Related Manuals for OHAUS 700 Series
Summary of Contents for OHAUS 700 Series
- Page 1 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Ohaus Corporation Toll Free 1-800-517-8431 29 Hanover Road Visit us at www.TestEquipmentDepot.com Florham Park, NJ 07932-0900 MECHANICAL BALANCES FIELD SERVICE / PARTS MANUAL...
- Page 2 ® The information contained in this manual is believed to be accurate at the time of publication, but Ohaus Corporation assumes no liability arising from the use or misuse of this material. Reproduction of this material is strictly prohibited. Material in this manual is subject to change.
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Page 3: Table Of Contents
Models 310 and 311 Specifications ........... 1-2 Series 700 Triple Beam Specifications ..........1-3 Series 1200 School Balance Specifications ........1-3 Model 700 Series Parts List .............. 4-2 Model 311 Cent-O-Gram Parts List ........... 4-3 Model 1200 School Balance Parts List ..........4-4 Model 1400 and 1500 Series Harvard Trip Balance Parts List .. -
Page 5: Chapter 1 Introduction
CHAPTER 1 INTRODUCTION 1.1 INTRODUCTION This manual is not to be considered a service manual for service technicians. This manual is designed to assist the end user for maintenance and making minor repairs. This manual contains information needed to perform routine field maintenance and service on the Mechanical Balances, Models: 310/311 with Hanging pan, Series 700 - Triple Beam, Series 1400 and 1500 - Harvard Trip Balance and Series 1200 - School Balance. -
Page 6: Tools And Test Equipment Required
1.3.1 Standard Tools and Test Equipment List 1. Standard Tool Kit. 2. Mass sets up to 2610 grams are required. Ohaus makes various calibration sets available. Please contact your nearest Ohaus dealer for further details. 1.4 TEST MASSES REQUIRED The masses required to test the Mechanical Balances must meet or exceed the requirements of ASTM Class 4 Tolerance. -
Page 7: Series 700 Triple Beam Specifications
CHAPTER 1 INTRODUCTION 1.5 SPECIFICATIONS (Cont.) TABLE 1-3. SERIES 700 TRIPLE BEAM SPECIFICATIONS Capacity (g) Capacity (g) with accessory mass set 2610 Readability (g) Calibrations: Front beam 10g x 0.1g Middle beam 500g x 100g Rear beam 100g x 10g TABLE 1-4. - Page 8 CHAPTER 1 INTRODUCTION...
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Page 9: Chapter 2 Care Of Mechanical Balances
CHAPTER 2 CARE OF MECHANICAL BALANCES 2.1 CARE OF BALANCES Mechanical balances are precision instruments and as such, they should be handled, treated and cleaned with care. This section briefly outlines some of the preventive handling and storing methods to be applied to mechanical balances. 2.1.1. - Page 10 CHAPTER 2 CARE OF MECHANICAL BALANCES...
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Page 11: Chapter 3 Servicing
CHAPTER 3 SERVICING 3.1 SERVICE OF SERIES 700 TRIPLE BEAM Refer to Figure 5-1 in Section 5 for identification of parts. NOTE: Non-removable Knife Edges, you must replace the Beam A. Non-Repeatability Problem: Damper Vane touching the end of Trig Loop Solution: Loosen the screw holding Trig Loop to Base and move it back. - Page 12 CHAPTER 3 SERVICING 3.1 SERVICE OF SERIES 700 TRIPLE BEAM (Cont.) C. No Beam Movement (Cont.) Problem: Check Pin Missing Solution: Replace. NOTE: There is a long rod under the Balance that is held in place by 2 pins. Problem: Broken Magnet Solution: Remove Trig Loop and replace Magnet.
