OHAUS Navigator NV212 Service Manual Download Page 58 | Manualshive

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Ohaus Corporation
7 Campus Drive
Suite 310
Parsippany, NJ 07054
Tel: (973) 377-9000

With offices worldwide

www.ohaus.com

*83032210*

P/N 83032210 B © 2011 Ohaus Corporation, all rights reserved
™ Registered trademark of Ohaus Corporation.

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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Summary of Contents for Navigator NV212

Page 1: ...SERVICE MANUAL Navigator Series Scales...

Page 2: ......

Page 3: ...2 DIAGNOSTIC GUIDE 16 3 MAINTENANCE PROCEDURES 19 3 1 PREVENTIVE MAINTENANCE 19 3 2 OPENING THE SCALE 19 3 3 REPLACING THE LOAD CELL 21 3 4 REPLACING THE PRINTED CIRCUIT BOARD AND DISPLAY 23 3 5 REPL...

Page 4: ...ACTOR GEO 40 B 6 FILTER SETTINGS 41 B 7 STABILITY SETTING 41 B 8 AUTO ZERO SETTING 41 B 9 EXPANDED RESOLUTION E PAnd 42 B 10RESET 42 B 11END 43 APPENDIX C SOFTWARE SERVICE TOOL INSTRUCTIONS 44 C 1 HAR...

Page 5: ...eographical Adjustment Values 48 LIST OF ILLUSTRATIONS FIGURE NO TITLE 1 1 Power Connection 10 1 2 Navigator Overlay 10 1 3 Navigator Display Indicators 11 1 4 Menu Lock Switch 12 3 1 Pan Support and...

Page 6: ......

Page 7: ...ng a scale and after service Appendix B Service Calibration Describes the Service Menu and sub menus which allow authorized service personnel to perform factory Linearity and Span calibrations no pre...

Page 8: ...uthority Before returning the scale to service an approved representative of the local Weights and Measures authority must certify the scale Ohaus does not generally recommend the repair of an approve...

Page 9: ...sitivity 1 MPE 1 MPE NVL non Approved Model NVL511 NVL1101 NVL2101 NVL5101 NVL10000 NVL20000 Capacity g 510 1100 2100 5100 10000 20000 Repeatability g 0 2 0 2 0 2 1 2 2 Linearity g 0 2 0 2 0 2 1 2 2 O...

Page 10: ...0 4 2 2 2 Linearity g 0 2 0 4 2 2 2 OCL g 1 MPE 1 MPE 1 MPE 1 MPE 1 MPE Zero Drift 1e 5 C 1e 5 C 1e 5 C 1e 5 C 1e 5 C Span Sensitivity 1 MPE 1 MPE 1 MPE 1 MPE 1 MPE NVT EC OIML Type Approved Model NVT...

Page 11: ...ac 7 x 17 x 38 x 74 x 144 x 179 x lb oz dec NA 1lb 1 99oz x 0 01oz 2lb 6 8oz x 0 01oz 4lb 10 07oz x 0 01oz 9lb 0 63oz x 0 01oz 11lb 3 9oz x 0 02oz lb oz frac NA 1lb 1 oz x oz 2lb 6 oz x oz 4lb 10oz x...

Page 12: ...x 0 05 NV Models EC OIML Type Approved Units NV311M NV3100M ct 2550 x 0 5 15500 x 5 g 311 x 0 1 3100 x 1 kg NA 3 1 x 0 001 NV Models NTEP MC Type Approved Units NV311N NV3100N ct 2550 x 0 5 15500 x 5...

Page 13: ...0 74oz x 0 02oz 44lb 1 5oz x 0 05oz lb oz frac 1lb 1 oz x oz 2lb 6 oz x oz 4lb 10oz x oz 11lb 3 oz x oz 22lb 0 oz x oz 44lb 1 oz x oz ozt 16 395 x 0 005 35 365 x 0 005 67 517 x 0 005 163 96 x 0 02 321...

Page 14: ...x 0 02oz 22lb 0oz x 0 02oz 32lb 0oz x 0 05oz lb oz frac 3lb 3 oz x oz 6lb 6 oz x oz 16lb 0oz x oz 22lb 0oz x oz 32lb 0oz x oz ozt 46 665 x 0 005 93 33 x 0 01 233 32 x 0 02 320 85 x 0 02 466 65 x 0 05...

