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OHAUS CS 2000 Service Manual
Summary of CS 2000
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Service manual valor ™ 4000 valor ™ 2000 ohaus corporation, 7 campus drive, suite 310, parsippany, nj 07054 (973) 377-9000
Page 2: Service Manual
Service manual valor ™ 4000 valor ™ 2000 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 ...
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Table of contents ohaus corporation www.Ohaus.Com i valor ™ 2000/4000 series service manual page no. Chapter 1 getting started 1.1 introduction ..............................................................................................................1-1 1.2 service facilities ......................
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Table of contents valor ™ 2000/4000 series service manual ii ohaus corporation www.Ohaus.Com chapter 4 testing 4.1. Testing .....................................................................................................................4-1 4.1.1 test masses required ...............................
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Table of contents ohaus corporation www.Ohaus.Com iii valor ™ 2000/4000 series service manual 4-3 linearity test masses ..........................................................................................4-5 5-1 housing & internal parts valor 4000pw ...............................................
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Chapter 1 getting started valor ™ 2000/4000 series service manual 1-1 ohaus corporation www.Ohaus.Com 1.1 introduction this service manual contains the information needed to perform routine maintenance and service on the ohaus valor 2000/4000 series scales. Familiarity with the scale’s instruction m...
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Chapter 1 getting started ohaus corporation www.Ohaus.Com 1-2 valor ™ 2000/4000 series service manual 1.4 specifications - valor 4000 complete specifications for the ohaus valor 4000 scales are listed in table 1-1. When a scale has been serviced, it must meet the specifications listed in the table. ...
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Chapter 1 getting started valor ™ 2000/4000 series service manual 1-3 ohaus corporation www.Ohaus.Com 1.6 scale operation – valor 4000 this section contains information on the basic operation of the valor 4000 scale. 1.6.1 overview of the controls figure 1-1. Valor 4000 front display with controls. ...
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Chapter 1 getting started ohaus corporation www.Ohaus.Com 1-4 valor ™ 2000/4000 series service manual led indicators figure 1-2. Valor 4000 back display. 1.6.2 power on/off to turn the scale on, press and hold the on/zero off button for 2.5 second. The scale performs a display test, momentarily disp...
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Chapter 1 getting started valor ™ 2000/4000 series service manual 1-5 ohaus corporation www.Ohaus.Com 1.6.3 menu setup programmable features of the valor 4000 scales are contained in menus which are accessed through the display panel’s control switches. See the instruction manual for a full descript...
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Chapter 1 getting started ohaus corporation www.Ohaus.Com 1-6 valor ™ 2000/4000 series service manual 1.7 scale operation – valor 2000 this section contains information on the basic operation of the valor 2000 scale. 1.7.1 overview of the controls figure 1-3. Valor 2000 front display with controls. ...
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Chapter 1 getting started valor ™ 2000/4000 series service manual 1-7 ohaus corporation www.Ohaus.Com figure 1-4. Valor 2000 back display. 1.7.2 power on/off to turn the scale on, press and hold the on/zero off button for 2.5 seconds. The scale performs a display test, momentarily displays the softw...
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Chapter 1 getting started ohaus corporation www.Ohaus.Com 1-8 valor ™ 2000/4000 series service manual 1.7.3 menu setup programmable features of the valor 2000 scales are contained in menus which are accessed through the display panel’s control switches. See the instruction manual for a full descript...
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Chapter 1 getting started valor ™ 2000/4000 series service manual 1-9 ohaus corporation www.Ohaus.Com 1.8 legal for trade note: this section applies to valor 4000 only. When the scale is used in trade or a legally controlled application it must be set up, verified and sealed in accordance with local...
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Chapter 2 diagnostic guide valor ™ 2000/4000 series service manual 2-1 ohaus corporation www.Ohaus.Com 2.1 troubleshooting this section of the manual contains troubleshooting information. Information is contained to isolate specific problems using table 2-4, diagnostic guide. Follow all directions s...
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Chapter 2 diagnostic guide ohaus corporation www.Ohaus.Com 2-2 valor ™ 2000/4000 series service manual 2.2.2 checking load cells for trouble 1. Perform a resistance test, to determine if the load cell is severely damaged or a short circuit to the frame has occurred. Note: the load cell must be compl...
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Chapter 2 diagnostic guide valor ™ 2000/4000 series service manual 2-3 ohaus corporation www.Ohaus.Com caution: in the next step, do not overload the scale beyond full capacity rating. – measure the voltages on +sig and –sig wires, disconnected from pcb. Note: measurements must be made with these wi...
