note the temperature on the thermocouple
temperature monitor� If the temperature
reading is not 41°C±1, call Arizant
Healthcare Inc� Technical Support�
note: Most handheld temperature meters
have a ±1°C tolerance�
Fig. 2: Ranger standard flow warming set
Blue
clamp
Fluid
source
White
clamp
Roller
clamp
Bubble
trap
Exit
Outlet
tube
Inlet
tube
Fluid
warming
cassette
Model 245

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Arizant Healthcare Inc.
testing the oveR-temPeRatuRe alaRm Points (43°C [±1] and 46°C [+3, -2])
e over-temperature alarm test causes the Ranger unit to go into an over-temperature test mode by
manually overriding the primary control system and engaging the heaters� e Ranger system is very
responsive to heater input; therefore the test procedures are technique sensitive� Read instructions
thoroughly before beginning these tests�
e rst alarm point at 43°C (±1) alerts user to the rise in temperature (see step 7)� At the
46°C (+3, -2) secondary alarm set point, the unit cuts power to the heaters (see step 8)� Please note that
due to the heaters’ rapid response, you may see temperature readings dri within the range of
44-49°C�
7� Loosen the over-temperature screw on the
bottom of the Ranger unit (see Fig� 3)� Listen
for a slight click as the microswitch opens�
Loosen ½ turn more. is unit is now
in over-temperature test mode, and the
temperature output of the unit should begin
to rise� When the Ranger display reads 43°C,
verify that an audible alarm sounds, the alarm
light illuminates, and the display alternately
ashes “HI” and the plate temperature�
8� Listen for the power relay to click at
46°C (+3, -2) (you can feel the click when holding the lower le corner of the unit as you face
the front display)� e click signies the secondary alarm trip point and signals that power to
the heaters has been shut o� e over-temperature alarm sounds, the alarm light illuminates,
and the alphanumeric display alternately reads “HI” and the plate temperature� Watch the
thermocouple temperature monitor to determine the unit’s peak temperature output (less than
1 minute)� e temperature reading on the monitor should peak at 46°C (+3, -2)�
note: If the temperature displayed on the thermocouple monitor exceeds 49°C during the test, tighten
the over-temperature test screw on the bottom of the Ranger unit, unplug it, and run cold uids
through the warming cassette� is returns the unit to normal operating temperature� Call
Arizant Healthcare Inc� Technical Support�
9� e secondary alarm is designed to latch� Verify this feature by momentarily turning o the
power switch, then turning it on again� e Ranger unit should continue alarming throughout
this sequence�
10� Securely tighten the over-temperature screw, turn o the Ranger unit, and unplug the unit�
Once power is cut to the Ranger unit, the alarm will cease� e unit is ready to return to service
aer it cools to normal operating temperature (approximately 20-30 minutes)�
Fig. 3: Ranger over-temperature screw
Over-temperature
screw
Model 245

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247021E English
Ranger Blood and Fluid Warming Systems
Ranger Model 245 Maintenance Log
The operating temperature and alarms should be tested at least every 6 months or according
to institutional protocol.
maintenanCe aCtion PeRfoRmed
model ___________ sn ________
Date _________ Operating temperature: (Specication = 41°C±1) ______°C
Over-temperature alarm points:
Audible (43°C [±1] on Ranger unit display) ______°C
Secondary (46°C [+3, -2]) ______°C
Date _________ Operating temperature: (Specication = 41°C±1) ______°C
Over-temperature alarm points:
Audible (43°C [±1] on Ranger unit display) ______°C
Secondary (46°C [+3, -2]) ______°C
Date _________ Operating temperature: (Specication = 41°C±1) ______°C
Over-temperature alarm points:
Audible (43°C [±1] on Ranger unit display) ______°C
Secondary (46°C [+3, -2]) ______°C
Date _________ Operating temperature: (Specication = 41°C±1) ______°C
Over-temperature alarm points:
Audible (43°C [±1] on Ranger unit display) ______°C
Secondary (46°C [+3, -2]) ______°C
Date _________ Operating temperature: (Specication = 41°C±1) ______°C
Over-temperature alarm points:
Audible (43°C [±1] on Ranger unit display) ______°C
Secondary (46°C [+3, -2]) ______°C
Date _________ Operating temperature: (Specication = 41°C±1) ______°C
Over-temperature alarm points:
Audible (43°C [±1] on Ranger unit display) ______°C
Secondary (46°C [+3, -2]) ______°C
Model 245