Page 15: ...6 4 x 0 002 16 x 0 005 NVT Models NTEP MC Type Approved Units NVT1601N NVT3200N NVT6400N NVT16000N ct 8000 x 5 16000 x 5 32000 x 10 80000 x 50 g 1600 x 0 5 3200 x 1 6400 x 2 16000 x 5 kg 1 6 x 0 0005...

Page 16: ...ection contains information on the basic operation of the scale The included AC adapter may be used to power the scale when battery power is not available Figure 1 1 Power Connection 1 6 1 Overview of...

Page 17: ...escription Long Press Toggles through active units Short Press in Menu Toggles through available settings Function Mode Back Short Press Selects function setting Long Press Selects active Mode Short P...

Page 18: ...d value has become stable 2 Indicates that the indicated value is within the center of zero 3 Symbols for weighing units or modes 4 Arrows indicate the current operation mode of the IR Sensors 5 High...

Page 19: ...y the approval agency To gain access to these submenus see the next section 1 7 LEGAL FOR TRADE LFT When the scale is set for LFT on M and N models the following menu settings cannot be accessed chang...

Page 20: ...is message confirms the proper setting of the LFT mode and the hardware lock switch Verify proper scale operation and that the required legal requirements are met CAL is locked available modes and uni...

Page 21: ...1 GETTING STARTED Navigator Series Service Manual 15 Ohaus Corporation www ohaus com TABLE 1 6 NAVIGATOR SERVICE MENU STRUCTURE Service Menu Menu Items Ramp Lin Span Geo Filter Stability AZT Expand Re...

Page 22: ...tion 3 6 3 Use the error code table for solutions for specific codes 4 Use the Diagnostic Guide locate the symptom then follow the suggested remedies in order 2 2 DIAGNOSTIC GUIDE Table 2 1 is a Diagn...

Page 23: ...nearity calibration Unstable environment vibration air currents or changing temperature Move scale to suitable location allow scale to stabilize its temperature Bad load cell Replace load cell Poor re...

Page 24: ...n scale service menu to check Load Cell and then calibrate Load Cell is damaged Replace Load Cell Err 8 3 Load Overload cap 9e Load exceeds balance maximum capacity remove weight from the pan Err 8 4...

Page 25: ...the scale using a damp cloth with warm water CAUTION DO NOT USE CHEMICAL CLEANERS OR SOLVENTS OF ANY TYPE SOME CLEANERS ARE ABRASIVE AND MAY AFFECT THE SCALE S FINISH 3 Check the Power Cord for broken...

Page 26: ...an Support Conductive Rubber Caps 3 Remove the Pan Support by removing the two screws shown in Figure 3 1 4 Remove the 5 screws holding the Top and Bottom Housings in place See Figure 3 2 Note NV mode...

Page 27: ...directly to the PCB Before disconnecting the cable record the wire colors and their location on the PCB Hint A digital picture is an easy and reliable record Disconnect the cable connecting the PCB t...

Page 28: ...ews so that the load cell can be aligned in the housing While holding the load cell fully tighten the screws The screws should be tight enough so that the load cell does not move when pushed from the...

Page 29: ...wires through their holes check that the new assembly is seated properly on the PCB and then solder the lead wires 3 5 REPLACING THE FUNCTION LABEL The Function Label may need to be replaced See Chapt...

Page 30: ...iver Each adjustment screw should contact the Base when 120 to 150 of the scale capacity is placed in the center of the 4 quadrants of the scale The Top Housing must be removed to visually check if th...

Page 31: ...scales must meet the requirements of ASTM Class 4 or OIML F2 Tolerance The mass values are listed in Table 4 1 TABLE 4 1 CALIBRATION MASS VALUES Model Span Calibration mass Linearity Calibration masse...

Page 32: ...the required batteries 2 Plug the Power Cord into a suitable power source 4 3 SEGMENT DISPLAY TEST Turn the scale on and ensure that all segments are enabled and displayed briefly This is a Segment Di...

Page 33: ...2 1 MPE NVT3201 1 2 2 3 NVT3200 N or M 1 1 2 1 MPE NVT6400 N or M 1 1 2 1 MPE NVT6401 1 2 2 3 NVT10001 1 2 2 3 NVT16000 1 2 2 3 NVT16000 N or M 1 1 2 1 MPE NOTE The following performance tests are use...

Page 34: ...5 2 Repeatability Test The repeatability specification is defined as the Standard Deviation value derived from a set of weight readings This test uses more weight data than the Precision Test and will...

