Cardiac Science ST 55 User manual

Cardiac Stress Treadmills
Service Manual
70-00298-01 A

CARDIAC STRESS TREADMILLS SERVICE
MANUAL
70-00298-01 A

Copyright © 2008 Cardiac Science Corporation. All rights reserved.
Notice: Due to rapid changes in computer technology, the specifications provided in this
manual are subject to change without notice.
Federal law restricts this device to sale by or on the order of a physician.
Trademarks
Quinton, Burdick, Q-Stress, and Quest are trademarks or registered trademarks of Cardiac
Science Corporation.
All other product and company names are trademarks or registered trademarks of their
respective companies.
For sales and technical support outside the USA, contact your local sales and technical
support representative.
Liability Notice
Failure to follow the conditions set forth below shall limit, to the extent allowed by law,
Cardiac Science Corporation responsibility for the safety, reliability, and performance of
this equipment:
The operator manual must be read in full by each operator before the product is first used.
Assembly operations, extensions, readjustments, modifications, or repairs must be carried
out only by personnel trained or authorized by Cardiac Science Corporation.
The electrical wiring within the treadmill’s setting and the electrical installation of the
treadmill must comply with the applicable local or provincial requirements.
The equipment must be used in accordance with the instructions for use.
70-00298-01 A TM 55/65 Treadmill 4.0
ii
Cardiac Science Corporation
3303 Monte Villa Parkway
Bothell, WA 98021, USA
[phone] (USA and Canada)
[phone]
[email protected]
www.cardiacscience.com
MDSS GmbH
Schiffgraben 41
D-30175 Hannover
Germany
EC REP

70-00298-01 A Contents iii
Contents
Contents
Chapter 1: Safety
Safety Terms and Definitions................................................................. 1-2
Warnings and Cautions ......................................................................... 1-3
Safety Notes........................................................................................... 1-6
Symbol Definitions................................................................................ 1-7
EMC Declaration Tables ....................................................................... 1-9
Electromagnetic Emissions .............................................................. 1-9
Electronic Immunity ..................................................................... 1-10
Recommended Separation Distances ............................................. 1-12
Chapter 2: Introduction
Controls................................................................................................. 2-2
Operation........................................................................................ 2-2
Power .............................................................................................. 2-2
Emergency Stop Button .................................................................. 2-2
Indicators............................................................................................... 2-3
Installation............................................................................................. 2-3
Chapter 3: Theory of Operation
Overview ............................................................................................... 3-2
Headframe Assembly....................................................................... 3-2
Deck and Roller Assembly............................................................... 3-2
Stress Monitor to Treadmill Interface ....................................................3-2
Headframe Assembly ............................................................................. 3-3
Input Power Module ....................................................................... 3-3
Drive Board..................................................................................... 3-3
Transformer Assembly..................................................................... 3-3
Drive Motor Assembly .................................................................... 3-3
Grade Motor Assembly and System................................................. 3-4
Deck and Roller Assembly ..................................................................... 3-4
Chapter 4: Preventative Maintenance
Recommended Service ........................................................................... 4-2
Routine Maintenance............................................................................. 4-2
Visual Inspection............................................................................. 4-2
Cleaning the Treadmill Surfaces ............................................................ 4-2
Disinfection..................................................................................... 4-2

Contents 70-00298-01 A
iv
Contents
Vacuuming Under the Treadmill Hood.................................................4-3
Frequency........................................................................................4-3
Replacement Schedules ..........................................................................4-3
Electrical Testing ...................................................................................4-3
Chapter 5: Repair/Replacement and Calibration
Electrical Shock......................................................................................5-2
Burns .....................................................................................................5-2
Mechanical Hazards...............................................................................5-2
Tools......................................................................................................5-3
Removing the Treadmill Hood ..............................................................5-4
Replacing the Configuration Plate .........................................................5-6
Replacing the Power Cord .....................................................................5-7
Hard-wired Cords on Low Voltage Units........................................5-7
Detachable Cords on High Voltage Units .......................................5-7
Replacing the AC Drive Module............................................................5-8
Bus Recovery System (BRS).................................................................5-10
Replacing the Tensioner....................................................................... 5-11
Replacing the Poly-V Drive Belt ..........................................................5-13
Replacing the Drive Motor ..................................................................5-14
Replacing the Transformer................................................................... 5-16
Replacing the Grade Motor..................................................................5-17
Replacing the Grade Motor Chain ................................................5-18
Replacing the Grade Potentiometer (Pot).............................................5-19
Grade Pot Wires............................................................................ 5-20
Removing the Rack Gears ....................................................................5-21
Reassembling the Rack Gears...............................................................5-22
Replacing a Jammed Rack Gear ...........................................................5-23
Replacing the Pinion Shaft...................................................................5-24
Adjusting the Grade Limit Switches.....................................................5-26
Walking Deck Assembly ...................................................................... 5-27
Replacing Rollers ................................................................................. 5-28
Removing the Deck Assembly from Headframe................................... 5-29
Replacing the Walking Belt..................................................................5-30
Removing the Deck ............................................................................. 5-31

