HotDog WC52-VET User manual

Veterinary
Patient Warming System
Controller Model WC52-VET
User Manual
Manufactured by:
Augustine Temperature Management
6581 City West Parkway
Eden Prairie, MN 55344 USA
TEL [phone]
FAX [phone]
www.hotdogwarming.com

User Manual: Hot Dog Veterinary Patient Warming System Controller Page 2
Contents
Introduction..................................................................................................................................... 3
Device Description ...................................................................................................................... 3
Indications for Use....................................................................................................................... 3
Contraindications......................................................................................................................... 3
Warnings ......................................................................................................................................... 4
Ensure that adequate steps are taken to mitigate pressure............................................................... 5
Proper Use and Maintenance........................................................................................................... 5
Initial Setup & Assembly ................................................................................................................ 6
Contents....................................................................................................................................... 6
Control Panel Features & Operating Modes................................................................................ 7
Alarms.......................................................................................................................................... 8
Error Codes.................................................................................................................................. 9
Instructions for Use ....................................................................................................................... 10
Maintenance & Cleaning............................................................................................................... 10
Testing of Indicator Light Function........................................................................................... 10
Cleaning—General .................................................................................................................... 11
Cleaning—Hot Dog Controller.................................................................................................. 12
Cleaning—Warming Blankets................................................................................................... 12
Troubleshooting/Error Codes........................................................................................................ 13
Technical Support & Customer Service........................................................................................ 14
Definition of Product Symbols...................................................................................................... 15
Accessory Part Numbers ............................................................................................................... 15
Specifications ................................................................................................................................ 16
Electromagnetic Compatibility (EMC) ......................................................................................... 18

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INTRODUCTION
Device Description
The Hot Dog Veterinary Patient Warming System (“System”) consists of the Hot Dog Controller,
reusable Warming Blankets. This manual includes use and maintenance instructions and
specifications for the Hot Dog Controller Model WC52-VET. For information about Hot Dog
warming blankets, refer to the User Manual provided with each blanket.
The Hot Dog Controller is designed to help maintain normothermia in patients before, during and
after surgical procedures and to help prevent unintended hypothermia. The system is powered and
controlled by an electronic control unit. Warming blankets are powered at low voltage, ensuring
safety for patients and operators. Warming temperatures are controlled automatically to user-
selected levels, and over-temperature safety shut-offs are integrated into the Controller as well as
into each warming blanket.
The Hot Dog Controller can be placed on a flat surface or mounted on an IV pole. The System
can be operated continuously to maintain uniform heat under or over the patient, depending on
which warming blanket is selected. It is the responsibility of the user to determine whether
warming is appropriate for each individual patient. The System should not be used when clinical
considerations indicate that warming of the patient is not advisable.
Indications for Use
The System is intended to prevent or treat hypothermia and to provide warmth to patients. The
System should be used in circumstances in which patients may not maintain a state of
normothermia. The System is intended primarily for use in hospitals and surgical centers
including, without limitation, operating, recovery, and emergency rooms and on medical/surgical
floors.
Contraindications
•DO NOT warm patients during aortic cross-clamping; thermal injury may result.
•DO NOT warm patients with ischemic or non-perfused limbs; thermal injury may result.

