HoshizakiメーカーDCM-500BWH-OSの使用説明書/サービス説明書
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Hoshizaki “A Superior Degr ee of Reliability” www .hoshizaki.com Models DCM-500BAH DCM-500BAH-OS DCM-500BWH DCM-500BWH-OS Cubelet Icemaker / Dispenser Hoshizaki America, Inc.
2 IMPOR T ANT Only quali ed ser vice technicians should at t empt t o install, service, or maintain this icemaker . No ser vice or maint enance 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 car efull y bef ore the icemak er is ser viced or maintenance oper ations ar e perf or med. Only quali ed ser vice technicians should install, service, and maintain the icemak er . Read the warnings contained in this booklet car efull y as the y giv e impor tant inf or mation reg arding saf ety .
4 E. P erformance Data ....................................................................................................... 34 1 . DCM-500BAH(-OS) ................................................................................................ 34 2.
5 I. Specications A. Icemaker 1 . DCM-50 0B AH Note: We r eser v e the r ight t o make changes in specications and design without prior notice. AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 120 V 7.9 RLA 51 LRA GEAR MOTOR 120 V 2.4 FLA 1/4 HP FAN MOTOR 120 V 1.
6 2. DCM-50 0BAH-OS Note: We r eser v e the r ight t o make changes in specications and design without prior notice. AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 120 V 7.9 RLA 51 LRA GEAR MOTOR 120 V 1.6 FLA 1/6 HP FAN MOTOR 120 V 0.6 FLA 30 W AGITATING MOTOR 120 V 0.
7 Note: We r eser v e the r ight t o make changes in specications and design without prior notice. 3. DCM-50 0BWH AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 120 V 7.9 RLA 51 LRA GEAR MOTOR 120 V 2.4 FLA 1/4 HP AGITATING MOTOR 120 V 0.9 FLA 55 W DISPENSING MOTOR 120 V 0.
8 4. DCM-50 0BWH-OS Note: We r eser v e the r ight t o make changes in specications and design without prior notice. AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 120 V 7.9 RLA 51 LRA GEAR MOTOR 120 V 1.6 FLA 1/6 HP AGITATING MOTOR 120 V 0.9 FLA 55 W DISPENSING MOTOR 120 V 0.
9 II. General Inf ormation A. Construction 1 . DCM-50 0B AH(-OS) Stor age Bin Inlet W at er V alv e Reservoir Contr ol Box Air -Cooled Condenser Spout Co v er Ev aporat or Assembl y Compr essor Dispen.
10 2. DCM-50 0BWH(-OS) Stor age Bin Inlet W at er V alv e Reservoir Contr ol Box W ater -Cooled Condenser Spout Co v er Ev aporat or Assembl y Compr essor Dispensing Motor Agit ating Mot or Agit at or.
11 B. Ice Making Unit 1 . DCM-50 0B AH(-OS), DCM-50 0BWH(-OS) Cubelet Cut ter Allen Head C ap Scr e w Gear Motor Spline Coupling O-Ring Mechanical-Seal Extruding Head and Upper Bearing He x Head Bolt .
12 C. Sequence of Operation The steps in the sequence ar e as outlined below . When pow er is supplied, the pow er s witch is in the "ON" position, the door s witch is engaged, and the contr ol s witch is in the "ICE" position, the "PO WER" LED on the contr ol boar d comes on.
13 Legend: BC - bin control Comp - compressor DC - drain cy cle DT - drain timer DV - drain v al ve FMS - self-contained f an motor FT - ll timer (low w at er saf ety) GM - gear motor GMPR - gear m.
14 D . Contr ol Board • A Hoshizaki e x clusive solid-st at e contr ol boar d is emplo yed in DCM-500BAH, DCM-500BAH-OS , DCM-500BWH, and DCM-500B WH-OS Cubelet Icemak er / Dispensers . • All models are pr etest ed and f actor y -adjusted. C A UTION 1 .
15 Micropr ocessor (boar d re vision lev el indicated b y last 2 digits on label) "POWER" LED (lights when power is supplied to the boar d) "FLUSH" LED (X5 Rela y) Drain V alve "COMP" LED (X2 Rela y) Compr essor , F an Motor 1 0.
16 Dispensing Components See "III.B. W iring Diagrams" f or details. Bin Contr ol, Contr ol S witch, Low W ater Saf et y Micropr ocessor (boar d re vision lev el indicated b y last 2 digits .
17 2. Feat ures The control boar d pro vides the f ollowing saf eguar ds: • P r ovides component pr otection during low wat er supply . • P urges r emaining ice in the e vaporat or at star tup and shutdown. •P r ovidesshor tcy cleprot ectionf orthecompressor .
18 3. Controls and Adjustments a) P or tion Control When the dispense mode s witch is placed in the "POR TION" position, a v ar iable r esistor (located on the contr ol board) contr ols the ice dispense time . The gures on the label indicat e dispensing time (sec.
19 3. 60 seconds af t er the "GM" LED comes on, the "COMP" LED comes on, and the compressor and f an motor st ar t. If the "COMP" LED does not come on 60 seconds af ter the gear mot or star ts , chec k that the gear mot or pr otect r elay cont acts (connect or K2 terminals 1 and 2) hav e closed.
20 E. Float S witch Depending on local wat er conditions, scale ma y b uild up on the oat switch. Scale on the s witch can cause the oats to stic k. In this case, the oat switch should be cleaned and check ed. F ir st, r emov e the switch fr om the wat er tank.
21 III. T echnical Infor mation A. W at er Cir cuit and R efr igeration Cir cuit 1 . DCM-50 0B AH(-OS) Inlet W at er Va l v e Dispensing W at er V alv e Drain Va l v e Float Switch W at er Le v el T o.
22 2. DCM-50 0BWH(-OS) Inlet W at er Va l v e Dispensing W at er V alv e Drain Va l v e Float Switch W at er Le v el T o Drain Evapor ator Spout Expansion Va l v e Gear Motor Over ow Reservoir W at.
23 * (Control Board) BK BLACK BR BROWN BU BLUE DBU DARK BLUE GY GRA Y LBU LIGHT BLUE O ORANGE P PINK R RED V VIOLET W WHITE Y YELLO W W/BK WHITE/BLACK W/BR WHITE/BRO WN W/BU WHITE/BLUE W/O WHITE/ORANGE W/R WHITE/RED WIRE COLOR CODE B. W iring Diagr ams 1 .
24 2. DCM-50 0BAH-OS, DCM-50 0BWH-OS BK BLACK BR BROWN BU BLUE DBU DARK BLUE GY GRA Y LBU LIGHT BLUE O ORANGE P PINK R RED V VIOLET W WHITE Y YELLO W W/BK WHITE/BLACK W/BR WHITE/BRO WN W/BU WHITE/BLUE.
25 C. Sequence of Electrical Cir cuit – Ice Making 1 . F ill Cyc le With the po wer s witch in the "ON" position and the contr ol s witch in the "ICE" position, the inlet wat er val v e energizes and the r eser voir lls with wat er until the upper oat s witch closes .
26 2. Ice Pur ge Cyc le Upper oat s witch closes, wat er control r ela y energizes , inlet w at er v al v e closes , gear motor st ar ts, gear mot or prot ect r ela y energizes .
27 3. F reeze Cyc le Compr essor and fan mot or star t 60 seconds af t er gear motor st ar ts. BK BLACK O ORANGE W/BK WHITE/BLACK BR BROWN P PINK W/BR WHITE/BRO WN BU BLUE R RED W/BU WHITE/BLUE DBU DA.
28 4. 1 2 Hour Dr ain Cyc le / Drain S witch 1 2 hour timer initiates cy cle or the control s witch is mov ed t o the "DRAIN" position. 90 seconds af ter initiation, the compr essor and condenser f an motor st op , 60 seconds later the gear mot or stops .
29 5. Shutdown The bin control s witch is activ at ed and a 1 50 second shutdown sequence begins. Af ter the bin control has been open f or 90 seconds, the compr essor and fan mot or st op , the agitating mot or operat es for 0.6 seconds , and 60 seconds later the gear motor st ops.
30 6. Low W ater Safety Upper oat s witch fails t o close within 90 seconds af t er the low er oat switch opens , the 1 50 second shutdown sequence begins.
31 7 . High Pr essur e S witch When the high pr essure s witch opens, the compressor st ops immediatel y , 60 seconds later the gear mot or stops . T o rest ar t, allow time f or the high pressur e s witch to close, then mov e the power s witch to the "OFF" position and then bac k t o the "ON" position.
32 D . Sequence of Electr ical Cir cuit – Dispensing 1 . Continuous Dispense Agit ating mot or ener giz es f or .6 seconds f or ev er y 1 2 seconds of accumulative dispense time. Maximum dispense time per dispense s witch activation is 60 seconds . Af t er 60 seconds, the dispense s witch must be diseng aged and eng aged again.
33 2. P ortion Dispense Agit ating mot or ener giz es f or .6 seconds f or ev er y 1 2 seconds of accumulative dispense time. A variab le r esist or which contr ols the amount of ice dispensed is locat ed on the control boar d. The gures on the label indicat e dispensing time (sec.
34 E. P erf ormance Data 1 . DCM-50 0B AH(-OS) Note: 1 . The data without *marks should be used f or r ef er ence onl y . 2. W e r eserve the right to mak e changes in specications and design without prior notice. APPROXIMATE Ambient Water Temp. (°F) ICE PRODUCTION Temp.
35 2. DCM-50 0BWH(-OS) Note: 1 . The data without *marks should be used f or r ef er ence onl y . 2. W e r eserve the right to mak e changes in specications and design without prior notice. APPROXIMATE Ambient Water Temp. (°F) ICE PRODUCTION Temp.
36 IV . Service Diagnosis A. Diagnostic P r ocedure This diagnostic procedur e is a sequence check that allo ws y ou to diagnose the electrical sy stem and components . Befor e proceeding , check f or correct inst allation, adequat e wat er supply (minimum of 1 0 PSIG, maximum of 1 13 PSIG) and pr oper volt age per unit nameplate .
