Service Manual - Ocean Networks Canada
Contents
1. Loctite Unscrew and remove the bolts that holds the head to the system Gently lift the head part up and out and place transducer down on the table Take care not to damage or stretch the cables or the O rings Unclip the cables the ground cable at the joint the main cable at the cicuit board Unscrew and remove the two nylon screws shown in the photo Add a little LocTite to the two nylon stand offs and screw them in place Carefully align the connector on the recorder with the one on the circuit board and gently press down Apply a little LocTite to the two screws and fasten the recorder to the stand offs Reattach the cables to the head Inspect the O rings before reassembling the system and take care not to damage the cables If needed add silicone grease to the O rings Important When reassembling make sure to fix the head correctly If not the X and Y axis will be wrong Fasten and tighten bolts well Erase recorder and check that the system reads the right recorder size Page 13 Installing a memory board AWAC midlife Apnjeae suog EEN FYI MOJOJ 93834 buo4 og y WAR A PUR X n 400 TT X jo uagoaup 339N iAmau2 peau au xij 03 GUNS axeuj jweewodwy scis JOa WHU stp Speal wagshs eu 3etp AID pue apio ae 3 gyunu pue p ieuse myD0 pim A quuesse ayy aanas Q pueoq weu au uo 40euuo2 bunp3ieu ayy 04 A 3usb y 3j pue 18p40084 ayy uonod nn 2 sgopue3s WIM sseduo ayy p2. aware that all data on the recorder will be erased when calibrating the pressure sensor Cancel Simple function test It s a good idea to run a simple function test before deploying 1 Start the instrument in continous sampling 2 Check that the various sensors gives reasonable values Pressure see that the pressure shows an offset according to the offset set earlier Check that the other sensors are giving reasonable values Page 10 4 3 INSTALLING A MEMORY BOARD Vector aquadopp and aquadopp profiler before midlife When ordering a memory upgrade from Nortek you will receive the following 1 Nylon standoffs 2 Short nylon screws 3 Nylon nuts 3 g 4 Mounting block hh a i 5 Threaded metal bolt 6 Sin BuENE L v 7 6 Long nylon screws j 7 Memory board E Remove the compass remove all screws and blocks with the exception of the right mounting block as shown Screw the metal bolt 5 through a mounting block 4 in the hole indicated Screw through the hole in the board and through another mounting block on the other side both blocks on the same side of the main board It is essential that the blocks are attached correctly NOTE that the block on the compass side of the card sticks out over the edge of the board whereas the block on the recorder side do not please note the positions of the various holes in the compass side mounting blocks It s es
3. critical component that keeps water out of the housing and the instrument dry Make a routing of O ring inspection maintenance and replacement e Check the o rings and the o ring grooves for grit hair lint sand or anything that could potentially breach the O ring seal After frequent deployments or if o rings or groves appear dirty remove o rings and clean the groves To remove o rings use finger pressure or the rounded edge of a plastic card to lift the O ring out of the grove CAUTION Never use a metal object to remove an O ring It may cause damage to the O ring or the sealing surface e o check o ings for damage place the O ring between the middle and index finger and thumb Then pull the O ring through your fingers feeling for any debris Or wear e f o rings are dirty it is best to replace them Washing dirty o rings with soap and water is not recommended Soap breaks down the lubricants and will compromise the integrity of the seal e Properly greased o rings will help maintain sealing integrity and minimize O ring degradation Use enough grease to lubricate the O ring thoroughly but not so much that it will attract additional debris e Clean the groove with a lint free swab or the folded edge of a paper towel Page 19 6 CABLES AND WIRES This chapter gives you the wiring for the most common cables The wiring is the same if the cable is circular or square In addition there is a table with which signals comes fro