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WARNINGS
General
•EXPLOSION HAZARD –DO NOT use the Hot Dog Patient Warming System in the
presence of flammable anesthetics or highly oxygen-enriched environments such as
hyperbaric chambers, oxygen tents, etc.
•Inspect Hot Dog Warming Blankets prior to use for signs of damage or excessive wear
such as cuts, holes or loose electrical connections. If signs of wear are evident, do not use the
product. Do not expose the inner heating element to fluids.
•DO NOT continue to use the System if the over-temperature indicator and/or alarm continue
to sound after reset. Refer to the “Alarm” section of this manual for more information.
Hot Dog Warming Blankets,
•DO NOT use Hot Dog Warming Blankets beyond the labeled expiration date.
Pressure reduction
When a patient remains in a single position for an extended amount of time, ischemia
can occur at points of elevated pressure, which can lead to tissue necrosis. Warming
ischemic tissue is contraindicated. Therefore, precautions should be taken when using
Hot Dog Warming Blankets under a patient. The Hot Dog Warming Blanket IS NOT a
pressure reduction device.
When using Hot Dog Warming Blankets under a patient, ensure that adequate steps are taken to
mitigate pressure.
Hard objects should not be placed between the patient and the Hot Dog Warming Blanket.
If a rigid cautery ground plate is used, ensure that adequate steps are taken to mitigate
pressure. Do not place the cautery plate on the sensor area of the Hot Dog Warming Blanket. The
cautery plate must not be larger than the patient, i.e. the patient must completely
cover the cautery plate.
PRECAUTIONS
Monitor the patient’s vital signs regularly during warming according to institutional protocol. If
vital-sign instability occurs, notify the clinician.
Do not use heat settings above 40°C on or under patients with poor perfusion.
Use over-body warming instead of under-body warming when using a vacuum-activated
positioning system. DO NOT use a Hot Dog Warming Blanket between a patient and a vacuum-
activated positioning system.

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Use over-body warming instead of under-body warming on patients with multiple risk factors
such as short hair, poor circulation, severe illness that may impact circulation, or long-duration
procedures (> 2 hours).
Do not expose the Hot Dog Warming Blanket to a continuous exchange of cold irrigation fluids.
INSTRUCTIONS FOR USE
When using the Hot Dog Warming Blanket above the patient:
Use on the warmest setting appropriate to the patient condition and procedure for maximum
effectiveness.
Place the Hot Dog Warming Blanket directly on the patient with the sensor in contact with the
patient.
When using the Hot Dog Warming Blanket under the patient or wrapped around the
patient:
Do not use heat settings above 40°C unless you have a towel placed between the patient and the
Hot Dog Warming Blanket.
The sensor should be in contact with the patient. A towel between the sensor and the patient is
acceptable.
Ensure that adequate steps are taken to mitigate pressure.
PROPER USE AND MAINTENANCE
Do not open the Hot Dog Controller. There are no user-serviceable parts. If service is required,
contact Technical Support (see page 14). The manufacturer assumes no responsibility for the
reliability, performance, or safety of the Hot Dog Patient Warming System if any of the following
events occur:
•The Hot Dog Controller is disassembled or serviced by an unauthorized person.
•The System’s components are used in a manner other than described in the User Manuals.
•The Hot Dog Controller is installed in an environment that does not meet the appropriate
electrical and grounding requirements.
The Hot Dog Controller is grounded and should not be attached to un-grounded tables intended
for use with a hyfrecator or equivalent devices.

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INITIAL SETUP & ASSEMBLY
Contents
The following components are included in the Hot Dog Controller box:
•1—Hot Dog Controller Model WC5X
•1—IV pole adapter and mounting hardware
•1—Mains power cord
•1—User Manual and Service Manual
•1—Hot Dog Warming Blanket Cable (P/N A101)
Reusable Hot Dog Warming Blankets are sold separately.
Mounting the Hot Dog Controller to an IV Pole
To mount the Hot Dog Controller to an IV pole, place the Controller IV pole Clamp around the
IV pole and turn the clamp handle clockwise until securely tightened (Figure 1). To remove the
Controller from the IV pole, turn the clamp handle counterclockwise until the unit releases.
Caution
To prevent the IV pole from tipping, the Controller must be attached at a height that provides
stability. It is recommended to use an IV pole with a minimum wheelbase radius of 35.6 cm (14
in) and to mount the Controller no higher than 112 cm (44 in) from the floor. Failure to properly
mount the Controller may result in IV pole tipping, catheter site trauma and patient injury.
Figure 1: Hot Dog Controller Mounted on an IV Pole

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Control Panel Features & Operating Modes
Figure 2: Hot Dog Model WC5X Controls
Figure 3: Hot Dog Ports

