Manuale d’uso / di manutenzione del prodotto dcm-75ibah del fabbricante Hoshizaki
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Hoshizaki “A Superior Deg re e of Reliability” www .hoshizaki.com Models DCM-751BAH(-OS) DCM-751BWH(-OS) Cubelet Icemaker/Dispenser Hoshizaki America, Inc.
2 W ARNING Only quali ed ser vice technicians should inst all and ser vice the appliance. T o obtain the name and phone number of y our local Hoshizaki Cer ti ed Ser vice Repr esentativ e, visit www .hoshizaki.com. No ser vice should be under tak en until the technician has thor oughly r ead this Ser vice Manual.
3 IMPOR T ANT This manual should be r ead carefull y befor e the appliance is ser viced. Read the warnings and guidelines contained in this manual car efully as the y pro vide essential inf or mation f or the continued saf e use, service, and maintenance of the appliance.
4 B. Impor tant Not es f or Component R eplacement ............................................................ 42 C . Icemaking Unit ............................................................................................................ 44 1 . Upper Bear ing Wear Chec k .
5 Impor tant Safety Inf ormation Throughout this man ual, notices appear to bring y our at tention t o situations which could result in death, serious injur y , damage to the appliance , or damage to pr oper ty . W ARNING Indicates a hazar dous situation whic h could result in death or serious injury .
6 W ARNING, continued • Children should be pr oper l y super vised around the appliance . • Do not climb , stand, or hang on the appliance or allow childr en or animals to do so . Serious injur y could occur or the appliance could be damaged. • Do not use combustib le spra y or place v olatile or ammable subst ances near the appliance.
7 I. Construction and W ater/R efriger ation Circuit Dia grams A. Construction 1 . DCM-751B AH(-OS) Stor age Bin Inlet W ater V alv e Reservoir Contr ol Bo x Air -Cooled Condenser Spout Co ver Evapor .
8 2. DCM-751BWH(-OS) W ater -Cooled Condenser Stor age Bin Inlet W ater V alv e Reservoir Contr ol Bo x Spout Co ver Ev aporator Assemb ly Compr essor Dispensing Motor Agit ator (L) Dispense A uger Di.
9 3. Ice Making Unit Cubelet Cut ter Allen Head C ap Scre w Gear Motor O-Ring Mechanical Seal Extruding Head and Upper Bearing He x Head Bolt with W ashe r A uger Ev aporator Housing and Low er Bear i.
10 Inlet W ater V alve Dispense W ater V alve Drain V alve Float Switch W ater Le vel T o Drain Evapor ator Spout Thermostatic Expansion V alv e Gear Motor Over ow Reservoir W ater Suppl y Drier Air -Cooled C ondenser Fa n High-P ressure S witch Compr essor Refrigeration Cir cuit W ater Cir cuit B.
11 Inlet W ater V alve Dispense W ater V alve Drain V alve Float Switch W ater Le vel T o Drain Evapor ator Spout Thermostatic Expansion V alv e Gear Motor Over ow Reservoir W ater Suppl y Drier W ater -Cooled Condenser Compr essor W ater In W ater Out Refrigeration Cir cuit W ater Cir cuit W ater R egulating Va l v e High-P ressure S witch 2.
12 II. Sequence of Operation and Service Diagnosis A. Sequence of Operation Flo w Char t BC open (BC actuator paddle engaged) "F-A" Contr ol Board Sequence Flo w Char t DCM-751B_H(-OS) 1 -in-1 drain cycle . D V energizes f or 2 seconds ev er y hour (S1 Dip Switch 4).
13 B. Service Diagnosis W ARNING • The appliance should be diagnosed and repair ed only b y quali ed ser vice personnel t o reduce the risk of death, electr ic shoc k, serious injur y , or r e. • Risk of electric shock. Use extr eme caution and ex ercise saf e electr ical practices .
14 7) Startup–"PO WER OK" LED is on: Mov e the power s witch to the "ON" position, then mov e the control s witch to the "ICE" position. CB "POWER OK" LED is on. "PO WEROK" LED Diagnosis: Chec k that CB "PO WER" LED is on.
15 9) Ice Pur g e Cy cle – "GM" LED is on. UFS closes (WV de-ener gizes) and "WTRIN" LED tur ns of f . 5-sec. GM delay timer and 30-min. FZT star t. 5-sec. GM delay timer terminates . GM and GMPR energize . 5-min. IPT star ts. GM runs for 5 min.
