CSZ Blanketrol_ii User manual

I



Operation and Technical Manual
Model 222R Hyper-Hypothermia Units
Cincinnati Sub-Zero Products, Inc. •12011 Mosteller Road •Cincinnati, Ohio 45241, U.S.A.
www.cszmedical.com
In Europe: •CEpartner4U •Esdoornlaan 13, 3951 DB Maarn.
The Netherlands

II
Symbols
Water Temperature Increasing Temperature
Silence Alarm
Risk of Explosion:
Do not use in the
Presence of
Flammable
Anesthetics
Disconnect Power
Before Servicing Change Water
Quarterly
Temp. Set Point
Indicator Decreasing Temperature
Caution: Read
Operation
Instructions and
Manual Before
Operating
Patient
Temperature
Automatic Control Manual Control
Temperature Set Stop - Repair
Equipotential
Ground
Power Cord Holder Water Flow Indicator Fill to Strainer
Danger; Risk of
Electric Shock Outlet
Inlet Test Indicators
Clean Water
Filter Quarterly
Clean
Condenser
Quarterly
Monitor
Only
ESD
Susceptibility Type B
Equipment
Separate collection
for electrical and
electronic equipment
AC Voltage
~

III
BLANKETROL
®
II
OPERATION/TECHNICAL MANUAL
Cincinnati Sub-Zero Products, Inc., reserves the right to make equipment changes and
improvements, which may not be reflected in this manual.
Federal law restricts this device to use only on the order of a physician.
• Notify the physician if the patient's temperature is not responding properly or
does not reach the temperature prescribed in the prescribed time or if there is a
change in the prescribed temperature range. Failure to inform the physician of
the deviation may result in injury to the patient.
• Do not use the BLANKETROL II system in the presence of flammable
anesthetics. Risk of explosion can result.
• Power interruption will cause the BLANKETROL II to revert to CHECK
SETPOINT resulting in no therapy to the patient. Follow instructions for desired
mode to resume operation. Failure to resume therapy could result in
serious injury or death.
BLANKETROL
®
, MAXI-THERM
®
, MAXI-THERM LITE
®
, TEMP-PAD
®
, and PLASTI-
PAD
®
are registered trademarks of Cincinnati Sub Zero Products, Inc., Cincinnati,
Ohio USA.
Manual 56230 Rev. AF
M008-4014
2010-08
CAUTION
DANGER

IV
•Use distilled water only. Do Not Use De-Ionized water.
•Do not use alcohol. Alcohol may cause blanket deterioration.
•Do not overfill. Overfilling may result in overflow when the water in the blanket
drains back into the system when the system is turned off.
• The repair, calibration, and servicing of the BLANKETROL II should be
performed by qualified Medical Equipment Service Technicians, Certified
Biomedical Electronics Technicians, or Certified Clinical Engineers familiar with
good repair practices for servicing medical devices, and in accordance with
instructions contained in this manual. Improper repair can result in damage
to the BLANKETROL II system and patient injury.
Before returning the BLANKETROL II to patient use after repairs, the FIRST TIME
SET-UP/SYSTEM TEST ROUTINE in Section 2 must always be performed. Improper
repair can result in damage to the BLANKETROL II system and patient injury.
CAUTION
DANGER
DANGER

V
©
Copyright 1982, Cincinnati Sub-Zero Products, Inc. All rights reserved.
• A physician's order is required for setting blanket temperature and use of
equipment. At least every 20 minutes, or as directed by physician, check patient's
temperature and skin condition of areas in contact with blanket; also, check blanket
water temperature. Pediatric, temperature-sensitive, patients with vascular disease,
and operating room patients should be checked more frequently. Notify the
physician promptly of any change in patient status in order to avoid serious
injury or death.
• The method of temperature control provided by all hyper-hypothermia units
presents the danger of heating or cooling body tissues, particularly the skin, to a
point where they are injured, i.e., burns or frostbite, respectively. Depending on the
extent and severity of a burn, very serious and even fatal complications may arise.
• Prevent excessive and/or prolonged tissue pressure and shearing forces, especially
over bony prominences, to prevent skin damage that may result.
• Do not place additional heat sources between the patient and blanket.
Skin damage may result.
• The area between the patient and the blanket should be kept dry to avoid injury to
patient.
• Use only 400 Series, or equivalent, probes on CSZ equipment. Failure to do this
will cause incorrect temperature readings.
WARNING

VI
TABLE OF CONTENTS
SYMBOLS....................................................................................................................................................................II
TECHNICAL HELP ....................................................................................................................................................1
AUTHORIZED EUROPEAN REPRESENTATIVE: ...............................................................................................1
BEFORE YOU CALL FOR SERVICE......................................................................................................................1
IN-WARRANTY REPAIR AND PARTS.................................................................................................................. 1
RECEIVING INSPECTION........................................................................................................................................1
IMPORTANT SAFETY INFORMATION ................................................................................................................1
SECTION 1. INTRODUCTION.................................................................................................................................2
1-0. GENERAL SAFETY PRECAUTIONS....................................................................................................... 2
1-1. GENERAL DESCRIPTION OF THIS MANUAL ......................................................................................2
1-2. GENERAL DESCRIPTION OF THE BLANKETROL II SYSTEM...........................................................3
1-3. CLINICAL APPLICATIONS......................................................................................................................3
1-4. PHYSICAL DESCRIPTION OF THE BLANKETROL II UNIT................................................................3
1-4.1. EXTERNAL FEATURES - FRONT VIEW.................................................................................................. 4
1-4.2. EXTERNAL FEATURES - RIGHT SIDE VIEW.........................................................................................6
1-4.3. EXTERNAL FEATURES - REAR VIEW ....................................................................................................8
1-4.4. EXPANDED DESCRIPTION OF THE BLANKETROL II CONTROL PANEL.......................................10
1-5. REQUIRED ACCESSORIES....................................................................................................................12
1-6. FUNCTIONAL DESCRIPTION OF THE BLANKETROL II SYSTEM.................................................. 12
1-6.1. HEATING SYSTEM..................................................................................................................................12
1-6.2. COOLING SYSTEM.................................................................................................................................13
1-6.3. CIRCULATING SYSTEM......................................................................................................................... 13
1-6.4. TEMPERATURE SAFETY CONTROL SYSTEM.....................................................................................13
1-7. SPECIFICATIONS OF THE BLANKETROL II UNIT ............................................................................ 15
1-8. BLANKETROL II CERTIFICATIONS .................................................................................................... 16
SECTION 2. GENERAL PREPARATION OF THE BLANKETROL II SYSTEM....................................17
2-1. INTRODUCTION.....................................................................................................................................17
2-2. UNPACKING THE SHIPMENT ..............................................................................................................17
2-3. FIRST TIME SET-UP/SYSTEM TEST ROUTINE..................................................................................17
2-3.1. INSPECTING AND ARRANGING THE EQUIPMENT...........................................................................18
2-3.2. COMPLETING A SYSTEM TEST ROUTINE ..........................................................................................19
2-4. UNIT AND PATIENT RELATED PRECAUTIONS................................................................................23
2-5. PATIENT PREPARATION AND BEDSIDE CARE................................................................................24
SECTION 3. OPERATING THE BLANKETROL II UNIT................................................................................26
3-1. INTRODUCTION.....................................................................................................................................26
3-2. ARRANGING THE SYSTEM COMPONENTS....................................................................................... 26
3-3. OPERATING THE BLANKETROL II UNIT IN AUTOMATIC CONTROL MODE..............................28
3-4. OPERATING THE BLANKETROL II UNIT IN MANUAL CONTROL MODE....................................30
3-5. OPERATING THE BLANKETROL II UNIT IN MANUAL CONTROL MODE WITH THE ADDITION
OF THE PATIENT PROBE..................................................................................................................................... 32
3-6. OPERATING THE BLANKETROL II UNIT IN MONITOR ONLY MODE ..........................................33
3-7. CONCLUDING HYPER-HYPOTHERMIA TREATMENT....................................................................34
3-8. STATUS DISPLAY MESSAGES.............................................................................................................35
SECTION 4. GENERAL MAINTENANCE OF THE BLANKETROL II SYSTEM .........................................38
4-1. INTRODUCTION.....................................................................................................................................38
4-1.1 TEST EQUIPMENT REQUIRED .........................................................................................................39
4-2. MAINTENANCE OF THE WATER RESERVOIR..................................................................................41
4-2.1. DRAINING THE RESERVOIR.................................................................................................................43
4-2.2. REPLENISHING THE RESERVOIR .......................................................................................................43
4-3. MAINTENANCE OFTHE WATER FILTER ........................................................................................... 44
4-4. MAINTENANCE OF THE CONDENSER AND GRILLE.......................................................................45