70-00298-01 A Contents v
Contents
Adjusting the Walking Belt.................................................................. 5-32
Belt Tension.................................................................................. 5-32
Walking Belt Tracking .................................................................. 5-33
Replacing the Emergency Stop Switch ................................................. 5-35
Replacing the Emergency Stop Cable................................................... 5-36
Calibration Procedures......................................................................... 5-37
Grade Potentiometer (Pot) Calibration ......................................... 5-37
Chapter 6: Troubleshooting
Diagnosis ............................................................................................... 6-2
Electrical Problems.......................................................................... 6-2
Electronic Problems......................................................................... 6-2
Mechanical Problems ...................................................................... 6-2
Tools ..................................................................................................... 6-3
Electrical Problems ................................................................................ 6-4
Electronic Problems ............................................................................... 6-5
Error Codes..................................................................................... 6-5
Mechanical Problems ............................................................................. 6-6
Walking belt.................................................................................... 6-6
Drive Belt........................................................................................ 6-6
Treadmill Noise .............................................................................. 6-7
Error Flow Charts .................................................................................. 6-8
Bus Voltage Flow Chart .................................................................. 6-9
Grade Error Flow Chart ................................................................ 6-10
Drive Motor Flow Chart ............................................................... 6-11
Communications Link Flow Chart................................................ 6-12
Grade Problems Flow Chart.......................................................... 6-13
Appendix A: Specifications
Cardiac Stress Treadmills Specifications.................................................A-2
Power Requirements ..............................................................................A-3
Speed Vs. Weight Range........................................................................A-4
Appendix B: Part Numbers
Final Assemblies.....................................................................................B-2
Spares ....................................................................................................B-3
Placement of Spare Parts........................................................................B-5

Contents 70-00298-01 A
vi
Contents
Appendix C: Drawings
Wiring Diagrams .................................................................................. C-1
Appendix D: Diagrams
Wiring Diagram, Low Voltage Treadmill..............................................D-2
Wiring Diagram, High Voltage Treadmill ............................................D-3

TM 55/65 Treadmill 4.0 70-00298-01 A 1-1
1Safety
Contents
◆Safety Terms and Definitions 1-2
◆Warnings and Cautions 1-3
◆Safety Notes 1-6
◆Symbol Definitions 1-7
◆EMC Declaration Tables 1-9
This manual contains information for servicing and repairing the Cardiac Stress
treadmills, models TM55/TM65 and ST55/ST65, to the module level. The manual
covers both domestic and international versions of the treadmills, which can differ in
voltage and mandatory emergency stop button.
This manual is designed for authorized service personnel with proper training. There are
no user-serviceable parts in the treadmills. Any attempt by non-authorized personnel to
service the treadmill may void the warranty.
Before servicing the treadmill, read the safety requirements specified in this chapter.
Use this manual only when servicing Cardiac Science Stress treadmills. Do not use it for
other treadmills.

70-00298-01 A TM 55/65 Treadmill 4.0
1-2
Safety
Safety Terms and Definitions
The symbols shown below identify potential hazard categories. The definition of each
category is as follows:
!
WARNING!
This alert identifies hazards that may cause serious personal injury or death.
!
Caution.
This alert identifies hazards that may cause minor personal injury, product damage, or
property damage.

TM 55/65 Treadmill 4.0 70-00298-01 A 1-3
Warnings and Cautions
Warnings and Cautions
Before operating any treadmill, ensure the following warnings and cautions are understood
and followed.
!
WARNING!
The treadmill must be on an appropriate, dedicated electrical circuit with a power rating that
meets the electrical specification on the treadmill serial number label. Nothing else should
be connected to the circuit.
!
WARNING!
As long as the treadmill is plugged into a powered outlet and the treadmill circuit breaker is
set to ON, the treadmill is receiving power, even when the monitoring system is turned off.
Do not place hands beneath the treadmill while it is plugged in.
!
Caution
Read this manual in full before operating the treadmill.
!
Caution
Before each use of this equipment, check the power receptacle for signs of damage. Do not
operate the equipment if the integrity of these items is in question.
!
Caution
Be sure the connection for the optional Emergency Off switch is secure. Test the switch to
verify proper operation. Do not operate the equipment if the integrity of these items is in
question.
!
Caution
Keep the treadmill area clear. Maintain a minimum open space of 1.5 feet (0.5 meter) on each
side and 6 feet (2 meters) at the rear.
!
Caution
The Cardiac Stress Treadmill should not be used adjacent to or stacked with other
equipment. If adjacent or stacked use is necessary, the Cardiac Stress Treadmill should be
observed to verify normal operation in the configuration in which it will be used.
!
Caution
Do not operate this equipment in the presence of flammable anesthetic mixtures.
!
Caution
Regularly inspect cables and treadmill belts for wear or damage. Do not operate the
equipment if the integrity of these items is in question.