16 1 2) Drain Cy cle – "FLUSH" (dr ain) LED is on. IMPORT ANT ! Drain valv e will not energize unless the safety s witch is engaged. The appliance is f actory set to drain the e v aporat or and reservoir once e very hour for 2 seconds .
17 1 3) Shutdown –Bin lls and ice eng ages BC actuator paddle. 6 t o 1 0-sec. shutdown sequence begins. Diagnosis: Chec k that BC actuator paddle is activ ated and not sticking . Check BC pr oximity s witch continuity to conr m BC pr o ximity switch is open.
18 C. Control Boar d Check Bef ore r eplacing a CB that does not show a visib le def ect and that you suspect is bad, alw ay s conduct the follo wing check pr ocedure. This procedur e will help you v erify your diagnosis. Bef ore pr oceeding, chec k f or proper v oltage per appliance nameplate .
19 2) 5VDC Output Checks: There ar e se ven 5VDC cir cuits on the appliance, "DRAIN" position through contr ol switch, high-pr essure s witch (HPS), gear motor pr otect rela y(GMPR), bin control (BC), oat s witch (FS), ice dispense s witch, and wat er dispense s witch.
20 c . Gear Mot or Pr otect Rela y (GMPR) CB K9 connector pins #5 (W/O) and #6(W/O): When GMPR is de-ener gized, GMPR terminals #3 and #5 are open and 5VDC is pr esent bet ween CBK9connector pin #5 (W/O) and CB r ed K4connector pin closest t o CBblac k K3 connector .
21 • 5VDC CB K7 Connector: See Figs . 3, 4, 5, and 6. • W ater Dispense S witch/W ater Dispense Sensor f . P ush But ton Model–"WTRDP" LED is on: Bef ore eng aging the wat er dispense s witch, check f or the correct VDC from the locations giv en in the "Disengaged" column in the tab le below .
22 Red positiv e test lead t o red K4 connector pin closest to b lack K3 connector F ig. 4 Red P ositive T est Lead Black Neg ative T est Lead Multimeter 5VDC Control Boar d K7 Connector W ater Dispense (W) (s witch signal) g .
23 • Ice Dispense S witch/Ice Dispense Sensor : h . P ush But ton Model – "ICE" and "AM" LEDs ar e on: Bef ore eng aging the ice dispense s witch, check f or the correct VDC from the locations giv en in the "Disengaged" column in the t able belo w .
24 i . Opti-Serve Model–"ICE" and "AM" LEDs ar e on: Befor e engaging the ice dispense Opti-Ser v e sensor , check f or the correct VDC from the locations giv en in the "Disengaged" column in the t able belo w . If the VDC is dif fer ent than in the table , replace CB .
25 3) F ill Cyc le–"WTRIN" LED is on: "WTRIN" LED tur ns on only when the r eser voir w ater le v el is low enough t o open LFS. Diagnosis: C onr m LFS is open. If "WTRIN" LED is of f and LFS is open and the control s witch is in the "ICE" position (open), replace CB.
26 D . Bin Contr ol Check When the actuat or paddle is not engaged, BC is closed and the appliance pr oduces ice. S1 dip s witch 7 must be in the "OFF" position. When ice lls the chut e and engages the actuator paddle , BC opens and CB shuts down the appliance within 1 0 seconds.
27 E. Float S witch Chec k and Cleaning 1 . Float Switc h Check 1) Remo ve the fr ont panel and mov e the control s witch to the "DRAIN" position. 2) P r ess and hold the saf et y s witch to star t draining the appliance . IMPOR T ANT! Appliance will not star t unless the safety s witch is engaged.
28 Red (R) (upper oat switch) Black (BK) (common) Dark Blue (DBU) (lower oat switch) Upper Float (blue) Magnet (to war ds top) Magnet (to war ds top) Low er Float (white) Plastic Ret ainer Clip Spring Retainer Clip Reservoir Reservoir C ov er Float Switch Assemb ly F ig.
29 F . Diagnostic T ables Bef ore consulting the diagnostic t ables , check f or correct installation, pr oper v oltage per appliance nameplate , and adequate wat er pressur e (1 0 to 1 1 3 PSIG). Check contr ol board using the st eps in "II.C. Contr ol Board Chec k.
30 No Ice Pr oduction - Possib le Cause F reeze Cyc le 1. Contr ol Board a) Def ective . 2. Star t Rela y a) Defectiv e. 3. Star t Capacit or or Run C apacitor a) Def ective . 4. Compressor a) External prot ector . b) Motor winding . c) Mechanical f ailure .
