Ranger 245 User manual

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
®
Irrigation Fluid Warming System
®
Irrigation Irrigation
Irrigation
SET POINT
41
°
C
ALARM
N
o
t
f
o
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I
.
V
.
u
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e
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

Ranger Fluid Warming Systems
English
1
Technical Service and Order Placement 2
 In-warrantyRepairandExchange 2
 WhenYouCallforTechnicalSupport 2
Introduction3
 Model245Blood/FluidWarmingSystem 3
 Model247IrrigationWarmingSystem 3
 IndicationsforUse 3
 WarningsandPrecautions 3
 BeforeServicingEquipment 4
Product Description4
 RangerWarmingUnit 4
Maintenance and Storage5
Model 245Blood/Fluid Warming System Preventative Maintenance Checklist 6
Model 247 Irrigation Warming System Preventative Maintenance Checklist 9
Replacing the Power Fuse 12
Troubleshooting 13
Specifications 15
Definition of Symbols 16
Table of Contents

Ranger Fluid Warming Systems
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2
Technical Service and Order Placement
Technical Service

TEL: [phone]
[phone]
FAX: [phone]
 .
TEL: [phone]
FAX: [phone]

TEL: [phone]
FAX: [phone]

TEL: [phone]
Indigo (in France only): 0 820 33 90 40
FAX: [phone]
Order Placement

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, first 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
five (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 Fluid Warming Systems
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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 fits easily above the Bair Hugger® 500 or 700 series
warming unit.
Model 245 Blood/Fluid Warming System
e Ranger Blood/Fluid Warming System is designed to warm blood, blood products, and liquids and
deliver these at flow rates from KVO to 500 mL/min. At these flow rates, the device maintains fluid
output temperatures ranging from 33°C to 41°C (Note: is is for room temperature fluids only). It takes
less than 2 minutes to warm up to the 41°C set point temperature. e alarm points on the Model 245
are 43°C and 44°C.
Disposable blood/fluid sets are available for stand flow, high flow, 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 disposables 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 fluids and deliver these at flow rates
from 0 to 867 mL/min. At these flow rates, the device maintains fluid output temperatures ranging from
33°C to 41°C (Note: is is for room temperature fluids only). It takes less than 2 minutes to warm
up to the 41°C set point temperature. e alarm points on the Model 247 are 48°C and 50°C.
e Ranger Irrigation Fluid warming disposable set is sterile, latex-free, single-use-only and is designed to
be used with the reusable Ranger Irrigation warming unit. Do not use other disposables with the Model
247, including those designed for the Model 245 Blood/Fluid warming system.
Indications for Use
Blood/Fluid Warming System
e Ranger Blood/Fluid warming system is intended to warm blood, blood products, and liquids.
Irrigation Warming System
e Ranger Irrigation warming system is intended to warm irrigation fluids.
Warnings and Precautions
danger
Explosion hazard. Do not use in the presence of flammable anesthetics.
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 fluids if air bubbles are present in the fluid 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 fluid flow and discard the disposable set.
Have the warming unit tested by a biomedical technician or call Arizant Healthcare Inc.
Technical Service.

Ranger Fluid Warming Systems
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caution
• Model 247 is not for I.V. use.
• Do not immerse the fluid 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.
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:
• Modifications 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.
Product Description
e Ranger fluid warming system consists of a warming unit and a sterile disposable fluid delivery set.
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 find:
• Alphanumeric display that indicates the heater temperature during normal operation. In an over-temperature
condition, the display alternately flashes 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 flashes 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.
®
Irrigation FluidWarming System
®
Irrigation
Irrigation
SET PO INT
41
°
C
ALARM
N
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t
f
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I
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V
.
u
s
e
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

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Maintenance and Storage
Cleaning the Ranger warming unit
Clean the Ranger 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. Damage to the case, label, and internal components
may result.
       :
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, soft cloth.
    :
e Ranger cleaning tool 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 difficult to clean the unit.
• e cleaning tool provides only superficial cleaning—it does not disinfect or sterilize the interior
of the unit.

1. Unplug the warming unit.
2. Unfold the cleaning tool. Wet the foam
pads with a nonabrasive solution, such as
Alconox* 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 off the unit to remove excess fluid.
  , - :
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 registered trademark of Alconox, Inc.