VII
4-5. MAINTENANCE OF THE BLANKETROL II EXTERIOR..................................................................... 45
4-6. MAINTENANCE OF THE HYPER-HYPOTHERMIA BLANKETS......................................................45
4.6.1 PLASTIPAD REUSABLE BLANKET.......................................................................................................45
4-6.2. MAXI-THERM , MAXI-THERM LITE, and TEMP-PAD (DISPOSABLE) HYPER-HYPOTHERMIA
BLANKETS.......................................................................................................................................................... 46
4-7. MAINTENANCE OF REUSABLE THERMISTOR PROBES.................................................................46
SECTION 5. FIELD REPAIR/SERVICE OF THE BLANKETROL II UNIT.................................................... 47
5-1. INTRODUCTION.....................................................................................................................................47
5-2. ACCESS TO THE INTERIOR OF THE BLANKETROL II UNIT...........................................................50
5-2.1. REMOVING THE REAR ENCLOSURE PANEL ..................................................................................... 50
5-2.2. REPLACING THE REAR ENCLOSURE PANEL.................................................................................... 50
5-2.3. REMOVING THE TOP OF THE UNIT ...................................................................................................51
5-2.4 DISCONNECTING THE CABLES FROM THE POWER SUPPLY BOARD........................................... 52
5-2.5. DISCONNECTING THE CABLES FROM THE MICROPROCESSOR BOARD..................................... 52
5-2.6. EXTENDING THE FRONT STORAGE DRAWER ..................................................................................53
5-3. REPLACEMENT OF THE HEATER .......................................................................................................53
5-4. REPLACEMENT OF THE WATER FILTER ASSEMBLY.....................................................................54
5-5. REPLACEMENT OF THE PUMP HOUSING.......................................................................................... 54
5-6. REPLACEMENT OF THE PUMP MOTOR............................................................................................. 55
5-7. REPLACEMENT OF THE WATER TEMPERATURE SENSOR ...........................................................56
5-8. REPLACEMENT OF THE UPPER AND/OR LOWER WATER MANIFOLDS.....................................57
5-9. REPLACEMENT OF THE COMPRESSOR STARTING CAPACITOR, THE........................................59
OVERLOAD PROTECTOR, AND/OR THE COMPRESSOR RELAY .................................................................59
5-10. REPLACEMENT OF THE THERMAL DISC FOR THE TEMPERATURE SAFETY DEVICE ............ 59
5-11. REPLACEMENT OR CLEANING OF THE WATER FLOW INDICATOR ASSEMBLY..................... 59
5-12. REPLACEMENT OF THE ON/OFF POWER SWITCH.......................................................................... 61
5-13. REPLACEMENT OF THE CELSIUS/FAHRENHEIT SELECTOR SWITCH........................................61
5-14. REPLACEMENT OFATHREE POLE POWERRELAY.......................................................................... 62
5-15. REPLACEMENT OF THE WATER LEVEL SENSOR ASSEMBLY......................................................62
5-16. REPLACEMENT OF THE POWER SUPPLY BOARD........................................................................... 63
5-17. REPLACEMENT OF THE MICROPROCESSOR BOARD AND/OR THE CONTROL PANEL ...........64
5-18. LEAKAGE CURRENT ............................................................................................................................. 65
5-18.1. ARRANGING THE EQUIPMENT .........................................................................................................65
5-18.2. TAKING MEASUREMENTS IN NORMAL POLARITY.........................................................................65
5-18.3 TAKING MEASUREMENTS IN REVERSE POLARITY .........................................................................66
5-19. REFRIGERANT CHECK..........................................................................................................................66
5-20. LOW LIMIT SAFETIES CHECK............................................................................................................. 67
5-22. TROUBLESHOOTING GUIDE ...............................................................................................................70
SECTION 6. PARTS INFORMATION...................................................................................................................81
6-1. INTRODUCTION.....................................................................................................................................81
6-2. ORDERING INFORMATION FOR REPLACEMENT PARTS............................................................... 81
6-3. RECOMMENDED REPLACEMENT PARTS INVENTORY .................................................................81
6-4. RETURNING PARTS UNDER WARRANTY.........................................................................................82
6-5. SHIPPING PARTS....................................................................................................................................82

