Manuel d'utilisation / d'entretien du produit 7532 du fabricant Lightning Audio
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Varec, Inc. 5834 Peachtree Corners East, Norcross (Atlant a), GA 30092 USA Tel: +1 (770) 447 -9202 Fax: +1 ( 770) 662-8939 www.varec.com IOM027FVAE0804 7532 Radar T ank Gauge Smart transmitter for continuous and non-contact precision level measurement.
2 Installation and Operations Manual Radar Tank Gauge Brief operating instructions Note! This operating manual explains the i nstallation and initial star t-up for the level transmitter measuring device. All functions that are required for a typical measuring task are taken in to account here.
Radar Tank Gauge Table of Contents IOM027FVAE0804 3 T a ble of Content s 1 Safety Instructions ............. ................ ....... 4 1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . 4 1.2 Installation, commissioning and operation .
Safety Instructions Radar Tank Gauge 4 Installation and Operations Manual 1 Safety Instructions 1.1 Designated use The Varec Model 7532 R adar Tank Gauge (RTG ) is a compact radar level transmitter for the continuous, contactless measurement of liqu ids, pastes and sludg e in stilling wells.
5 7532 Safety Instructions 1.4 Return The following procedures must be carried out before a transmitter is sent to Varec for repair: • Always enclose a duly comple ted “Decla ration of contamination” form. O nly then can Varec transport, examine and repair a returned device.
Safety Instructions Radar Tank Gauge 6 Installation and Operations Manual 1.5 Notes on safety conventions and symbols In order to highlight safety-r elevant or alternative operating procedures in the manual, the following conventions have be en used, each indicated by a corresp onding symbol in the margin.
7 7532 Identification 2 Identification 2.1 Device designation 2.1.1 Nameplate and Certification Plates The following technical data are gi ven on the instrument nameplate: Figure 1: Information on the.
Identification Radar Tank Gauge 8 Installation and Operations Manual 2.1.2 Ordering structure Ordering str uctur e 7532 RT G 10 Certif icates Basic weight A For non-hazardous areas 6.
9 7532 Identification 40 Output and operat ion A 4…20 mA HART with VU 331, 4-line alphan umeric dis- play YS p e c i a l v e r s i o n 50 Housing C Aluminium T12-housing w ith separate connection compartment , coated, IP65 YS p e c i a l v e r s i o n 60 Gland / Entry 2 M20x1.
Identification Radar Tank Gauge 10 Installation and Operations Manual 2.2 Scope of delivery Caution! It is essential to follow the instructions concerning the unpacking, transport and storage of measuring instruments given in the section “Incoming acceptance, transport, storage” on page 12.
11 7532 Mounting 3 Mounting 3.1 Quick inst allation guide Note! The 7532 RTG with planar antenna is designe d for use on stilling-wel ls only! 3 1 2 90˚ . . T12 housing T urn housing Installation only in stilling well: The perfor mance of the 7532 RTG planar antenna is not dependent on the alignment or geometry of standard stilling wells.
Mounting Radar Tank Gauge 12 Installation and Operations Manual 3.2 Incoming accept ance, transport, storage 3.2.1 Incoming accept ance Check the packing and contents for any signs of damage. Check the shipment, make sure nothing is mi ssing and that the scope of supply matches your order.
13 7532 Mounting 3.3 Inst allation Conditions 3.3.1 Dimensions Figure 4: Dimensions 7532 RTG Note! The inactive length of 60 mm prevents co ndensation effects to th e antenna perfor- mance.
Mounting Radar Tank Gauge 14 Installation and Operations Manual 3.3.2 Engineering tip s Measuring conditions • The measuring range star ts at the bottom end of the stilling well. • In case of media with a low dielectric cons tant (groups A and B), the pipe end can be visible through the medium at low levels.
15 7532 Mounting Measuring range The usable measuring range depends on the si ze of the antenna, the reflectivity of the medium, the mounting location, and ev entual interference reflections. The following tables describ e the groups of media as well as the achiev able measuring range as a function of application and medi a group.
