Quinton ST 55 User manual

MEDTRACK"
ST
55 and ST 65
TREADMILLS
SERVICE MANUAL

'SOW01
The general quality systemat QuintonInstrument
Companyhasbeen certified by BritishStandards
'<Z'
CERnFIED
Institution(BSI)to IS09001/EN 46001standards
under CertificateNumber 0357.
This is the CE markingof conformityindicatingthat the
devicehaving this symbolonits immediate label meets
oo~
the applicablerequirementsof the European-Medical
DeviceDirective.
Trademarks
Quintonand MedTrack areregistered trademarks of Quinton
Instrument Company. All other product and companynames are
trademarks or registered trademarks of their respective companies.
Service Manual
PublicationNumber 000378-830
Text Number 033386-001A
Copyright O 1995Quinton Instrument Co. AU rights reserved
Quinton Instrument Company
3303Monte
Villa Parkway,Bothell, WA 98021-8906
Telephone[phone] Fax [phone]
USAand Canada: Sales 800/4260347 Service 800/4260538
INTERNATIONALSALES
Latin America & Asia-Pacific
Telephone[phone] Fax [phone]
Europe/Hoofddorp, The etherl lands
Telephone[phone] Fax [phone]
Middle EastlDubai, U.A.E.
Telephone[phone] Fax [phone]

This manual containsinformationfor servicingand
repairingQuinton8MedTrackBST 55
(P/N 00378)and
ST 65
(P/N 00383)treadmills to the module level.The
manualcoversdomesticand internationalversions of the
treadmills,which aredifferentiatedby dashnumber-see
Appendix
C, Part Numbers.
This manual is designedforuse by Quinton-authorized
servicepersonnelwithproper training. There areno user-
serviceableparts
in eithertreadmill.Any attemptby non-
Quinton-trainedpersonnel toservicethe equipmentmay
void the warranty.For serviceinformation, call Quinton
Technical Service: 1-800-426-0538.
Before servicingthe treadmill,read the safety requirements
listed inAppendixA.
IMPORTANT Do not usethis manualwhen servicingSeries 90 or
Q-Seriestreadmills.

Contents
Preface iii
1 . Introduction
Models ...................................... 1-1
Controls
.................................... 1-2
Power
................................... 1-2
Operation
................................. 1-2
Emergency Stop Button
..................... 1-2
Indicators
.................................... 1-2
Installation
................................... 1-2
Accessories ................................. 1-3
2 . Theory of Operation
Overview .................................... 1-1
ECG Monitor
............................. 1 . 1
Headframe Assembly
....................... 1 . 1
Deck and Roller Assembly
................... 1 . 1
ECG Monitor to Treadmill Interface
.............. 1-2
.......................... Headframe Assembly 1-2
Input Power Module
........................ 1-2
Drive Board
............................... 1-2
Drive Motor Assembly
...................... 1-2
Grade Motor Assembly and System
............ 1-2
Deck and Roller Assembly ...................... 1-3
3 . Troubleshooting
Diagnosis .................................... 3-1
Tools
....................................... 3-1
............................ Electrical Problems 3-2
Electronic Problems
........................... 3-3
Error Codes
............................... 3-3
Mechanical Problems
.......................... 3-3
Walk Belt
................................ 3-3
Drive Belt
............................... 3-3
Treadmill Noise ........................... 3-4
Flow Charts
.................................. 3-4
4 . RepairIReplacementand Calibration
Warnings
Electrical Shock
........................... 4-1
Burns
.................................... 4-1
........................ Mechanical Hazards 4- 1

Contents
..
-.
..
Tools ....................................... 4-2
...................
Removing the Treadmill Hood 4-3
................
Replacing the Configuration Plate 4-5
......................
Replacing the Power Cord 4-6
..........................
Hard-wired Cords 4-6
..........................
Detachable Cords 4-6
Replacing the VSD Boardcard Cage Assembly
..... 4-6
...................
BUS Recovery System (BRS) 4-7
.......................
Replacing the Tensioner 4-8
.................
Replacing the Poly-V Drive Belt 4-9
......................
Replacing the Drive Motor 4-10
......................
Replacing the Transformer 4-12
.....................
Replacing the Grade Motor 4-13
.........................
Grade Motor Chain 4-14
......... Replacing the Grade Potentiometer (POT) 4-14
...........................
Grade Pot Wires 4-15
......................
Removing the Rack Gears 4-16
.................
Reassembling the Rack Gear 4-17
..................
Replacing a Jammed Rack Gear 4-18
......................
Replacing the Pinion Shaft 4-19
..............
Adjusting the Grade Limit Switches 4-20
..........................
Walk Deck Assembly 4-21
.............................
Replacing Rollers 4-21
...........................
Replacing Walk Belt 4-22
..............................
Removing Deck 4-23
...........................
AdjustingWalk Belt 4-23
..............................
BeltTension 4-23
.............................
Belt Tracking 4-24
................
Rear Roller Guard Adjustment 4-25
............
Replacing the Emergency Stop Switch 4-25
.............
Replacing the Emergency Stop Cable 4-26
.........................
Calibration Procedures 4-26
.........
Grade Potentiometer (POT) Calibration 4-26
.................
Speed and Grade Calibration 4-27
5 . PreventiveMaintenance
.....................................
Warning 5-1
........................
Recommended Service 5-1
..........................
Routine Maintenance 5-1
..........................
Visual Inspection 5-1
..................
CleaningTreadmill Surfaces 5-1
...............................
Disinfection 5-2
........... Vacuuming Under The Treadmill Hood 5-2
........................
Replacement Schedules 5-2
.............................
Electrical Testing 5-2
Appendix A . Safety Requirements
Appendix
B . Specifications