4. mm minimum 57 25 mm If the diameter is less than this at any point along the circumference the head or endbell should not be re deployed and instead returned to Nortek 2 PLASTIC DEFORMATION The Nortek instruments are intended for use in water Other fluids may have an adverse effect on the plastic materials used For prolonged storage at elevated temperatures close to or at the specified limit or when temperature control is uncertain it is recommended that the screws securing the endcaps be loosened in order to minimize the risk of any deformation due to a temperature stress condition over time Do not use the moulded head or endbell as a clamping surface always clamp to the instrument housing 9459 RECOMMENDED TORQUE FOR SECURING SCREWS When installing the endcaps care should be taken when tightening down the screws When the O ring starts to be compressed turn each screw a little at a time until the O ring is fully compressed Tightening one screw fully before continuing on to the next may cause improper O ring seating and very high mechanical stress concentrated around the screw hole This may cause leaks and or damage to the head or endbell Page 18 The screws need only be tightened sufficiently for the O ring and spring washers to be fully compressed Over torquing has no positive effect and may damage the threads and or area around the screw holes on the head and endbell 5 4 O RING MAINTENANCE O rings are the
5. plug it into the Instrument Plug the appropriate ends into Terminal x the instrument and to the computer Make sure the AQUADOPP NORTEK AS 2000 Computer connector does Version 1 11 Command mode not easily fall out 4 Start the appropriate software Verify communication by clicking the connect button The software will aut om ati C ally fin d th e Clear ll Command file Command Send instrument and read its Log file Echoon Binan mode Hex commands Done current setup parameters Alternatively select Communication gt Terminal Emulator and press the Send Break button The instrument should respond with a message similar to the one in the screenshot 1 2 SENSOR CHECKS Prepare a test deployment which allows you to see data every second Click Deployment gt Planning For profiling instruments set profiling interval 1 sec For current meters measurement interval 1 sec For Vector Choose continuous sampling then click OK Start the test deployment by clicking On line gt Start Data Collection or click the Start Data Collection toolbar button he final test check list found in Appendix A is has been used at our factory for years and is a quick but good test of the system Page 5 1 2 1 TEMPERATURE Temperature should be close to your room temperature assuming the instrument has been in the room for a while to allow for the long time constant The temperature sensor is locat
6. GING THE OUTPUT POWER FOR AUXILIARY SENSORS 4 5 1 OLD ELECTRONICS You can change the output voltage level that is supplied to external sensors This is typically needed if an external analog sensor e g OBS operates in a specific voltage range and the raw battery power does not fall within this range The default output voltage level is RAW battery or external adapter This can be changed to 5V or to 12V by changing the position of a 0 O resistor Voltage level Resistor position Max current 3 z x ELS E Rus RR Example of how you can change the output voltage level from 5V RAWPOWER 1 5 4 12V DNM RAW to 12V 4 5 2 MIDLIFE ELECTRONICS Midlife electronics change the power levels with a simple command in the terminal emulator Page 16 Voltage level Command Max current OPWRBA OPWR5V Page 17 5 MECHANICAL ASPECTS 5 1 MECHANICAL TOLERANCES Watertight sealing of the instrument housing is provided by double O rings on the head and endbell sub assemblies The outer O ring forms the primary seal and the inner forms a secondary or backup seal When opening the instrument great care should be taken to keep the sealing surfaces clean and protected from mechanical damage If the instrument has been subjected to environmental conditions outside the specified design limits mechanical tolerances may be affected The diameter of the primary O ring seal should be 57 5
7. July 2011 N lt sz LLI HF aa e Z laiigere fieii o gam 3 Information sources for nortek products esse 3 1 uei 4 1 1 Inita TEST SECU p RM EE 4 1 2 DOC ao retry tegez st l 4 fF NEM ial pol eee ene eee ee eee ee ene eer ne eee eee ee eee E eee ee ee ee ee ee 5 N EM UL nen nn eee ee eee er ee ee E 5 NEMESIS c ec 5 E E cio D dane 6 1 3 sienal streneth and Pinging Checks 525oiesdec notoria ninne vea nekbe Ear aetas EL KEK esie bum EDD 6 1 4 Beam Amplitude and Velocity CheckS 2 ssss Cosa Una ez s t t t verti t tes 6 141 Gener l checks for all Instruments usoouoeeooos uan epa s euo Ren gne kenetet OS US MER RARA AEEA ARA ARAN AREA LENNENK EGK NENT 6 4 Working Inside an Instrument eese eese 8 4 eec dati LC teuit Board NT T 8 4 2 Chanset a Transducer Hoad anirien n ee a 9 4 3 Installing a Memory Roco 10 4 4 Changing the Wiring HatBesS sucoeeiu ior dei pure tete Eosdem vetu dut neke e pae eon VEua sco eua qnie det Riu Eod
