OHAUS Ranger 7000 R71MHD3 Service Manual

Also see for Ranger 7000 R71MHD15: Instruction manual

Contents

Ohaus Corporation www.ohaus.com 4 Ranger 7000® Series Service Manual1 GETTING STARTED1.1 INTRODUCTIONThis service manual contains the information needed to perform routine maintenance and serviceon the Ohaus Ranger 7000® Series scales. Familiarity with the scale’s Instruction Manual isassumed. The contents of this manual are contained in five chapters:Chapter 1 - Getting Started – Contains information on service facilities, tools, specifications, andthe 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 anddisassembly, repair and replacement procedures.Chapter 4 - Testing – Contains a list of required test masses, an operational test, segment displaytest, performance tests and adjustments.Chapter 5 - Drawings and Parts Lists – Contains exploded views of Ranger 7000® scalesidentifying all serviceable components.Chapter 6 – Entering to Service Menu- Explains method to enter to Service Menu.Appendix A - Communication – Explains the scale communication information.1.2 SERVICE FACILITIESTo service a scale, the service area should meet the following requirements:• Should be temperature controlled and meet scale specifications for temperatureenvironmental requirements.• Must be free of vibrations such as fork lift trucks close by, large motors, air currents or draftsfrom 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.• Handle all electronic assemblies with appropriate Electro-Static protection.