Hemotherm 400MR User manual

R
DUAL RESERVOIR COOLER/HEATER
MODEL 400MR
OPERATION & TECHNICAL MANUAL
Cincinnati Sub-Zero Products, Inc. •12011 Mosteller Road •Cincinnati, Ohio 45241, U.S.A.
In Europe: CEpartner4U •Esdoornlaan 13, 3951 DB Maarn
The Netherlands

I
Caution: Read operation
instructions and manual
before operating
Pum
p
Cool
Heat
Compressor
Water Temp
-
Heat
Water Temp
-
Cool
Temperature Set
Low Water
Test Indicators
Silence Alarm
High Limit
Low Limit
High Heater
Low Heater
Temperature Limit
Operating instructions or
“Important /Caution Information
Decreasing Temperature
Fill to Screen
Increasing Temperature
5V
SYMBOLS
Separate collection for electrical and
electronic equipment
Water Temperature
Risk of Explosion: Do not use in the
Presence of Flammable Anesthetics
Danger; Risk of Electric Shock
Disconnect Power before Servicing
Type B Equipment
~ AC Voltage
Protective Earth (Ground)
CAUTION
Earth (Ground)
Remote Port
Power Cord Holder
Outlet
Return
Drain
Change Water Monthly
Clean Condenser Monthly
Clean Water Filter Quarterly
Equipotentiality

II
HEMOTHERM
®
MODEL 400MR
OPERATION & TECHNICAL MANUAL
The operator must read and understand the Operation & Technical Manual in its entirety
prior to operating the equipment.
Cincinnati Sub-Zero Products, Inc., reserves the right to make equipment changes and
improvements which may not be reflected in this manual.
This document may not be reproduced in whole or in part without written permission from
Cincinnati Sub-Zero Products, Inc.
Federal law restricts this device to use only on the order of a physician.
•Use distilled water only. Failure to use distilled water may result in poor
performance and damage to the Hemotherm unit.
•Do not use De-ionized Water. The majority of de-ionizers do not maintain a
neutral pH of 7. If the de-ionized water is acidic, it will cause a battery effect and
the copper refrigeration line will begin to deteriorate and cause a leak in the
refrigeration system.
•Do not use Reverse Osmosis (R.O.) water in a Hemotherm.
•Do not use alcohol. Alcohol may cause blanket deterioration.
•Do not operate without water to avoid damage to internal components.
•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.
Manual 56234 Rev. Q
DCN # M006-3983 2010-07
CAUTION
CAUTION

III
• Do not use the Hemotherm system in the presence of flammable anesthetics.
Risk of explosion can result.
• Power interruption will cause the Hemotherm unit to revert to FILL MODE Follow
instructions for desired mode to resume operation.
Failure to resume therapy could result in serious injury or death.
The repair, calibration, and servicing of the Hemotherm unit 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 patient
injury and damage to the Hemotherm unit.
Before returning the Hemotherm unit to patient use after repairs, the INITIAL SET-UP
in Section 2 must always be performed.
DANGER
DANGER
DANGER

IV
When warming blankets are used in conjunction with the Hemotherm unit, the
following applies:
• A physician's order is required for setting blanket water temperature and use of
equipment. At least every 20 minutes, or as directed by a 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 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.
WARNING

