OHAUS FD SERIES Service Manual

Also see for FD Series: Instruction manual User guide Quick start guide

Contents

OHAUS FD SERIES Service Manual Manual pdf 10 page image

1-2CHAPTER 1 INTRODUCTION1.2 TOOLS AND EQUIPMENT1.2.1 Standard Tools and Test EquipmentThe service shop should contain the following equipment:1. Digital Voltmeter (DVM).2. Standard Electronics tool kit.3. Desk magnifier on a stand.4. Grounding mat and clip.5. Razor blades.1.2.2 Special ToolsTo service the Ohaus FD Series Scales, the following equipment is recommended:1. A Load Cell Simulator.2. AC Adapter, 120 V, 60 Hz (US) Ohaus P/N 805004353. AC Adapter, 220 V, 60 Hz (US) Ohaus P/N 805005214. AC Adapter, 230 V, 50 Hz (EU) Ohaus P/N 805004365. AC Adapter, 230 V, 50 Hz (UK) Ohaus P/N 805004376. AC Adapter, 240 V, 50 Hz (AU) Ohaus P/N 805004627. AC Adapter, 100 V, 50 Hz (JP) Ohaus P/N 71143794NOTE: Adapters required for servicing are location dependent.1.3 CALIBRATION MASSES REQUIREDThe masses required to test the FD Series Scales must meet the requirements of ASTM Class 4 or OIMLClass F2. The mass values are listed in Table 1-1. Bolded values are default settings.TABLE 1-1. CALIBRATION MASSESMODEL Span Cal Choices Linearity Cal (fixed) Service CalibrationCal in kg: Masses Totaling Masses Totaling Masses TotalingFD3 1 kg, 2 kg, 3 kg 1 or 2 kg & 3 kg 1 kg & 3 kgFD6 2 kg, 4 kg, 6 kg 2 or 4 kg & 6 kg 2 kg & 6 kgFD15 5 kg, 10 kg, 15 kg 10 kg & 15 kg 5 kg & 15 kg1.4 SERVICE STRATEGYThe repair method for the FD Series Scales is the direct substitution of major assemblies. The availablerepair parts are listed in Table 5-1.The FD Series Scales contains 4 major replaceable assemblies: Cover Assembly with Membrane Switch,Load Cell Assembly with Frame, Lead Acid Rechargeable Battery and the Main PC Board with LCD.NOTE: The Load Cell, LCD and Membrane Switch may also be ordered and replaced separately.This service manual contains sufficient information to isolate the problem, replace the component, testand restore the Scale to original factory specifications.