70-00298-01 A TM 55/65 Treadmill 4.0
1-4
Safety
!
Caution
Increased risk due to leakage current can result if this equipment is not grounded properly.
!
Caution
To avoid potential safety and electrical problems, use parts and accessories that meet
specifications as noted in this user guide and the user guide for your stress monitor.
!
Caution
When connecting auxiliary equipment approved for use with the monitoring system, be
certain the summation leakage current does not exceed local or provincial standards.
!
Caution
Failure to follow these guidelines can produce a serious or possibly fatal electrical shock
hazard. Consult a qualified electrician as required.
!
Caution
Patients and clinicians should secure long hair and loose clothing before using and/or
operating the treadmill.
!
Caution
Do not start the treadmill when someone is standing on the belt.
!
Caution
Keep speed and grade at the lowest settings when getting on and off the treadmill belt.
!
Caution
Never place chairs or other objects on treadmills.
!
Caution
Be aware of a moving treadmill belt.
!
Caution
Allow sufficient room for patients to maneuver around the system and to safely mount and
dismount the treadmill.
!
Caution
Patients should wear shoes when using the treadmill.

TM 55/65 Treadmill 4.0 70-00298-01 A 1-5
Warnings and Cautions
!
Caution
If this treadmill is equipped with the rapid deceleration profile, it is specifically designed to
come to a rapid stop. This feature requires that attendant(s) are available to support and
assist the patient user. Attendants MUST be in a position to support and assist the patient
when the belt stops.

70-00298-01 A TM 55/65 Treadmill 4.0
1-6
Safety
Safety Notes
This equipment is classified Class I, Type B, ordinary equipment, not protected against
fluid ingress. It is rated for continuous operation.
Note: Use of accessories or cables other than those specified, with the exception of
accessories or cables sold by the manufacturer as replacement parts for internal
components, may result in increased emissions or decreased immunity of the treadmill.
Note: Keep the area underneath and around the treadmill clear. Make sure cables are clear
of the treadmill.
The following are safety guidelines for operating the treadmill.
◆Ensure the patient understands the proper treadmill mount and dismount procedure.
◆Properly train new staff.

TM 55/65 Treadmill 4.0 70-00298-01 A 1-7
Symbol Definitions
Symbol Definitions
Your treadmill may display one or more of the following symbols and warning labels for
your protection. No single product displays all.
Attention: Consult
accompanying
documents
Earth ground (protective)
Off (power
disconnected from
mains)
Type B equipment—
provides adequate
protection against
electric shock,
particularly regarding
allowable leakage
current; reliability of the
protective earth
connection (when
present)
On (power connected
to mains)
Type BF equipment—
contains an F-type
isolated patient applied
part providing a high
degree of protection
against electric shock
Alternating current Type BF equipment with
defibrillation protection
High voltage
Type CF equipment—
contains an F-type
isolated patient applied
part and provides a
degree of protection
against electric shock
higher than that for type
BF equipment regarding
allowable leakage
currents
Earth ground
(functional)
Type CF equipment with
defibrillation protection
Replace fuse only as
marked Fuse

70-00298-01 A TM 55/65 Treadmill 4.0
1-8
Safety
This is the CE marking of conformity indicating that the device having this
symbol on its immediate label meets the applicable requirements of the
European Medical Device Directive.
Mains power Equipotentiality
Down Up
Faster Slower
Warning T Timed fuse (slo-blo)
USB Connector Fragile: Do not lift in this
location
Hz Hertz V Volts
AAmperes VAVoltAmperes
160-0169-001 Rev A

TM 55/65 Treadmill 4.0 70-00298-01 A 1-9
EMC Declaration Tables
EMC Declaration Tables
This section lists EMC Declaration Tables.
◆The Cardiac Stress Treadmill requires special precautions regarding EMC and must be
installed and put into service according to the guidelines of the EMC declaration
tables.
◆Portable and mobile RF communications equipment may affect the Cardiac Stress
Treadmill and the recommended separation distances in the EMC declaration tables
should be observed.
Electromagnetic Emissions
Cardiac Stress Treadmills are intended for use in the electromagnetic environment
specified below. The customer or user of this equipment must ensure it is used in such an
environment.
Table 1-1: Guidance and Manufacturer's Declaration - Electromagnetic Emissions
Emissions Test Compliance Electromagnetic Environment - Guidance
RF emissions
CISPR 11 Group 1
The Cardiac Stress Treadmills use 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 Cardiac Stress Treadmills are 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
Note: Tests verified with shielded input/output cables only.