Mounting Radar Tank Gauge 16 Installation and Operations Manual Blocking distance The blocking distance (= BD) is the minimum di stance from the reference point of the measurement (mounting flange) to th e medium surface at maximum level. Note! Inside the blocking di stance a reliab le measurement can not be guaranteed.
17 7532 Mounting 3.4 Inst allation instructions 3.4.1 Mounting kit In addition to the tool needed for flange mounting, you will r equire the following tool: • 4 mm Allen wrench for turning the housing.
Mounting Radar Tank Gauge 18 Installation and Operations Manual Examples for the construc tion of s tilling we lls 7532 RTG 7532 RTG L00-FMR532 xx-17-00-00-en -004.
19 7532 Mounting 3.4.3 T urn housing After mounting, the housing can be turned 350° in order to simplify access to the display and the terminal compartment.
Mounting Radar Tank Gauge 20 Installation and Operations Manual 3.4.4 Inst allation with V arec UNI flange Installation tip s Varec UNI flange s are designed for non-pressurize d operation respe ctively max. 1 bar absolute pressure . The number of bolts has sometimes been red uced.
21 7532 Mounting Prepar ation f or the installation of the V ar ec UNI flange R 532xx-00-00-06 -en-002.
Mounting Radar Tank Gauge 22 Installation and Operations Manual 9 Ø 78 17 16 detail A flange hub for the connection to flanges provided by the customer flange hub O-Ring 85.3 x 3.53, included (same material as sensor seal) mounting: 4 bolts M6 / 90˚ e.
23 7532 Mounting 3.4.5 Mounting with Sample hatch on stilling well Installation tips For control and cleaning purp oses as well as for hand di pping (tape), a sa mple hatch gauging is r ecommended. The se nsor hea d can be easily checked in the ar ea of the opening.
Mounting Radar Tank Gauge 24 Installation and Operations Manual 3.4.6 Mounting with Pivoting element Installation tip s The Pivoting element serves to swivel the 7500 RTG from the measuring position, e.g. to clean the antenna or dip the tank. The pivoting element is not part of the stan dard offeri ng from Varec, special offers available under ref.
25 7532 Wiring 4 Wiring 4.1 Quick wiring guide When grounding conductive sc reens, the corresponding directives EN 60079-1 4 and EN 1127-1 must be observed.
Wiring Radar Tank Gauge 26 Installation and Operations Manual 5 - - 12 3 4 12345 1 3 2 4 5 2 4 3 1 plant ground power: 24 VDC (16…30 V) signal: 24 VDC Connect up the 7500 RTG as follows: Before unscre w housing cover (2) at seperate connection room turn off the power supply! Inser t cable through gland (3).
27 7532 Wiring W iring with T ank Side Monitor 4590 - 12345 1 3 2 4 5 RTD NRF 590 i.s. ter minal board i.s. module wiring HART sensor + - - + 16 17 18 19 D+ S+ S- D- 20 21 22 23 OPT1 OPT2 OPT3 OPT4 24.
Wiring Radar Tank Gauge 28 Installation and Operations Manual 4.2 Connecting the measuring unit T er minal compar tment The housing comes with a sepa rate terminal compartment. Load HART Minimum load for Hart communication: 250 Ω Cable entr y Cable gland: M20x1.
29 7532 Wiring 4.2.1 Connection to T ank Side Monitor 4590 See page 27. 4.2.2 HART connection with two V arec RN 221 N 4.2.3 HART connection with other supplies Caution! If the HART communication resistor is not buil t into the supply unit, it is necessar y to insert a c ommunication resis tor of 250 Ω into the 2-wire line.
Wiring Radar Tank Gauge 30 Installation and Operations Manual 4.3 Equipotential bonding Connect the Equipotential bonding to the exte rnal ground terminal of the transmitter. Caution! In Ex applications, the inst rument must only be grounded on the sensor side.
31 7532 Operation 5O p e r a t i o n 5.1 Quick operation guide.
Operation Radar Tank Gauge 32 Installation and Operations Manual L00-FMR2xxxx-19-00-00-en-001 X X X X S SS O OO FF >3 s F E + – ... 2x ... ... Selection and configuration in Operation menu: Group.