8. Pel eua ein Lis k lde sudo be Five Pons 14 4 5 Changing the Output Power For Auxiliary Sensors eeeeeesssssssssssssseeeeeeee nennen nnne es 15 SEWER Old electr ONE Sieniniai un S 15 2 52 pajta ES Eee E E T fe eerie E E E E E E ee 15 5 Mechanical Aspects snsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnn 17 MI Meenanmical POI CEAH Bs ores sue Run ties eva ba d EneUbr E tk udi MEUS O Ua NBI DR et sak Ss DU dnUS e Ren UbIdIS 17 5 2 Ig red b fe gio T T E 17 5 3 Recommended Torque for Securing SCTEWS sssggg ge ezzess s s s t ee t e t t t t es 17 5 4 OTS WAM YO M e E E A E EA EI E m 18 6 Cables and Rd 19 Page 2 Appendix A Final test checklist eese 21 Page 3 INTRODUCTION The purpose of this manual is to aid in troubleshooting and re configuration tasks and is meant to be a supplement to the existing Operations Manuals Inevitably these manuals will overlap on certain points This manual covers the Aquadopp Aquadopp Profiler AWAC Continental and Vector instruments which bear many similarities to each other INFORMATION SOURCES FOR NORTEK PRODUCTS Manuals Every instrument comes with a manual There is valuable informatio
9. blocked beam will fall to around the noise level while the others will remain unaffected Velocity Change the beam coordinate system to XYZ Coordinates by clicking XYZ in the Advanced Deployment Planning menu Start the test deployment by clicking Online Start Data Collection or click the menu button Start Data Collection Click the Velocity tab to observe the X Y and Z velocities on the graphic display Move the instrument backwards and forwards at a constant velocity through the water along the X axis A positive and negative deflection of the X axis velocity should be observed on the the graphic display while the Y and Z axis velocities should remain around O m s Repeat the procedure for the Y and Z axis Ensure that the displayed velocities are reasonable Beam order and x y z definitions is available in the instruments manual Page 8 4 WORKING INSIDE AN INSTRUMENT When opening the instrument great care should be taken to keep the sealing surfaces clean and protected from mechanical damage 4 1 ACCESSING THE CIRCUIT BOARD The following procedure describes how to access the Paradopp circuit board the necessary tools can be found in the supplied toolkit Great care should be taken when opening the instrument to avoid mechanical damage to mating surfaces refer to Section 5 Remove the four 6 32 x 34 titanium screws and washers holding the end cap to the pressure case and remove the pressure case case Rem
10. catterers in the water some seeding material may be necessary We recommend carrying out initial testing in a test tank which is both convenient and provides a controlled environment After the tank test final testing can be carried outside in open water such as a lake river or sea Nortek can provide further details on suitable test arrangements on request Amplitude Start the test deployment by clicking Online Start Data Collection or click the menu button Start Data Collection Click the Amplitude or Profile tab to observe the amplitude of all beams on the graphic display Hold the instrument and immerse the transducers as deeply as Point each beam in turn slightly down from the horizontal relative to the transducer and away from any obstructions Note the amplitude of each beam displayed in counts All the beams Page 7 should have similar amplitude within 10 counts of each other When testing an profiling instruments the beams should be compared in the same cell normally the first one To get a better understanding please use Range Check for Aquadopps On Line gt Start Range check and Probe check for Vector and Vectrino On Line Start Probe check J As an additional check each beam can be blocked in turn by either holding each transducer out of the water while keeping the others immersed or by covering it with a suitable acoustic attenuating material such as a dense plastic or even a finger The amplitude of the