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Page 13: Service Of Models 310/311 Hanging Pan Balance
CHAPTER 3 SERVICING 3.2 SERVICE OF MODELS 310/311 HANGING PAN BALANCE Refer to Figure 5-2 in Section 5 for identification of parts. A. Non-Repeatability Problem: Bent Damper Vane Solution: Straighten with fingers or needle nose pliers. (Note: Hold down Beam when performing this operation.) Problem: Foreign material on magnets Solution: Remove with adhesive backed tape. -
Page 14: Service Of Series 1200 School Balance
Balance at zero. Hold down one Pan and release. Repeat with other Pan. If Balance does not return to zero, Knife Edges are chipped or worn. Solution: Return balance to Ohaus for service. Problem: Bent Damper Vane. Solution: Bend Damper Vane with fingers or needle nose pliers. (Note: The easy way to observe this is to elevate the Balance with the Rod Support.) -
Page 15: Chapter 4 Parts Lists
Harvard Trip $70 NOTE: If further technical information is needed, in the United States call Ohaus Aftermarket toll-free 1-800-526-0659 between 8.00 a.m. and 4.00 p.m. EST. An Ohaus factory service technician will be available to provide assistance. Outside the U.S.A., please... -
Page 16: Model 700 Series Parts List
CHAPTER 4 PARTS LISTS TABLE 4-1. MODEL 700 SERIES PARTS LIST PART NO. DESCRIPTION 1008-23 Agate Bearing (4) 1023-10 Balance Cup [L1107-63 Screw] 1034-00 Friction Plate (3) 1035-03 Bearing Cover (4) 1039-02 Pan (Model 710) 1093-00 Check Pin (2) 1097-00... -
Page 17: Model 311 Cent-O-Gram Parts List
CHAPTER 4 PARTS LISTS TABLE 4-2. MODEL 311 CENT-O-GRAM PARTS LIST PART NO. DESCRIPTION 1008-23 Agate Bearing (4) 1034-00 Friction Plate (2) 1035-03 Bearing cover (2) 1097-00 Balancing Slug (3) 3551-01 Dial Assembly 4511-00 1g Poise Assembly 4512-10 200 g Graduated Beam Insert 4513-10 100 g Graduated Beam Insert 4514-10... -
Page 18: Model 1200 School Balance Parts List
CHAPTER 4 PARTS LISTS TABLE 4-3. MODEL 1200 SCHOOL BALANCE PARTS LIST PART NO. DESCRIPTION 2743-00 Red Pan 2743-01 Yellow Pan TABLE 4-4. MODEL 1400/1500 SERIES HARVARD TRIP BALANCE PARTS LIST PART NO. DESCRIPTION 1008-23 Agate Bearing (6) 1023-10 Balance Cup (2) (L-1107-63 Screw) 1034-00 Friction Plate (4) 1035-03... - Page 19 CHAPTER 4 PARTS LISTS GLOSSARY OF TERMS Agate Bearing: The V shaped Bearing that supports the Knife Edge. Balance Cup: The Plastic Cup that attaches to the Beam with a bolt and receives the Balance Plate, Cross or Fork. Bearing Cover: The Stainless Steel cover that holds the Friction Plate in place.
- Page 20 CHAPTER 4 PARTS LISTS...
- Page 21 If further technical information is needed, in the United States call Ohaus Aftermarket toll- free 1-800-526-0659 between 8.00 a.m. and 4.00 p.m. EST. An Ohaus factory service technician will be available to provide assistance. Outside the U.S.A., please contact:...
- Page 22 CHAPTER 5 DRAWINGS...
- Page 23 CHAPTER 5 DRAWINGS Figure 5-1. Typical Triple Beam Drawing. 5-3/5-4...
- Page 24 CHAPTER 5 DRAWINGS Figure 5-2. Models 310 and 311 Balance Drawing. 5-5/5-6...
- Page 25 CHAPTER 5 DRAWINGS Figure 5-3. Series 1200 Balance Drawing. 5-7/5-8...
- Page 26 CHAPTER 5 DRAWINGS Figure 5-4. Harvard Trip Balance Drawing. 5-9/5-10...
- Page 27 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com MECHANICAL BALANCES P/N 79815-01...
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