Ranger Blood and Fluid Warming Systems
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Arizant Healthcare Inc.
Model 247 Irrigation Fluid Warming System Preventative
Maintenance Checklist
caution
Temperature adjustments cannot be made to the Ranger irrigation warming unit� If the test shows
the temperature is out of specication, please call Arizant Healthcare Inc� Technical Support at
1-800-733-7775�
toolS and equipment
• ermocouple: 0�005" lead or smaller
(part #90020)
• Calibrated thermocouple temperature monitor
• Aluminum tape
• Ranger irrigation warming set
• Phillips screwdriver
• Saline/water
1� Use aluminum tape to ax a thermocouple
to the top surface of the Ranger irrigation
warming cassette as shown in Fig� 1�
2� Slide the warming cassette into the slot of the Ranger irrigation warming unit�
3� Using room temperature
saline/water, prime the
cassette per instructions
included with it�
note: To achieve correct results,
uids must be administered
into the inlet tube, NOT into
the outlet tube�
4� Close patient line with white
clamp to stop ow�
5� Turn the Ranger irrigation
unit ON and allow it to warm
up for 5 minutes�
6� e Ranger irrigation unit
display should read 41°C±1�
Note the temperature on the
thermocouple temperature
monitor� If the temperature
reading is not 41°C±1, call
Arizant Healthcare Inc�
Technical Support�
note: Most handheld
temperature meters have a ±1°C tolerance�
Fig. 1: Ranger irrigation fluid warming cassette
0.75" 8.50"
Thermocouple
Inlet tube
Aluminum tape
Irrigat ion Fluid Warming
Drain 2mL or mo re
from casse tte to remove.
Insert ca ssette
before pr iming.
M od e l 24 7
Fig. 2: Ranger irrigation fluid warming set
Exit
White
clamp
Blue clamp
Fluid source
Fluid
warming
cassette
Inlet tube
Outlet tube
Model 247

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Ranger Blood and Fluid Warming Systems
testing the oveR-temPeRatuRe alaRm Points (48°C [±2] and 50°C [±2])
e over-temperature alarm test causes the Ranger irrigation unit to go into an over-temperature
test mode by manually overriding the primary control system and engaging the heaters� e Ranger
irrigation system is very responsive to heater input; therefore the test procedures are technique
sensitive� Read instructions thoroughly before beginning these tests�
e rst alarm point at 48°C (±2) alerts user to the rise in temperature (see step 7)� At the
50°C (±2) secondary alarm set point, the unit cuts power to the heaters (see step 8)�
7� Loosen the over-temperature
screw on the bottom of the Ranger
irrigation unit (see Fig� 3)� Listen for a
slight click as the microswitch opens�
Loosen ½ turn more. is unit is
now in over-temperature test mode,
and the temperature output of the
unit should begin to rise� When the
Ranger display reads 48°C, verify that
an audible alarm sounds, the alarm
light illuminates, and the display
alternately ashes “HI” and the plate
temperature�
8� Listen for the power relay to click at 50°C (±2) (you can feel the click when holding the lower
le corner of the unit as you face the front display)� e click signies the secondary alarm
trip point and signals that power to the heaters has been shut o� e over-temperature alarm
sounds, the alarm light illuminates, and the alphanumeric display alternately reads “HI” and the
plate temperature� Watch the thermocouple temperature monitor to determine the unit’s peak
temperature output (less than 1 minute)� e temperature reading on the monitor should peak at
50°C (±2)�
note: If the temperature displayed on the thermocouple monitor exceeds 52°C during the test,
tighten the over-temperature test screw on the bottom of the Ranger irrigation unit, unplug it,
and run cold uids through the warming cassette� is returns the unit to normal operating
temperature� Call Arizant Healthcare Inc� Technical Support�
9� e secondary alarm is designed to latch� Verify this feature by momentarily turning o the
power switch, then turning it on again� e Ranger irrigation unit should continue alarming
throughout this sequence�
10� Securely tighten the over-temperature screw, turn o the Ranger irrigation unit, and unplug the
unit� Once power is cut to the Ranger irrigation unit, the alarm will cease� e unit is ready to
return to service aer it cools to normal operating temperature (approximately 20-30 minutes)�
Fig. 3: Ranger irrigation over-temperature screw
Over-temperature
screw
Model 247

