OHAUS Ranger 7000 R71MHD3, Service Manual

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Ohaus Corporation www.ohaus.com 4 Ranger 7000
®
Series Service Manual
1 GETTING STARTED
1.1
INTRODUCTION
This service manual contains the information needed to perform routine maintenance and service
on the Ohaus Ranger 7000
®
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 Ranger 7000
®
scales
identifying 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 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.
•
Handle all electronic assemblies with appropriate Electro-Static protection.