VIII
ILLUSTRATIONS/SCHEDULES/PARTS LISTS
Figure 1-1 BLANKETROL II Unit - Front View........................................................5
Figure 1-2 BLANKETROL II Unit - Right Side View ...............................................7
Figure 1-3 BLANKETROL II Unit - Rear View........................................................9
Figure 1-4.A. BLANKETROL II Unit - Control Panel.................................................11
Figure 1-4.B. BLANKETROL II Unit - Control Panel.................................................11
Figure 4-1 Maintenance Schedule .......................................................................38
Figure 4-2 Maintenance Checklist .......................................................................40
Figure 5-1 BLANKETROL II Unit - Exposed Rear View.......................................49
Figure 6-1 Parts List A .........................................................................................83
Figure 6-2 BLANKETROL II Unit - Internal Exploded Front View........................84
Figure 6-3 Parts List B ....................................................................................85,86
Figure 6-4 BLANKETROL II Unit - Internal Exploded Rear View.........................87
Figure 6-5 Electrical Wiring Diagram-115V..........................................................88
Figure 6-5A Electrical Wiring Diagram-230V..........................................................89
Figure 6-5B Electrical Wiring Diagram-240V..........................................................90
Figure 6-5C Electrical Wiring Diagram-100V..........................................................91
Figure 6-10 Water Circulation Diagram..................................................................92
Figure 6-11 Refrigeration Flow Diagram.................................................................93
Figure 6-12 BLANKETROL II System Equipment & Accessories........................94

TECHNICAL HELP
United States and Canada Telephone [phone]
Cincinnati Sub-Zero Products, Inc. Toll Free 1-800-989-7373
12011 Mosteller Road Fax [phone]
Cincinnati, OH 45241
AUTHORIZED EUROPEAN REPRESENTATIVE:
CEpartner4U Telephone + 31 (0) 6-516.536.26
Esdoorlnaan 13, 3951 DB Maarn.
The Netherlands
BEFORE YOU CALL FOR SERVICE...
To help us better serve you, please have the serial number of your BLANKETROL II unit ready
when you call for parts or service.
IN-WARRANTY REPAIR AND PARTS
All parts on your BLANKETROL II unit are covered by a two-year warranty. To return defective
parts or units, first obtain a Returned Materials Authorization (RMA) number from our Medical
Technical Service department.
RECEIVING INSPECTION
After unpacking the BLANKETROL II System, be sure to inspect the system for concealed
damage. Retain all packing material and carefully describe or photograph any damage. Notify
the carrier at once and ask for an inspection (in writing). Failure to do this within 15 days may
result in loss of claim. Do not return the equipment to Cincinnati Sub-Zero. Call our Medical
Technical Service department for further instructions.
IMPORTANT SAFETY INFORMATION
Refer to this manual for instructions and caregiver information. Read and understand all
precautionary information before using, prescribing, or servicing the BLANKETROL II unit.