Ranger Blood and Fluid Warming Systems
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16
Arizant Healthcare Inc.
Ranger Model 247 Maintenance Log
The operating temperature and alarms should be tested at least every 6 months or according
to institutional protocol.
maintenanCe aCtion PeRfoRmed
model ___________ sn _______
Date ________ Operating temperature: (Specication = 41°C±1) ______°C
Over-temperature alarm points:
Audible (48°C [±2] on Ranger unit display) ______°C
Secondary (50°C [±2]) ______°C
Date ________ Operating temperature: (Specication = 41°C±1) ______°C
Over-temperature alarm points:
Audible (48°C [±2] on Ranger unit display) ______°C
Secondary (50°C [±2]) ______°C
Date ________ Operating temperature: (Specication = 41°C±1) ______°C
Over-temperature alarm points:
Audible (48°C [±2] on Ranger unit display) ______°C
Secondary (50°C [±2]) ______°C
Date ________ Operating temperature: (Specication = 41°C±1) ______°C
Over-temperature alarm points:
Audible (48°C [±2] on Ranger unit display) ______°C
Secondary (50°C [±2]) ______°C
Date ________ Operating temperature: (Specication = 41°C±1) ______°C
Over-temperature alarm points:
Audible (48°C [±2] on Ranger unit display) ______°C
Secondary (50°C [±2]) ______°C
Date ________ Operating temperature: (Specication = 41°C±1) ______°C
Over-temperature alarm points:
Audible (48°C [±2] on Ranger unit display) ______°C
Secondary (50°C [±2]) ______°C
Model 247

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Replacing the Power Fuse
e power fuses are located in the power entry module�
tools and equiPment
Small slotted screwdriver
method
1� Disconnect the warming unit from the power source�
2� Remove the power cord�
3� Locate the fuse carrier in the power entry module�
4� Use the small screwdriver to remove the fuse carrier from the power entry module�
5� Remove the blown fuse from the fuse carrier and replace with a new fuse (as marked)�
6� Place the fuse carrier back into the power entry module�
7� Reattach the power cord�
8� Reconnect the warming unit to the power source�
9� Turn the unit on to verify normal operation�
10� Record the maintenance action taken�

Ranger Blood and Fluid Warming Systems
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Arizant Healthcare Inc.
Troubleshooting
CONDITION CAUSE SOLUTION
Nothing illuminates on the
warming unit panel�
• Unit is not turned on, plugged
in, or power cord is not plugged
into an appropriate outlet�
• Unit failure�
• Turn unit on� Make sure the power
cord is plugged into the power
entry module of the warming unit�
Make sure the warming unit is
plugged into a properly grounded
outlet�
• Check fuses�
• Call Arizant Healthcare Inc�
Technical Service�
CONDITION CAUSE SOLUTION
Alarm indicator illuminates and
alarm sounds, alphanumeric
display alternately ashes a
temperature of 43˚C for the Model
245 (48°C for the Model 247) or
higher and the word “HI�”
Temporary over-temperature
condition because:
• An extreme change in ow rates
occurred (e�g�, from 500 mL/min
to stop ow)�
• Unit was turned on and reached
set point temperature before
warming cassette was inserted�
• Fluids were prewarmed to above
42°C before being run through
the warming unit�
• Open ow to reduce temperature�
Alarms will stop when the display
reads 41°C� e unit is ready to
use�
• Alarms will stop when the display
reads 41°C� e unit is ready to
use�
• Turn o unit� Discontinue
infusion of uids� Do not warm
uids before infusing them
through the Ranger unit�
CONDITION CAUSE SOLUTION
Alarm sounds, alphanumeric
display and alarm indicator light
go dark�
Primary controller failure� Unit
will no longer operate�
Power to heating plates will shut
o if temperature rises to 44°C for
the Model 245 (50°C for the Model
247)� Turn unit o and unplug it�
Discontinue use of unit� Discard
disposable set� Alarm will continue
to sound if you do not unplug
unit� Call Arizant Healthcare Inc�
Technical Service�

