Benutzeranleitung / Produktwartung STT 500 des Produzenten Sterling
Zur Seite of 87
Op er ating In struc tions De hu mid ified Air Dryer STT 500 with Siemens S7 con trol unit 0 2 6 - 2 M S Ster ling Ma te rial Pro cess ing.
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Tech ni cal ser vice: Ser vice de part ment Tele phone: (800) 423-3183 Edi tion: 04/02 Or der con fir ma tion num ber: _ _ _ _ _ _ _ _ _ _ _ 0 2 6 - 2 M S STT 500 2 Ster ling Ma te rial Pro cess ing 5200 West Cinton Ave. Mil wau kee, WI 53223 Tele phone: (414) 354-0970 Fax: (414) 354-6421 www.
Ster ling Ma te rial Pro cess ing re tains all rights to change the in for ma tion in these op er at ing in struc tions at any time with out no tice. We as sume no li a bil ity for any er rors or di rect or in di rect dam age re sult ing in con - text with these op er at ing in struc t ions.
TA BLE OF CON TENTS 1. Gen eral In for ma tion ............................................... 1-1 1.1. Warn ings and sym bols ............................................. 1-2 1.2. Ex pla na tions and in for ma tion ..................................
5. Main te nance ..................................................... 5-1 5.1. Main te nance in ter vals ............................................. 5-3 5.2. Cleaning/re new ing the air fil ters ..................................... 5-4 5.3. Ten sioning the V-belts .
11. Elec tri cal man ual ............................................... 11-1 o Con nec tion di a gram no.: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ o Cur rently not avail able; will be de liv ered at a later date! 12. Ac ces so ries ..........................
1. Ge ne ral In for ma ti on » The se ope ra ting in struc tions are ad dres sed to all users of the de vi ce. The se ope ra ting in struc tions must be used by every per son char ged with work on the unit.
1.1. War nings and sym bols The fol lo wing war nings and sym bols are used in the se ope ra ting in struc tions: » This sym bol in di ca tes dan ger to life! Fa tal or se ri ous in ju ry is pos si ble if the cor re spon ding in struc tions, re gu la tions or war nings are not ob ser ved.
1.2. Ex pla na tions and in for ma ti on Va ri ous terms and de sig na tions are used in the se ope ra ting in struc tions to en su re cla ri ty. The re - fo re plea se note that the terms used in the text stand for t he cor re spon ding ex pla na tions lis ted be - low.
2. Sa fe ty in struc tions » The se sa fe ty in struc tions ap ply to all per sons wit hin the ran ge of ac ti on of the equip ment. Plea se in form all per sons wit hin the ran ge of ac ti on of the equip ment of the di rect and in di rect ha zards con nec ted with the equip ment.
2.1. For your sa fe ty Ge ne ral The ope ra ting per son nel of this equip ment must be at least 16 ye ars old. Plea se read the se ope ra ting in struc tions ca re ful ly be fo re ta king into ope ra ti on for the first time. Con tact us should que stions ari se.
As sem bly Com pa re the con nec ted lo ads with tho se of the mains supp ly. Dan ger of in ju ry through elec tri cal shock! When using lif ting gear, plea se ob ser ve the per tai ning re gu la tions.
When dry ing plas tics which emit ga ses dan ge rous for hu man he alth, take care that the re ge ne ra - ti on ex haust air is dis po sed of wit hout pol lu ting the en vi ron ment. This will pre vent dan ger to peo - ple and ma te ri al! Main ten an ce Be fo re star ting main ten an ce work, ap point a su per vi sor.
2.2. For the sa fe ty of the de vi ces Ne ver chan ge set tings wit hout ca re ful ly as ses sing the con se quen ces. Use only ori gi nal Ster ling spa re parts. Ob ser ve the main ten an ce in struc tions. Keep a re cord of all main ten an ce works and re pairs.
3. Start-up » This chap ter is di rec ted at the ope ra tors of the equip ment. This chap ter as su mes ge ne ral skills in dea ling with dry ing sys tems and SPS (PLC) con trol units. This chap ter as su mes that the functio nal des crip ti on has been read and un - ders tood.
3.1. Control system The control system is switched on at the main switch. The control system is operated via a ”selection window” and the keyboard of the operator panel.