INTRODUCTION BLANKETROL II, 222R
OPERATION MANUAL
2
SECTION 1. INTRODUCTION
1-0. GENERAL SAFETY PRECAUTIONS
To provide the patient maximum safety during the use of the BLANKETROL II hyper-
hypothermia system, a thorough knowledge and understanding of the system, and its correct
application and operating use are required. Each person who is responsible for use or direction of
use of the system, such as physicians, nurses, technicians and operators must read and
understand this operating manual and all precautions and warnings prior to use. It is
recommended this manual be reviewed at least semi-annually as a refresher to safe operation
and application.
1-1. GENERAL DESCRIPTION OF THIS MANUAL
This manual describes the operation, maintenance, and service of the CSZ BLANKETROL II
hyper-hypothermia system. Section One describes the physical and functional characteristics of
the BLANKETROL II System. Section Two describes how to prepare the BLANKETROL II unit for
general use. Section Three describes how to operate the unit in the Manual Control Mode,
Automatic Control Mode, and Monitor Only Mode. Section Four describes the regular
maintenance of the BLANKETROL II unit. Section Five describes Field Repair and Service of the
BLANKETROL II unit. Section Six is a Troubleshooting Guide and Section Seven outlines parts
information.
This manual is prepared for professional personnel who use the equipment for patient care. It is
also intended for technicians and service personnel who are responsible for maintaining the
equipment.

INTRODUCTION BLANKETROL II, 222R
OPERATION MANUAL
3
1-2. GENERAL DESCRIPTION OF THE BLANKETROL II SYSTEM
The CSZ BLANKETROL II (Model 222R) Hyper-Hypothermia System is used to lower or to raise a
patient's temperature and/or maintain a desired patient temperature through conductive heat
transfer. The CSZ BLANKETROL II unit is composed of a heater, a compressor, a circulating
pump, and a microprocessor. This unit requires no field adjustments or calibrations in order to
maintain the precise measurement of temperature and temperature limits.
Water is heated or cooled and pumped from the unit to a blanket. The blanket* rests under
and/or on top of the patient and is designed so that the water circulates through the blanket and
returns to the unit.
If cooled water is circulated through the blanket, the desired effect is to reduce the patient's
temperature. If warmed water is circulated through the blanket, the desired effect is to elevate the
patient's temperature.
The BLANKETROL II unit can be set so that it operates based on the temperature of the
circulating water (Manual Control) or it can be set so that it operates based on the temperature of
the patient (Automatic Control).
* The recommended blanket(s) for use is described in Section (1-5.)
1-3. CLINICAL APPLICATIONS
The BLANKETROL II unit is used primarily in hospital Intensive and Coronary Care Units, in
Operating, Recovery and Emergency Rooms, in Burn Units, and on Medical/Surgical floors. This
hyper-hypothermia system has been used with adult and pediatric patients to produce
normothermia by lowering a patient's elevated temperature or raising a patient's sub-normal
temperature. It can also be utilized to maintain normal body temperature (normothermia) during
surgical procedures.
Surgically, this system has been used to produce moderate to profound hypothermia for such
procedures as amputations, cardiopulmonary by-pass surgery, vascular surgery, and intracranial
surgery. Medically this system has been used to decrease the rate of circulation, to reduce
intracranial pressure, to control cerebral edema, and to reduce oxygen requirements. This
system has also been used in the treatment of burns, shock, cardiac arrest, and gastrointestinal
hemorrhage.
1-4. PHYSICAL DESCRIPTION OF THE BLANKETROL II UNIT
See Section 1.7

INTRODUCTION BLANKETROL II, 222R
OPERATION MANUAL
4
1-4.1. EXTERNAL FEATURES - FRONT VIEW
The external features in Figure (1-1) of the BLANKETROL II unit are described as follows:
A. The control panel is composed of pressure sensitive touch switches and four LED
displays. An expanded description of the control panel is presented in Section
(1-4.4.).
B. The operating instructions are printed directly below the control panel. This layout is
designed to increase the operator's efficient use of the unit.
C. The power switch is a bevel rocker switch labeled ON at the top and OFF at the
bottom. The switch lights up green when ON. A circuit breaker is built-in the switch
to protect against overload conditions.
D. The storage drawer tilts out from the top to provide storage space for items such as
probes, connector cables, connecting hoses, the drain hose, and the Operator's
Manual.
E. The grille permits air to be drawn into the unit and pass over the condenser. The air
is then discharged through the bottom of the unit. The grille should be kept from
being blocked by being cleaned regularly as described in Section (4-4.).
F. The protective bumper guard surrounds the lower edge of the unit and protects the
unit as well as the walls.
G. Four swivel casters (two conductive and two non-conductive locking) are specially
designed to permit the unit to move easily and to prevent it from tipping.
H. The Celsius/Fahrenheit selector switch, abbreviated C/F, is a rocker switch that
permits the operator to select the measurement scale, Celsius or Fahrenheit, by
which the unit functions. Celsius is in the down position and Fahrenheit is in the up
position.
NOTE: The C/F switch is not available on 230V and 240V versions.
I. The water fill opening is where the operator pours distilled water to fill the reservoir.