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Mains Power Switch / ON Power Indicator
When the Hot Dog Controller is plugged into an electrical outlet and the Mains Power Switch on
the back of the Controller is turned ON, all displays will illuminate briefly, and the Controller
will beep. Afterwards, the software version will display for approximately 2 seconds. The Mains
Power ON Light will illuminate and the Controller will remain idle until a warming blanket is
plugged in. When the unit is ON and idle (i.e., no Temperature Setting Lights are illuminated), no
power will be applied to the warming blanket, and no alarm conditions will be indicated.
Temperature Adjust Button / Temperature Setting Display
When a warming blanket is plugged into a port, an audible beep will sound, and the display will
show two dashes. Press the Temperature Adjust Button for the desired port until the desired
temperature is displayed. The temperature can be selected in one-degree increments from 37-
43°C for Ports A and B. The designated warming temperature will flash until the selected
temperature is achieved, at which time the selected temperature will steadily display.
Port A and B
Ports A and B are used only for Hot Dog Warming Blankets.
Port C, D and E
Ports C, D and E are for future Hot Dog veterinary accessories; at this time there are no
accessories manufactured for use on these ports.
Alarms
Alarm: Port A and B
If the warming device sensor temperature exceeds one degree above set point or other fault
conditions exist, an audible alarm sounds and the Alarm Light for the affected port illuminates

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Yellow. The Controller will automatically turn off power to that warming device. If the Alarm
Light stays illuminated and the alarm continues to sound, disconnect the warming device from the
Controller to silence the alarm. If the controller alarms again after a reset was performed,
discontinue use and refer the Controller to biomedical engineering for evaluation.
Error Codes
The Controller displays the following error codes on the Temperature Display for specific alarm
conditions. Refer to Troubleshooting and Error Codes sections for more details.
Error Code
Alarm Condition
E1 on affected port
Over-temperature alarm –Temperature of sensor
has exceeded 1 degree above set-point
E2 on affected port
Time-to-temperature alarm –device has not reached
selected set point within ten minutes
E3 on affected port
Over-current condition
E3 on all ports
System over-current condition
E4 on affected port
Primary or secondary broken sensor alarm
E8 on affected port
Over temperature –Secondary –Temperature of
sensor has exceeded 46C for blankets (on controllers
with software version 1.06 and lower, this alarm
displays as E1 and not E8)
Six hour timer
If a warming device is left on with no adjustment to
temperature settings for six hours the controller will
turn off power to warming device.
EA, EC, EE, EF, EH, EP on
all ports
System failure, refer controller to biomedical
engineering department.

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INSTRUCTIONS FOR USE
The instructions below describe how to operate the Model WC5X Hot Dog Controller. For
information about Hot Dog warming blankets, refer to the User Manual provided with each
blanket.
1. Mount the Controller on an IV pole or place the Controller on a flat, horizontal surface.
2. Insert the Controller’s power plug into a properly grounded hospital-grade electrical outlet.
WARNING: To avoid risk of electric shock, this equipment must only be connected to a
supply mains with protective earth.
Note: The Controller is grounded and should not be attached to un-grounded tables intended
for use with a hyfrecator or equivalent devices.
3. After the lights illuminate in sequence, the Controller will emit an audible tone and display
the software Version on the Temp Setting Display for approximately 2 seconds.
4. Position and secure the Hot Dog Warming Blanket following instructions in the User
Manual provided with the Blanket.
5. Insert the Warming Blanket’s connecting cable into port A or B on the Controller....
Note: When the connecting cable is inserted into the Controller, an audible beep indicates that
the control sensor and over-temperature sensor are present and functioning properly.
6. Press the Temp Adjust Button that corresponds with the port being used until the desired
temperature is set, as indicated by the Temp Setting Display. The Display will flash until the
temperature has been reached.
7. Monitor the patient’s temperature regularly. Adjust the temperature setting on the Controller
(as described in the preceding paragraph) as necessary to maintain the desired patient
temperature.
8. When the warming therapy is complete, turn the Mains Power Switch to OFF.
MAINTENANCE & CLEANING
Testing of Indicator Light Function
Frequency
This test should be completed upon initial equipment check-in and once every 12 months (or
more frequently if required by hospital guidelines).