V
TABLE OF CONTENTS
Page No.
TECHNICAL HELP............................................................................................................1
A UTHORIZED E UROPEAN R EPRESENTATIVE : ...........................................................................1
BEFORE YOU CALL FOR SERVICE... ..............................................................................1
IN-WARRANTY REPAIR AND PARTS...............................................................................1
RECEIVING INSPECTION.................................................................................................1
IMPORTANT SAFETY INFORMATION.............................................................................1
SECTION 1. GENERAL INFORMATION..........................................................................2
1.0 GENERAL SAFETY PRECAUTIONS.....................................................................2
1.1 FUNCTION OF HEMOTHERM MODEL 400MR COOLER/HEATER EQUIPMENT2
1.2 COOLING SYSTEM...............................................................................................2
1.3 HEATING SYSTEM................................................................................................3
1.4 CIRCULATION SYSTEM.......................................................................................4
1.5 GENERAL OPERATION........................................................................................5
1.6 GENERAL SAFETY PRECAUTIONS.....................................................................9
1.7 EQUIPMENT DESCRIPTION AND SPECIFICATIONS..........................................9
1.8 REMOTE CONTROL OPTION...............................................................................9
1.9 CLINICAL APPLICATIONS..................................................................................10
1.10 HEMOTHERM SYSTEM EQUIPMENT & ACCESORIES.....................................10
1.11. HEMOTHERM SYSTEM EQUIPMENT SPECIFICATIONS .................................12
1.11. HEMOTHERM SYSTEM EQUIPMENT SPECIFICATIONS .................................13
1.12. HEMOTHERM CERTIFICATIONS.......................................................................13
SECTION 2. OPERATING INSTRUCTIONS ..................................................................14
2.1 INITIAL SET-UP...................................................................................................14
2.2 CONNECTION PROCEDURE .............................................................................15
2.3 SUGGESTIONS FOR PROTECTING THE RESERVOIR FROM BACTERIA ......18
2.4 BUILT-IN SAFETY PRECAUTIONS.....................................................................19
SECTION 3. GENERAL MAINTENANCE AND REPAIR................................................20
3.1 GENERAL INSTRUCTIONS-MAINTENANCE, REPAIR OR REPLACEMENT OF
COMPONENTS ...............................................................................................................20
3.2 MAINTENANCE OF THE WATER RESERVOIRS...............................................20
3.3 MAINTENANCE OF THE WATER CIRCULATING SYSTEM...............................21
3.4 MAINTENANCE OF THE WATER FILTER..........................................................22
3.5 MAINTENANCE OF THE CONDENSER GRILLE................................................23
3.6 MAINTENANCE OF BLANKETS..........................................................................23
3.7 INSTRUCTIONS FOR REPLACING HEATERS...................................................24
3.8 INSTRUCTIONS FOR REPLACING PUMP HOUSING OR PUMP.......................25
3.9 REPLACING THE SENSOR ................................................................................25
3.10 REPLACING THE MICROPROCESSOR BOARD ...............................................26
3.11 REPLACING THE MEMBRANE CONTROL PANEL............................................27
3.12 REPLACING THE MANIFOLD.............................................................................28
3.13 TROUBLESHOOTING THE COMPRESSOR (115, 230 AND 240 VAC UNITS ) ......29

VI
3.14 TROUBLESHOOTING THE COMPRESSOR (100 VAC UNITS ONLY ) ...................30
3.15 INSTRUCTIONS FOR LEAKAGE CURRENT......................................................31
3.16 HI LIMIT TEST PROCEDURE..............................................................................31
3.17 LOW LIMIT TEST PROCEDURE.........................................................................32
3.18 SUGGESTED PREVENTIVE MAINTENANCE CHECKLIST (AT LEAST
QUARTERLY)..................................................................................................................33
3.19 TROUBLESHOOTING GUIDE.............................................................................34
3.19 TROUBLESHOOTING GUIDE.............................................................................35
3.19 TROUBLESHOOTING GUIDE.............................................................................36
3.19 TROUBLESHOOTING GUIDE.............................................................................37
3.19 TROUBLESHOOTING GUIDE.............................................................................38
3.19 TROUBLESHOOTING GUIDE.............................................................................39
3.19 TROUBLESHOOTING GUIDE.............................................................................40
3.20 MICROPROCESSOR BOARD ERROR CODE TROUBLESHOOTING...............41
SECTION 4 PARTS INFORMATION...............................................................................42
4.1 ORDERING INFORMATION FOR REPLACEMENT PARTS ...............................42
4.2 RECOMMENDED REPLACEMENT PARTS INVENTORY..................................42
4-4. SHIPPING PARTS...............................................................................................43
4-5. EQUIPMENT AND ACCESSORIES ORDER INFORMATION.............................43
F IGURE 4.4 P ARTS L IST FOR THE HEMOTHERM M EMBRANE C ONTROL P ANEL 100/115V .....47
F IGURE 4. 6 P ARTS L IST FOR THE HEMOTHERM E LECTRICAL S UB -P ANEL ...........................49
WORLDWIDE ORDER PLACEMENT .............................................................................58

