OHAUS EB SERIES, Руководство по обслуживанию

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CHAPTER 1 GETTING STARTED
Ohaus Corporation www.ohaus.com 1-2 EB Series Scales Service Manual
1.2 TOOLS AND EQUIPMENT
1.2.1 Standard Tools and Test Equipment
The 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 Tools
To service the Ohaus EB Series Scales, the following equipment is recommended:
1. A Load Cell Simulator.
2. AC Adapter, 220 V, 60 Hz (US) Ohaus P/N 80120000
3. AC Adapter, 230 V, 50 Hz (EU) Ohaus P/N 80120001
4. AC Adapter, 230 V, 50 Hz (GB) Ohaus P/N 80120002
5. AC Adapter, 240 V, 50 Hz (AU) Ohaus P/N 80120003
6. AC Adapter, 100 V, 50 Hz (JP) Ohaus P/N 80120004
7. AC Adapter, 230 V, 50 Hz (KR) Ohaus P/N 80120005
NOTE
: Adapters required for servicing are location dependent.
1.3 CALIBRATION MASSES REQUIRED
The masses required to test the EB Series Scales must meet the requirements of ASTM Class
4 or OIML Class F2. The mass values are listed in Table 1-1.
TABLE 1-1. CALIBRATION MASSES
MODEL
Calibration Masses
Totaling
EB3
EB6
EB15
EB30
3kg
6kg
15kg
30kg
Note: The EB Scales can be calibrated over a wide range, however, it is recommended that the
calibration mass used is at or near the full capacity of the scale for maximum accuracy.
1.4 SERVICE STRATEGY
The repair method for the EB Series Scales is the direct substitution of major assemblies.
The available repair parts are listed in Table 5-1.
The EB Series Scales contain 6 major replaceable assemblies: Top Housing, Membrane
Switch, Load Cell Assembly with Frame, Lead Acid Rechargeable Battery, Display PC Board
with LCD and the Main PC Board.
Note: The Load Cell and LCD may also be ordered and replaced separately.