33 7532 Operation 5.1.1 General structure of the operating menu The operating menu is made up of two levels: • Function groups (00, 01, 03, …, 0C, 0D): The individual operating options of the instrument are split u p roughly into different function groups.
Operation Radar Tank Gauge 34 Installation and Operations Manual 5.2 Display and operating element s Figure 5: Layout of the display and operating elements 5.2.1 Display Liquid cr ystal display (LCD): Four lines with 20 characters each. Di splay contrast adjustable throu gh key combination.
35 7532 Operation 5.2.2 Display symbols The following tabl e describes the sy mbols th at appear on the liquid crystal display: Table 1: Meaning of the symbol s Light emitting diodes (LEDs): There is a green and a red LED besides the Liquid Crystal Display.
Operation Radar Tank Gauge 36 Installation and Operations Manual 5.2.3 Key assignment The operating elements are located inside the housing and are accessib le for operation by opening the lid of the housing.
37 7532 Operation 5.3 Local operation 5.3.1 Locking of th e configuration mode The 7500 RTG can be protected in two ways against unauthorized ch anging of instru- ment data, numerical valu es or factory settings: " unlock parameter " (0A4): A value <> 100 (e.
Operation Radar Tank Gauge 38 Installation and Operations Manual 5.3.2 Unlocking of configuration mode If an attempt is made to change parameters when the instrument is locked, the use r is automatica.
39 7532 Operation 5.3.3 Factory settings (Reset) Caution! A reset sets the instrument back to the facto ry settings. This can lead to an impairme nt of the measurement.
Operation Radar Tank Gauge 40 Installation and Operations Manual 5.4 Display and acknow ledging error messages Type of err or Errors that occur during commissioning or measuring are displayed immediately on the local display. If two or more system or proc ess errors occur, the error with the highe st priority is the one shown on the d isplay.
41 7532 Operation 5.5 HART communication Apart from local operati on, you can also parameterize th e measuring instrument and view measured v alues by means of a HART pr otocol. There are two options available for operation: • Operation via the universal handheld operating unit, the HART Communicator DX R 375.
Operation Radar Tank Gauge 42 Installation and Operations Manual Note! Further information you may find on the CD-ROM, w hich is enclosed to the instrument.
43 7532 Operation 5.5.3 Commuwin II-O perating Program Commuwin II is an operating softw are with graph ical support for intellige nt transmitters with the communication protocols Rackbus, Rackbus RS 48 5, INTENSOR, HART or PROFIBUS-PA. It is compatible with the op erating systems Win 3.
Operation Radar Tank Gauge 44 Installation and Operations Manual.
45 7532 Commissioning 6 Commissioning 6.1 Function check Make sure that all final checks have be en completed before you start up your measuring point: • Checklist “Post installation check” (see page 24). • Checklist “Post connection check” (see page 30 ).
Commissioning Radar Tank Gauge 46 Installation and Operations Manual 6.3 Basic Setup.
47 7532 Commissioning SD F L D BD E flange: reference point of measurement ... (for b ypass/stilling well) (description see BA 217F) E = empty calibr. (= zero) settings in 005 settings in 006 D = distance (distance flange / product) L display in 0A5 in 0A6 F = full calibr.
Commissioning Radar Tank Gauge 48 Installation and Operations Manual To successfully commission a precise measurement to the ne arest mm, it is imp ortant you carry out a history reset on first in stallation after mechanical installation and after the basic setup of the device (see Pa ge 56).
49 7532 Commissioning 6.4 Basic Setup with the VU 331 Function "measured value" (000) This function displays the curre nt measured value in the se lected unit (see " customer unit " (042) function). The number of digi ts after decimal point can be selected in the " no .
Commissioning Radar Tank Gauge 50 Installation and Operations Manual Function "medium proper ty" (003) This function is use d to se lect the dielectric constant. Selection: • unknown •< 1 . 9 • 1.9 ... 4 • 4 ... 10 •> 1 0 3)Treat Ammonia NH3 as a medium of gr ou p A, i.
51 7532 Commissioning Function "process cond." (004) This function is used to select the process conditions. Selection: • standard • calm sur face •t u r b .