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19
247021E English
Ranger Blood and Fluid Warming Systems
CONDITION CAUSE SOLUTION
• Unit alarms soon aer plugging it in
(unit does not have to be turned on
for this condition to occur)�
• Heater temperature rises to 44˚C for
Model 245 (50°C for Model 247) and
unit shuts down soon aer plugging
it in (unit does not have to be turned
on for this condition to occur)�
Over-temperature screw on
bottom of unit is loose or
missing�
Make sure over-temperature screw is
completely tightened� If it is missing,
turn unit o and unplug it� Call
Arizant Healthcare Inc� Technical
Service�
CONDITION CAUSE SOLUTION
Alarm sounds but unit has been
turned o�
• Independent backup safety
system has been activated�
• Over-temperature screw
loose�
Unplug unit� Call Arizant Healthcare
Inc� Technical Service�
• Make sure over-temperature screw is
completely tightened� If it is missing,
turn unit o and unplug it� Call
Arizant Healthcare Inc� Technical
Service�
CONDITION CAUSE SOLUTION
Cannot remove warming cassette
from unit�
• Warming cassette is too
full, uids are still being
infused, or clamp is open
proximal to the warming
cassette�
• Warming unit is below
patient level, creating
excessive back pressure�
• Make sure uid is drained from
warming cassette before sliding out
the cassette, that uids are no longer
infusing, and that clamp is closed
proximal to the warming cassette�
• Raise unit above patient level�
CONDITION CAUSE SOLUTION
Alarm indicator light illuminates and
alarm sounds, alphanumeric display
alternately ashes a temperature of
33°C or below and the word “LO�”
Under-temperature
condition caused by very
high ow using very cold
uid, or defective heater/
relay�
Alarm should stop when temperature
rises above 33°C� If alarm continues,
unplug unit and discontinue use� Call
Arizant Healthcare Inc� Technical
Service�
CONDITION CAUSE SOLUTION
Alphanumeric display reads “Er 4” or
“Open�”
Open wire on temperature
sensor�
Do not use unit� Call Arizant
Healthcare Inc� Technical Service�
CONDITION CAUSE SOLUTION
Alphanumeric display reads “Er 5” or
“Open�”
Electrical interference� Remove the unit� Refer to biomedical
technician or call Arizant Healthcare
Inc� Technical Service�

Ranger Blood and Fluid Warming Systems
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Arizant Healthcare Inc.
Specifications
PhysiCal ChaRaCteRistiCs
Warming unit
4�5 in� (11 cm) high x 7�5 in� (19 cm) wide x 10 in� (25 cm) long;
wt�: 7 lb� 4 oz� (3�3 kg)
claSSiFication
Classied under IEC 601-1 Guidelines (and other national versions of the Guidelines) as Class I, Type
B, Ordinary Equipment� Not suitable for use in the presence of ammable anesthetic mixtures with
air or with oxygen or nitrous oxide� Classied by Underwriters Laboratories Inc� with respect to
electric shock, re, and mechanical hazards only, in accordance with UL 60601-1 and in accordance
with Canadian/CSA C22�2 No� 601�1�
eleCtRiCal ChaRaCteRistiCs temPeRatuRe ChaRaCteRistiCs
input voltage Set point temperature
100-120 or 220-240 VAC 41°C (±1°C)
operating Frequency over-temperature alarm
100-120 VAC, 50/60 Hz Model 245: 43°C (±1°C)
220-240 VAC, 50/60 Hz Model 247: 48°C (±2°C)
maximum heating poWer under-temperature alarm
900 W 33°C
FuSe over-temperature cutoFF
2 x 10 Amp for 100 – 120 VAC Model 245: 46°C (+3, -2°C)
2 x 6�3 Amp for 220 – 240 VAC Model 247: 50°C (±2°C)
leakage CuRRent
Meets leakage current requirements in accordance with UL 60601-1 and IEC 60601-1�
enviRonmental Conditions
operating temperature range
15° to 40°C (59° to 104°F)
Storage temperature range
-20° to 45°C (-4° to 113°F)
operating humidity
10 to 85% RH, noncondensing
atmoSpheric preSSure range
50 kPa to 106 kPa