Metron QA-ST Service manual

QA-ST

User and Service Manual

QA-ST Safety Tester

North American Version 1.1

Copyright  2000 by METRON. All rights reserved.

METRON:

USA __ FRANCE ________________ NORWAY________________

1345 Monroe NW, Suite 255A 30, rue Paul Claudel Travbaneveien 1
Grand Rapids, MI 49505 91000 Evry, France N-7044 Trondheim, Norway
Phone: [phone] Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
E-mail: [e-mail] E-mail: [e-mail] E-mail: [e-mail]

Disclaimer

METRON provides this publication as is without warranty of any kind, either express or implied, in­cluding but not limited to the implied warranties of merchantability or fitness for any particular purpose.
Further, METRON reserves the right to revise this publication and 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 jurisdictions do not allow disclaimers of expressed or implied war­ranties 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 published specifica­tions and to the documentation, provided that it is used for the purpose for which it was designed.
METRON will, for a period of twelve (12) months from date of purchase, replace or repair any defective
simulator, if the fault is due to a manufacturing defect. In no event will METRON or its local representa­tives be liable for direct, indirect, special, incidental, or consequential damages arising out of the use of
or inability to use the QA-ST Safety Tester, even if advised of the possibility of such damages.
METRON or its local representatives are not responsible for any costs, loss of profits, loss of data, or
claims by third parties due to use of, or inability to use the QA-ST Safety Tester. Neither METRON nor
its local representatives will accept, nor be bound by any other form of guarantee concerning the QA­ST Safety Tester other than this guarantee. Some jurisdictions do not allow disclaimers of expressed or
implied 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 and Return.................................................................................................2-1

3. OPERATING QA-ST...........................................................................................................3-1

4. QA-ST SAFETY TESTS ...................................................................................................4-1

4.1 Linearity Test of Voltmeter (Lead to Lead)...............................................................................4-1

4.2 Mains Supply Voltage................................................................................................................4-2

4.3 Ground 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 – Lead to Lead..................................................................................4-6

4.7 Patient Leakage Current – Lead to Ground..............................................................................4-7

4.8 Leakage Current – Lead to ISO................................................................................................4-8

5. CALIBRATION....................................................................................................................5-1

5.1 Linearity Test of Voltmeter (Lead to Lead)...............................................................................5-1

5.2 Mains Supply Voltage................................................................................................................5-2

5.3 Ground 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 – Lead to Lead..................................................................................5-6

5.7 Patient Leakage Current – Lead to Ground..............................................................................5-7

5.8 Leakage Current – Lead to ISO................................................................................................5-8

APPENDIX A – CIRCUIT BOARD SCHEMATIC (NORTH AMERICAN VERSION)..............A-1

APPENDIX B – ERROR REPORT FORM...............................................................................B-1

APPENDIX C - IMPROVEMENT SUGGESTION FORM.........................................................C-1

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Manual Revision Record

This record page is for recording revisions to your QA-ST User and Service Manual that have been
published by METRON AS or it’s authorized representatives. We recommend that only the man­agement or facility representative authorized to process changes and revisions to publications:

• make the pen changes or insert the revised pages;

• ensure that obsolete pages are withdrawn and either disposed of immediately, or marked as

superseded and placed in a superseded document file, and;

• enter the information below reflecting that the revisions have been entered.

Rev No Date Entered Reason Signature of Person Entering Change

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1. Introduction

This chapter describes the METRON QA-ST Safety Tester’s features
and specifications.

1 . 1 F e a t u r e s

The QA-ST is designed to quickly check electrical safety on medical
and industrial devices. It is palm-sized and very portable. The tests
can be performed manually or in step-by-step mode. The results are
displayed in a bright 4-digit LCD display.

The QA-ST performs all electrical safety tests necessary to satisfy
AAMI ESI, NFPA-99, VDE 701, VDE 751 and HEI 95. It also features
differential current measurements obtained by an internal current
clamp. This presents a new leakage current measurement technique
for convenient testing of medical equipment with a fixed power cord
(hardwired to wall, not detachable).

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1. Line Voltage Measurement Range: 0 - 300 V

Accuracy: ± 1% reading, ± 1 digit

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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%reading, ± 1 digit
Resolution: 0.01 ohms
Current Source: 100 mA DC

AC-Source:
Range: 0 - 1999 mOhms
Accuracy: ± 2% reading, ± 1 digit
Resolution: 1 mOhm
Current Source: 200 mA AC

4. Leakage Current

Range: 0 - 1999 µA RMS
Accuracy: DC and 25 to 1.0 kHz, ± 2% reading, ± 1 digit

1.0 kHz to 100 kHz, ± 2.5%R, ± 1 digit
100 kHz to 1 MHz, ± 5.0%R, ± 1 digit

Resolution: 1 µA

5. Input Impedance

1000 ohm, AAMI ES1-1993 load or
IEC 60601.1 load

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: Keypad

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 Lead (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, and the
general procedures for QA-ST setup.

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1. Inspect the outer box for physical damage.

2. Carefully unpack all items from the box and 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 Lead (Kelvin Cable) (P.N. 17290)

• Specified power supply socket

3. If you note physical damage, or if the unit fails to function accord-

ing to specification, inform the supplier immediately. When
METRON or the company’s Sales Agent, is informed, measures

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will be taken to either repair the unit or dispatch a replacement.
The customer will not have to wait for a claim to be investigated
by the Sales Agent. The Customer should issue a new purchase
order to ensure delivery.

4. When returning an instrument to METRON, or the Sales Agent,

fill out the address label, describe what is wrong with the instru­ment, and provide the model and serial numbers. If possible, use
the original packaging material for return shipping. Otherwise,
repack the unit using:

• a reinforced cardboard box, strong enough to carry the

weight of the unit.

• at least 5 cm of shock-absorbing material around the unit.

• nonabrasive dust-free material for the other parts.

Repack the unit in a manner to ensure that it cannot shift in the

box during shipment.

METRON’s product warranty is on page ii of this manual. The war­ranty does not cover freight charges. C.O.D. will not be accepted
without authorization from METRON or its Sales Agent.

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3. Operating the QA-ST

This chapter describes the controls and terminals of the QA-ST
Safety Tester.

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Remove the batteries and dis­connect the AC Adapter / Bat­tery Eliminator if you do not in­tend to use the PS-410 for an
extended period of time.

NOTE

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