3.1.2. Flow chart 1 Indicator lamp 2 Valve system 3 Drying chamber 4 Drying blower 5 Return air filter 6 Drying hopper 7 Drying heater 8 Regeneration heater 9 Regeneration blower 10 Regeneration air f.
3.2. Switchi ng on the dryer Switch on the system by means of the main switch. & The control system carries through a self-test; after that , the name of the dryer and the operation status of the unit are display ed. F Unblock the control system: Keep the ACK key pressed until the LEDs of the keys K1 - K4 li ght up.
3.3. Vie wing the soft wa re-ver si on Press the “±” -key. & The soft wa re-ver si on will be dis play ed. 3.4. Passwords The entry of a password prevents unauthorised persons from having access to the data entered into the control system. Important data can t hen be entered or modified only after the password has been entered.
Login Press the key “F2" . En ter the pass word. Press the ENTER key. & If the pass word has been en tered cor rectly, the cor re spond ing pass word level is dis played. You can now en ter data into the con trol sys tem or mod ify data which have al ready been en tered.
3.5. Basic parameters Press the ”F1"-key. 3.5.1. Turning the devices on/off Select ” Main menu ”. Acknowledge with the ENTER-key. or Press the ”F2” -key. Dryer on/off ”on” = turn dryer on, ”off” = turn dryer off. Acknowledge with the ENTER-key.
Hop per X on/off (X = num ber of the dry ing hop per) “on” = re lea sing dry ing hop per X, “off” = bloc king dry ing hop per X Ack nowled ge with the EN TER-key. Hop per hea ter X on/off (X = num ber of the hop per hea ter) “on” = switch on hop per hea ter X, “off” = switch off hop per hea ter X Ack nowled ge with the EN TER-key.
3.5.2. Entering dryer values Select ”Dryer” . Acknowledge with the ENTER-key. or Press the ”F3” -key. Regeneration Heater Act. The regenerated heat temperature will be displayed. Used air Act. The current temperature of the used air will be displayed.
& If the unit ope ra tes with a re turn air coo ler (op tio nal): Re turn air cooler Tar get En ter the max. per mis si ble re turn air tem per a ture (65 °C max.) (149°. F) Higher tem per a tures are not al lowed. Ac knowl edge with the EN TER-key.
3.5.3. Entering hopper values Select ”Hopper” . Acknowledge with the ENTER-key. or Press the ”F4” -key. Hopper entry X Target (X = number of the drying hopper) Enter the drying temperature for hopper flap X (when operating with supplement ary heating).
& If the unit op er ates with mo tor flaps (op tional): Gran ules X tar get: _ % = _ °C (F°) (X = num ber of the dry ing hop per) En ter the ma te rial tem per a ture at which the flap (op tional) on the dry ing hop per X should close. Con firm with the EN TER key.
3.5.4. Observing processing status Select ”Status” . Acknowledge with the ENTER-key. or Press the ”K1” -key. & The current operation status of individual assembly parts is displayed: e.g.: valve block mov ed in/mov ed out/error “moved in” = The upper drying cells are within the drying circuit; the lower ones are regenerated.
3.5.5. Setting date and time & This function is password protected. Press the “K3" -key. Enter the password if requested. Date Press the SHIFT key. By means of the arrow keys, select the desired week-day. By means of the arrow keys, select the shown date.
3.5.6. Viewing/changi ng language and contrast & This function is password protected. Press the “K4" -key. Enter the password if requested. Contrast Press the SHIFT key. By means of the arrow keys, select the adjustment which suits you best.
3.5.7. Changing parameters Select ”Parameters” . Acknowledge with the ENTER-key. or Press the SHIFT -key and the ”K1” -key. Run on time dry ing blow er -- 300 sec. Stan dard set ting: 300 sec onds, changes only af ter con tact ing Ster ling Ser vice.
3.5.8. Setting the timer Select ”Time r” . Acknowledge with the ENTER-key. or Press the SHIFT -key and the ”F1” -key. XX ON 00:00 OFF 00:00 (XX = day Mo-Su) Enter for each day the switching on time and the switching off t ime. Acknowledge with the ENTER-key.
3.6. Starting continuous operation When you have carried through all basic settings, you can start with continuous operation. F Make sure that hoppers which are not in use are separated from the dehumidified air supply. Make sure that the set drying temperatures are suited for the materials in the hoppers.
3.7. Viewing system runtime Select ”System runtime” . Acknowledge with the ENTER-key. or Press the SHIFT -key and the ”F2” -key. Sys tem runtime PLC X.XX h r.-blw r. X,XX h m.-blw r. X.XX h & The runtime of the blowers and the PLC (SPS) is shown in hours.
3.8. Switchi ng the dryer off Select ”Main menu”. Acknowledge with the ENTER-key. or Press the ”F2” -key. Select ” Dryer off ”. Ack nowled ge with the ENTER-key. L Wait until the regeneration phase is finished and the blower has come to a standstill.
4. Er ror and er ror cor rec ti on » This chap ter is di rec ted at the ope ra tors of the equip ment. This chap ter as su mes ge ne ral skills in dea ling with dry ing sys tems and SPS (PLC) con trol units. This chap ter as su mes that the “start-up” des crip ti on has been read and un - ders tood.
& Alarm mes sages are dis played in plain lan guage on the screen of the op - er a tor de vice. The dis play of alarm mes sages in the op er a tor de vice can only be erased by press ing the ”ACK” key. The fail ure is not re paired. A fail ure is given by flash ing of the LED “alarm”.
View Press the ”F2" -key. All alarm mes sa ges with their num bers (see Texts), date, time and the supp le ment ”K”, ”G”, or ”Q” are dis play ed. & ”K” = co ming (a fai lu re oc cu red) Pres sing the “ à ”-key dis plays the alarm mes sa ge in plain text.
Num ber Press the ”F2" -key. To tal mes sa ges The num ber of all alarm mes sa ges is dis play ed. Wai ting mes sa ges The num ber of cur rent alarm mes sa ges is dis play ed. Press the ESC-k ey. De le te Press the ”F3" -key. & This functi on is pass word pro tec ted (Ster ling ser vi ce).
Over flow Press the ”F2" -key. & If the re are more cur rent alarm mes sa ges than can be sa ved, a war ning mes sa ge (= re si du al buf fer rea ched) may be gi ven. This functi on is pass word pro tec ted (Ster ling ser vi ce). Over flow w ar ning On/Off Press the SHIFT-key.
Text Press the ”F3" -key. All pos si ble alarm mes sa ges are dis play ed with their num bers (see Vie wing). For vie w ing the pos si ble alarm mes sa ges, press the ar row keys: PLC (= SPS) Bat te ry is Emp ty Re pla ce the SPS bat te ry. Main Sw itch is Off The main switch has been pla ced in the off po si ti on.
Check the blo wer. Va cu um sen sor de fec ti ve. Tem pe ra tu re Mea su re ment Re ge ne ra ti on Hea ter De fec ti ve Check the ca bles and the sen sor. Check the po wer supp ly. Short cir cuit check. Ex cess Tem pe ra tu re Re ge ne ra ti on Hea ter The re ge ne ra ti on tem pe ra tu re is too high.
Tem pe ra tu re Mea su re ment Dry ing Hea ter De fec ti ve Check ca bles and sen sor. Check the po wer supp ly. Short cir cuit check. Ex cess Tem pe ra tu re Dry ing Hea ter The dry ing tem pe ra tu re is too high. Check the sa fe ty tem pe ra tu re li mi ter.
Tem pe ra tu re Mea su re ment Gra nu les De fec ti ve Hop per X (X = num ber of the dry ing hop per) Check ca bles and sen sor. Check the po wer supp ly. Short cir cuit check. Ex cess Tem pe ra tu re Gra nu les Hop per X (X = num ber of the dry ing hop per) The ma te ri al tem pe ra tu re is too high.
5. Main ten an ce » This chap ter is in ten ded for per sons with skills in elec tri cal and me cha ni cal are as due to their trai ning, ex pe rien ce and re cei ved in struc tions.
F Plea se ob ser ve the main ten an ce sche du le. Be fo re star ting main ten an ce work, cle an the equip ment of oil, fuel or lu - bri cants. En su re that ma te ri als and in ci den tals re qui red for ope ra ti on as well as spa re parts are dis po sed of pro per ly and in an en vi ron men tal ly sound man ner.
5.1. Main ten an ce in ter val s Dai ly: Check war ning signs on equip ment for good le gi bi li ty and com ple te ness Cle an re turn air fil ter and hou sing (de pen ding on amount of dust col lec t.
5.2. Clea ning/re ne w ing the air fil ters Press the ”F2” -key. Se lect ” Dry er off ”. Ack nowled ge with the EN TER-key. L Wait un til the blo wers have stop ped tur ning. Switch off the dry er at the main switch. Dis con nect the po wer supp ly.
Re turn air fil ter Loo sen the se cu ring nut on the re turn air fil ter hou sing and re mo ve the hou sing lid. Re mo ve the re turn air fil ter. Cle an the re turn air fil ter with com pres sed air from in - si de to out or re new the fil ter. Ne ver knock the re turn air fil ter on the floor.
Re ge ne ra ti on air fil ter Loo sen the se cu ring nut on lid of the re ge ne ra ti on air fil ter. Re mo ve the lid and re ge ne ra ti on air fil ter hou sing.
Fil ter of the elec tri cal ca bi net Re mo ve the lid of the fil ter. Re mo ve the fil ter mat. Blow through the fil ter mat with com pres sed air from in si de to out si de or re new the fil ter mat. Cle an the fil ter hou sing. Use lint-free clea ning rags.
5.3. Ten sio ning the V-belts Press the ”F2” -key. Se lect ” Dry er off ”. Ack nowled ge with the EN TER-key. L Wait un til the blo wers have stop ped tur ning.
Blo w er ”re ge ne ra ti on hea ter” / Blo w er ”dry ing hea ter” Re mo ve the pro tec ti ve grid of the blo wer (po si ti on 3). Loo sen the nut (po si ti on 1). Loo sen and re mo ve the screw (po si ti on 2). Sli de mo tor with car rier flan ge pla te (po si ti on 6) to wards the car rier flan ge hou sing (po si ti on 4).
High-pres su re blo wers w ith fre quency con ver ter ope ra ti on F Blo wers work wit hout V-belts! 5.4. Dis po sing of the dry ing agent En su re that dry ing cells are ex chan ged by Ster ling or re fil led only when emp ty. Dry ing agents must be dis po sed of in ac cor dan ce with all of fi ci al re gu la - tions.
5.6. Chan ging the bat te ry of the con trol sys tem » This work may be car ried through only by qua li fied per son nel trai ned in the field of elec tri cal en gi nee ring. F The bat te ry may be chan ged only with the con trol sys tem swit ched on.
L Sto re ba ckup bat te ries in a dry and cool pla ce. Ba ckup bat te ries can be sto red for ap prox. 5 ye ars. If ba ckup bat te ries are not trea ted pro per ly, they can ig ni te, ex plo de and cau se se ve re bur ning.
5.6.1. Re set ting the con trol va lu es » This elec tri cal work is in ten ded to be car ried out only by trai ned per son nel. & Af ter chan ging the bat te ry or the PLC the con trol va lu es should be re set - ted. All con trol va lu es are set back to the stan dard set tings.
6. Functio nal des crip ti on » This functio nal des crip ti on is in ten ded for all ope ra ting per son nel of the equip ment. Pre re qui si te for this functio nal des crip ti on is ge ne ral knowled ge of dry ers and SPS (PLC) s ys tems. En su re in each case that the ope ra ting per son nel are suf fi cient ly in form ed.
6.1. Dry er The dry er ope ra tes with de hu mi di fied air, i.e. the air is not only hea ted but also de hu mi di fied be fo - re flo wing into the dry ing hop per. This prin ci ple al lows plas tic gra nu les to be dried to a re si du al moi stu re con tent as low as 0.
6.2. Dry ing hop per (op ti o nal) The ma te ri al is dried in the dry ing hop per. The de hu mi di fied air is for ced through the ma te ri al in the hop per, col lec ting moi stu re in the pro cess. The dry ing hop per must be di men sio ned ac cor - ding to its in ten ded use to en su re that the fi nal moi stu re con tent is at tai ned.
6.3. Re turn air coo ler F A re turn air cooler is gen er ally re quired in cases in which the re turn air tem per a ture is over 65 °C (149° F). A re turn air coo ler im pro ves the ef fi cien cy of the dry ing cells. The re turn air coo ler re du ces the re turn air tem pe ra tu re to a de fi ned va lue.