INTRODUCTION BLANKETROL II, 222R
OPERATION MANUAL
5
FIGURE 1-1. BLANKETROL II, FRONT VIEW

INTRODUCTION BLANKETROL II, 222R
OPERATION MANUAL
6
1-4.2. EXTERNAL FEATURES - RIGHT SIDE VIEW
The external features in Figure (1-2) of the BLANKETROL II unit are described as follows:
A. The water flow indicator is a paddle wheel immersed in the path of the circulating
water with a window to the outside. As water is circulated through the system, it
must pass over the paddle wheel causing it to spin (like a pinwheel). The water
flow indicator provides a visual display of the general rate at which the water is
circulating. For example, if the unit is circulating water but the connecting hose is
pinched, the circulation of the water is restricted. The change in water flow
decreases the speed of the paddle wheel.
A total obstruction of the water path will cause the paddle wheel to stop completely.
B. The recessed handle permits the operator to grip the unit when moving it.
C. The four capped screws on the right and left side of the unit secure the top to the
base.
D. The patient probe jack is where the 400 Series probe is connected to the unit.
Only one patient probe can be connected at a time.
E. Three female, quick-disconnect return couplings on the top row are designed for
water to flow in when the male coupling of the connecting hose is attached.
F. The three male quick-disconnect outlet couplings on the bottom row are designed
for water to flow out when the female coupling of the connecting hose is attached.
G. The power cord with a hospital-grade 3-prong plug should only be inserted into a
properly grounded hospital grade receptacle for 100/115 VAC units and 230/240
VAC units. Electrical Specifications are described in Section (1-7.).

INTRODUCTION BLANKETROL II, 222R
OPERATION MANUAL
7
FIGURE 1-2 BLANKETROL II, RIGHT SIDE VIEW

INTRODUCTION BLANKETROL II, 222R
OPERATION MANUAL
8
1-4.3. EXTERNAL FEATURES - REAR VIEW
The external features in Figure (1-3) of the BLANKETROL II unit are described as follows:
A. The specification label outlines the BLANKETROL II unit's electrical requirements.
B. The maintenance label outlines the periodic checks for the BLANKETROL II unit.
C. Two air vents provide air circulation for the microprocessor.
D. The nylon strap is used to secure and store the coiled power cord when not in use.
E. The rear enclosure panel secured with four screws provides access to the interior.
The panel is removed to perform maintenance, repair, or replacement of
components.
F. The serial number label is permanently attached and located along the bottom of the
unit on top of the bumper guard.