VII
LIST OF ILLUSTRATIONS
Page No.
Figure 4.1 HEMOTHERM Front & Side View…………………….…………………………...44
Figure 4.2 Parts List for the HEMOTHERM - Front & Side View…………….....................46
Figure 4.3 HEMOTHERM – Membrane Control……….......................................................46
Figure 4.4 Parts List for the HEMOTHERM Membrane Control Panel 100/115V...……...47
Figure 4.5 HEMOTHERM - Electrical Sub-Panel………………...…………………...……...48
Figure 4. 6 Parts List for the HEMOTHERM Electrical Sub-Panel…………………………49
Figure 4. 7 HEMOTHERM - Rear View………...………………………………..…………….50
Figure 4. 8 Parts List for HEMOTHERM - Rear View…………...........................................51
Figure 4.9 HEMOTHERM - Electrical Schematic 115 Volt…..……………………...……....53
Figure 4.10 HEMOTHERM Electrical Schematic 230 Volt……………………………….….54
Figure 4.11 HEMOTHERM - Electrical Schematic 240 Volt…………………………...........55
Figure 4.12 HEMOTHERM - Electrical Schematic 100 Volt…………………………...……56
Figure 4.13 HEMOTHERM - Water Circulation Diagram…...…………………………........56
Figure 4.14 HEMOTHERM - Refrigeration Flow Diagram…………...…………………….. 57

OPERATING INSTRUCTIONS HEMOTHERM MODEL 400MR,
OPERATION/TECHNICAL MANUAL
1
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
Esdoornlaan 13, 3951 DB Maarn
The Netherlands
BEFORE YOU CALL FOR SERVICE...
To help us better serve you, please have the serial number of your Hemotherm unit
ready when you call for parts or service.
IN-WARRANTY REPAIR AND PARTS
All parts on your Hemotherm unit are covered by a one-year warranty. To return
defective parts or units, first obtain a Returned Materials Authorization (RMA) number
from our Medical Technical Service department. A Hemotherm shipping carton will be
sent to you, if needed.
RECEIVING INSPECTION
After unpacking the Hemotherm 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 Hemotherm unit.

OPERATING INSTRUCTIONS HEMOTHERM MODEL 400MR,
OPERATION/TECHNICAL MANUAL
2
SECTION 1. GENERAL INFORMATION
1.0 GENERAL SAFETY PRECAUTIONS
To provide the patient maximum safety during the use of the HEMOTHERM
Cooler/Heater system, a thorough knowledge and understanding, and the correct
application and operating use of the system is required. Each person who is responsible
for the use or the 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 that this manual be reviewed at least semi-
annually as a refresher to safe operation and application.
1.1 FUNCTION OF HEMOTHERM MODEL 400MR COOLER/HEATER EQUIPMENT
The CSZ HEMOTHERM Model 400MR Cooler/Heater system is used to lower/raise the
blood temperature and/or maintain blood temperature, as required, through conductive
heat transfer. The conductive heat transfer is accomplished through any type of Blood
Oxygenator/Heat Exchanger unit, along with the use of a blanket under the patient for the
re-warming phase, if desired. The complete system usually comprises of the
HEMOTHERM Cooler/Heater unit and reusable or disposable blanket on the O. R. Table-
Adult, Pediatric, or Infant size. Available blankets are : the reusable PLASTIPAD
®
blankets (polyurethane) and the disposable MAXI-THERM
®
, MAXI-THERM
®
LITE, and
TEMP PAD
®
blankets.
The operator of the unit regulates the desired fluid temperature. Frequent observation of
the actual blood temperature is required.
1.2 COOLING SYSTEM
The HEMOTHERM 400MR cooling system consists of:
1. A mechanically refrigerated water-to-refrigerant heat exchanger.
2. Chilled water reservoir.
3. Water re-circulation pump.
4. Microprocessor control system.
5. Low temperature safety.
6. Low water cut off safety.

OPERATING INSTRUCTIONS HEMOTHERM MODEL 400MR,
OPERATION/TECHNICAL MANUAL
3
With a capacity to lower the water temperature at a 2°C/minute rate, a reduction of blood
temperature is produced. It is important to remember that there is no direct relationship
between this and the rate of change in the blood temperature. The re-circulation pump
and water flow circuitry have been designed for high flow rate to maximize the blood-to-
water heat transfer efficiency.
The cooling system's temperature controller allows the operator to set the temperature
range from +3°C to +32°C. An independent Low Limit Safety in the microprocessor
board provides the low limit safety function and is factory preset at 2°C.
1.3 HEATING SYSTEM
The CSZ HEMOTHERM heating system consists of:
1. 300 Watt Heater.*
2. 1200 Watt Heater.*
3. Microprocessor control system.
4. Hot water reservoir.
5. Water re-circulation pump.
6. High temperature safety.
7. Low water cut off switch.
When in the cool mode, the 300 Watt heater will pre-warm the heat bath to the desired
temperature set for that reservoir. While in the heat mode, the bath is heated with both
heaters or 1500 watts of heat. The water temperature will increase at a rate of
approximately 2.5°C/minute. It is important to rem ember that there is no direct
relationship between this and the rate of change in the blood temperature.
The high temperature safety is designed to shut off the heaters at 44°C. If the controller
should happen to fail at the 42°C set point, a high temperature LED warning light on the
control panel will illuminate and alarm at 44°C. I f this should occur, the system should be
inspected by the hospital's maintenance or engineering department. The heating system
will come back on after approximately a 1°C tempera ture drop.
* 230/240 VAC units have one 800 watt heater and one 1200 watt heater.

OPERATING INSTRUCTIONS HEMOTHERM MODEL 400MR,
OPERATION/TECHNICAL MANUAL
4
1.4 CIRCULATION SYSTEM
The HEMOTHERM 400MR circulation system consists of:
1. Two water reservoirs.
Cool Reservoir - (8 qts. - 7.6 liters)
Heat Reservoir - (6 qts. - 5.7 liters)
2. One magnetic-drive recirculation pump.
3. Four water flow control valves - solenoid operated.
4. One water filter.
5. Six external interfacing quick-disconnect couplings.
6. Interconnecting piping, internal.
Selection of the operation mode (heat or cool) determines which water flow circuit is
used.
HEATING MODE: Pump draws water from the warm water reservoir and
circulates it through the water filter to the external outlet couplings connected to
the device in use (Blood Oxygenator/Heat Exchanger and/or blanket). Returning
water flows back into the same (warm) water reservoir.
COOLING MODE: Pump draws water from the cooled water reservoir and
circulates it through the water filter to the connected external device(s). Returning
water flows back into the cooled water reservoir. The circulation system operates
with distilled/sterile water.
DO NOT USE DEIONIZED WATER. No alcohol or ethylene glycol (antifreeze)
required.
Flow rate capacity is as follows:
Through 1/2" self-sealing Hansen fittings: approximately 3.5 GPM
(13 liters/minute).*
Through adult blanket: approximately 32 GPH (100 liters/hour).
* Flow rate will vary depending upon brand and model number of heat exchanger used
and also upon length of tubing leading to and from heat exchanger.