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Chapter 2 diagnostic guide ohaus corporation www.Ohaus.Com 2-4 valor ™ 2000/4000 series service manual 2.2.3 testing the printed circuit board (pcb) the pcb can be tested by measuring voltages and by using a simulator. The simulator replaces the load cell during testing and is a useful tool for diag...
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Chapter 2 diagnostic guide valor ™ 2000/4000 series service manual 2-5 ohaus corporation www.Ohaus.Com general load test this test checks the main pc board circuitry by simulating accurate load cell voltages at zero load, 50% and 100% load capacities. Disconnect power from the scale, and remove the ...
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Chapter 2 diagnostic guide ohaus corporation www.Ohaus.Com 2-6 valor ™ 2000/4000 series service manual 2.2.4 diagnostic guide table 2-4. Diagnostic guide symptom possible cause remedy cannot turn on no power to scale battery discharged verify connections, power source and battery charge status. Poor...
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Chapter 3 maintenance procedures valor ™ 2000/4000 series service manual 3-1 ohaus corporation www.Ohaus.Com 3.1 preventive maintenance ohaus scales are precision instruments and should be carefully handled, stored in a clean, dry, dust-free area, and cleaned periodically. Follow these precautionary...
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Chapter 3 maintenance procedures ohaus corporation www.Ohaus.Com 3-2 valor ™ 2000/4000 series service manual 3.3.1 separating the top and bottom housings common hand tools are sufficient to disassemble the valor 2000/4000 scales. Turn the scale off and unplug the power cord before you begin. 1. Turn...
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Chapter 3 maintenance procedures valor ™ 2000/4000 series service manual 3-3 ohaus corporation www.Ohaus.Com figure 3-2. Top and bottom housings 3.4 removing/replacing the main pcb and display pcb if the pcbs are suspected of being faulty, they should be replaced, as follows: 1. Disconnect the c abl...
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Chapter 3 maintenance procedures ohaus corporation www.Ohaus.Com 3-4 valor ™ 2000/4000 series service manual 3.5 removing/replacing the load cell a load cell that is even slightly bent or corroded should be replaced. The load cell may also need to be replaced because of instability, or because the s...
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Chapter 3 maintenance procedures valor ™ 2000/4000 series service manual 3-5 ohaus corporation www.Ohaus.Com table 3-1. Mounting bolt torque settings model torque setting v41xwe1501t v22xwe1501t 6n to 8n v41xwe3t v22xwe3t 6n to 8n v41xwe6t v22xwe6t 6n to 8n v41xwe15t v22xwe15t 6n to 8n 7. Set overlo...
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Chapter 3 maintenance procedures ohaus corporation www.Ohaus.Com 3-6 valor ™ 2000/4000 series service manual table 3-2. Valor 2000/4000 overload stop gap settings model max. Capacity overload stop gap scale load cell a/b mm c/d mm v41xwe1501t v22xwe1501t 1.5kg 3kg 1.1 0.9 v41xwe3t v22xwe3t 3kg 5kg 1...
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Chapter 3 maintenance procedures valor ™ 2000/4000 series service manual 3-7 ohaus corporation www.Ohaus.Com 3.7 removing/replacing the rechargeable battery the valor 2000/4000 has a rechargeable battery. If it fails to recharge, replace it as follows: 1. Lift the battery’s front end enough to acces...
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Chapter 4 testing valor ™ 4000 series service manual 4-1 ohaus corporation www.Ohaus.Com 4.1 testing before and after servicing a valor 2000/4000 scale, an operational test and various performance tests should be made to confirm that the scale meets specifications. Turn the scale on and allow it to ...
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Chapter 4 testing ohaus corporation www.Ohaus.Com 4-2 valor ™ 4000 series service manual 4.4 performance tests accurate performance of the valor 2000/4000 scale is determined by a series of four performance tests. The displayed readings are compared with the tolerances listed for each test in table ...
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Chapter 4 testing valor ™ 4000 series service manual 4-3 ohaus corporation www.Ohaus.Com 4.4.2 repeatability test repeatability is the standard deviation of a set of similar weight readings. Requirements: – to perform this test a single mass must be used for all readings. – the test mass should be a...
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Chapter 4 testing ohaus corporation www.Ohaus.Com 4-4 valor ™ 4000 series service manual table 4-2. Repeatability worksheet n reading delta = reading – mean delta x delta 1 2 3 4 5 6 7 8 9 10 n = number of reading mean = sum of readings / 10 delta = reading – mean standard deviation = square root of...
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Chapter 4 testing valor ™ 4000 series service manual 4-5 ohaus corporation www.Ohaus.Com 4.4.3 linearity test this test is used to determine the linearity of the unit throughout its operating range. The masses used to perform this test can be utility masses note: the scale must pass the precision an...