Commissioning Radar Tank Gauge 52 Installation and Operations Manual Function "empty calibr ." (005) This function is used to en ter the distance from the flan ge (reference poi nt of the measurement) to the minimum level (=zero).
53 7532 Commissioning Note! If byp a s s or stilling well was selected in the " tank shape " (002) function, the pipe diameter is requeste d in the following s tep. Function "pipe diameter" (007) This function is used to ente r the pipe diameter of the stilling well or bypass pipe.
Commissioning Radar Tank Gauge 54 Installation and Operations Manual Function "chec k distance" (051 ) This function trigg ers the mapping of i nterference echoes. To do so, the meas ured distance must be compare d with the actual distance to t he product surface.
55 7532 Commissioning Function "range of ma pping" (052) This function displays the sug gested range of mapping . The reference point is alway s the reference point of the measurem ent (see page 46). This va lue can be edited by the operator.
Commissioning Radar Tank Gauge 56 Installation and Operations Manual Display "dist./meas.value (008)" The distance measured from the reference point to the product surface and the level calculated with the aid of the empty alignment are disp layed again.
57 7532 Commissioning 6.5 Mounting calibration with VU 331 6.5.1 Function group "m ounting calibr ." (03) Function "tank gauging" (030) Using this function, you can either enter a dip table or carry out an auto-correction.
Commissioning Radar Tank Gauge 58 Installation and Operations Manual correction table), the maximum permissible fil ling speed is 100 mm level change / min.
59 7532 Commissioning Display "custody mode" (0A9) This indicates the instrument calibration mode . The calibration mode (active) can be set using the hardware security lock on the electro nics (see Page 34) . Selection: • inactive •a c t i v e p o s .
Commissioning Radar Tank Gauge 60 Installation and Operations Manual Dip table The dip table is used to correct the level readi ngs of the 7500 RTG usin g independently taken hand dips. The d ip table is used in particular to adapt the level gauge to the specific application condition s as mechan ical offset and tank/s tilling well design.
61 7532 Commissioning Note! The dip table can be printed out using the ToF-Tool. Before doing this, the ToF Tool must be reconnected to the instrument in orde r to update the values within the ToF Tool. Note! Make your inp uts into the di p table in semi-automatic mod e.
Commissioning Radar Tank Gauge 62 Installation and Operations Manual manual The value pairs in the dip table can be read and w ritten. You can enter the meas ured value and the dip value. –uncorrected measured value: This is the measured value supplied by the instrument, NOT corrected by the dip table.
63 7532 Commissioning Function "dip table handl." (036) Use this function to enter the dip value (l ev el or distance) which will correct the mea- surement values.
Commissioning Radar Tank Gauge 64 Installation and Operations Manual delete point The currently displayed point is deleted from the table. After deletion, the previous point is displayed. If the table only consisted of one point before deletion, then the current measured vari able is dis played as a va lue pair.
65 7532 Commissioning 6.5.2 Envelope curve with VU 331 After the basic setup, an evaluation of th e measurement with the aid of the envelope curve (" displa y " (09) function group) is recommended. Function "plot settings" (09A) Here you can select which information is shown on the display: • envelope curve • env.
Commissioning Radar Tank Gauge 66 Installation and Operations Manual 6.6 Basic Setup with the T oF T ool To carry out the basic setup with the ToF T ool operating program, proceed as follows: • Star.
67 7532 Commissioning Basic Se tup step 2/5 : • Enter the application parameters: –tank shape (for a desc ription, see page 49) –medium property (for a description, see pag e 50) –process cond.
Commissioning Radar Tank Gauge 68 Installation and Operations Manual Note! You can also specify the pipe diameter in this display . Basic Setup step 4/5: • This step starts the tank mappi ng • The.
69 7532 Commissioning 6.6.1 Envelope curve with the T oF T ool After the basic setup, an evaluation of th e measurement using the envelope curve is recommended. 6.6.2 User-specific applications (operation) T o set the parameters of user-specific app lications, see the 7500 R TG "Service manual and description of in strument functions".