Ranger Fluid Warming Systems
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6
Model 245 Blood/Fluid Warming System
Preventative Maintenance Checklist
The operating temperature and alarms should be tested
at least every 6 months or according to institutional protocol.
Operating temperature: ______°C
(Specification = 41°C±1)
Over-temperature alarm points: ______°C
(Specification = 43°C±1 and 46°C [44-49°C]) ______°C
Test Setup
caution
Temperature adjustments cannot be made to the Ranger warming unit. If the test shows the temperature
is out of specification, please call Arizant Healthcare Inc. Technical Support at 1-800-733-7775.
TOOLS AND EQUIPMENT
• Thermocouple: 0.005" lead or smaller
• Calibrated thermocouple temperature monitor
• Aluminum tape
• Ranger standard flow warming set
• Phillips screwdriver
• Saline/water
Fig. 1: Ranger standard fluid warming cassette

Ranger Fluid Warming Systems
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7
1. Use aluminum tape to affix 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, fluids must be administered into the inlet tube, NOT into the outlet tube.
4. Close patient line with white clamp to stop flow.
Testing the Operating Temperature
1. Perform Test Setup.
2. Turn the Ranger unit ON and allow it to warm up for 5 minutes.
3. The 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
Fluid
warming
cassette
Blue clamp
Fluid source
White clamp
Roller clamp
Bubble trap
Exit
Outlet tubeInlet tube

Ranger Fluid Warming Systems
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Testing the Over-temperature Alarm Points (43° and 46°C)
The 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. The Ranger system is very
responsive to heater input; therefore the test procedures are technique sensite. Read instructions thoroughly
before beginning these tests.
The first alarm point at 43°C alerts user to the rise in temperature (see step 3). At the 46°C secondary alarm
set point, the unit cuts power to the heaters (see step 4). Please note that due to the heaters’ rapid response,
you may see temperature readings drift within the range of 44-49°C.
1. Perform Test Setup.
2. Turn the Ranger unit ON and allow it to stabilize at normal operating temperature (41°C±1) for 5 minutes.
3. Slowly loosen the over-temperature screw on the bottom of the Ranger unit (see Figure 3). Listen for
a slight click as the microswitch opens. Stop turning the over-temperature screw as soon as you hear
the click. This unit is now in over-temperature test mode, and the temperature output of the unit
should begin to rise. When the display reads 43°C, verify that an audible alarm sounds, the alarm light
illuminates, and the display alternately flashes “HI” and the plate temperature.
4. Listen for the power relay to click between 44-49°C (you can feel the click when holding the lower left
corner of the unit as you face the front display). The click signifies the secondary alarm trip point and
signals that power to the heaters has been shut off. The 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).
The temperature reading on the monitor should peak between 44-49°C.
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 fluids through
the warming cassette. This returns the unit to normal operating temperature. Call Arizant Healthcare
Inc. Technical Support.
5. The secondary alarm is designed to latch. Verify this feature by momentarily turning off the power switch,
then turning it on again. The Ranger unit should continue alarming throughout this sequence.
6. Securely tighten the over-temperature screw, turn off the Ranger unit, and unplug the unit. Once power is
cut to the Ranger unit, the alarm will cease. The unit is ready to return to service after it cools to normal
operating temperature (approximately 20-30 minutes).
Screw must be
fully seated for
unit to function
properly.
Fig. 3: Ranger over-temperature screw
Over-temperature
screw

Ranger Fluid Warming Systems
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Fig. 1: Ranger Irrigation fluid warming cassette
0.75”
8.50”
Thermocouple
Inlet tube
Aluminum tape
®
IrrigationFluidWarmingSystem
Model 247 Irrigation Warming System
Preventative Maintenance Checklist
The operating temperature and alarms should be tested
at least every 6 months or according to institutional protocol.
Operating temperature: ______°C
(Specification = 41°C±1)
Over-temperature alarm points: ______°C
(Specification = 48°C±2 and 50°C±2) ______°C
Test Setup
caution
Temperature adjustments cannot be made to the Ranger Irrigation warming unit. If the test shows the
temperature is out of specification, please call Arizant Healthcare Inc. Technical Support at 1-800-733-7775.
TOOLS AND EQUIPMENT
• Thermocouple: 0.005" lead or smaller
• Calibrated thermocouple temperature monitor
• Aluminum tape
• Ranger Irrigation warming set
• Phillips screwdriver
• Saline/water
1. Use aluminum tape to affix a thermocouple to the top surface of the Ranger Irrigation warming cassette
as shown in Figure 1.
2. Slide the warming cassette into the slot of the Ranger Irrigation warming unit.

Ranger Fluid Warming Systems
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10
3. Using room temperature saline/water, prime the cassette per instructions included with it.
note:To achieve correct results, fluids must be administered into the inlet tube, NOT into the outlet tube.
4. Close patient line with white clamp to stop flow.
Testing the Operating Temperature
1. Perform Test Setup.
2. Turn the Ranger Irrigation unit ON and allow it to warm up for 5 minutes.
3. The 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. 2: Ranger Irrigation fluid warming set
Exit
White
clamp
Blue clamp
Fluid
source
Fluid warming
cassette
Inlet tube
Outlet
tube