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Method
1. Insert the Hot Dog Controller’s power plug into a properly grounded hospital-grade electrical
outlet and confirm that NO cables or blankets are connected to any of the Controller’s ports.
2. Turn the Mains Power Switch to ON and observe for the following proper start-up sequence:
a. The Alarm LED’s will power up sequentially
b. The Segmented displays then power up sequentially one by one, from left to right as
the number “8”
3. After the LED’s sequence, the buzzer will give a short chirp and the software version will
display for approximately 2 seconds.
4. After the sequence completes, only the Mains Power ON Light will remain illuminated.
5. If this sequence varies or is incomplete, contact Customer Service (see page 14).
Cleaning—General
Warnings
•DO NOT use a dripping wet cloth to clean Hot Dog components, and DO NOT immerse Hot
Dog components in liquid. Moisture will damage the components, and thermal injury may
result.
Precautions
•DO NOT use pure harsh solvents (e.g., MEK, acetone, etc.) to clean Hot Dog components.
Solvents may damage plastic parts, labeling and product finish.
•DO NOT use high-level disinfectants (e.g., gluteraldehyde, peracetic acid). The U.S. Centers
for Disease Control (CDC) recommends against the use of high-level disinfectants for
cleaning environmental surfaces that may contact the patient since the chemicals are highly
toxic.
•DO NOT spray cleaning solutions into electrical connectors.
Recommended cleaners
Alcohol-based disinfectants are easiest to use, since they are fast-acting and can be either sprayed
or wiped on.
Other cleaners that have been tested and are compatible with the outer surfaces of Hot Dog
components include sodium hypochlorite (diluted bleach), phenolic germicidal detergent,
quaternary ammonium detergent and chlorhexidine. Cleaners that contain accelerated hydrogen
peroxide (Accel, Rescue, Prevail) are NOT recommended for cleaning.

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Cleaning—Hot Dog Controller
Frequency
As needed
Tools/Equipment
•Sponge or soft cloth
•Mild detergent or anti-microbial spray
•Dry soft cloth
Method
1. Disconnect the Controller from the power source before cleaning.
2. Wipe Controller with moistened sponge or soft cloth; avoid pushing fluids into any openings.
3. Dry with a separate soft cloth.
Cleaning—Warming Blankets
Frequency
Clean between patient use and when the Warming Blanket appears soiled.
Method
Cleaning steps are described in the User Manual provided with the Warming Blankets.

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TROUBLESHOOTING/ERROR CODES
Alarm lights and error code display
Alarm lights and an audible alarm turn on when an error condition occurs. The associated error code will remain
on the display until the condition is cleared. If multiple alarm conditions occur sequentially, the code associated
with the initial alarm condition will be displayed. In all cases, the heater is turned off when an alarm occurs.
Alarm Error
Condition
Error Code
Displayed
Description
Over-temperature
(primary)
E1 (for each
port)
When the temperature exceeds one degree above set point, audible and
visual alarms are initiated, and power is removed from the output. The alarm
will reset when:
•Temperature is within acceptable limits (+ 1°C), or
•Cable connecting warming device to Controller is disconnected, or
power is turned off at mains switch.
Heater Time Out
E2 (for each
port)
Failure to reach temp
(Time to Temperature): When the system does not achieve the set-point
within 10 minutes, audible and visual alarms are initiated. The alarm will
reset when the device is unplugged or power is turned off at mains switch.
Overcurrent (Port)
E3 (for each
port)
When port current draw exceeds a predetermined level, audible and visual
alarms are initiated. The alarm will reset when the device is unplugged or
power is turned off at mains switch.
Primary or Secondary
sensor failure
E4 (for each
port)
Sensor are reading outside of the useful range
Over-temperature
(secondary)
E8 (for each
port) for
software
versions
>=1.07
E1 for
software
version <=1.06
When the temperature exceeds 46°C on port A and B, audible and visual
alarms are initiated. The alarm will reset when the device is unplugged or
power is turned off at mains switch.
Temperature control
timeout
-- (for each
port)
If a warming device is left operating for 6 hours with no changes to set
point, power will be removed, three short audible chirps will sound, and the
visual alarm indicators will flash continuously. Pressing the temperature
select button will clear the alarm and re-start normal operation.
Overcurrent (System)
E3, E3, E3
Too many large heating devices in use. Power system down (remove from
mains or cycle power switch). Remove one device and re-start. If problem
continues call customer service

