OHAUS Defender D30BR, Service Manual

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CHAPTER 1 INTRODUCTION
1.1 INTRODUCTION
This service manual contains the information needed for diagnosis and repair of Ohaus
Defender B & V Series Bases. The contents of this manual are contained in five chapters:
Chapter 1 Introduction – Contains information regarding service facilities, tools and test
equipment, test masses, specifications, service strategy, and the mechanical and electronic
operation of the Base.
Chapter 2 Troubleshooting – Provides guidelines for evaluating the condition and
performance of a Base unit, and a standard troubleshooting methodology to follow, as well as a
diagnostic guide.
Chapter 3 Maintenance Procedures – Contains preventive maintenance procedures and
disassembly, repair and replacement procedures.
Chapter 4 Testing – Contains guides for operational and performance tests and adjustments.
Chapter 5 Drawings and Parts
Lists
– Contains exploded views of the Defender Bases and
parts, identifying all serviceable components with parts lists.
Before servicing the Base, you should be familiar with the Instruction Manual which is packed
with every base.
1.2 SERVICE FACILITIES
To service a Base, the service area should meet the following requirements:
•
Clean and level surface.
•
Away from magnetic fields such as motors or large transformers.
•
Free of vibrations such as fork lift trucks close by, large motors, etc.
•
Stable and level work surface.
•
Not exposed to direct sunlight or radiating heat sources.
Defender™ B & V Series Service Manual 1-1 Ohaus Corporation www.ohaus.com