Manuale d’uso / di manutenzione del prodotto MCO-GS-10M del fabbricante Garland
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GARLAN D A WELBILT COMPANY BUILT TO LEAD... BUILT T O LAST SER VICE MANU AL THE “M ASTE R” GAS C ONV ECTION OVEN S Models covered in this manual are: MCO-GS-10M : M ASTER C ONVECTION O ven - G AS .
2 This service manual is designed to answer questions related to model operational req uirements, troubleshoo ting and disassembly/assembly procedures. It contains electronic ignition o peration, t rouble- shooting and electronic co ntrol o perations that includ e diagnostic cod es, ladder diagrams, wire diagrams and troubleshoo ting.
3 SECTION 3 : COMPONE NT A CCESS OF FUNCTIONA L COMPONENTS ...... ......... ......... ........ .. 16 DOOR GASKET REPLA CEM ENT ....................................................................................................... ....................
4 GA S CONVE CTION OVEN "GA S SPECI FICA TIONS” TOTA L MA IN BURNER ORIFICE PILOT PILOT ORIFICE GA S PRES. W /C B.T.U.'S ORIFICE A MT. ORIFICE A MT. NA T PRO NA T PRO NA T PRO * ** MCO 40,000 5 / 64 ” (.0781”) #55 2 .020" .012" 1 4.
5 Understanding the sequenc e of operation is necessary in properly trouble-s hooting this appliance. In this s ection the sequence of operation w ill be covered first, as well as c alibration and op eration of com ponents, and bas ic trouble shooting techniques for that specific m odel.
6 A therm oc ouple type test instrum ent is prefer red for m easuring oven temper atures ac curately. Mercury thermom eters are acceptable providing they can be proven accurate. Regardless of the ty pe instr ument used, it is m ost desirable to double-check it just bef ore m aking an oven temper ature check .
7 five tim es doubling the thicknes s with each fold. After the f ifth fold, place the therm ocouple tip in the center of the aluminum piece and fold once m ore.
8 ELECTRO NIC CONT ROLS - “ E” Sequence of Operation (W ith the Oven Doors Closed) 1. Line Voltage is supplied to the Mode Switch, Door Switch and the Momentary Light Switch. 2. Set Mode Switch to COO K and clos e the oven doors . Line Voltage is s ent f rom Mode Switch to power up the C ontroller and to the AUX r elay on the contr oller.
9 ELECTRONIC CONTROL FA ILURE CODES The G ARLAND digital control has a self -diagnostic program . If a problem occ urs within the digital c ontroller, you m ay see one of the "F" codes. Below is a li sting of the "F" codes with explanatio ns: -F1- Relay output is enabled when not cooking.
10 The contr oller needs voltage to operate and i s c apable of operating on three (3) differ ent line voltage s, 115 Vac, 208 Vac, 240 Vac. On the back of the Robertshaw COM6000 there are s everal ¼ ” male spade term inal or p in connections.
11 The Us er Pref erence Of fset is designed to enable the user to adjust the c ontrolling tem perature. T here are two different sty les of controllers used by G ARLAND at the pr esent time.
12 Entry Exit UPO - User Preference Offset . Used by the user to adjust t he controlling temperature +/- 50º in 1º increments. 1. Set the time digits to 00:00. 2. Set the temperature digits to X 10º. 3. Depress & hold the Start button for f ive seconds.
13 The saf ety lockout tim er circuit starts tim ing the m om ent the trial f or pilot ignition star ts. W hen the tim ing period runs out, the trial f or ignition ends, and the control m odule goes into lockout. Before another attem pt to start can be m ade, the S86 m ust be res et.
14 and answering conditions in each box enc ountered, until a problem and/or the repair is ex plained. After any maintenance or r epair, the tr ouble s hooting s equence should be r epeated until the trouble shooting procedur e ends with a normal system operation.
15 CHECK GROUNDING A com m on ground is required f or the pilot burner, the ignitor-sensor, the GND term inal of the S86, and the m ain burner. T he m ain burner generally serves as the com m on ground. If the ground is poor or erratic, saf ety shutdowns may occur occ asionally even though operation is norm al at the tim e of the check out.
16 A PPEA RA NCE CA USE SMALL BLUE FLAME Check for lack of gas f rom : • Clogged orifice filter • Clogged pilot filter • Low gas supply pressure • Pilot adjustment at m inim um LAZY Y ELLOW FL.
17 This se ction will give you the be st way to access compo nent for rep laceme nt. COMPONENT LOCATIONS: Top Front Center Door Chain Door Catch Right Front Control Pa nel 24v Tran sform er, Ignition .
18 2. Lo cate sta inless ste el door gas ket, m ounte d to o ven fron t fra me. 3. Rem ove the #10 Ph illips shee t meta l screw that a ttach t he reta iner to t he oven's f ront fram e. 4. Rem ove stainle ss steel d oor gasket. 5. Rep lace stain less stee l door gaske t and to reverse a bove proced ure to re-install.
19 2. Remove d oor chain assem bly (NOTE: T he “A ” mode l does n ot com e equip ped with do or chain). 3. Remove f lat he ad m etal screw 1/4 ”-20x1/2” f rom b earing retain er. 4. Push th e doo r toward hinge and lif t up. NOTE: Botto m be aring retaine r will stay in place.
20 1 2 3 4 7 5 7 8 6 NOTICE: DEPENDENT DOOR SHOWN 7 To d isassemb le lef t doo r: 1. Once th e doo r has b een rem oved f rom t he oven (ref er to instruction s on t he previous page), remove th e 12 t russ hea d 10 x ½ Phillips screws .
21 1 2 3 4 5 NOTIC E: DEP END ENT R IGHT HAND DOOR SHOWN . 1. Once th e doo r has b een rem oved f rom t he oven (ref er to instruction s on p age 19), remove 9 truss hea d s.m .s. 10 x ½ from the top, b ottom and left s ide (as sh own) from the d oor pa nel .
22 To Replace or A djust Door Latch Mechanis m 1. Open oven doo rs. 2. Remove 2 pan h ead P hillips screws. 3. Lift door latc h mec hanism up an d out of door assemb ly. 4. To a djust lat ch me chanism , loosen lock nu t & and adjust b y tightening or loo sening ad justme nt nu t.
23 A ssembl y FILE NAME JIT00012 7 6 2 1 3 8 5 4 5 9 1. Assemb le moto r moun t plate , * insulat ion, moto r moun t plate inner t ogether b y fast ening f our f lat hea d m.s . 1/4-20 x2½ " into th e f our hole s note d on t he ab ove drawings.
24 Main B urner, Pilo t Burne r Rem oval & Doo r Micr o Sw i tch Loc ation 1 2 3 4 To a ccess the Burne rs, Pilot or Do or Switch - rem ove the lo wer combust ion cha mber, (not sho w). This e xposes the se com pone nts, also you will note th at the rating or da ta plat e is on the insid e of the co mbust ion shrou d.
25 SECTION 4: - C OMMO N W IRE D IA GRA MS.
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Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Garland MCO-GS-10M è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Garland MCO-GS-10M - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Garland MCO-GS-10M imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Garland MCO-GS-10M ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Garland MCO-GS-10M, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Garland MCO-GS-10M.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Garland MCO-GS-10M. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Garland MCO-GS-10M insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