OPERATING INSTRUCTIONS HEMOTHERM MODEL 400MR,
OPERATION/TECHNICAL MANUAL
5
1.5 GENERAL OPERATION
1. Collect all Supplies and Equipment:
A. HEMOTHERM Cooler/Heater unit: include connecting hoses to the heat
exchanger making sure that all connections are tight.
B. Hyper-Hypothermia blanket: make sure that there are no leaks.
Instructions for repairing the blanket can be found under Maintenance of
Blankets, Section 3.4.
2. Place HEMOTHERM unit in O.R. suite as close to the heat exchanger as
possible.
3. Read the operating instructions on the membrane control panel. Familiarize
yourself with the name and location of all features and controls shown in
Figure 4.4.
4. Check the level of the distilled/sterile water in both fluid reservoirs to make
certain they are filled to where water can be seen in bottom of the strainer.
(Heat reservoir holds 6 qts. (5.7 liters) and the Cool reservoir holds 8 qts (7.6
liters). It is necessary to add a little water after each use to replace water
thrown away in disposable heat exchanger and Hyper-Hypothermia blanket if
a disposable blanket was used.
5. Make sure the power switch is in the "OFF" position.
6. Inspect the hospital grade plug for bent or missing prongs. Insert the plug
into a properly grounded, securely mounted receptacle. Grounding reliability
can only be achieved when connected to an equivalent hospital grade
receptacle. Do not bypass the third or grounding prong. An electrical hazard
may result if it is bypassed, removed, or otherwise rendered useless.
7. Lay the Hyper-Hypothermia blanket flat on the O.R. table with hose
attachment coming off the table as close as possible to where the
HEMOTHERM unit will be placed. Cover the blanket with a sheet, or bath
blanket.
8. Test-Indicators: Energize and De-energize all display segments and all red
LED's. Press the power switch to the "ON" position.

OPERATING INSTRUCTIONS HEMOTHERM MODEL 400MR,
OPERATION/TECHNICAL MANUAL
6
NOTE: The HEMOTHERM unit will go through a two second self calibration
procedure with both displays blank and then through a fill mode for
approximately forty seconds. The displays will show FI on the Heat side and
LL on the Cool side spelling out FILL. This allows the unit to calibrate itself
and prime the pump automatically.
A. Press "HEAT" or "COOL" for desired mode of operation. (Flashing
Temperature is set point; Non-Flashing is actual reservoir temperature).
Preset temperatures are 3°C -cooling; 42°C -heating .
B. Select Cool - cool display will flash when below 10°C until pump switch is
activated. Then it will display actual water temperature and the
compressor will start up.
C. If you wish to change the setting, depress the "Temp Set" switch. The
display will flash the previous set point temperature or 3°C if the unit has
just been turned on.
NOTE: You have five seconds to depress one of the arrows or the
temperature readout will return to the actual reservoir temperature.
Depress either the "up" or "down" arrow to raise or lower the set point
temperature to the desired setting.
D. Depress the "Cool" switch. When ready to circulate the water, depress the
pump switch.
The temperature cannot be set below 10°C without ac tivating the "Pump" switch. If
the operator attempts to do so, the set point temperature will flash until the "Pump"
switch is activated. Then it will display the actual temperature and the compressor
will activate.
E. To prewarm the heat reservoir while cooling to the desired water
temperature, press the "Temp Set" switch. The display will flash the
previous set point temperature or 42°C if the unit has just been turned on.
NOTE: You have five seconds to depress one of the arrows or the
temperature readout will return to the actual reservoir temperature.
Depress either the "up" or "down" arrow to raise or lower the set point
temperature to the desired setting.
WARNING