Contents
Appendix C. Part Numbers
Final Assemblies. ............................. C-1
Spares ...................................... C-I
Appendix D. Assembly Drawings
Symbol Definitions
Index
vii

1. Introduction
ST Treadmill
Intemational Version
MedTrack ST medical treadmillsaredesigned specificallyfor
stress test applications.The treadmills arenot intended to
operateindependently or with a treadmillcontroller.They are
designedfor use in conjunctionwith either the Q4500 stress-test
monitor (QuintonP/N 00301)or the Q710 ExerciseMonitor
(QuintonP/N 00334).
Two MedTrackmodels are available: the ST 55 (P/N 00378) and
the ST
65 (P/N00383).Internationalversionshave a detachable
power cord and an emergencystopcontrol.
Hood
Emergency
Button
Cable
Connector

CONTROLS
-I'
Power The treadmillmust be connected to the ECG monitor and plugged
intoa dedicated line.The treadmillcircuitbreaker, located on the
frontof the treadmill hood, must be set to
ON and the ECG moni-
tor power mustbe on for the treadmill to operate.
NOTE Always turn off the circuit breaker on the treadmill beforeconnecting
to or disconnectingfrom the power source.
Emergency Stop
Button Interface Power Cord
r
\
Operation Except forthe emergencystopbutton, allcommands,including
walkbelt power, speed,grade, and protocol,areenteredfromthe
ECG monitor.All patient data appear on the monitor screen.Use
the manuals supplied with the ECG monitor to operate the tread-
../
mill and to enterservicemode.
Emergency The treadmillmay have an emergencystopbutton located on the
Stop Button fronthandrail: thebutton is optional in the U.S.A. When pressed,
thebutton stopsthebelt abruptly.
The stopbuttonis intended
onlyforemergency.
INDICATORS
Thereare no visualindicatorson the treadmill. All patient
responses andwarnings appear on the monitor screen.
INSTALLATION
Completetreadmill installation procedures, including site
requirements,are given in Appendix C
of the MedTrack treadmill
operatormanuals.

ACCESSORIES
The followingaccessoriesare shippedwith eachMedTrack ST
treadmill:
Hand grip-
Operator manual (Englishlanguage)
Operatormanual (Frenchlanguage)
Operatormanual (Germanlanguage)
Operatormanual (Spanishlanguage)
Operatorm-anual (Italianlanguage)
Servicemanual (Englishlanguageonly).

Theory of Operation
OVERVIEW
The treadmill consistsof two subassemblies: the headframe
and the deckand roller assembly. TheECG monitor, whichis
attachedby cable to the treadmill,functionsasthe user interface.
ECG Monitor The user entersall treadmill commandsthroughthe ECG monitor;
the informationappearsonthe monitor display. The monitor
processesthe informationand sendscommandsto the headframe
assembly.
Headframe The headframeassembly receives speed and grade commands
Assembly fromthe ECG monitor.The assemblyincludesthe driveand grade
systemsand the electronicsthat drivethese systems.Athree-phase
AC motor drivesthe walkbelt.
A DC motormovesthe frontof the
treadmill up or downto simulatehills.The drivemotor supplies
torqueand speed to the drivepulley through a drivebelt.
Deckand Roller
The deckandroller assemblyis attachedto the headframeand
Assembly supportstherear of the treadmill.It provides theplatformfor the
walking belt.The drivebelt supplies torque to thewalkbelt
through the drive roller pulley.
Support
Clinician Display
Input
4 f Output
ECG Monitor
Communicutions
Floor
P=l
Input,
Power
Support
Head Frame Deck and Roller
Assembly MectianicalAttachmen{ Assembly
-
Floor
LYY
I I