6.4. Hop per hea ters (op tio nal) If dif fe ring dry ing tem pe ra tu res are re qui red in the dif fe rent dry ing hop pers, hop per hea ters must be in stal led on the dry ing hop pers. The dry ing tem pe ra tu re of each dry ing hop per can be set cen - tral ly at the dry er.
7. Trans port, As sem bly and Sto ra ge » This chap ter is in ten ded for all ope ra ting per son nel of the equip ment. Per son nel using the se in struc tions must be in struc ted in the re gu la tions for the pre ven ti on of ac ci dents, the ope ra ting con di tions and sa fe ty re gu la tions and their im ple men ta ti on.
7.1. Trans port and Pac king » Plea se en su re ade qua te car ry ing ca pa ci ty of the lif ting equip ment. Note that the dry er sys tem is top-he avy. Risc of topp ling! The equip ment pass a ri go rous ope ra ting test in the fac to ry and are pa cked ca re ful ly to avoid trans port da ma ge.
w ith a work shop cra ne Check if the eye lets are in stal led on the dry er hou sing. If this con di ti on is met, fas ten the trans port ca bles to the eye lets. If this con di ti on is not met, mount the eye lets and then fas ten the trans port ca bles to the eye lets.
7.2. As sem bly » Plea se en su re ade qua te car ry ing ca pa ci ty of the lif ting equip ment. Check the car ry ing ca pa ci ty of the point of in stal la ti on, par ti cu lar ly if in stal led on a plat form. The pla ce se lec ted for in stal la ti on should be as free of vi brat ions as pos si ble.
8. As sem bly in struc tions » These in stal la tion in struc tions are in tended for per sons with skills in elec tri - cal and me chan i cal ar eas due to their train ing, ex pe ri ence and re ceived in - struc tions.
8.1. Moun ting of the suc ti on de vi ce for re ge ne ra ti on ex haust air When plas tics are dried which pro du ce ha zar dous ga ses, en vi ron men tal ly sound dis po sal of the re ge ne ra ti on ex haust air must be pro vi ded. The throughput of the re ge ne ra ti on blo wer may not be chan ged.
8.3. Elec tri cal con nec ti on » Ob ser ve the ru les of the lo cal elec tri ci ty board. Check that the supp ly vol ta ge and the po wer fre quen cy are in ac cor dan ce with the data on the name pla te of the de vi ce.
9. Tech ni cal Data Ba sic Equip ment · Cen tral ly mo ni to red PLC S7 dry ing con trol sys tem with ope ra tor pa nel OP 7 · Cen tral tem pe ra tu re con trols for all hea ting ele ments to en su .
0 2 6 - 2 M S STT 500 Tech ni cal Data 9 - 2 All di men sions are in mm.(in.) Sub ject to al te ra ti on..
Di men si on sheet 0 2 6 - 2 M S STT 500 Tech ni cal Data 9 - 3.
10. Spa re parts list » This spa re parts list is in ten ded to be used only by trai ned per son nel. Ot her per sons are not per mit ted to mo di fy or re pair the equip ment.
Pos. ID-num ber Des crip ti on 1 95828 Tu bu lar heat ing el e ment 230 V, 3 kW (dry ing, op tional) 93795 Tu bu lar heat ing el e ment 230 V, 2450 W (dry ing, op tional) 85276 Tem per a ture lim iter.
Pos. ID-num ber Des crip ti on 5 97762 Si li con hose 95819 Pull-but ton 9 85266 Field switch 10 84157 Fil ter unit com ple te 87491 Spa re fil ter mat 11 84494 High-pres su re blo wer HRD 2/5T, 3,3 k.
Pos. ID-num ber Des crip ti on 16 83986 Moi stu re sen sor 0 2 6 - 2 M S STT 500 Spa re parts list 10 - 4 16 16.
Ac ces so ries 85241 Di gi tal ti mer (ex tern, op tio nal) 86371 Mul ti plier Pt 100 (3 m) (9.84 ft) 89846 Mul ti plier Pt 100 (6 m) (19.79 ft) 93303 Mul ti plier Pt 100 (9 m) (29.53 ft) 86387 Mul ti plier Pt PT 100 (12 m) ( 39.47 ft) 83015 Mul ti plier Pt 100 (15 m) (49.