OPERATING INSTRUCTIONS HEMOTHERM MODEL 400MR,
OPERATION/TECHNICAL MANUAL
7
NOTE: When the compressor cycles off, both heaters come on until the
temperature of the heat reservoir is within 1°C of the set point. If the
compressor cycles back on, only the 300 watt heater remains on for 100
and 115 VAC units. (See * for 230/240 VAC units.)
F. The unit will not cool below 10°C unless the pump is activated.
G. Select the "HEAT" switch. Depress the "Temp Set" switch. The display
will flash the previous set point temperature or 42°C if the unit has just
been turned on.
NOTE: You have five seconds to depress one of the arrows or the
temperature readout will return to the actual reservoir temperature.
Depress either the "up" or "down" arrow to raise or lower the desired
setting. Depress the heat switch.
H. When ready to circulate the water, depress the "pump" switch.
9. After the cool bath is preconditioned, proceed to connect your heat
exchanger to the 1/2" self-sealing Hansen fittings.
NOTE: You may want to turn off the pump or the flow indicator shut-off valve
first if you choose not to circulate cool water through the heat exchanger at
this time.
10. Check physician's instructions to determine the desired cooling and
heating temperatures.
11. At this point, you may choose to maintain normal body temperature (Step 12)
or you may choose to cool the blood (Step 13).
12. Maintain normothermia by setting the desired temperature, depressing the
heat switch, and making sure the pump is on. The "HEAT" temperature
displayed is the fluid temperature circulating through the heat exchanger and
the Hyper-Hypothermia blanket (if you choose to use a blanket).
NOTE: Both the 300 watt low heater and the 1200 watt high heater will cycle
on and off to maintain the set point temperature for 115 VAC units. (See * for
230/240 VAC units.)
* 230/240 VAC units have an 800 watt and a 1200 watt heater.

OPERATING INSTRUCTIONS HEMOTHERM MODEL 400MR,
OPERATION/TECHNICAL MANUAL
8
13. Cool the blood by setting the desired fluid temperature. Using the cool mode
"temp set", you may choose 3°C for better efficienc y. The "COOL"
temperature displayed is the fluid temperature circulating through the heat
exchanger.
NOTE: The compressor will cycle on and off to maintain the set point
temperature.
14. Maintain final hypothermia temperature by resetting the Cool set point
temperature to 10°C and turning off the pump when you reach the
hypothermia temperature desired. If the temperature should tend to rise,
reactivate the pump allowing the cool water to circulate through the heat
exchanger and as a result bring the blood temperature down again.
NOTE: Preset your hot bath temperature to the desired initial rewarming
temperature.
15. For 115 VAC units, rewarm by activating the "HEAT" switch and resetting the
set point temperature to the desired water temperature. Both the 300 watt
and the 1200 watt heaters will activate giving you a maximum of 1500 watts
of heat to raise the hot bath fluid temperature to the set point temperature. At
this point, if desired, connect your Hyper-Hypothermia blanket to the 1/8"
Hansen fittings of the HEMOTHERM unit to maximize rewarming efficiency.
(See * for 100 VAC and 230/240 VAC units.)
16. If you happen to overshoot your desired "COOL" bath temperature, you may
push the "HEAT" switch for five to ten seconds allowing the water in the water
lines and heat exchanger to empty into the "HEAT" bath and fill up with warm
water. Switching back to the "COOL" mode will allow warm water in the
water lines and heat exchanger to be dumped into the "COOL" bath, in turn
warming the temperature of that bath a few degrees (1°- 6°C) depending on
the difference in temperature between the two reservoirs. The same can be
done if you overshoot your desired hot bath temperature.
17. To discontinue operation, simply turn off the power switch and disconnect all
lines leading to the heat exchanger and blanket from the HEMOTHERM unit.
* 100/115 VAC units have a 300 watt and a 1200 watt heater. 230/240 VAC
units have one 800 watt and one 1200 watt heater.