Page 35: ...Deviation Square Root of sum of Delta x Delta 9 5 Add the ten readings and divide the total by 10 to find the Mean average 6 Mean Reading 1 Reading 2 Reading 3 Reading 4 Reading 5 7 Reading 6 Reading...

Page 36: ...g NV3100 N or M 750g 750g 1500g 2250g NVL5101 1250g 1250g 2500g 3750g NVL10000 2500g 2500g 5000g 7500g NVL20000 5000g 5000g 10000g 15000g NVT1601 400g 400g 800g 1200g NVT1601 N or M 400g 400g 800g 120...

Page 37: ...ve the mass halfway between the center and the edge to the front of the Pan Note any differences in the displayed weight reading 9 Repeat the test for the back left and right position of the Pan 10 Ma...

Page 38: ...f the reading at point B is negative file at points 1 and 2 STRAIGHT ACROSS 9 If the reading at point C is negative file at points 2 and 3 AT AN ANGLE 10 If the reading at point D is negative file at...

Page 39: ...ale in the field NOTE In all cases where a part is replaced the scale must be thoroughly checked after the replacement is made The scale MUST meet the parameters of all applicable specifications in th...

Page 40: ...CHAPTER 5 PARTS LISTS DIAGRAMS Ohaus Corporation www ohaus com 34 Navigator Series Service Manual 5 1 HOUSING INTERNAL PARTS Figure 5 1 Navigator NVL and NVT Housing Internal Parts...

Page 41: ...Housing Top No Labels 5 Housing Bottom Shipping Lock 6 Load Cell 7a Main PCB LCD 7b Main PCB LED 8a LCD Display and Backlight 8b LED Display 9 Cable Kit Power Adapter Jack Cable shown 10 Level Bubble...

Page 42: ...2 Press Yes to enter the sub menu SPAN will be the first menu item Press Yes again to accept the display will show a flashing C while the zero point weight data is stored C 3 The specified calibratio...

Page 43: ...ile a zero point weight data is stored C 4 The first linearity calibration point weight value will appear Place the weight on the pan Note Early production scales required a Yes press to continue The...

Page 44: ...e is increased The ramp display should remain constant without fluctuations If you press Yes to select Ramp a number appears It should be constant Add masses from minimum to maximum capacity The readi...

Page 45: ...ds and advances to SPAN Done Press Yes to confirm a span calibration SpaN B 4 SPAN CALIBRATION Span calibration from the service menu allows you to set a new zero and maximum setting This is distinct...

Page 46: ...accurately calibrate the scale at a location other than the location where the scale is to be used Prior to calibration the Geo Factor is set to correspond to the geographical location where the cali...

Page 47: ...etting menu FiLtEr The current filter setting is displayed Press No to increment the setting L2 Press Yes to accept the displayed value and advance to the next menu item Stability L3 B 7 STABILITY SET...

Page 48: ...e next menu item LFT Set 5d B 9 EXPANDED RESOLUTION E PAnd E PAnd sets the readability to 1 10th of the standard readability That is if standard readability is 01 with E PAnD on it would be 001 Raw sc...

Page 49: ...B 11 END Accepting End will exit the Service Menu In the Service Menu press No until EnD appears Press Yes to exit the service menu or No to advance to the ramp menu setting When the Service Menu is e...

Page 50: ...this setting is left ON the scale will shut off during configuration 2 Install the RS232 Interface Kit into the scale Follow the instructions in the RS232 Interface Kit User Manual 3 Plug the cable in...

Page 51: ...www ohaus com Figure C 2 Com Port Configuration screen 9 Click the Diagnostics tab to test the communications See Figure C 3 Figure C 3 Diagnostic screen Enter a P command The scale should respond wit...

Page 52: ...as old LED display store this data into EEPROM New LED version 1 MFG Enable service mode 2 esc NLED Define current display as old LED display store this data into EEPROM C 3 CONFIGURING THE SCALE If...

Page 53: ...us Corporation www ohaus com 3 Click Start 4 The bar is a graphical measure of the configuration progress 5 When the downloading is complete turn the scale off 6 Turn the scale on and perform a Servic...

Page 54: ...1 54 41 05 05 06 06 07 07 08 08 09 09 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 04 05 05 06 06 07 07 08 08 09 09 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18...

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Page 58: ...poration all rights reserved Registered trademark of Ohaus Corporation The information contained in this manual is believed to be accurate at the time of publication but Ohaus Corporation assumes no l...

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