Commissioning Radar Tank Gauge 70 Installation and Operations Manual 6.7 Mounting calibr ation with the T oF T ool To carry out the basic setup with the ToF T ool operating program, proceed as follows: • Start the ToF Tool operating pr ogram and establish a connection • Select the "mounting calibr.
71 7532 Commissioning Mounting calibra tion step 2/2: • dip table mode (descr iption see page 61) • meas. v. (description see page 62) •d i p v a l u e ( s e e p a g e 6 2 ) • dip table handl. (descr iption see page 63) • dip table state (description see page 61) • left dip t.
Commissioning Radar Tank Gauge 72 Installation and Operations Manual.
73 7532 Maintenance 7 Maintenance The 7500 RTG measuring instrume nt requires no special maintenance. Exterior c leaning When cleaning the exterior of measuring devices, always use cleaning agents that do not attack the surface of the housing and the seals.
Maintenance Radar Tank Gauge 74 Installation and Operations Manual.
75 7532 Accessories 8 Accessories Various accessories, which can be ordered separately from Varec, are available for the 7500 RTG. Wea ther pr otection co v er A Weather protection cover made of stainl e ss steel is available for outdoor mounting (order code: 543199-0001).
Accessories Radar Tank Gauge 76 Installation and Operations Manual.
77 7532 Troubleshooting 9 T roubleshooting 9.1 T roubleshooting instructions.
Troubleshooting Radar Tank Gauge 78 Installation and Operations Manual 7500 RTG - Troubleshooting L00-FMR53xxx-19-00-00-en-010.
79 7532 Troubleshooting 9.2 System error messages Code Descriptio n Possible cause Remedy A102 checksum error general reset & ne w calibr.required device has been powered off before data could be .
Troubleshooting Radar Tank Gauge 80 Installation and Operations Manual A270 custody switch undef check position switch for custody transfer may be defective check position of custody switch exchange e.
81 7532 Troubleshooting 9.3 Application errors Error Output Possible cause Remedy A warning or alarm has occurred. Depending on the configuration See table of error messages (see page 79) 1. See table of error messages (see page 79) Measured value (00) is incorrect Measured distance (008) OK? yes → 1.
Troubleshooting Radar Tank Gauge 82 Installation and Operations Manual Error Output Possible caus e Remedy If the sur face is not calm (e.g. filling, emptying, agi- tator run- ning), the measured value jumps sporad- ically to a higher level Signal is weak ened by the rough surface — the interfere nce echoes are sometimes stronger 1.
83 7532 Troubleshooting 9 . 4 Spa r e pa r ts Note! You can order spare parts directly from your Varec service organization by giving the order code and the serial number which is printed on the measuring transducer nameplate (see pa ge 7). The corresp onding sp are part number also appears on each spare part.
Troubleshooting Radar Tank Gauge 84 Installation and Operations Manual 7532 RTG The customer may e xchange modular assemblies in accordance with Varec instructions! L00-FMR532xx- 00-00-06-en-00 1.
85 7532 Troubleshooting Modification namepla te When ordering part s that are list ed in the prod uct structure (see page 8) , a check must be made as to whethe r the instrument descript ion on the nameplate is sti ll valid, e.
Troubleshooting Radar Tank Gauge 86 Installation and Operations Manual Housing T12 The complete order code must be specified when ordering the replaceme nt housing so that the correct nameplate can be delivered, e.g. • 7532 RTG-AACWJAC1AA You must label the nameplate yourself.
87 7532 Technical data 10 T echnical dat a 10.1 T echnical dat a at a glance Application Application The 7500 RTG is used fo r highly accu rate level measurem ent in storage tanks and can be applied in custody transfer applicati ons. It meets the relevant requirements according to OIML R85 and API 3.
Technical data Radar Tank Gauge 88 Installation and Operations Manual Auxiliary ene rgy Electrical connection Housing T 12 with separate terminal co mpartment. Load HART Minimum load for HART communication: 250 Ω Cable entry Cable gland: M20x1 .5 or Pg13.
89 7532 Technical data Inventory Control Ver- sions All device types can be delivered as "In ventory Control Version s" with a reduced accuracy of ± 3mm ( under reference conditi ons). To these versions, the calibration ce rtificate or custody tr ansfer type approval is NOT attached.
