METRON QA-ST Troubleshooting guide

QA-ST
User and Service Manual
QA-ST Safety Tester
North American Version 1.1

Copyright  2000 by METRON. All rights reserve .
METRON:
USA __ FRANCE ________________ NORWAY________________
1345 Monroe NW, Suite 255A 30, rue Paul Clau el Travbaneveien 1
Gran Rapi s, MI 49505 91000 Evry, France N-7044 Tron heim, Norway
Phone: [phone] Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
E-mail: support.us@metron-biome .com E-mail: [e-mail] E-mail: [e-mail]
Disclaimer
METRON provi es this publication as is without warranty of any kin , either express or implie , in-
clu ing but not limite to the implie warranties of merchantability or fitness for any particular purpose.
Further, METRON reserves the right to revise this publication an to make changes from time to time
to the content hereof, without obligation to METRON or its local representatives to notify any person of
such revision or changes. Some juris ictions o not allow isclaimers of expresse or implie war-
ranties in certain transactions; therefore, this statement may not apply to you.
Limited Warranty
METRON warrants that the QA-ST Safety Tester will substantially conform to publishe specifica-
tions an to the ocumentation, provi e that it is use for the purpose for which it was esigne .
METRON will, for a perio of twelve (12) months from ate of purchase, replace or repair any efective
simulator, if the fault is ue to a manufacturing efect. In no event will METRON or its local representa-
tives be liable for irect, in irect, special, inci ental, or consequential amages arising out of the use of
or inability to use the QA-ST Safety Tester, even if a vise of the possibility of such amages.
METRON or its local representatives are not responsible for any costs, loss of profits, loss of ata, or
claims by thir parties ue to use of, or inability to use the QA-ST Safety Tester. Neither METRON nor
its local representatives will accept, nor be boun by any other form of guarantee concerning the QA-
ST Safety Tester other than this guarantee. Some juris ictions o not allow isclaimers of expresse or
implie warranties in certain transactions; therefore, this statement may not apply to you.
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Table of Contents
1. INTRODUCTION.................................................................................................................1-1
1.1 Features....................................................................................................................................1-1
1.2 Specifications.............................................................................................................................1-1
1.3 General Information...................................................................................................................1-2
2. INSTALLATION..................................................................................................................2-1
2.1 Receipt, Inspection an Return.................................................................................................2-1
3. OPERATIN QA-ST...........................................................................................................3-1
4. QA-ST SAFETY TESTS ...................................................................................................4-1
4.1 Linearity Test of Voltmeter (Lea to Lea )...............................................................................4-1
4.2 Mains Supply Voltage................................................................................................................4-2
4.3 Groun Wire Resistance DC.....................................................................................................4-3
4.4 Leakage Current – Internal Case........................................................................................4-4
4.5 Leakage Current – External Case.............................................................................................4-5
4.6 Patient Leakage Current – Lea to Lea ..................................................................................4-6
4.7 Patient Leakage Current – Lea to Groun ..............................................................................4-7
4.8 Leakage Current – Lea to ISO................................................................................................4-8
5. CALIBRATION....................................................................................................................5-1
5.1 Linearity Test of Voltmeter (Lea to Lea )...............................................................................5-1
5.2 Mains Supply Voltage................................................................................................................5-2
5.3 Groun Wire Resistance DC.....................................................................................................5-3
5.4 Leakage Current – Internal Case........................................................................................5-4
5.5 Leakage Current – External Case.............................................................................................5-5
5.6 Patient Leakage Current – Lea to Lea ..................................................................................5-6
5.7 Patient Leakage Current – Lea to Groun ..............................................................................5-7
5.8 Leakage Current – Lea to ISO................................................................................................5-8
APPENDIX A – CIRCUIT BOARD SCHEMATIC (NORTH AMERICAN VERSION)..............A-1
APPENDIX B – ERROR REPORT FORM...............................................................................B-1
APPENDIX C - IMPROVEMENT SU ESTION FORM.........................................................C-1
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Manual Revision Record
This recor page is for recor ing revisions to your QA-ST User and Service Manual that have been
publishe by METRON AS or it’s authorize representatives. We recommen that only the man-
agement or facility representative authorize to process changes an revisions to publications:
•make the pen changes or insert the revise pages;
•ensure that obsolete pages are with rawn an either ispose of imme iately, or marke as
superse e an place in a superse e ocument file, an ;
•enter the information below reflecting that the revisions have been entere .
Rev No Date Entered Reason Signature of Person Entering Change
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1 Introduction
This chapter escribes the METRON QA-ST Safety Tester’s features
an specifications.
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The QA-ST is esigne to quickly check electrical safety on me ical
an in ustrial evices. It is palm-size an very portable. The tests
can be performe manually or in step-by-step mo e. The results are
isplaye in a bright 4- igit LCD isplay.
The QA-ST performs all electrical safety tests necessary to satisfy
AAMI ESI, NFPA-99, VDE 701, VDE 751 an HEI 95. It also features
ifferential current measurements obtaine by an internal current
clamp. This presents a new leakage current measurement technique
for convenient testing of me ical equipment with a fixe power cor
(har wire to wall, not etachable).
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1. Line Voltage Measurement
Range: 0 - 300 V
Accuracy: ± 1% rea ing, ± 1 igit
1 For North American QA-ST Version 1.1

