Manuel d'utilisation / d'entretien du produit 551C du fabricant Bryant
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1 Installation Instructions 551B 036- - 072 551C 024- - 060 SINGLE - - P ACKAGE RO OFTOP ELECTRIC COOLING UNITS WITH OP TIONAL ELECTRIC H EA T T ABLE OF CO NTENTS Page SAFETY CONSIDERA TI ONS 1 ........................ INST ALLA TION 1 ...............
2 Ste p 1 —Pr o vide Unit Suppor t Roof Curb Assem ble an d in stall accesso ry roo f cu rb in acco rdan ce with ins tr uct ions s hippe d wit h c urb. (Se e Fi g. 2.) I nst al l ins ula ti on, ca nt s tr ips , r oofi ng fe lt , a nd count er f la shi ng as s hown.
3 ROOF CURB ACCESSO RY A UNIT SIZE CRRFCURB001A01 1 ˝ -2 ˝ [356] CRRFCURB002A01 2 ˝ -0 ˝ [610] NO TES: 1. Roof cu rb accessor y is sh ipped disasse mbled. 2. Insula ted panels. 3. Dimensions in [ ] are in millimeters. 4. Ro of curb: g alvanized stee l.
4 MAXIMUM ALLO W ABLE DIFFERENCE (in.) A-B B-C A -C 0.5 1.0 1.0 C061 10 Fig. 3 --- Unit L ev eling T olera nces DRAIN PLUG CONDENSA TE P AN (SIDE VIEW) HORIZONT AL DRAIN OUTLET NO TE: D rain plug is shown in factory-installed posit ion.
5 NOTE S : 1. Pl ace u nit on cu r b as close as possibl e to the du ct en d. 2 . D i m e n s i o ni n( )i si nm i l l i m e t e r s . 3. H ook rig gi ng shack les throug h holes in bas e rail as show n in detai l “ A. ” Holes i n base rai ls are cente red around the unit c enter of gravi ty .
6 CONTROL BOX P ANEL CONTROL BOX P ANEL COMPRESSOR COMPRESSOR ACCESS ACCESS P ANEL P ANEL C06375 Fig. 8 --- 551B 036 - -072 Base Uni t Dime nsi ons 551B,C.
7 CONTROL BOX P ANEL COMPRESSOR ACCESS P ANEL C06376 Fig. 9 --- 551C 024 - -060 Base Uni t Dime nsi ons 551B,C.
8 Ste p 5 — Ma ke E lectri cal C on necti on s ELECTRICAL SHOCK HAZARD Fai lur e to fol low thi s wa rni ng coul d re sul t in pe rs onal inj ury or dea th. Unit c a bine t must ha ve a n unint er rupt ed, unbr oken el ec tr ic a l ground to minim iz e the pos si b ility of p erson al inj ury i f a n el ec tr ic al faul t s hould occ ur .
9 T able 1—Phys ic al Data 551B BASE U NIT 551B 036 048 060 072 NOMI NAL C A P AC IT Y (no mi nal to ns ) 3 4 5 6 OPERA TING WEIGHT (lb) Unit 435 445 465 540 Perf ect H u midit y Ada pti ve D eh.
10 T able 2—Phys ic al Data 551C BASE U NIT 551C 024 036 048 060 NOMI NAL C A P AC IT Y (no mi nal to ns ) 2 3 4 5 OPERA TING WEIGHT (lb) Unit 435 445 465 635 Perf ect H u midit y Ada pti ve D e.
11 LEGEND C— Contactor COMP — Compressor IFC — Indoor (Evaporator) F an Contactor NEC — National Electrical Code TB — T er minal Block 208/230-1-60 575-3-60 (SIZES 060 AND 072) 208/230-3-60 (SIZES 036 AND 048) 208/230-3-60 460-3-60 (SIZES 060 AND 072) 575-3-60 (SIZES 036 AND 048) 460-3-60 (SIZES 036 A ND 048) C06158 Fig.