Technical data Radar Tank Gauge 90 Installation and Operations Manual Mechanical cons truction Design, dimensions S e ep a g e1 3 Weight Approx 6 kg + weight of flange Material S e ep a g e8 Process connection see page 8 All process connections dispose of a gas-tight glass feed-through to prevent any gas leakage to the inside of the housing.
91 7532 Appendix 11 A p p e n d i x 1 1.1 Operating menu HART (Display modul), T oF T ool.
Appendix Radar Tank Gauge 92 Installation and Operations Manual safety settings basic setup output on alarm MIN -10% 3.6mA hold MAX 110% 22mA user specific tank shape dome ceiling horizontal cyl. bypass stilling well flat ceiling sphere tank gauging auto correct.
93 7532 Appendix dist./meas.value D and L are displayed simulation sim. off sim. level sim. volume sim. current sep. character . point , comma measured dist. distance unit max. scale max. scale safety distance from blocking distance default: 0.1m dist.
Appendix Radar Tank Gauge 94 Installation and Operations Manual 1 1.2 Operating matrix HART / Commuwin II.
95 7532 Appendix Operating Matrix HART / COMMUWIN II Function group V-CWII H0 H1 H2 H3 H4 H5 H6 H7 H8 H9 00 basic setup V0 measured value tank shape medium property process cond. empty calibr. full calibr. pipe diameter 01 safety settings V1 output on alarm output on alarm outp.
Appendix Radar Tank Gauge 96 Installation and Operations Manual 1 1.3 Description of functions Note! A detailed descriptio n of the function group s, functions and parameters is given in the the 7500 RTG "S ervice manual and descriptio n of instrum ent functions" .
97 7532 Appendix 1 1.4 Function and system design 1 1.4.1 Measuring principle The 7500 RTG is a "downward-looking" me asuring system, op erating based on the time-of-flight method. It measures the di stance from the reference point (process connection) to the product surface.
Appendix Radar Tank Gauge 98 Installation and Operations Manual Output The 7500 RTG is commissi oned by entering an empty di stance E (=zero), a full distance F (=span), and an application parameter. The application parameter automatically adapts the instrument to the measuring conditions.
99 7532 Appendix On-site operation: • with display and operating modul e VU 331, • with a Personal Computer, FXA 193 an d the operating software ToF Tool. The ToF Tool is a graphical operating softwa re for instruments from Varec that operate based on the time-of-flight principle (r ad ar, ultrasonic, guided micro-impuls e).
Appendix Radar Tank Gauge 100 Installation and Operations Manual 1 1.4.3 Custody tr ansfer mode 7500 RTG is a weight and measure a pproved le vel transmitter.
101 7532 Appendix 1 1.4.5 Particularities in "approved" operation The 7500 RTG level radar is set to custody transfer mode after commissioning usi ng a custody locking switch (see page 36). The po sition of the custody locking switch is secured and sealed using the sealing pi n.
Appendix Radar Tank Gauge 102 Installation and Operations Manual 1 1.4.7 Integrated on t ank gauging system The Varec Tank Side Monitor 4590 provides integrated communications for sites with multiple .
Radar Tank Gauge Index IOM027FVAE0804 103 Index A Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Antenna extension . . . . . . . . . . . . . . . . .
Radar Tank Gauge 104 Installation and Operations Manual P Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Phase evaluation . . . . . . . . . . . . . . . . . . 51, 57, 60 Pipe diam. corr . . . . . . . . . . . . . . . . . . . . . .
7532 IOM027FVAE0804 105 Notes.
Radar Tank Gauge Varec, Inc. 5834 Peachtree Corners East, Norcross (Atlant a), GA 30092 USA Tel: +1 (770) 447-9202 Fax: +1 (770) 662-8939 Your offical representative www.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Lightning Audio 7532 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Lightning Audio 7532 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Lightning Audio 7532, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Lightning Audio 7532 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Lightning Audio 7532, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Lightning Audio 7532.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Lightning Audio 7532. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Lightning Audio 7532 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