11. ed inside the sensor head and has a time constant of approximately 10 to 15 minutes There is an option in the software for adjusting the temperature This option will be removed in later software Only use this option if there is a large error in the readings and your timeframe doesn t allow to send it to repair before your deployment 1 2 2 TILT Hold the instrument and slowly tilt it in different directions verifying that the pitch and roll readings are sensible Be aware that the Vector needs to be oriented in the right up down orientation when starting it up down orientation will not be updated while measuring Defining pitch and roll 1 2 3 COMPASS Hold the instrument away from any magnetic influence like metal objects etc slowly rotate it in different directions verifying that the heading readings are sensible When testing a Vector click Stop Data Collection invert instrument click Start Data Collection and repeat above procedure Page 6 1 2 4 PRESSURE Please have in mind that the pressure sensor is not a depth meter but a pressure sensor Due to atmospheric pressure variations the sensor signal may have an offset please adjust this to a positive number before testing it e g 0 2m On line gt Set Pressure Offset Place the instrument in a suitable container filled with water approximately 0 5 m deep and verify that the pressure reading is correct 1 3 SIGNAL STRENGTH AND PINGING CHECKS First check t
12. he noise level of the instrument Pinging in air should produce a signal strength Amplitude of 45 55 counts for Vector 50 60 counts for Continental 15 30 counts for rest This signal level is called the noise floor When the instrument pings in air the velocity measurements will be nothing but noise Put the instrument in a bucket of water and observe the signal strength and the velocity The signal strength should rise noticeably the actual level depends on the size shape and material of the bucket and the velocity data should appear less noisy To get everything right the first time you may want to verify that your Nortek instrument actually emits pings before you deploy As described in our manuals this is done by means of a simple AM radio Actually this is a very simple thing to do A small portable AM radio is all you need Adjust the radio to the frequency of your Nortek instrument i e for a IMHz Aquadopp adjust the radio to 1MHz for a 600kHz system adjust it to 600kHz and so on Start the Nortek instrument and hold the radio close to the transducers What you now hear is the pings themselves they sound like a busy woodpecker Stop the test by clicking On line gt Stop Data Collection or press the Stop Data Collection button 1 4 BEAM AMPLITUDE AND VELOCITY CHECKS 1 4 1 GENERAL CHECKS FOR ALL INSTRUMENTS The following checks should be carried out in a suitable stretch of unobstructed water If there are insufficient s
13. m where in 24 pin connector at the electronics board This might be handy if there is need to change the wiring harness without time to receive it from Nortek Pin No Cco Cc05 CQn amp w screen Pin No m OJ JO A amp w No screen Wiring of RS 232 cable with analogue input Underwater connector nae Termination purpose _ Pine B Description twisted twisted white orange twisted white pair bare Gnd ground 3 bare wires for Gnd connected internally to power Gnd Wiring of 8 conductor cable for RS422 communication Underwater connector IEEE Termination Rem bare Power Gnd ground 3 bare wires for Gnd connected internally to power Gnd End bell Power Ground External Power Supply 4 Battery Supply X Analog Out Function Power Ground 7 ZAnalog Out RS 232Rx o 17 R42 00000000 LXI RS 422 Re RS 422 3 3V Supply grounded for RS 232 shorted to pin 23 for RS 422 N A Page 20 2 4 5 Inline 8 pin connector 6 Page 21 APPENDIX A FINAL TEST CHECKLIST Final test checklist rder number Head ID p NORTEK AS Hardware ID Vangkroken 2 N 1351 Rud Tel 47 6717 4500 in quiry n ort ek as com Aquadopp Comments www nortek no Aquadopp profiler Vedtor Uu ii awac Continental Dock test L_ ox Tilt check Pitch up Roll up Status bit Pitch down Roll down pitch Zrollu
14. n inside Nortek Forum http www nortek no forum There are over 500 conversations logged on this site It just might be that someone else has had a similar question or problem as you Many of these are answered on the forum If not and the answer could be of value for others start a new conversation and we will answer Internet hitp www nortek no Our newly redesigned webpage is now full of news upcoming event and product descriptions You can download instrument manuals and upgrade both firmware and software All information needed for returning for repair or integrating your instrument to others is also there Loads of technical notes and other Bibliography is ready to be downloaded Please use it and if you don t like it or something is missing let us know Page 4 1 FUNCTION TESTING jT INITIAL TEST SETUP Power Before you start testing the instrument be sure that it has a source of power Power will normally come from the internal battery or from the AC DC converter that is delivered with most systems Refer to Operations Manual for instructions on opening the end cap to plug in the battery You may also supply power from your own external supply If you use your own supply be sure the voltage does not exceed 16 V DC 18V DC for Continental and that it can supply 2 to 3 A Connect cables If your cable is new protect the cable connector by applying a thin layer of silicone lubricating spray to the pins before you