31 2. Ice/W ater Dispensing Ice Dispense-Push But ton 1. P ower Suppl y a) Of f, b lown fuse, or tripped br eaker . 2. Control Boar d a) Ice dispense s witch circuit open or no pow er (5VDC) from contr ol board. b) No power (1 1 5V AC) t o ice dispense solenoid, ice dispense motor , or agitating mot or .
32 III. Controls and A djustments • A Hoshizaki e x clusive contr ol board is emplo yed in the DCM-751 series. • All models are pr etest ed and f actory set. • F or a control boar d check pr ocedure , see "II.C. Contr ol Board Chec k." NO TICE • F ragile, handle v er y carefull y .
33 T ransf or mer Input #7 (W/R) A. Control Boar d L a yout 1 . DCM-751B_H Drain V alve #1 0 (W/BU) • K6 Connector Open • "SER VICE" Butt on (Ice Pur ge Cycle Bypass) T ransf or mer 24V .
34 Drain V alve #1 0 (W/BU) • K6 Connector Open • "SER VICE" Butt on (Ice Pur ge Cycle Bypass) T ransf or mer 24V AC Input #1 (W/R) Upper Float Switch #6 (R) Mechanical Bin Contr ol #3 t.
35 B. LED Lights and A udible Alarm Saf eties The "PO WER" LED indicates pr oper control v oltage and will remain on unless a contr ol v oltage pr oblem occur s. For fur ther details , see "II. Sequence of Operation and Ser vice Diagnosis.
36 C. Set tings and Adjustments NO TICE Dip s witches are f actory set. F ailure t o maintain f actory set tings may adv ersel y af fect perf or mance and warr ant y co ver age. F or more inf or mation, contact Hoshizaki T echnical Suppor t at 1 -800-233-1 940.
37 4. Continuous Dispensing Timer (S1 dip switch 5 & 6) The dispense mode s witch must be in the "CONTINUOUS" position f or this set ting to apply . The fact or y set ting allows ice t o be dispensed continuousl y on push but ton models and f or a maximum of 60 sec.
38 D . P ow er Switc h, Control S witch, and Dispense Mode S witch The pow er s witch, control s witch, and dispense mode s witch are used t o control the operation of the appliance . 1 . P ower S witch W ARNING! The power s witch does not tur n of f all pow er supply t o the unit.
39 CONTROL DISPENSE MODE 4A1038-0 14 ICE OFF DRAIN PORTION CONTINUOUS 3. Dispense Mode Switc h The dispense mode s witch has 2 positions, "CONTINUOUS" and "POR TION.
40 IV . Remo v al and Replacement of Components W ARNING • The appliance should be diagnosed and repair ed only b y quali ed ser vice personnel t o reduce the risk of death, electr ic shoc k, serious injur y , or r e.
41 1 . Refr igerant R ecov er y The appliance is pro vided with refrigerant access v alv es. Using proper r efr igerant practices , reco v er the refrigerant fr om the access v alv es and stor e it in an appro ved container . Do not discharge the r efrigerant into the atmospher e.
42 5) Disconnect the gauge manif old hose from the v acuum pump and at tach it t o a refrigerant service cylinder . Remember t o loosen the connection and purge the air fr om the hose. See the nameplate inside the appliance f or the requir ed refrigerant charge .
43 Ev aporat or Assemb ly F ig. 1 4 Spout B Spout A P ower S witch Ev aporator Assemb ly Saf et y S witch CONTROL DISPENSE MODE 4A1038-0 14 ICE OFF DRAIN PORTION CONTINUOUS Extruding Head and Upper Be.
44 C. Icemaking Unit 1 . Upper Bearing W ear Check T o ensur e that the bear ing inside the e xtr uding head does not e x ceed the wear t olerance of .02", f ollow the instructions below . See Fig . 1 5. 1) Mov e the control s witch to the "OFF" position, then turn off the po wer supply .
45 2. Remo val and R eplacement of Extruding Head 1) Mov e the control s witch to the "DRAIN" position and drain all of the w ater fr om the e v aporat or . 2) Af ter the w ater has st opped draining, mo ve the control s witch to the "OFF" position, then tur n of f the power suppl y .
46 4. Remo val and R eplacement of Evapor ator NO TICE • Alw ay s install a ne w drier ev er y time the sealed refrigeration s yst em is opened. • Do not replace the drier until af ter all other r epair or replacement has been made. Install the ne w drier with the arrow on the drier in the dir ection of the refrigerant o w.
47 1 6) Evacuat e the syst em, and charge it with r efrigerant. See the nameplat e f or the requir ed refrigerant char ge. 1 7) Install the new auger assemb ly with the upper par t of the mechanical seal at tached. Secure the auger assemb ly using ne w allen head cap scre ws.
48 1 3) Install the low er par t of the mechanical seal on the lower housing . 1 4) Lower the e vapor ator do wn and secure it t o the lower housing . 1 5) Install the auger assembl y with the upper par t of the mechanical seal at tached. Secure the auger assembl y using new allen head cap scr ews .
49 D . Dispense Components 1 . Dispense A ug er and Agitat or 1) Mov e the control s witch to the "OFF" position, then turn off the po wer supply . R emov e the front and t op panels, then mov e the power s witch to the "OFF" position.
50 V . Maintenance The maintenance schedule belo w is a guideline. More frequent maint enance may be requir ed depending on wat er qualit y , the appliance's envir onment, and local sanitation regulations . W ARNING • Only quali ed ser vice technicians should service the appliance.
51 VI. Pr eparing the Appliance for P eriods of Non-Use NO TICE When st or ing the appliance f or an ext ended time or in sub-freezing temper atures , f ollow the instructions below t o pre vent damage.
52 2. On wat er-cooled model onl y , remo ve the w ater from the w ater -cooled condenser: 1) Make sur e the control s witch and the power s witch are in the "OFF" position and that the pow er supply is of f . Remo ve the t op, apr on, and lef t side panels.
53 VII. Disposal The appliance contains r efrigerant and must be disposed of in accor dance with applicable national, st ate , and local codes and regulations.
54 Note: We r eser v e the right to mak e changes in specications and design without pr ior notice. AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 115 V 77 LRA 11.0 RLA GEAR MOT OR 115 V 3.0 FLA 1/4 HP FAN MOT OR 115 V 1.0 FLA 50 W AGITAT ING MOT OR 120 V 1.
55 Note: We r eser v e the right to mak e changes in specications and design without pr ior notice. AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 115 V 77 LRA 11.0 RLA GEAR MOT OR 115 V 3.0 FLA 1/4 HP FAN MOT OR 115 V 1.0 FLA 50 W AGITAT ING MOT OR 120 V 1.
56 Note: We r eser v e the right to mak e changes in specications and design without pr ior notice. AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 115 V 77 LRA 11.0 RLA GEAR MOT OR 115 V 3.0 FLA 1/4 HP AGITAT ING MOT OR 120 V 1.8 F LA (TOT AL) 110 W (TO TAL) DISPENSING MOT OR 115 V 0.
57 Note: We r eser v e the right to mak e changes in specications and design without pr ior notice. AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 115 V 77 LRA 11.0 RLA GEAR MOT OR 115 V 3.0 FLA 1/4 HP AGITAT ING MOT OR 120 V 1.8 FLA (T OTAL) 110 W (TO TAL) DISPENSING MOT OR 115 V 0.
58 Note: 1 . The data not in bold should be used for r efer ence only . 2. W e reserve the right to mak e changes in specications and design without pr ior notice. APPROXIM ATE Ambient ICE PRODUCTION T emp. (°F) PER 24 HR. 70 801 363 757 343 725 329 80 695 315 666 302 639 290 90 612 278 583 265 562 255 lb.
59 Note: 1 . The data not in bold should be used for r efer ence only . 2. W e reserve the right to mak e changes in specications and design without pr ior notice. APPROXIMATE Am bient ICE PRODUCTIO N Temp. (°F) PER 24 HR. 70 800 363 779 353 758 344 80 738 335 719 326 700 317 90 681 309 685 311 646 293 lb.
60 * * High P ressur e Switch Air -Cooled Model Wat er -Cooled Model Cut-out 41 2± 21 PSIG 384± 21 PSIG Cut-in 327±21 PSIG 284±21 PSIG 0 0 C. W iring Diagrams 1 .
61 * * High P ressur e Switch Air -Cooled Model Wat er -Cooled Model Cut-out 41 2± 21 PSIG 384± 21 PSIG Cut-in 327±21 PSIG 284±21 PSIG 0 0 2. DCM-751B_H-OS.
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 Hoshizaki dcm-75ibah 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 Hoshizaki dcm-75ibah - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Hoshizaki dcm-75ibah imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Hoshizaki dcm-75ibah ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Hoshizaki dcm-75ibah, 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 Hoshizaki dcm-75ibah.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Hoshizaki dcm-75ibah. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Hoshizaki dcm-75ibah 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.
