CHAPTER 1 GETTING STARTED
1.1 INTRODUCTION
This service manual contains the information needed to perform routine maintenance and
service on the Ohaus Valor 3000 Series scales. Familiarity with the scale’s Instruction Manual
is assumed. The contents of this manual are contained in five chapters:
Chapter 1 Getting Started
– Contains information on service facilities, tools, specifications,
and the mechanical and electronic functions of the scale.
Chapter 2 Troubleshooting
– Contains a diagnostic guide and error code table.
Chapter 3 Maintenance Procedures
– Contains preventive maintenance procedures and
disassembly, repair and replacement procedures.
Chapter 4 Testing – Contains a list of required test masses, an operational test, segment
display test, performance tests and adjustments.
Chapter 5 Drawings and Parts
Lists – Contains exploded views of Valor 3000 scales
identifying all serviceable components.
Appendix A Standard Calibration – Explains procedures for Standard Calibration, performed
prior to using a scale, and after service.
Appendix B Service Calibration – Describes the Service Menu and sub-menus, which allow
authorized service personnel to perform factory Linearity and Span calibrations (no pre-set
limits), take Ramp readings, adjust the GEO Factor, and use E.PAnd to set the readability to
1/10
th
of the standard readability.
Appendix C Software Service Tool Instructions – Used to re-configure the scale after
replacing a Printed Circuit Board or Load Cell.
Appendix D
Geographical Adjustment Values – The chart of scale settings for every
geographical latitude away from the equator (in degrees and minutes) and every elevation
above sea level (in meters or feet).
1.2 SERVICE FACILITIES
To service a scale, the service area should meet the following requirements:
• Should be temperature controlled and meet scale specifications for temperature
environmental requirements.
• Must be free of vibrations such as fork lift trucks close by, large motors, air currents or
drafts from air conditioning/heating ducts, open windows, people walking by, fans, etc.
• Area must be clean and free of excessive dust.
• Work surface must be stable and level.
• Scale must not be exposed to direct sunlight or radiating heat sources.
• Use an approved Electro-Static Device.
Valor™ 3000 Series Service Manual 1-1 Ohaus Corporation www.ohaus.com
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