Accutorr Plus Service Manual - Mindray

8.0 PREVENTIVE MAINTENANCE
CONTENTS OF THIS CHAPTER ..........................Page
8.1 Introduction.........................................8-1
8.2 Limitations of Physiological Simulators ....................8-1
8.3 Preventive Maintenance Schedule .........................8-2
8.3.1Mechanical and Physical Visual Inspection .................8-2
8.3.2Electrical Safety and Performance Checks (Six Month Interval) . . . 8-2
8.3.3Electrical Safety and Performance Checks (One Year Interval). ...8-2
8.1 INTRODUCTION
The intent of this procedure is to ensure that the product continues to be safe and
effective in it’s intended environment. Complete knowledge of the instrument
characteristics and it’s relationship to the clinical environment are useful in
determining changes in the performance of the monitor, and the clinical
limitations of the device.
As a general rule, the instrument is not tested to the full limits of it’s capabilities at each
service interval. Rather, representative points are tested and the results recorded. It is
important to note that while not all functions are tested to the absolute limits, every
function and option should be exercised. Declining performance over time is frequently
the first indication of the need for more extensive service action.
8.2 LIMITATIONS OF PHYSIOLOGICAL SIMULATORS
The physiological simulator is the principle aid for problem solving. Simulators have
many of the same limitations as the devices that they will test. It is imperative that the
simulator correlate well to a “Reference Standard*”. The electronic simulators available
attempt to replicate a broad spectrum of indices representative of normal and abnormal
physiological events, within the interpretation of the manufacturer.
Most simulators (properly maintained) will provide reasonably accurate and consistent
results, but may not produce the exact results when connected to similar monitors from
different manufacturers. However, the consistent performance of a simulator is a good
indicator of any change in the performance in the monitor.
* For example, an accurate mercury column for pressure verification.
Accutorr Plus Service Manual 8-1
Chapter 8 - Preventive Maintenance