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Chapter 4 testing ohaus corporation www.Ohaus.Com 4-6 valor ™ 4000 series service manual 5. Maximum allowable change in displayed weight readings for each of the four positions can be found in tables 1-1 (specifications, page 1-2). If this maximum is exceeded, follow procedures in section 4.4.5, adj...
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Chapter 5 parts lists & diagrams valor ™ 2000/4000 series service manual 5-1 ohaus corporation www.Ohaus.Com this section of the manual contains exploded views of the valor 2000/4000 scale. The exploded view drawings are designed to identify the parts which can be serviced on the scale in the field....
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Chapter 5 parts lists & diagrams ohaus corporation www.Ohaus.Com 5-2 valor ™ 2000/4000 series service manual 5.1 valor 4000pw scales: parts figure 5-1. Valor 4000pw scales: parts..
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Chapter 5 parts lists & diagrams valor ™ 2000/4000 series service manual 5-3 ohaus corporation www.Ohaus.Com table 5-1. Valor 4000pw scales: parts drawing item part number description 1 30035595 sp pan sst v22 v41 2 30035592 sp pan plastic v22 v41 3 30028583 overlay rear en v41pw 3 30035622 overlay ...
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Chapter 5 parts lists & diagrams ohaus corporation www.Ohaus.Com 5-4 valor ™ 2000/4000 series service manual 5.2 valor 4000xw scales: parts figure 5-2. Valor 4000xw scales: parts..
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Chapter 5 parts lists & diagrams valor ™ 2000/4000 series service manual 5-5 ohaus corporation www.Ohaus.Com table 5-2. Valor 4000xw scales: parts drawing item part number description 1 30035595 sp sst pan v22pw v41p(x)w 2 30035592 sp plastic pan v22pw v41p(x)w 3 30043147 overlay back en v41xw 30035...
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Chapter 5 parts lists & diagrams ohaus corporation www.Ohaus.Com 5-6 valor ™ 2000/4000 series service manual 5.3 valor 2000pw scales: parts figure 5-3. Valor 2000pw scales: parts..
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Chapter 5 parts lists & diagrams valor ™ 2000/4000 series service manual 5-7 ohaus corporation www.Ohaus.Com table 5-3. Valor 2000pw scales: parts drawing item part number description 1 30035595 sp pan sst v22 v41 2 30035592 sp pan plastic v22 v41 3 30035618 overlay back en v22pw 30035610 overlay ba...
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Chapter 5 parts lists & diagrams ohaus corporation www.Ohaus.Com 5-8 valor ™ 2000/4000 series service manual 5.4 valor 2000xw scales: parts figure 5-3. Valor 2000xw scales: parts..
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Chapter 5 parts lists & diagrams valor ™ 2000/4000 series service manual 5-9 ohaus corporation www.Ohaus.Com table 5-3. Valor 2000xw scales: parts drawing item part number description 1 30035595 sp pan sst v22 v41 2 30035592 sp pan plastic v22 v41 3 30035619 overlay rear v22xw 30035620 overlay rear ...
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Appendix a standard calibration valor ™ 2000/4000 series service manual a-1 ohaus corporation www.Ohaus.Com appendix a. Standard calibration & setup a.1 calibration standard calibration should be performed prior to using a scale, and after service. Caution: be careful not to touch the scale or the t...
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Appendix a standard calibration ohaus corporation www.Ohaus.Com a-2 valor ™ 2000/4000 series service manual a.2 setup and calibration note: be sure units are set to kg before starting calibration. 1. Turn on the scale. Press and hold menu (cal on valor 2000) until [mmenu] (menu) is displayed. When t...
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Appendix b service calibration valor ™ 2000/4000 series service manual b-1 ohaus corporation www.Ohaus.Com appendix b. Service calibration this section describes the service menu and sub-menus, which allow authorized service personnel to perform factory linearity and span calibrations (no pre-set li...
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Appendix b service calibration ohaus corporation www.Ohaus.Com b-2 valor ™ 2000/4000 series service manual b.3 ramp menu when rammp appears, press yes to accept the ramp menu, or no to advance to the expand menu item. The ramp value is displayed as a percent of the a/d range. Press yes to advance to...
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Appendix b service calibration valor ™ 2000/4000 series service manual b-3 ohaus corporation www.Ohaus.Com note: if calibration fails, ensure that the test area is free from drafts and the surface the scale rests on is level and free of vibrations. Then try to calibrate again. If it continues to fai...
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Appendix b service calibration ohaus corporation www.Ohaus.Com b-4 valor ™ 2000/4000 series service manual b.7 divs when divs appears, press yes to accept the divs menu item, or press no to advance to the next menu item. Set the division to either hi or low. High = 6000 / 7500 resolution low = 3000 ...