OHAUS TROOPER SCALE, Service Manual

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1-2
CHAPTER 1 INTRODUCTION
DO NOT SERVICE the scale:
• Next to open windows or doors causing drafts or rapid temperature changes.
• Near air conditioning or heat vents.
• Near vibrating, rotating or reciprocating equipment.
• Near magnetic fields or equipment that generates magnetic fields.
• On an unlevel work surface.
• Allow sufficient space around the instrument for ease of operation and keep away from radiating
heat sources.
1.2 INTRODUCTION
This service manual contains instructions for the repair and maintenance work to be performed by
service engineers on the Trooper Scales. It is assumed that the reader is familiar with the operation
of the Scale and can refer to the relevant operating instructions when necessary.
This manual covers maintenance on the following:
Trooper Scales (capacities 3kg, 6kg, 15kg and 30kg.)
The contents of this manual is contained in five chapters.
Chapter 1 Introduction - Contains information regarding service facilities, tools and test equipment,
test masses, and specifications.
Chapter 2 Theory of Operation - Contains a basic information on circuit and loadcell operation.
Chapter 3 Troubleshooting - Contains a diagnosis/diagnostics chart and error code table.
Chapter 4 Maintenance Procedures - Contains preventive maintenance procedures, performance
tests and adjustments, repair procedures, service mode procedures, and calibration procedures.
Chapter 5 Drawings and Parts List - Contains exploded view of Trooper Scale identifying all
serviceable replacement components with parts list.
Before servicing the scale, you should be familiar with the Instruction Manual which is packed with
every Trooper Scale.
1.3 SERVICE FACILITIES
To service the Ohaus Trooper Scale, the service area should meet the following requirements: