Safety Tests For Maintenance; Introduction; Warnings And Precautions; Measurement Equipment - KaVo ORTHOPANTOMOGRAPH OP 3D Service Manual

8.5 Safety tests for maintenance

8.5.1 Introduction

Carry out all service and post repair electrical safety testing in accordance with the IEC
62353 standard and/or in accordance with any local, state and national standards related
to in-service and post repair electrical safety testing of dental/medical x-ray devices.
Carry out in-service and post repair electrical safety testing after you have installed,
repaired, maintained, and serviced the device. Additional in-service and post repair
electrical safety and other testing information is also included in the User and installation
manual supplied with the device.
Pay particular attention to the protective earth measurements that are explained in
chapter

Protective earth resistance test

Refer to the IEC62353 standard for more information on the tests.
Referenced standard
• IEC 62353:2007, Medical electrical equipment – Recurrent test and test after repair of
medical electrical equipment

8.5.2 Warnings and precautions

Observe any international, national and local electrical and safety requirements with
regards the measurements and connections of dental x-ray equipment to a power
supply.
Familiarize yourself with the measurement equipment, safe and correct use of it, and
with any warnings and precautions in accompanied documentation.

8.5.3 Measurement equipment

We recommend to use test equipment that is specifically designed to be used with the
IEC 62353 standard. For example: Fluke ESA612 Electrical Safety Analyzer for IEC
62353.
Always follow the instructions supplied with the test equipment that you are using. Also
familiarize yourself with the relevant electrical standards for this test equipment. The
measurement equipment must comply to the requirements as specified in the IEC 62353
standard.
8.5.4 Protective earth resistance test
Purpose of the protective earth measurement is to ensure that the protective earth
conductor connects all accessible conductive parts of the unit, which may become live
in case of a fault, in a proper and safe way to the protective earth terminal of the mains
plug.
NOTICE! Perform all the tests in order instructed in the chapter
protective earth
The testing is done in two phases:
1. Verifying the condition of the power cord:
• DUT with detachable mains power supply cord
• DUT with permanent power supply cord
2. Verifying the whole protective earth path (to the test points)
• DUT with detachable mains power supply cord
• DUT with permanent power supply cord
ORTHOPANTOMOGRAPH
and its sub-chapters.
™
OP 3D
and in chapter Leakage current
8 Part replacement instructions
measurement.
Measuring
153