CSZ MICRO-TEMP LT 749 User manual

MICRO-TEMP LT
Operation and Technical Manual
Model 749 Localized Therapy Units
Cincinnati Sub-Zero Products, LLC. 12011 Mosteller Road Cincinnati, Ohio 45241, U.S.A.
www.cszmedical.com


OPERATION AND TECHNICAL MANUAL MICRO-TEMP®LT, Model 749
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MICRO-TEMP®LT, MAXI-THERM®, MAXI-THERM®LITE, PLASTIPAD®, GELLI-ROLL®, and
TEMP-PAD® are registered trademarks of Cincinnati Sub Zero Products, LLC., Cincinnati, Ohio
USA.
©Copyright 2016, Cincinnati Sub-Zero Products, LLC. All rights reserved.
Manual 57203 Rev. V
ECN: M1906-5627

OPERATION AND TECHNICAL MANUAL MICRO-TEMP®LT, Model 749
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MICRO-TEMP®LT Symbols / Definitions
Temperature Set
Low Water Level
Water
Temperature
Temperature Set
Point Indicator
Increasing
Temperature
Decreasing
Temperature
OFF / ON Switch
O / I
CAUTION
AC Voltage
Power Failure
Fuse
~
Risk of Explosion:
Do not use in the
Presence of Flammable
Anesthetics
Disconnect Power Before
Servicing
Danger; Risk of
Electric Shock
Separate Disposal for Electrical
/ Electronic Equipment
Attention: Read
Operation Instructions
and Manual Before
Operating
ESD
Susceptibility
Type BF
Equipment
Equipotentiality
Earth (Ground)
INCREMENT
(Increase
Temperature)
DECREMENT
(Decrease
Temperature)
Temperature Set
Display
Celsius

OPERATION AND TECHNICAL MANUAL MICRO-TEMP®LT, Model 749
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MICRO-TEMP®LT
OPERATION AND TECHNICAL MANUAL
Cincinnati Sub-Zero Products, LLC., reserves the right to make equipment changes and improvements, which
may not be reflected in this manual.
WARNING
Failure to properly monitor patient may result in serious injury or death.
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 integrity of areas in
contact with blanket; also, check the Micro-Temp® LT’s water temperature. Pediatric patients,
temperature-sensitive patients with vascular disease, surgical patients, diabetics and patients with
Raynaud’s Disease are at greater risk for developing tissue injuries, and this should be considered
when selecting the temperature, duration of therapy and frequency of skin checks. Notify the
physician promptly of any change in patient status in order to avoid serious injury or death.
If device is used at home, patient must follow directions prescribed by their physician and be aware
of all warnings and cautions mentioned throughout the manual. Failure to do so may result in
patient injury.
Thermal injury may occur if heating/cooling blankets are used with a patient with an ischemic
limb.
Observe patient’s skin condition frequently due to individual differences in sensitivity and
susceptibility to injury from heat and/or externally applied chemicals or pressure. Patients at
greatest risk are those unconscious, on prolonged therapy, diabetics, children, and persons
incapacitated, with sensitive skin areas, or poor circulation. Failure to do so may result in
patient injury.
Do not use for ECMO (Extracorporeal Membrane Oxygenation) therapy as patient injury
may occur.
The method of temperature control provided by all localized heat therapy units presents the danger
of heating body tissues, particularly the skin, to a point where they are injured, i.e., burns. The
clinician is responsible for determining the appropriateness of the temperature limits in
dependency to time. Exceeding 40°C water temperature for extended periods can cause tissue
damage and burns. Clinical judgment should be used to determine the safe maximum contact
periods based on patient age, clinical condition, and current medications. Depending on the
extent and severity of a burn, very serious complications may arise.
Prevent excessive and/or prolonged tissue pressure and shearing forces, especially over bony
prominences. Failure to do so may result in tissue injury.
Do not wrap pad so tightly as to constrict blood flow. Patient injury may result.
Do not use pins to secure pad or hoses. Do not allow pad or hoses to come in contact with any
sharp object. Water leak may occur, and water leaks could lead to electric shock and/or
infection.
Do not place additional heat sources between the patient and pad. Skin damage may result.
Improper repair and inadequate maintenance can result in damage to the MICRO-TEMP®LT
system and patient injury.
Any time water is found leaking into or around the unit, connecting hose, and/or pad, turn the unit
off, disconnect the power cord from its power source, and correct the problem before proceeding.
Proper maintenance procedures should be followed including, but not limited to, the preventative
maintenance described in this manual. Leaky blankets or hoses should never be used. Water
leaks could lead to electric shock.

