OHAUS EXPLORER, Service Manual

Page: 13 / 114

1-3
CHAPTER 1 INTRODUCTION
1.3 TOOLS AND TEST EQUIPMENT REQUIRED
In order to properly service the Ohaus Explorer balances, certain Ohaus special tools and test items are required in addition
to standard electronic tool kits. These items are listed as follows:
1.3.1 Special Tools
1. 476000-03 Monoblock service tool kit
2. 476001-02 Analytical service tool kit
3. 11108525 Explorer Display Module, Capacities to 8kg
4. 450111-010 Explorer Display Module, Capacities over 12kg
5. AS017-09 Interface cable 9 Pin or AS017-02 Interface cable 25 Pin.
1.3.2 Standard Tools and Test Equipment
1. Digital Voltmeter (DVM) - Input impedance of at least 10 megohms in the 1 Volt dc position.
2. Torx driver Set
3. Torque wrench (optional) with a Phillips head bit, Tork bits, Allen bits, SAE and Metric
4. Box wrench, 7mm
5. Nutdriver, 3/16"
6. Hex or Allen key wrenches, 7/16", 9/64" or 3/32", M3 SAE and Metric Set
7. Other assorted hand tools, tweezers, adjustable open wrenches, etc.
8. Soldering iron (50 watt) and solder (rosin core solder, not acid core).
9. Solder remover.
10. Computer with at least 1 com port.
11. A communications program similiar to Hyper Terminal (supplied with Windows).
1.4 TEST MASSES REQUIRED
The masses required to test the Ohaus Explorer balances must meet the requirements of ASTM Class 1 Tolerance. The
calibration points are listed in Table 1-1. Use the least number of masses to reach the total.
TABLE 1-1. CALIBRATION POINTS
LINEARITY SPAN
CAPACITY MASSES TOTALING MASSES TOTALING
62g 20g/50g 50g
110g 50g/100g 100g
210g 100g/200g 200g
410g 200g/400g 400g
610g 200g/500g 500g
2100g 1000g/2000g 2000g
4100g 2000g/4000g 4000g
6100g 2000g/5000g 5000g
8100g 4000g/8000g 8000g
12000g 5000g/10000g 10000g
22000g 10000g/20000g 20000g
32000g 15000g/30000g 30000g