Chapter 1 Getting Started; Introduction; Service Facilities; Tools And Test Equipment Required - OHAUS VALOR 4000 Service Manual

1.1

INTRODUCTION

This service manual contains the information needed to perform routine maintenance and
service on the Ohaus Valor 2000/4000 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 and test
equipment, 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
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, and to set the service menu units.
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.
1.3

TOOLS AND TEST EQUIPMENT REQUIRED

The service shop should contain the following equipment:
1. Standard hand tools.
2. Digital Voltmeter (DVM).
3. Standard Electronics tool kit.
4. Grounding mat and clip.
5. Strain Gauge Simulator.
Valor™ 2000/4000 Series Service Manual
– Contains exploded views of Valor 2000/4000
Lists
1-1

CHAPTER 1 GETTING STARTED

Ohaus Corporation www.ohaus.com