70-00298-01 A TM 55/65 Treadmill 4.0
1-10
Safety
Electronic Immunity
Cardiac Stress Treadmills are intended for use in the electromagnetic environment
specified below. The customer or user of this equipment must ensure it is used in such an
environment.
Table 1-2: Guidance and Manufacturer's Declaration - Electromagnetic Immunity
Immunity Test
IEC 60601
test level
Compliance
Level
Electromagnetic Environment -
Guidance
Electrostatic
discharge (ESD)
IEC 61000-4-2
+ 6kV contact
+ 8 kV air
+ 6kV 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
differential
mode
+2 kV
common
mode
+ 1 kV
differential
mode
+2 kV
common
mode
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 cycle
<70% UT
(>30% dip in
UT) for 25
cycle
<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 cycle
<70% UT
(>30% dip in
UT) for 25
cycle
<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 ST/TM55
or ST/TM65 requires continued operation
during power mains interruptions, it is
recommended that the ST/TM55 or ST/
TM65 be powered from an
uninterruptible power supply or a
battery.

TM 55/65 Treadmill 4.0 70-00298-01 A 1-11
EMC Declaration Tables
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.
Note: Tests verified with shielded input/output cables only.
Table 1-3: Guidance and Manufacturer's Declaration - Electromagnetic Immunity
Immunity
Test
IEC 60601
test level
Compliance
Level Electromagnetic Environment - Guidance
Conducted
RF
IEC 61000-4-6
3 Vrms
150 kHz to
80 MHz
3 V
Portable and mobile RF communications
equipment should be used no closer to any part
of the ST/TM55 or ST/TM65, including cables,
than the recommended separation distance
calculated from the equation applicable to the
frequency of the transmitter.
Recommended separation distance:
150 kHz to 80 MHz:
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to
2.5 GHz
3 V/m
80 MHz to 800 MHz:
800 MHz to 2.5 GHz:
where Pis the maximum output power rating of
the transmitter in watts (W) according to the
transmitter manufacturer and dis the
recommended separation distance in meters (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.bInterference may occur in the
vicinity of equipment marked with the following
symbol:
Table 1-2: Guidance and Manufacturer's Declaration - Electromagnetic Immunity
Immunity Test
IEC 60601
test level
Compliance
Level
Electromagnetic Environment -
Guidance
d1.2P=
d1.2P=
d2.3P=

70-00298-01 A TM 55/65 Treadmill 4.0
1-12
Safety
Recommended Separation Distances
This section describes recommended separation distances between portable and mobile RF
communications equipment and the Cardiac Stress Treadmill.
The Cardiac Stress Treadmills are intended for use in an electromagnetic environment in
which radiated RF disturbances are controlled. The customer or the user of the Cardiac
Stress Treadmills can help prevent electromagnetic interference by maintaining a
minimum distance between portable and mobile RF communications equipment
(transmitters) and the Cardiac Stress Treadmills as recommended below, according to the
maximum output power of the communications equipment.
Note: At 80 MHz and 800 MHz, the higher frequency range applies.
Note: These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects and people.
Note: Tests were verified with shielded input/output cables only.
a Field 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 ST/TM55 or ST/TM65 is used exceeds the applicable RF
compliance level above, then the ST/TM55 or ST/TM65 should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the ST/TM55 or ST/TM65.
bOver the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Table 1-4: Recommended Separation Distances
Rated maximum
output power of
transmitter
(W)
Separation distance according to frequency of transmitter (m)
150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2.5 GHz
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.73
11.21.22.3
10 3.8 3.8 7.3
100 12 12 23
Table 1-3: Guidance and Manufacturer's Declaration - Electromagnetic Immunity
Immunity
Test
IEC 60601
test level
Compliance
Level Electromagnetic Environment - Guidance
d1.2P=d1.2P=d2.3P=

TM 55/65 Treadmill 4.0 70-00298-01 A 1-13
EMC Declaration Tables
Note: For transmitters rated at a maximum output power not listed above, the recommended
separation distance d in meters (m) can be estimated using the equation applicable to the
frequency of the transmitter, where P is the maximum output power rating of the transmitter in
watts (W) according to the transmitter manufacturer.
Note: At 80 MHz and 800 MHz, the higher frequency range applies.
Note: These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects and people.
Note: Tests were verified with shielded input/output cables only.
Table 1-4: Recommended Separation Distances
Rated maximum
output power of
transmitter
(W)
Separation distance according to frequency of transmitter (m)
150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2.5 GHz
d1.2P=d1.2P=d2.3P=