12 T able 3—El ec tr ic al Data- - 551C VOLT AGE RAN GE COMPRESSOR ( each) OUTDOOR F AN ELECT RI C HEAT POWER SUPPL Y * DISCONNECT SIZ E UNIT SI ZE Nom inal V --- P h --- H z IFM TYPE CONV OUTLET Min Max QT Y RLA LRA QTY FLA IFM FLA CRHEA T ER --- --- --- A 0 0 or B00 Actual kW† FLA MCA MOCP ** FL A LRA NONE —/ — —/— 16.
13 T able 3 — Ele ct ri cal Dat a - - 551C (cont ) VOLT AGE RAN GE COMPRESSOR ( each) OUTDOOR F AN ELECT RI C HEAT POWER SUPPL Y * DISCONNECT SIZ E UNIT SI ZE Nom inal V --- P h --- H z IFM TYPE CONV OUTLET Min Max QT Y RLA LRA QTY FLA IFM FLA CRHEA T ER --- --- --- A 0 0 or B00 Actual kW† FLA MCA MOCP ** FL A LRA NONE — — 9.
14 T able 3 — Ele ct ri cal Dat a - - 551C (cont ) U N I T N O M I N A L I F M C O N V VOL T AGE RANGE COMPRE SSOR (ea ch) OUTDOOR F AN I F M ELEC TR IC H EAT POWE R SUPPL Y DISCONNECT SIZ E UNIT SI.
15 T able 3 — Ele ct ri cal Dat a - - 551C (cont ) U N I T N O M I N A L I F M C O N V VOL T AGE RANGE COMPRE SSOR (ea ch) OUTDOOR F AN I F M ELEC TR IC H EAT POW ER SUPPL Y DISCONNECT SIZ E UNIT SI.
16 T able 3 — Ele ct ri cal Dat a - - 551C (cont ) U N I T N O M I N A L I F M C O N V VOL T AGE RANGE COMPRE SSOR (ea ch) OUTDOOR F AN I F M ELEC TR IC H EAT POW ER SUPPL Y DISCONNECT SIZ E UNIT SI.
17 T able 4—El ec tr ic al Data- - 551B U N I T N O M I N A L C O N V VOL T AGE RANGE COMPRE SSOR (ea ch) OUTDOOR F AN I F M ELEC TR IC H EAT POWE R SUPPL Y * DISCONNECT SIZ E UNIT SIZE NOMINA L V -.
18 T able 4 — Ele ct ri cal Dat a - - 551B (cont ) U N I T N O M I N A L C O N V VOL T AGE RANGE COMPRE SSOR (ea ch) OUTDOOR F AN I F M ELEC TR IC H EAT POWE R SUPPL Y * DISCONNECT SIZ E UNIT SIZE N.
19 T able 4 — Ele ct ri cal Dat a - - 551B (cont ) VOLT AGE RAN GE COMPRESSOR ( EACH) OUTDOOR F AN ELEC TR IC H EAT POW ER SUPPL Y DISCONNECT SIZ E UNIT SIZE NOMINA L V --- P H --- H z IFM TYPE CONV OUTLET Min Max QT Y RLA LRA QTY FLA IFM FLA CRHEA T ER --- --- A 0 0 o r B00 Actual kW { FL A MCA MOCP** FL A LRA — —/— —/— 35.
20 T able 4 — Ele ct ri cal Dat a - - 551B (cont ) VOLT AGE RAN GE COMPRESSOR ( EACH) OUTDOOR F AN ELEC TR IC H EAT POW ER SUPPL Y DISCONNECT SIZ E UNIT SIZE NOMINA L V --- P H --- H z IFM TYPE CONV OUTLET Min Max QT Y RLA LRA QTY FLA IFM FLA CRHEA T ER --- --- A 0 0 o r B00 Actual kW { FL A MCA MOCP** FL A LRA — —/— —/— 46.
21 T able 4 — Ele ct ri cal Dat a - - 551B (cont ) U N I T VOL T AGE RANGE COMPRE SSOR (ea ch) OUT DOOR F AN I F M ELEC TR IC H EAT POWE R SUPPL Y * DISCONNECT SIZ E UNIT SIZE NOMINA L V --- P H ---.
22 Ste p 6 — Adjust Factory- Installed Op tions Perfect H um id ity Adapt ive Dehu mid ifica tion Syst em Perfect Hu mid ity sy stem op eratio n can b e contro lled b y field ins ta ll at ion of a Brya nt- - appr oved humi dist at . ( See Fi g. 13.
23 CB — Circuit Breaker CR — Cooling Relay DHR — Dehumidify Relay DSV — Discharge Solenoid V alv e HR — Heater Relay LPS — Low Pressure Switch LSV — Liquid So lenoid Valv e LT L O — Low T em perature Lo ckout Fiel d Splice T er minal (Unmarke d) Splice F actory Wiring Field Control Wiring Field P o wer Wiring LEGEND C06128 Fig.
24 C06131 Fig. 19 --- Out door- - Air D amper W i th Hood Attac hed C06132 Fig. 20 --- Out door- - Air Dam per Pos it ion Set ti ng ECONOMI$ER IV CONTROLLER OUTSIDE AIR TEMPERA TURE SENSOR LOW AMBIENT SENSOR A CTUA TOR WIRING HARNESS C06021 Fig. 21 --- Ec onoMi$e r IV Compone nt Locat ions Opti onal EconoM i$er IV See F ig.
25 H o o d B o x HOOD BOX BRACKET C06024 Fig. 23 --- Hood Box R emoval SIDE P ANEL INDOOR COIL ACCESS P ANEL INDOOR COIL ACCESS P ANEL CAULK HERE TOP SIDE P ANEL C06025 Fig. 24 --- Indo o r Co il A ccess Pa n el Relo ca tion B TOP P ANEL INDOOR COIL ACCESS P ANEL 19 1/16” SCREW HOOD DIVIDER LEFT HOOD SIDE 33 3/8” C06026 Fig.
26 EconoM i$er I V Contr ol Modes De te rmi ne the Ec onoMi$e r IV contr ol mode be for e se t up of the cont rol . Some modes of opera ti on may requi re di f fe re nt se nsor s . (Se e T a ble 6. ) The EconoM i$e r IV is s uppli ed from the fa ct ory w it h a s upply- - air te mper at ure se nsor and an outdoor- - ai r te mpe ra tur e se nsor .
27 Out door Enthal py Changeove r Fo r enth alpy co n tro l, accessory en thalp y sen sor (part nu m ber HH57AC078) i s r equi re d. Repl ac e t he st anda rd out door dry bulb temp eratu re senso r w ith th e accesso ry en thalp y sen so r in the sam e mount ing loca ti on.
28 C06034 Fig. 33 --- Ec onoMi$e r IV Cont r oll er Pot ent iome te r and LED Locat ions Repl ac e the s ta ndar d outsi de ai r dry bulb te mper at ure s ens or wit h the accessory en th alp y senso r in the same m ounti ng loc at ion. (Se e Fig. 21.
29 LED ON LED ON LED ON LED ON LED OFF 19 18 LED OFF LED OFF LED OFF 17 16 15 14 13 12 11 10 9 40 45 50 55 60 65 70 75 80 85 90 95 100 DEGREES F AHRENHEIT mA D C B A C06035 Fig. 34 --- Outsid e Air T emp era ture Change over Se t Point s ECONOMI$ER IV ECONOMI$ER IV CONTROLLER GROMMET RETURN AIR SENSOR RETURN DUCT (FIELD-PROVIDED) C06036 Fig.
30 A pr oporti onal a ntic ipa tor y st ra te gy shoul d be ta ken wit h the fol lowi ng condit ions: a z one wit h a lar ge ar ea , var ied oc cupanc y , and e quipme nt tha t ca nnot ex ceed the requ ired v en tilation rate at desig n co nd itio n s.
31 Deh um idifica tio n of Fresh Air with DC V Co n tr o l Info rm ation from A SH RA E in d icates that th e largest h u mid ity loa d on any zone is t he fr esh a ir i ntr oduce d.
32 6000 5000 4000 3000 2000 1000 0 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 DEL T A P IN. WG 4&5t o n 6 ton 3 ton C06133 Fig. 39 --- Perfect Hu mid ity t Adapti ve Dehum idif icat ion Syst em Stat ic Pr es sur e Dr op (in. wg) C06134 Fig. 40 --- Belt Driv e Mo tor Mo u ntin g C06041 Fig.
33 T able 10—Evapor ator -Fan Motor D ata — Standar d Motor UNI T 551B 551C UNI T PHASE MAXIMUM CON TINUO US BHP* MAXIMUM OP E R ATI NG WAT TS * UNI T VOL TAGE MAXIMUM AMP DRA W 024 ALL 0.58 580 2.0 75.0 Sing le 1.20 1000 208/230 4.9 0 3 6 208/230 4.
34 T able 14 — Evaporator -Fan Motor Ef fi ci enc y MOTOR 551B EFFI CIENCY 024, 036, 048 75 060 74/84* 072 84 *Single-phase/3- phase. NOTE : C onv ert wa tts to bh p using th e f oll owing f or mul a: watt s input x motor ef fici ency bhp = 746 GENERAL F AN P ERFO RMANCE NOTES 1.
35 T able 15—Fan Per for mance 551B 036, 551C 036 — V er tic al Dis char ge Units ; Standar d Motor (Belt D rive)* A I R F L O W EXT ER NAL STATIC PRE S SURE (in. wg AIRFL OW C F M 0.2 0. 4 0. 6 0.8 1. 0 C F M Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wa tts Rpm Bhp Watts 900 566 0.
36 T able 17—Fan Per for mance 551B 048, 551C 048 — V er tic al Dis char ge Units ; Standar d Motor (Belt D rive)* A I R F L O W EXT ER NAL STATIC PRE S SURE (in. wg) AIRFL OW C F M 0.2 0. 4 0. 6 0.8 1. 0 C F M Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wa tts Rpm Bhp Watts 1200 666 0.
37 T able 19—Fan Per for manc e 551B 060, 551C 060 Single -Phas e — V er tic al Dis char ge Unit s; Standar d Motor ( Bel t Dri ve) * A I R F L O W EXT ER NAL STATIC PRE S SURE (in. wg) AIRFL OW C F M 0.2 0. 4 0. 6 0.8 1. 0 C F M Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wa tts Rpm Bhp Watts 1500 790 0.
38 T able 20—Fan Per for mance 551B 060, 551C 060 Thre e-Phas e — V ert ic al Dis char ge Unit s; St andard Motor ( Belt Dr ive) * A I R F L O W EXT ER NAL STATIC PRE S SURE (in. wg) AIRFL OW C F M 0.2 0. 4 0. 6 0.8 1. 0 C F M Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wa tts Rpm Bhp Watts 1500 790 0.
39 T able 21—Fan Per for manc e 551B 060, 551C 060 — V er tic al Dis char ge Unit s; High- Stat ic Mot or (Belt D rive)* A I R F L O W EXT ER NAL STATIC PRE S SURE (in. wg) AIRFL OW C F M 0.2 0. 4 0. 6 0.8 1. 0 C F M Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wa tts Rpm Bhp Watts 1500 790 0.
40 T able 22—Fan Per for mance 551B 072 — V er tic al Dis char ge Unit s; St andard Motor ( Bel t Dri ve) * A I R F L O W EXT ER NAL STATIC PRE S SURE (in. wg) AIRFL OW C F M 0.2 0. 4 0. 6 0.8 1. 0 C F M Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wa tts Rpm Bhp Watts 1800 907 0.
41 T able 23—Fan Per for mance 551B 072 — V er tic al Dis char ge Unit s; Hi gh-St ati c Motor ( Bel t Dri ve) * A I R F L O W EXT ER NAL STATIC PRE S SURE (in. wg) AIRFL OW C F M 0.2 0. 4 0. 6 0.8 1. 0 C F M Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wa tts Rpm Bhp Watts 1800 907 0.
42 T able 25—Fan Per formanc e 551B 036, 551C 036 — Hori zont al Dis char ge Unit s; St andard Mot or (Belt D rive)* A I R F L O W EXT ER NAL STATIC PRE S SURE (in. wg) AIRFL OW C F M 0.2 0. 4 0. 6 0.8 1. 0 C F M Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wa tts Rpm Bhp Watts 900 554 0.
43 T able 27—Fan Per formanc e 551B 048, 551C 048 — Hori zont al Dis char ge Unit s; St andard Mot or (Belt D rive)* A I R F L O W EXT ER NAL STATIC PRE S SURE (in. wg) AIRFL OW C F M 0.2 0. 4 0. 6 0.8 1. 0 C F M Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wa tts Rpm Bhp Watts 1200 643 0.
44 T able 29—Fan Per formanc e 551B 060, 551C 060 Single -Phas e — Hori zont al Dis char ge Units ; Standar d Motor (Be lt Dr ive) * A I R F L O W EXT ER NAL STATIC PRE S SURE (in. wg) AIRFL OW C F M 0.2 0. 4 0. 6 0.8 1. 0 C F M Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wa tts Rpm Bhp Watts 1500 724 0.
45 T able 30—Fan Per for manc e 551B 060, 551C 060 Thr ee- Phase — Hor iz ontal Di sc harge Uni ts ; Standar d Motor (Be lt Dr ive) * A I R F L O W EXT ER NAL STATIC PRE S SURE (in. wg) AIRFL OW C F M 0.2 0. 4 0. 6 0.8 1. 0 C F M Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wa tts Rpm Bhp Watts 1500 724 0.
46 T able 31—Fan Per formanc e 551B 060, 551C 060 — Hori zont al Dis char ge Unit s; Hig h - - Sta tic Mo to r (Belt D rive)* A I R F L O W EXT ER NAL STATIC PRE S SURE (in. wg) AIRFL OW C F M 0.2 0. 4 0. 6 0.8 1. 0 C F M Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wa tts Rpm Bhp Watts 1500 724 0.
47 T able 33—Fan Per formanc e 551B 072 — Hori zont al Dis char ge Units ; High- Stat ic Mot or (Bel t Dri ve)* A I R F L O W EXT ER NAL STATIC PRE S SURE (in. wg) A I R F L O W C F M 0.2 0. 4 0. 6 0.8 1. 0 C F M Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wa tts Rpm Bhp Watts 1800 822 0.
48 PRE -ST AR T -UP FIRE, EXPLOSIO N, ELECTRIC AL SHOCK HA ZARD Fai lure t o fol low this wa rni ng coul d re sul t in pe rs onal inj ury , deat h, and/ or prope rty dam age . 1. Fol low r ecogni ze d saf et y prac ti ce s and we ar prot ec tive goggle s whe n che cking or s er vic ing a refrigeran t sy stem.
49 Cooling Set t he spa ce t her most at to the OFF posi ti on. Set the sys te m selector switch at CO OL p ositio n an d the fan switch at A UTO po sitio n. Ad ju st th e therm ostat to a settin g b elo w roo m te mpera ture . The compr es sor st ar ts when c onta ct or cl ose s.
50 The li quid ent er s the e vapor at or coi l at a t empe rat ure l ower t han in stand ard co olin g op eration . Th is lo wer temp erature in creases the l at ent c apa cit y of t he roof top unit. The re fr ige ra nt pa ss es thr ough the eva pora tor and i s t urne d int o a va por .