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Calibration failure
EA, EA, EA
System failure. If this occurs, call customer service for technical support
Hardware CPLD failure
EC, EC, EC
System failure. If this occurs, call customer service for technical support
System Failure (FET
Failure)
EF, EF, EF
System failure. If this occurs, call customer service for technical support
Hardware I2C failure
EH, EH, EH
System failure. If this occurs, call customer service for technical support
Hardware power supply
failure
EP, EP, EP
System failure. If this occurs, call customer service for technical support
General System Failure
EE, EE, EE
(software
version 1.06 or
lower only)
System failure. If this occurs, call customer service for technical support
TECHNICAL SUPPORT & CUSTOMER SERVICE
Please have the serial number of your Hot Dog Controller when you call for technical support.
The serial number is located on the back of the Controller. If it is necessary to return the
Controller for service or repair, contact your local supplier or sales representative.
Augustine Temperature Management
6581 City West Parkway
Eden Prairie, MN 55344 USA
TEL [phone]
FAX [phone]
www.vetwarming.com

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DEFINITION OF PRODUCT SYMBOLS
Do Not Place Under Patient
This Side Up
Mains Power On
Indicator
This Side Down
Heating Area
Alarm
Attention, consult
accompanying documents
Reference Number
Lot Number
BF Patient Applied Part
according to IEC60601-1.
Serial Number
Manufacture Date
Temperature in Range
Transport and storage
temperature range
Temperature
Adjustment
Keep Dry
Transport and storage
humidity range
Fuse
Equipotential
EU Authorized
Representative
Return to Authorized
Representative
Temperature Sensor
Do not use after
YYYY-MM
Manufacturer
IPX2
Protected against dripping water when tilted up to 15°; Vertically dripping water shall have no harmful effect
when the enclosure is tilted at an angle up to 15° from its normal position.
Conforms to European Medical Device Directive 93/42/EEC
Medical Equipment Classified by Intertek Testing Services NA Inc. with respect to electric shock, fire, and mechanical
hazards only, in accordance with UL 60601-1. Classified under the Medical Device Directive (93/42/EEC) as a Class IIb
device.
ACCESSORY PART NUMBERS
The following cable part numbers are used with the Hot Dog Patient Warming System:
Part Number
Description
A101
Hot Dog Warming Blanket Cable, 4m (13ft)
A101-6000
Hot Dog Warming Blanket Cable, 6m (19.7ft)

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SPECIFICATIONS
Physical Characteristics
Dimensions
33 cm high x 14.0 cm deep x 19.7 cm wide13” high x 5.5” deep x 7.75” wide
Weight
5 kg (11 lbs.)
Mounting
Can be placed on a horizontal flat surface (i.e. table top), clamped to an IV pole or
hung on a OR/gurney rail using optional hanging hooks
Temperature Characteristics
Temperature Control
Micro-processor
Operating Temperatures
Blanket Ports A and B adjustable in 1oC increments
37° to 43° ± 1.0°C
98.6° to 109.4° ± 1.8°F
Port C - NA
Safety System
All alarm conditions are classified as Medium Priority Technical Alarms
Primary Over-temp Alarm
Ports A and B (Warming Blanket)
Alarm sounds when temperature sensor is at set point + 1°C
Port C - NA
Secondary Over-temp Alarm
Ports A and B (Warming Blanket)
Independent electronic circuit shuts the heater off if the Warming Blanket
temperature sensor reaches set point + 3°C. (46°C)
Port C - NA
Time out timer
If warming blanket does not reach set temperature within 10 minutes the
controller will alarm
Six hour timer
If a warming blanket is left at a steady setting for six hours, the controller will
discontinue power to warming blanket.
Over-current limits
Port A
10 amps max
Port B
10 amps max
Port C
5 amps
System
14.6 amps
System Over-current Protection
Dual input fused lines.