INTRODUCTION BLANKETROL II, 222R
OPERATION MANUAL
9
FIGURE 1-3, BLANKETROL II, REAR VIEW

INTRODUCTION BLANKETROL II, 222R
OPERATION MANUAL
10
1-4.4. EXPANDED DESCRIPTION OF THE BLANKETROL II CONTROL PANEL
The control panel as shown in Figure 1-4.A for 100/115 Volt and 1-4.B for 230/240 Volt is
composed of pressure sensitive touch switches and LED displays.
The control panel is divided into the following Sections:
A. The digital display labeled BLANKET/WATER shows the actual temperature of the
circulating water.
B. The MANUAL CONTROL touch switch is used to activate the unit so that operation
is based on the temperature of the circulating water relative to the Setpoint
temperature.
C. The digital display labeled SETPOINT shows the desired temperature of the water
or the patient as set by the operator.
D. The TEMP SET switch and the Up and Down arrow switches are used to set the
Setpoint display. The amber arrow on the left of the Setpoint display, the amber
arrow on the right of the Setpoint display, the Celsius, and Fahrenheit. Indicator
shows mode and desired temperature scale.
E. The digital display, labeled PATIENT, shows the actual temperature of the patient.
F. The AUTO CONTROL switch is used to activate the unit so that operation is based
on the temperature of the patient relative to the Setpoint temperature.
G. The two switches labeled TEST INDICATORS and SILENCE ALARM are used to
confirm that all the indicators on the control panel are working and to silence the
alarm in certain conditions.
H. The display labeled STATUS reports the status of the unit and/or indicates
changes that the operator should make. The possible status displays are listed in
Section (3-8.). Below the Status display are the three LEDs colored amber, green,
and amber that light up depending on whether the unit is cooling, at setpoint, or
heating.
I. A REMOVE FROM SERVICE indicator is located below the LED and is visible only
if the unit malfunctions in a manner that could be dangerous to the patient and is
not Operator Correctable.
J. The MONITOR ONLY switch is used to set the unit to monitor the temperature of
the patient without heating, cooling or circulating the water.

INTRODUCTION BLANKETROL II, 222R
OPERATION MANUAL
11
FIGURE 1-4.A., BLANKETROL II, CONTROL PANEL, 115 VAC UNITS
FIGURE 1-4.B., BLANKETROL II, CONTROL PANEL, 230-240 VAC UNITS

INTRODUCTION BLANKETROL II, 222R
OPERATION MANUAL
12
1-5. REQUIRED ACCESSORIES
Operation of the BLANKETROL II unit requires the use of the blanket(s) designed to circulate
warm or cool distilled water, a connecting hose with quick-disconnect male and female couplings,
and a 400 Series thermistor probe (if Automatic Control Mode is to be utilized). BLANKETROL II
System Equipment and accessories are listed in on the last page of this manual.
1-6. FUNCTIONAL DESCRIPTION OF THE BLANKETROL II SYSTEM
In the Manual Control Mode, the operator sets the desired temperature of the circulating water.
The unit either heats or cools the water to reach the desired setpoint temperature. The water
circulates through the blanket and either raises or lowers the temperature of the patient. In this
case, the patient's temperature must be closely monitored. There is no constant relationship
between the temperature of the circulating fluid and the temperature of the patient or the change
in temperature of the patient.
In the Automatic Control Mode, the operator sets the desired temperature of the patient. In
addition, the operator must attach a 400 Series probe in or to the patient. The probe is then
inserted into the BLANKETROL II unit. The probe is used to measure the actual temperature of
the patient and this measurement is then compared with the desired Setpoint temperature by the
unit's microprocessor. If the actual patient temperature is lower than the desired patient
temperature, the BLANKETROL II unit heats the circulating water so that the temperature of the
patient is elevated to reach the desired Setpoint. At Setpoint, the unit continues to circulate the
water but the heater ceases to operate. When the patient's temperature falls outside the Setpoint
range, the heater/compressor resumes operation, heating/cooling the water until the patient's
temperature is once again at Setpoint.
If the actual temperature is higher than the desired patient temperature, the BLANKETROL II unit
cools the circulating water so that the temperature of the patient decreases to the desired Setpoint
temperature. At Setpoint, the unit continues to circulate the water, but the compressor stops.
When the patient's temperature falls outside the Setpoint range, the compressor/heater resumes
operation, cooling/heating the water until the patient's temperature is once again at Setpoint.
In addition, the BLANKETROL II unit can be set to operate in a Monitor Only Mode. In this mode,
the 400 Series probe is attached to or inserted into the patient and is connected to the unit. The
operator then sets the BLANKETROL II unit to monitor and display the patient's actual
temperature. In this mode, the unit does not heat, cool, or circulate the water.
1-6.1. HEATING SYSTEM
The BLANKETROL II heating system consists of an immersion heater, water temperature control,
and three high temperature safety devices. Temperature ranges are described in Section (1-6.4.).
The immersion heater is located in the circulating reservoir. The water circulating in the reservoir
flows around the immersion heater and is warmed.