OPERATION AND TECHNICAL MANUAL MICRO-TEMP®LT, Model 749
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WARNING
Leaky pads or hoses, as well as unapproved pads should never be used. Water leaks present
a risk of infection and should be handled accordingly.
Do not use the MICRO-TEMP®LT system in the presence of flammable anesthetics. Risk of
explosion can result.
For continued protection against risk of fire, replace only with same type and rating of fuse.
Electrical hazards may result.
This device is still energized when the inlet switch is in the off position. To completely
disconnect the device from the power source, remove the appliance plug from the back of the
unit. Electrical hazards may result.
Always unplug the unit before accessing internal components during service. Failure to unplug
the unit could result in electric shock.
Do not by-pass ground on power cord plug. Electrical Hazards may result.
Working with electronic boards, plugs, and cables requires delicate handling. Proper
Electrostatic Discharge (ESD) procedure should be followed during replacement of any
electronic board.
Use only CSZ provided hospital grade power cord assembly and used in conjunction with
a properly grounded receptacle or electric shock may result.
Do not position unit near any objects that can generate a strong electrical/magnetic field. If
interference is observed, re-locate the unit away from such devices. Potential electromagnetic
interference may result.
Keep air vents free of debris and obstruction. Keep unit, specifically the air vents, away from
curtains or other obstructions. Blockage of vents could result in the unit overheating which
could render the unit unable to provide adequate therapy and excessive surface
temperatures could cause injury of patient or operator.
Remove the MICRO-TEMP®LT from service if the outer casing or membrane control panel is
cracked or internal components are exposed. Contact with internal components could result
in electric shock or thermal injury to the patient or operator and exposure to sharp edges.
Before returning the MICRO-TEMP®LT to patient use after repairs, the MAINTENANCE
CHECKLIST in Section 4 must always be performed. Improper repair and inadequate
maintenance can result in system damage and patient injury.
The repair, calibration, and servicing of the MICRO-TEMP®LT 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 system
damage and patient injury.
ALL ground wires must be connected. Improper grounding may result in electric shock.
The warming of transdermal medications (patches) can increase drug delivery, resulting in
possible injury to the patient.
To avoid risk of electric shock, this equipment must only be connected to a supply mains with
protective earth.
Do not use the Micro-Temp®LT system distal to arterial cross clamping. Thermal injury may
result.
Proper sanitation procedures must be practiced and hygienic safety must be maintained, to
prevent contamination. Contamination can affect patient’s health, i.e. skin irritation/rash or sepsis
and infection may result.
Materials of good thermal conductivity, such as water, gel and similar substances on the blanket,
with the MICRO-TEMP®LT not switched on may decrease the temperature of the patient.

OPERATION AND TECHNICAL MANUAL MICRO-TEMP®LT, Model 749
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WARNING
Placing materials with high insulation properties (pillows, etc.) between the heated pad and the
patient may reduce therapy to the patient.
Complete folding of pad may restrict flow and reduce therapy to patient.
CAUTION
Federal law restricts this device to sale by or on the order of a licensed healthcare professional.
(US)
Always drain the MICRO-TEMP®LT to a sanitary drain because bio-contaminants may be
present in the unit’s water supply.
Do NOT fill the reservoir to the bottom of the strainer if there is water in the pad. This could cause
an overflow when the unit is turned on.
Do not operate pump without a pad connected or with pad clamps in the “CLOSED” position.
Always check clamps to make sure they are fully open.
The pad surface should be checked for freedom from mechanical damage prior to each
application.
Make sure hose and pads are free of kinks that might restrict flow.
Check hose couplings to be certain they are properly locked together.
Follow pad instructions and Hospital/Physician instructions for applying, storing, and disposal of
product.
Do not use alcohol. Alcohol may cause pad and unit deterioration.
Use distilled water only. Do Not Use De-Ionized water or tap water. Failure to use distilled
water may result in poor performance and damage to the MICRO-TEMP®LT.
For safe handling and use of chemicals, follow manufacturer guidelines. Users should not use
cleaning or decontamination methods different from those recommended by CSZ without first
checking with CSZ that the proposed methods will not damage the equipment.
The display may blank momentarily during an electrostatic discharge (ESD) event, but the
essential performance of the unit is not affected and no harm will occur to the patient. If an
electrostatic discharge (ESD) event occurs, check to see if unit is operating properly. If unit does
not return to previous operation, turn unit off then back on and reset temperature settings as
prescribed.
If a means is needed in retaining a patient either on or under a CSZ Hyper-
Hypothermia Blanket or the Connecting Hose, the means should not block the fluid
pathways of the MICRO-TEMP®LT unit.
No modification of this equipment is allowed without prior, written authorization from CSZ.

OPERATION AND TECHNICAL MANUAL MICRO-TEMP®LT, Model 749
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Table of Contents
TABLE OF CONTENTS ..................................................................................................................................7
BEFORE YOU CALL FOR SERVICE ...........................................................................................................10
IN-WARRANTY REPAIR AND PARTS.........................................................................................................10
RECEIVING INSPECTION ............................................................................................................................10
IMPORTANT SAFETY INFORMATION........................................................................................................10
1-0. GENERAL SAFETY PRECAUTIONS ..............................................................................................11
1-1. GENERAL DESCRIPTION OF THIS MANUAL................................................................................11
1-2. GENERAL DESCRIPTION OF THE MICRO-TEMP®LT SYSTEM ..................................................11
1-3. PHYSICAL DESCRIPTION OF THE MICRO-TEMP®LT UNIT..............................................................12
1-3.1. EXTERNAL FEATURES - FRONT VIEW ............................................................................12
1-3.2. EXTERNAL FEATURES - REAR VIEW ..............................................................................14
1-3.3. EXTERNAL FEATURES –MEMBRANE CONTROL PANEL .......................................16
1-4. REQUIRED ACCESSORIES .................................................................................................................18
1-5. FUNCTIONAL DESCRIPTION OF THE MICRO-TEMP®LT SYSTEM...................................................18
1-5.1. THEORY OF OPERATION ..................................................................................................18
1-5.2. HEATING SYSTEM..............................................................................................................18
1-5.3. CIRCULATING SYSTEM .....................................................................................................18
1-5.4. TEMPERATURE SAFETY CONTROL SYSTEM ................................................................19
SECTION 2. GENERAL PREPARATION OF THE MICRO-TEMP®LT SYSTEM.......................................20
2-1. INTRODUCTION...............................................................................................................................20
2-2. UNPACKING THE SHIPMENT.........................................................................................................20
2-3. FIRST TIME SET-UP/SYSTEM TEST ROUTINE .............................................................................20
2-3.1. INSPECTING AND ARRANGING THE EQUIPMENT.........................................................20
2-3.2. COMPLETING A SYSTEM TEST ROUTINE.......................................................................21
2-4. UNIT AND PATIENT RELATED PRECAUTIONS............................................................................23
2-5. PATIENT PREPARATION AND BEDSIDE CARE...........................................................................23
SECTION 3. OPERATING THE MICRO-TEMP®LT UNIT...........................................................................25
3-1. INTRODUCTION...............................................................................................................................25
3-2. ARRANGING THE SYSTEM COMPONENTS..................................................................................25
3-3. OPERATING THE MICRO-TEMP®LT SYSTEM ..............................................................................27
3-4. CONCLUDING LOCALIZED HEAT THERAPY TREATMENT ........................................................28
3-5. STATUS DISPLAY AND INDICATOR MESSAGES ........................................................................29
SECTION 4. GENERAL MAINTENANCE OF THE MICRO-TEMP®LT SYSTEM......................................31
4-1. INTRODUCTION...............................................................................................................................31
4-1.1. TEST EQUIPMENT REQUIRED.....................................................................................31
4-2. MAINTENANCE OF THE WATER RESERVOIR .............................................................................33
4-2.1. DRAINING THE RESERVOIR..............................................................................................33
4-2.2. REPLENISHING THE RESERVOIR ....................................................................................33
4-2.3. DISINFECTION/DRY STORAGE PROCEDURE FOR CIRCULATING WATER UNITS..34
4-3. MAINTENANCE OF THE MICRO-TEMP®LT UNIT EXTERIOR –CLEANING INSTRUCTIONS...........................36
4-4. DISPOSAL OF THE LOCALIZED HEAT THERAPY PADS.............................................................36
4-5. CURRENT LEAKAGE TEST...............................................................................................................36
4.6 GROUND CONTINUITY TEST...............................................................................................................37
4.7 FLOW RATE TEST.................................................................................................................................37
4.8 >1°C (2°F) OVER SET POINT CHECK..................................................................................................38
4.9 TEMPERATURE ACCURACY CHECK.................................................................................................38
4.10 HIGH LIMIT SAFETY CHECK..............................................................................................................39
4.11 LOW WATER INDICATOR CHECK.....................................................................................................39
4.12 POWER FAILURE INDICATOR CHECK.............................................................................................40