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Electrical Characteristics
Leakage Current
Meets UL 2601-1 and IEC 60601-1 requirements for Class I, Type BF equipment.
Power Consumption
850W maximum
Power Cord
4.6 m (15 ft)
Device Ratings
Input: 100-240 VAC, 50/60 Hz, 850VA
Output A & B: 48 VDC, 480 VA Max each
Output C: 240 VA Max
Output D & E: 48 VDC, 144 VA Max each
Fuses
T10AL250V (2 x 5x20mm)
Environmental Conditions
Environmental Conditions for Transport
and Storage
Temperature: -20°C to 60°C
Humidity: 20% to 80%
Keep Dry
Environmental Conditions for Use
Temperature: 15°C to 25°C
Humidity: 20% to 80%
Classification and Standards
Certifications
IEC 60601-1; EN 60601-1-2; UL 60601-1; CAN/CSA-C22.2, No. 601.1, EN 55011
Classification
Classified under IEC 60601-1 Guidelines (and other national versions of the
Guidelines) as Class I, Type BF, Ordinary equipment, Continuous operation. Not
suitable for use in presence of flammable anesthetic mixtures with air or with
oxygen or nitrous oxide. Classified by Intertek Testing Services NA Inc. with
respect to electric shock, fire, and mechanical hazards only, in accordance with UL
60601-1. Classified under the Medical Device Directive (93/42/EEC) as a Class IIb
device. Classified under the Canadian Medical Device Regulation as Class II.
Diagnostics
A qualified technician can perform general system testing. The Controller has no
user serviceable parts.
Important Information
This device complies with the EMC requirements according to IEC 60601-1-2.
Radio transmitting equipment, cellular phones, etc. shall not be used in the close
proximity of the device since this could influence the performances of the device.
Particular precaution must be considered during use of strong emission sources
such as High Frequency surgical equipment and similar so that, e.g., the HF-cables
are not routed on or near the device. If in doubt, contact a qualified technician or
your local representative.

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ELECTROMAGNETIC COMPATIBILITY (EMC)
The Hot Dog Vet Patient Warming System requires special precautions regarding EMC and must
be installed and put into service according to the EMC information provided in this User Manual.
Warning
•Use of accessories and cables other than those specified may result in increased
emissions or decreased immunity of the Hot Dog Vet Patient Warming System.
•The Hot Dog Vet Patient Warming System should not be used adjacent to or stacked
with other equipment. If adjacent or stacked use is necessary, carefully observe the
Hot Dog Patient Warming System to verify that it operates normally in this
configuration.
Guidance and Manufacturer’s Declaration – Electromagnetic Emissions
The Hot Dog™ Patient Warming System is intended for use in the electromagnetic environment specified below. The
customer or user of the Hot Dog Patient Warming System should assure that it is used in such an environment.
Emissions test
Compliance
Electromagnetic Environment –Guidance
RF emissions, CISPR 11
Group 1
The Hot Dog Patient Warming System uses RF energy only
for its internal function. Therefore, its RF emissions are very
low and are not likely to cause any interference in nearby
electronic equipment.
RF emissions, CISPR 11
Class A
The Hot Dog Patient Warming System is suitable for use in
all establishments other than domestic and those directly
connected to the public low-voltage power supply network
that supplies buildings used for domestic purposes.
Harmonic emissions, IEC 61000-3-2
Class A
Voltage fluctuations/ flicker
emissions, IEC 61000-3-3
Complies