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Testing the Over-temperature Alarm Points (48° and 50°C)
The 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. The Ranger Irrigation system
is very responsive to heater input; therefore the test procedures are technique sensitive. Read instructions
thoroughly before beginning these tests.
The first alarm point at 48°C alerts user to the rise in temperature (see step 3). At the 50°C secondary
alarm set point, the unit cuts power to the heaters (see step 4).
1. Perform Test Setup.
2. Turn the Ranger Irrigation unit ON and allow it to stabilize at normal operating temperature (41°C±1)
for 5 minutes.
3. Slowly loosen the over-temperature screw on the bottom of the Ranger Irrigation unit (see Figure 3).
Listen for a slight click as the microswitch opens. Stop turning the over-temperature screw as soon as
you hear the click. This unit is now in over-temperature test mode, and the temperature output of the
unit should begin to rise. When the display reads 48°C, verify that an audible alarm sounds, the alarm
light illuminates, and the display alternately flashes “HI” and the plate temperature.
4. Listen for the power relay to click between 49-52°C (you can feel the click when holding the lower left
corner of the unit as you face the front display). The click signifies the secondary alarm trip point and
signals that power to the heaters has been shut off. The 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). The temperature reading on the monitor should peak between 49-51°C.
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
fluids through the warming cassette. This returns the unit to normal operating temperature. Call
Arizant Healthcare Inc. Technical Support.
5. The secondary alarm is designed to latch. Verify this feature by momentarily turning off the power
switch, then turning it on again. The Ranger Irrigation unit should continue alarming throughout this
sequence.
6. Securely tighten the over-temperature screw, turn off the Ranger Irrigation unit, and unplug the unit.
Once power is cut to the Ranger Irrigation unit, the alarm will cease. The unit is ready to return to
service after it cools to normal operating temperature (approximately 20-30 minutes).
Screw must be
fully seated for
unit to function
properly.
Fig. 3: Ranger Irrigation over-temperature screw
Over-temperature screw

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Replacing the Power Fuse
e power fuses are located in the power entry module.
  
• Small slotted screwdriver

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.

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Troubleshooting
CONDITION
Nothing illuminates on the
warming unit panel.
CONDITION
Alarm indicator illuminates
and alarm sounds, alpha-numeric
display alternately flashes a
temperature of 43˚C for the Model
245 (48°C for the Model 247) or
higher and the word “HI.”
CONDITION
Alarm sounds, alphanumeric display
and alarm indicator light go dark.
CAUSE
• Unit is not turned on, plugged in,
or power cord is not plugged into
an appropriate outlet.
• Unit failure.
CAUSE
Temporary over-temperature
condition because:
• An extreme change in flow rates
occurred (e.g., from 500 ml/min
to stop flow).
• 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.
CAUSE
Primary controller failure. Unit
will no longer operate.
SOLUTION
• 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.
• Call Arizant Healthcare Inc.
Technical Service.
SOLUTION
• Open flow 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 off unit. Discontinue infusion
of fluids. Do not warm fluids
before infusing them through
the Ranger unit.
SOLUTION
Power to heating plates will shut off
if temperature rises to 44˚C for the
Model 245 (50°C for the Model
247). Turn unit off 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.

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

Ranger Fluid Warming Systems
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Specifications
Physical characteristics
 
4.5 in. (11 cm) high x 7.5 in. (19 cm) wide x 10 in. (25 cm) long;
wt.: 7 lb. 7 oz. (3.4 kg)

Classified 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 flammable anesthetic mixtures with air or
with oxygen or nitrous oxide. Classified by Underwriters Laboratories Inc. with respect to electric shock,
fire, 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
    
100-120 or 220-240 VAC 41°C
  - 
100-120 VAC, 50/60 Hz Model 245: 43°C
220-240 VAC, 50 Hz Model 247: 48°C
   - 
900 W 33°C
 - 
2 x 10 Amp for 100 – 120 VAC Model 245: 44°C
2 x 6.3 Amp for 220 – 240 VAC Model 247: 50°C
Leakage current
Meets leakage current requirements in accordance with UL 60601-1 and IEC 601-1.
Environmental conditions
  
15° to 40°C (59° to 104°F)
  
-20° to 45°C (-4° to 113°F)
 
10 to 85% RH, noncondensing
  
50 kPa to 106 kPa

Ranger Fluid Warming Systems
English
16
Definition of Symbols
ON
OFF
Fuse
Attention - Read accompanying documents
Non Explosion-Proof
Type B Applied Part
Voltage, Alternating Current (AC)

Arizant Healthcare Inc.
10393 West 70th Street, Eden Prairie, MN 55344 USA
TEL [phone] • 800-733-7775
FAX [phone] • 800-775-0002
www.arizanthealthcare.com
www.rangerfluidwarming.com
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(as defined in Article 14 of the Medical Device Directive:
93/42/EEC): Actamed Limited, Calder Island Way,
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Tel [phone] • Fax [phone]
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that work, and the Bair Hugger and Arizant logos are trademarks
of Arizant Healthcare Inc., registered or pending in the U.S. Patent
& Trademark Office and in other countries.
©2006 Arizant Healthcare Inc. All rights reserved.
247021A 07/06
U.S. patent 6,464,666. Other patents pending.
Service Manual
®
Fluid Warming SystemFluid Warming System