11. E lec tri cal ma nu al » This electrical manual is intended to be used only by Ster ling service personnel and trained personnel authorized by Ster ling. Other persons are not permitted to modify or repair the equipment. ¨ Con nec ti on dia gram no.
12. Ac ces so ries Ver si on: 64.10-0134GB01 10/97 ¨ En te ring va lu es on the OP 7 / 17 ¨ Flap con trol with Fuz zy-Lo gic ¨ Elek tror High-pres su re blo wer with fre quen cy con ver ter ope ra .
Ac ces so ries En te ring va lu es on the OP 7 / 17 Ster ling Ma te rial Pro cess ing B G 1 0 / 2 0.
1 OP7, OP17 09/96 3.3 Entering V alues In input fields, values can be entered on the OP and transferred to the PLC. T o do this, proceed as follows: S tep Procedure 1 Branch initially to the screen you require and then to the corresponding screen entry .
2 OP7, OP17 09/96 3.3.1 Entering Nume rical V alues In fields that allow the operator to enter a numerical value, you enter the nu- merical value character by character using the keypad on the system key- board. If there is a value in the field already , it is cleared completely from the field when the first character is entered.
3 OP7, OP17 09/96 3.3.2 Entering Alph an umeric V alues W ith the input of alphanumeric values, digits and letters are mixed. For the numerical components of the input, proceed as described in section 3.3.1. If, however , you wish to enter a letter at the current cursor position, you must enable the corresponding alphanumeric font.
4 OP7, OP17 09/96 If the characters available on the keypad are not sufficient for the alphanu- meric input, you can select additional letters and special characters from the extended character set. The extended character set is available for all KC type fields.
5 OP7, OP17 09/96 3.3.3 Entering Sym bolic V alues When you enter a symbolic value, text is displayed instead of the value. If a field has to be filled by entering symbolic values, take the value from a list of options. T o do so, proceed as follows: S tep Procedure 1 In the input field press Shift LED is on.
Acces so ries Flap con trol with Fuzzy-Lo gic Ster ling Ma te rial Pro cess ing B G 0 0 / 0 1.
F Obser ve that the hop per is not swit ched off af ter the flap has clo sed. Tur ning hop per off: see chap ter “start-up, tur ning the de vi ces on/off ”.
Ein wichtiger Punkt beim Kauf des Geräts Sterling STT 500 (oder sogar vor seinem Kauf) ist das durchlesen seiner Bedienungsanleitung. Dies sollten wir wegen ein paar einfacher Gründe machen:
Wenn Sie Sterling STT 500 noch nicht gekauft haben, ist jetzt ein guter Moment, um sich mit den grundliegenden Daten des Produkts bekannt zu machen. Schauen Sie zuerst die ersten Seiten der Anleitung durch, die Sie oben finden. Dort finden Sie die wichtigsten technischen Daten für Sterling STT 500 - auf diese Weise prüfen Sie, ob das Gerät Ihren Wünschen entspricht. Wenn Sie tiefer in die Benutzeranleitung von Sterling STT 500 reinschauen, lernen Sie alle zugänglichen Produktfunktionen kennen, sowie erhalten Informationen über die Nutzung. Die Informationen, die Sie über Sterling STT 500 erhalten, werden Ihnen bestimmt bei der Kaufentscheidung helfen.
Wenn Sie aber schon Sterling STT 500 besitzen, und noch keine Gelegenheit dazu hatten, die Bedienungsanleitung zu lesen, sollten Sie es aufgrund der oben beschriebenen Gründe machen. Sie erfahren dann, ob Sie die zugänglichen Funktionen richtig genutzt haben, aber auch, ob Sie keine Fehler begangen haben, die den Nutzungszeitraum von Sterling STT 500 verkürzen könnten.
Jedoch ist die eine der wichtigsten Rollen, die eine Bedienungsanleitung für den Nutzer spielt, die Hilfe bei der Lösung von Problemen mit Sterling STT 500. Sie finden dort fast immer Troubleshooting, also die am häufigsten auftauchenden Störungen und Mängel bei Sterling STT 500 gemeinsam mit Hinweisen bezüglich der Arten ihrer Lösung. Sogar wenn es Ihnen nicht gelingen sollte das Problem alleine zu bewältigen, die Anleitung zeigt Ihnen die weitere Vorgehensweise – den Kontakt zur Kundenberatung oder dem naheliegenden Service.