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Guidance and Manufacturer’s Declaration – Electromagnetic Immunity
The Hot Dog™ Vet Patient Warming System is intended for use in the electromagnetic environment specified below.
The customer or the user of the Hot Dog Patient Warming System should assure that it is used in such an
environment.
Immunity Test
IEC 60601
Test Level
Compliance Level
Electromagnetic Environment –
Guidance
Electrostatic
discharge (ESD)
IEC 61000-4-2
±6 kV contact
±8 kV air
±6 kV contact
±8 kV air
Floors should be wood, concrete or ceramic
tile. If floors are covered with synthetic
material, the relative humidity should be at
least 30 %.
Electrical fast
transient/burst
IEC 61000-4-4
±2 kV for power
supply lines
±1 kV for
input/output
lines
±2 kV for power
supply lines
±1 kV for
input/output
lines
Mains power quality should be that of a typical
commercial or hospital environment.
Surge
IEC 61000-4-5
±1 kV line(s) to line(s)
±2 kV line(s) to earth
±1 kV line(s) to
line(s)
±2 kV line(s) to
earth
Mains power quality should be that of a typical
commercial or hospital environment.
Voltage dips,
short
interruptions and
voltage variations
on power supply
input lines
IEC 61000-4-11
<5 % UT
(>95 % dip in UT)
for 0,5 cycle
40 % UT
(60 % dip in UT)
for 5 cycles
70 % UT
(30 % dip in UT)
for 25 cycles
<5 % UT
(>95 % dip in UT)
for 5 sec
<5 % UT
(>95 % dip in UT)
for 0,5 cycle
40 % UT
(60 % dip in UT)
for 5 cycles
70 % UT
(30 % dip in UT)
for 25 cycles
<5 % UT
(>95 % dip in UT)
for 5 sec
Mains power quality should be that of a typical
commercial or hospital environment. If the
user of the Hot Dog Patient Warming System
requires continued operation during power
mains interruptions, it is recommended that
the Hot Dog Patient Warming System be
powered from an uninterruptible power supply
or a battery.
Power frequency
50/60 Hz)
magnetic field
IEC 61000-4-8
3 A/m
3 A/m
Power frequency magnetic fields should be at
levels characteristic of a typical location in a
typical commercial or hospital environment.
NOTE UT is the a.c. mains voltage prior to application of the test level.

User Manual: Hot Dog Veterinary Patient Warming System Controller Page 20
Guidance and Manufacturer’s Declaration –Electromagnetic Immunity (cont’d)
The Hot Dog™ Vet Patient Warming System is intended for use in the electromagnetic environment specified below.
The customer or the user of the Hot Dog Vet Patient Warming System should assure that it is used in such an
environment.
Immunity Test
IEC 60601
Test Level
Compliance Level
Electromagnetic Environment –
Guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150 kHz to 80 MHz
10 V/m
80 MHz to 2,5 GHz
3 V
10 V/m
Portable and mobile RF communications
equipment should be used no closer to any part of
the Hot Dog Patient Warming System, including
cables, than the recommended separation
distance calculated from the equation applicable
to the frequency of the transmitter.
Recommended separation distance
P2,1d 
P35,0d 
80 MHz to 800 MHz
P7,0d 
800 MHz to 2,5 GHz
where P is the maximum output power rating of
the transmitter in watts (W) according to the
transmitter manufacturer and d is the
recommended separation distance in metres (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey,a
should be less than the compliance level in each
frequency range.b
Interference may occur in the vicinity of
equipment marked with the following symbol:
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects and people.
aField strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land
mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with
accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey
should be considered. If the measured field strength in the location in which the Hot Dog Patient Warming System is
used exceeds the applicable RF compliance level above, the Hot Dog Patient Warming System should be observed to
verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the Hot Dog Patient Warming System.
bOver the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.