OPERATING INSTRUCTIONS HEMOTHERM MODEL 400MR,
OPERATION/TECHNICAL MANUAL
9
1.6 GENERAL SAFETY PRECAUTIONS
If water is found leaking into or around the HEMOTHERM unit prior to or during the
operating procedure discussed here, immediately disconnect power to the unit and
correct the malfunction before proceeding.
Before performing any disassembly procedure, unplug power cord from receptacle.
High and low temperature limiting thermostats are preset at the factory and should
perform satisfactorily for the life of the HEMOTHERM unit. Except for refrigeration
component repairs, the repair and servicing of the HEMOTHERM unit requires no special
tools. However, no attempt should be made to perform any of the repairs or service
procedures outlined in this manual unless the proper skills and knowledge are
possessed.
Exercise extreme caution if this equipment is used on electrically susceptible patients
(probe, catheter or electrodes directly connected to the heart). Always test for current
leakage before use. Additional warnings are expressed at appropriate points in the
manual.
1.7 EQUIPMENT DESCRIPTION AND SPECIFICATIONS
Equipment descriptions and specifications for the HEMOTHERM Cooler/Heater System
are included in Sections 1.10 and 1.11. They are subject to change without notice.
1.8 REMOTE CONTROL OPTION
All HEMOTHERM units manufactured after serial # 891-9327M are equipped with a
remote control port. The 25 pin sub-d port connection is located on the right side of the
unit, above the circuit breaker. If the remote control option is purchased, the "assembly"
will include a mating 25 foot cable, the remote control unit, and a mounting clamp.
To install the remote control option, first turn the HEMOTHERM unit power switch off.
Mount the remote control in a convenient place utilizing the universal mounting clamp
provided. Connect the cable between the two devices and lock in place by tightening the
thumb screws attached to the cable. The remote control will operate the same as the
main membrane control panel located on the HEMOTHERM.
NOTE: The display on the remote control will be "blank" during the initial forty second
fill mode.

OPERATING INSTRUCTIONS HEMOTHERM MODEL 400MR,
OPERATION/TECHNICAL MANUAL
10
1.9 CLINICAL APPLICATIONS
The HEMOTHERM Dual Reservoir Cooler/Heater was designed specifically for use in the
extracorporeal circuit. The unit is a self contained temperature control device designed
to deliver chilled or heated water to the blood heat exchanger in the cardiopulmonary
bypass circuit.
The HEMOTHERM Cooler/Heater will develop and maintain temperatures in adults by
utilizing the full range of controllability between 3°C - 42°C.
There are many variables that affect the heating or cooling of the patient in the
extracorporeal circuit. Some of these include the patient's weight, blood flow, gas flow
and oxygenator/heat exchangers. The HEMOTHERM Cooler/Heater has been designed
to provide high water flow rates at low pressure for safe and highly efficient operation with
all currently available heat exchangers.
The HEMOTHERM Cooler/Heater can help maintain normal body temperature
(normothermia) particularly during lengthy surgical procedures or where the ambient
(room) temperature is set low. This can be done with the use of a Hyper-Hypothermia
blanket underneath the patient.
1.10 HEMOTHERM SYSTEM EQUIPMENT & ACCESORIES
Cat. No. HEMOTHERM Equipment
400MR HEMOTHERM Dual Reservoir Cooler/Heater
414 Remote Control
410 Protective Dust Cover
420 Flow Indicator with Shutoff Valve Assembly
UMC-1 Universal Mounting Clamp
MAXI-THERM
®
Single-Patient Use Blankets (Vinyl)
Contents: 20 Blankets per case (4 Cartons of 5 Each)
276 Adult/O. R. Table Size (24" x 60")
274 Pediatric Size (22" x 30")
273 Infant Size (12" x 18")
286 9' Connecting Hose
(Extra Length Hoses Available)
MAXI-THERM
®
LITE Single Patient Use Blankets
876 Adult/O.R. Table Size (25” x 64”)
874 Pediatric Size (25” x 33”)
873 Infant Size (12.5” x 18”)