Resolution: 1 V L-N
2. Current Capacity
15 Amps @ 100 Volts
15 Amps @ 120 Volts
10 Amps @ 230 Volts
3. Resistance Measurement
DC-Source:
Range: 0 - 19.99 Ohms
Accuracy: ± 2%rea ing, ± 1 igit
Resolution: 0.01 ohms
Current Source: 100 mA DC
AC-Source:
Range: 0 - 1999 mOhms
Accuracy: ± 2% rea ing, ± 1 igit
Resolution: 1 mOhm
Current Source: 200 mA AC
4. Leakage Current
Range: 0 - 1999 µA RMS
Accuracy: DC an 25 to 1.0 kHz, ± 2% rea ing, ± 1 igit
1.0 kHz to 100 kHz, ± 2.5%R, ± 1 igit
100 kHz to 1 MHz, ± 5.0%R, ± 1 igit
Resolution: 1 µA
5. Input Impe ance
1000 ohm, AAMI ES1-1993 loa or
IEC 60601.1 loa
6. Power Consumption
110 V (50/60) Hz = 200 mA
115 V (50/60) Hz = 200 mA
240 V (50/60) Hz = 100 mA
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1. Temperature Requirements:
+15/59 to +35/95 °C/F while operating
0 to +50/122 °C/F for storage
2. Display:
Type: LCD
Numeric format: 4 characters
Display control: Keypa
3. Power: 100V/110V or 230V/240V, 50/60 Hz
4. Housing: Plastic case
5. Physical Dimensions (D x W x H):
191mm x 135mm x 45mm
7.5 in x 5.3 in x 1.8 in
6. Weight: 930 g / 2.0 lbs.
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Order no:
11040: QA-ST Electrical Safety Analyzer
(Specify power supply socket.)
Standard Accessories:
11045: User/Service Manual QA-ST
17290: Test Lea (Kelvin Cable)
Various power supply socket including:
European Schuco, French Schuco, UK, Swiss,
Australian, US.
Optional Accessories:
11041: Carrying Case
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2 Installation
This chapter explains unpacking, receipt inspection, claims, an the
general proce ures for QA-ST setup.
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1. Inspect the outer box for physical amage.
2. Carefully unpack all items from the box an check to see that you
have the following items:
•QA-ST Electrical Safety Analyzer (P.N. 11040)
•User/Service Manual QA-ST (P.N. 11045)
•Test Lea (Kelvin Cable) (P.N. 17290)
•Specifie power supply socket
3. If you note physical amage, or if the unit fails to function accor -
ing to specification, inform the supplier imme iately. When
METRON or the company’s Sales Agent, is informe , measures
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will be taken to either repair the unit or ispatch a replacement.
The customer will not have to wait for a claim to be investigate
by the Sales Agent. The Customer shoul issue a new purchase
or er to ensure elivery.
4. When returning an instrument to METRON, or the Sales Agent,
fill out the a ress label, escribe what is wrong with the instru-
ment, an provi e the mo el an serial numbers. If possible, use
the original packaging material for return shipping. Otherwise,
repack the unit using:
•a reinforce car boar box, strong enough to carry the
weight of the unit.
•at least 5 cm of shock-absorbing material aroun the unit.
•nonabrasive ust-free material for the other parts.
Repack the unit in a manner to ensure that it cannot shift in the
box uring shipment.
METRON’s pro uct warranty is on page ii of this manual. The war-
ranty oes not cover freight charges. C.O.D. will not be accepte
without authorization from METRON or its Sales Agent.

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3 Operating the QA-ST
This chapter escribes the controls an terminals of the QA-ST
Safety Tester.
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NOTE
Remove the batteries an is-
connect the AC A apter / Bat-
tery Eliminator if you o not in-
ten to use the PS-410 for an
exten e perio of time.

Inlet supply con ition in icators:
Input Power Con ition Inlet Power Con ition LEDs Lit
Live Neutral Groun L (Re ) G (Yellow) N (Green)
L N G X X X
L N NC O X X
L NC G X O X
L G N X O X
N L G O X X
N G L X O X
N L NC O X X
NC L G X O X
N NC L X O X
NC G L X O X
G L N X O X
G N L X O X
G L NC O O O
NC L N X O X
G NC L X O X
NC N L X O X
L=Live N=Neutral G=Ground NC=Not connected X=ON O=Off
Binary isplay format:
LEAD NUMBER DISPLAY X=ON O=OFF
1 OOOX
2 OOXO
3 OOXX
4 OXOO
5 OXOX
6 OXXO
7 OXXX
8 XOOO
9 XOOX
10 XOXO
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4 QA-ST Safety Tests
This chapter escribes QA-ST safety tests by function. If you are un-
familiar with the simulators’ basic operation, refer to paragrap 3.3,
Operating QA-ST.
NOTE: When the QA-ST is initially powere up, the unit will be in a
efault con ition. At this time no measurements are being per-
forme .
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The purpose of this test is to test for any leakage current between
patient lea s (applie parts).
1. Connect patient lea s to the QA-ST starting with port 1,
then 2 an so forth.
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2. Press “Patient Current Lead to Lead”.
3. The result for Lea 1 will be isplaye on the LCD isplay. To
test Lea 2, press “Patient Current Lead to Lead”. Observe
that the lea un er test number is in icate in binary format by
the LEDs in the “Measurements” area locate below the LCD
isplay.
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Arrythmias: Premature Beats
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5.
The purpose of this test is to have the QA-ST isplay the Mains Sup-
ply Voltage coming into the QA-ST. This is measure between Hot
an Neutral.
1. Press “Supply V”.
Square Wave.
2. The value will be isplaye on the LCD. The LED “ON” in the
“Measurements” box will illuminate.
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