15. ove the four 6 32 x 4 titanium screws and washers holding the transducer head to the pressure case Slide out the head with the circuit board attached Page 9 4 2 CHANGING A TRANSDUCER HEAD The procedure for changing a transducer head also includes updating the instrument s head configuration file The only tools you need are 7 64 and 1 16 hex driver The following procedure outlines how to change the transducer head 1 Unscrew the three or four screws that secure the head to the housing Gently pull the main board If a you are working with a Vector remove the two bags of desiccant taped around the board and gently disconnect the ground strap on the reverse side of the board 2 Unscrew the two screws fixing the board to the head board and pull the head away from the board 3 Attach new head probe Be careful not to squeeze the cables Reattach dessiccant 4 Load new headfile into the instrument Connect the instrument to a PC In the instrument software choose Configuration Sensor Head Browse and select the new headfile received either as an e mail attachment or on an enclosed CD s 5 Set pressure offset in the instrument Set Pressure Offset EJ software choose On line gt Set Pressure Place instrument in water and enter the depth Offset of the pressure sensor IF irr air enter zera from the menu type in desired offset click Q K Pressure sensor depth m o Please be
16. sential that they are positioned correctly Note that the twin holes are positioned away from the center of the recorder compass sidem Page 11 Insert the two long nylon screws 6 through the holes in the compass and through the nylon standoffs 1 Carefully insert throught the holes on the main board opposite the mounting blocks Attatch two more standoffs and carefully position the recorder Fit gently to the connector on the main board Apply a little LocTite to the end Attatch the recorder and compass to the mounting blocks with the short nylon screws Apply a little LocTite to all plastic screws Cut off excessive length on the long 2w nylon screws Connect the compass Reassemble system Erase recorder and check that the system reads the right recorder size Installing a memory board with cable Some of the older systems will not fit the connector and need a cable between the board and the recorder It s essentially the same process as described on the reverse side The recorder board looks a little different Attach the cable to the main board before fixing the recorder to the main board Attach and bend the cable as shown to avoid cable getting caught while inserting the instrument into the housing Page 12 Installing a memory board AWAC before midlife 1 AWAC memory board 2 2x nylon screws 3 2x nylon stand offs Large screwdriver Adjustable wrench
17. ue pseog uieu eu uo sa ou eu ubnoatp Yaesu Anya en Z SHopuess ayy ubnoau pue T 4spaoos4 etg ul sajou ayy ubnoat G s s ps Guo ay uau q 42 p20de4 Wo paeoquieu jo epis 3560do pae oq ueu eq uo sseduuco au e ous y Page 14 4 4 CHANGING THE WIRING HARNESS You will find the nessecary tools in the toolkit that came with the instrument Use silicone grease and LocTite as described below if accessible 1 Unscrew the endbell remove the battery E 2 Unscrew the head and carefully pull the system out of the housing 3 Unscrew the two screws that holds the harness in place 4 Press the little tap on the connector and pull the harness off 5 Insert the longer screws as show add a little LocTite it is important that the holes in the mounting block are positioned correctly 6 Attach the screws to the new harness and align as shown 7 Attach the connector first 8 Align the mounting blocks with the holes in the main board 9 Add a little LocTite to the screws as above and fasten 10 Add a thin layer of silicone grease on the lip of the harness 11 Carefully insert the system into the housing 12 Make sure that there are no dust or particles on the o rings and that they are whole 13 Attach the head to the housing with the titanium bolts Make sure the bolts have both a spring washer and a flat washer 14 Insert and connect battery attach endbell Page 15 4 5 CHAN
18. vithin 0 2 toleence 0 1 Beam check Moise fl oor Amplitude Velocity in tank direction Ix LI E fiir te A Liz LJ v Head file Recorder erased L Headfile checked L OK Saved as read only Rec size MIB External sensors Power down d month ear go L Battery disconnected Date upon shipping Signaure
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