OPERATION AND TECHNICAL MANUAL MICRO-TEMP®LT, Model 749
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4.13 TILT SWITCH INDICATOR CHECK.....................................................................................................41
SECTION 5. FIELD REPAIR/SERVICE OF THE MICRO-TEMP®LT UNIT................................................41
5-1. INTRODUCTION...............................................................................................................................42
5-2. ACCESS TO THE INTERIOR OF THE MICRO-TEMP®LT UNIT .........................................................44
5-2.1. SEPARATING THE FRONT AND REAR ENCLOSURES ..................................................44
5-2.2. RECONNECTING THE FRONT AND REAR ENCLOSURES.............................................44
5-2.3. DISCONNECTING THE CABLES FROM THE CONTROL BOARD ..................................45
5-2.4. DISCONNECTING THE CABLES FROM THE DISPLAY BOARD.....................................45
5-3. REPLACEMENT OF THE HEATER......................................................................................................46
5-4. REPLACEMENT OF THE PUMP..........................................................................................................47
5-5. REPLACEMENT OF THE RESERVOIR...............................................................................................49
5-6. REPLACEMENT OF THE TWIN BLACK TUBING...............................................................................50
5-7. REPLACEMENT OF THE WATER TEMPERATURE SENSOR (THERMISTOR)................................50
5-8. REPLACEMENT OF THE I/O POWER SWITCH..................................................................................51
5-9. REPLACEMENT OF FUSES IN THE I/O POWER SWITCH.................................................................53
5-10. REPLACEMENT OF THE WATER LEVEL SENSOR ASSEMBLY....................................................53
5-11. REPLACEMENT OF THE CONTROL BOARD AND/OR DISPLAY BOARD AND/OR THE
MEMBRANE CONTROL PANEL ..................................................................................................................55
5-12. TROUBLESHOOTING GUIDE............................................................................................................57
SECTION 6. PARTS INFORMATION ..........................................................................................................62
6-1. INTRODUCTION....................................................................................................................................62
6-2. ORDERING INFORMATION FOR REPLACEMENT PARTS...............................................................62
6-3. RECOMMENDED REPLACEMENT PARTS INVENTORY..................................................................62
6-4. RETURNING PARTS UNDER WARRANTY.........................................................................................63
6-5. SHIPPING PARTS ................................................................................................................................63
SECTION 7. SPECIFICATIONS AND CERTIFICATIONS OF THE MICRO-TEMP®LT.............................70
WORLDWIDE ORDER PLACEMENT...........................................................................................................75

OPERATION AND TECHNICAL MANUAL MICRO-TEMP®LT, Model 749
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Table Of Figures
Figure 1-1 Micro-Temp®LT –Front View ................................................................................................................ 13
Figure 1-2 Micro-Temp®LT –Rear View.................................................................................................................. 15
Figure 1-3 Micro-Temp®LT –Membrane Control Panel (100V/115V Only) ............................................................. 17
Figure 1-4 Micro-Temp®LT –Membrane Control Panel (230V/240V Only) ............................................................. 17
Figure 5-1 Micro-Temp®LT –Exposed Rear View .................................................................................................... 43
Figure 6-1 Micro-Temp®LT Internal Exploded - Front View .................................................................................... 64
Figure 6-2 Micro-Temp®LT - Parts List A ................................................................................................................. 64
Figure 6-3 Micro-Temp®LT –Internal Exploded –Rear View .................................................................................. 65
Figure 6-4 Micro-Temp®LT - Parts List B ................................................................................................................. 65
Figure 6-5 Micro-Temp®LT Reservoir –Side View .................................................................................................. 66
Figure 6-6 Micro-Temp®LT - Parts List C ................................................................................................................. 66
Figure 6-7.A Micro-Temp®LT Electrical Wiring Diagram –100V/115V .................................................................... 67
Figure 6-7.B Micro-Temp®LT Electrical Wiring Diagram –230V/240V .................................................................... 68
Figure 6-8 Micro-Temp®LT Accessories .................................................................................................................. 69
Table 1 Guidance and Manufacturer’s Declaration – Electromagnetic Emissions.................................................... 72
Table 2 Guidance and Manufacturer’s Declaration – Electromagnetic Immunity .................................................... 72
Table 3 Guidance and Manufacturer’s Declaration– Electromagnetic Immunity that is not used for Life Support .. 73
Table 4 –Recommended Separation Distances Between Portable and Mobile RF Communications Equipment and
the Micro-Temp®LT, Model 749............................................................................................................................. 74

TECHNICAL HELP MICRO-TEMP®LT, Model 749
OPERATION AND TECHNICAL MANUAL
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TECHNICAL HELP
United States and Canada
Cincinnati Sub-Zero Products, LLC. Toll Free 1-800-989-7373
12011 Mosteller Road (U.S.) 24hr Clinical Support 1-513-460-2038
Cincinnati, OH 45241 Fax [phone]
www.cszmedical.com
BEFORE YOU CALL FOR SERVICE
To help us better serve you, please have the serial number of your MICRO-TEMP®LT unit ready
when you call for parts or service. The serial number is located on the specification label attached
to the unit’s rear panel.
How to read serial numbers:
Example: 121-LT-60000
12 indicates a manufacturing date of the year 2012
1 indicates the quarter (first)
-LT- means MICRO-TEMP®LT, Model 749
60000 indicates that this is the 60,000th unit of a certain model
IN-WARRANTY REPAIR AND PARTS
All parts on your MICRO-TEMP®LT unit are covered by a one year warranty (parts and labor if
returned to CSZ). 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 MICRO-TEMP®LT 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 MICRO-TEMP®LT unit.