51 4. Clean co il u sin g a co mm ercial co il cleaner or dish w asher detergen t in a p ressurized spray can ister . W ash bo th sides of co il an d flu sh w ith clean water . F o r b est resu lts, back -flu sh to ward retu rn -air section t o rem o ve foreig n ma te ri al .
52 T able 34—Pe rf ec t Humidi ty Adapti ve Dehumi dif ic ati on Syste m Sequenc e of Oper ati on and Syst em Res ponse — Sin gle Compr es sor Unit ( 551C 024 - - 060, 551B 036 - - 072) THE RM OSTA T INPUT ECONOMIZ ER FU NCTION 551B, C UNIT O PERATI ON H Y1 Y2 OAT .
53 C06140 Fig. 50 --- Coo lin g Ch a rgin g Ch a rt, Standar d 551B 048 C06141 Fig. 51 --- Coo lin g Ch a rgin g Ch a rt, Standar d 551B 060 C06142 Fig.
54 C06144 Fig. 54 --- Cool ing Chargi ng Chart, 551B 048 wit h Opt ional Per fec t Humidi ty Adapti ve Deh um idifica tio n Sy stem NOTE : Whe n using t he c har ging cha rt s, it i s i mport ant t hat only the s ubcooli ng/r ehe at de humidi fic at ion c oil l iqui d li ne sol enoi d val ve be ener giz ed.
55 551C - 2 TON CHARGING CHART 65.0 70.0 75.0 80.0 85.0 90.0 95.0 100.0 105.0 42 52 62 72 S u c t i o nL i n eT e m p( d e gF ) Suction Lin e Pressure (psig ) 448.0 498.0 548.0 598.0 648.0 698.0 5.5 10.5 15.5 20.5 25.5 Suction Lin e T emperat ure (d eg C) Suction Lin e Pressure (kpa) FC 125 52 115 4 6 105 41 95 35 85 29 75 24 C06148 Fig.
56 551C - - 4 TON CHARGI NG CHART 67.0 77.0 87.0 97.0 42 47 52 57 62 67 72 77 S u c t i o nL i n eT e m p( d e gF ) Sucti on Li ne Pr essure (psi g) 492.0 542.0 592.0 642.0 692.0 5.6 10. 6 15. 6 20.6 25. 6 Sucti on Li ne Temperatur e (deg C) Sucti on L in e Pressu re (kpa) FC 115 4 6 105 41 95 35 85 29 75 24 C06150 Fig.
57 TROUBLES HOOTING Unit T r oub leshooting Ref er t o T able s 35-37 f or uni t t roubl es hooti ng det ai ls . Economi$er IV T roubleshooting See T able 38 for Ec onoMi$e r IV logic . A func tiona l vi ew of t he EconoM i$e r IV is s hown in Fig. 61.
58 EconoM i$e r IV T roubl es hooti ng Complet ion This proce dure i s use d to ret urn t he EconoMi $er I V to oper at ion. No tr oubles hooting or t es ti ng is done by per for ming t he fol lowi ng proce dure. 1. Disco n n ect p ow er at T R an d TR 1 .
59 T a ble 3 6 —P erfect H um id ity Adaptive De humidi fi cat ion Syst em Subcool ing Mode Ser vic e Analys is PROBLEM CAUSE REMED Y Subcooling Mode (Liquid R ehe at) Will Not Energize. No power to cont rol transformer from evapor ator -fan motor .
60 C06053 Fig. 61 --- Ec onoMi$e r IV Functi onal Vi ew 551B,C.
61 ST ART -UP CHECKLIST (Remov e a nd Store i n Job Fil e) I. PRELIM INAR Y INFORM A TION MODEL NO. : SE RI AL NO.: DA TE : TE CHNIC IAN: II. PRE- ST ART - UP (in sert checkm ark in bo x as each item .
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 Bryant 551C 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 Bryant 551C - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Bryant 551C, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Bryant 551C va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Bryant 551C, 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 Bryant 551C.
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 Bryant 551C. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Bryant 551C 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.