37 6) Re ll /Low Wat er Safety – As ice is produced, the w at er le vel in the r eser v oir drops. As the wat er lev el drops, the upper and lo wer oat s witches open. Fir st, the upper oat s witch opens. Nothing occurs at this time. When the lo wer oat switch opens , re ll begins.
38 C. Diagnostic Charts 1 . No Ice P r oduction Pr oblem P ossible Cause Remed y [1] The icemak er will not star t. (Fill C ycle) a) P ower Suppl y 1. Of f, b lo wn fuse, or tripped break er . 1. T ur n on, replace , or reset. 2. Loose connection. 2. Tight en.
39 Pr oblem P ossible Cause Remed y [1] The icemak er will not star t. (Fill C ycle) (continued) m) High P ressur e Switch 1. Bad contacts. 1. Chec k f or continuity and replace . 2. Dir ty air lt er or condenser . 2. Clean. 3. Ambient or condenser wat er t emperatur e t oo warm.
40 Pr oblem P ossible Cause Remed y [3] Ice pur ge cycle will not star t. a) W ater Contr ol R ela y 1. Low w ater saf et y circuit open (bad contacts ). 1. Replace . b) Contr ol S witch 1. Bad contacts. 1. Check f or continuit y and replace . c) Bin Contr ol 1.
41 Pr oblem P ossible Cause Remed y [5] All components run, but no ice is produced. (continued) d) Evapor at or 1. Def ective . 1. Replace. e) W ater Supply Line (wat er -cooled model only) 1. Condenser w ater pressur e too low or of f and high pressure control opens and closes frequentl y .
42 3. Other Pr oblem P ossible Cause Remed y [1] Icemaker will not stop when bin is lled with ice. a) Bin Control 1. Actuat or sticking. 1. Adjust or r eplace. 2. P ro ximit y s witch closed. 2. Replace . [2] Abnor mal noise. a) F an Motor (e xcept wat er -cooled model) 1.
43 4. Dispensing Pr oblem P ossible Cause Remed y [1] No ice dispensed. a) P ower Suppl y 1. "OFF" position. 1. Mo v e to "ON" position. 2. Loose connection. 2. Tight en. 3. Bad contacts . 3. Chec k for continuity and replace . 4. Not within specications.
44 Pr oblem P ossible Cause Remed y [3] No water dispensed. a) P ower Suppl y 1. "OFF" position. 1. Mo v e to "ON" position. b) W ater Suppl y 1. W ater suppl y off or pressur e too low . 1. Check and get recommended pr essure. c) Dispensing W ater Va l v e 1.
45 5a. Ice Dispensing "Continuous" Mode Component Contr ol Board Sensor Control Boar d /Other Sensor On O ff Solenoid K2 Pin 6 LBU - To Neutr al/GND - 120V A C 0 VA C Sensor K5 Pin 4 W/0 R To K5 Pin 5 Y WH 5VDC 0VDC K5 Pin 6 W/BR BK 5VDC 5VDC 5b.
46 V . R emov al and R eplacement of Components IMPOR T ANT 1 . Ensure all components , fast eners, and thumbscr ews ar e secur el y in place af ter the equipment is ser viced. 2. The P ol y ol E ster (POE) oils used in R-404A units can absorb moisture quickl y .
47 1) Alw ay s install a ne w dr ier e ver y time the sealed r efrigeration s y st em is opened. Do not replace the drier until af ter all other r epair or replacement has been made. Install the new drier with the arr ow on the drier in the dir ection of the r efrigerant o w .
48 B. Remo val and R eplacement of Compressor IMPOR T ANT Alw ay s install a new drier e v er y time the sealed r efrigeration s y st em is opened. Do not replace the drier until af t er all other r epair or r eplacement has been made.
49 C. Remo val and R eplacement of Expansion V alve IMPOR T ANT Sometimes moisture in the r efr igeration cir cuit ex ceeds the drier capacit y and freez es up at the expansion v alv e . Alwa ys inst all a ne w drier ev er y time the sealed refrigeration s yst em is opened.
50 F ig. 1 Extruding Head and Upper Bearing Ev aporat or Allen Head C ap Scr e w with W asher Allen Head C ap Scr e w Housing and Low er Bearing Gear Motor Barrier Spline Coupling O-Ring Mechanical Seal A uger Cut ter A uger Pin He x Head Bolt with W asher D .
51 1 . Upper Bear ing W ear Check T o ensure that the bearing inside the extruding head does not e x ceed the wear toler ance of .02", f ollow the instructions below . See Fig . 2. 1) Mov e the control s witch to the "OFF" position, then turn off the po wer supply .
52 8) Replace spout A, spout B, and the fr ont cover of the st orage bin in their correct positions. 9) Mov e the power s witch to the "ON" position, then r eplace the panels in their corr ect positions.
53 3) Remo ve the apr on panel, then r emov e the lef t side panel. 4) Reco ver the r efrigerant and st ore it in an appr ov ed container . 5) Disconnect the drip tra y hose fr om the t ee. Remo ve the f our scre ws securing the dr ip tra y , then remov e the dr ip tra y and hose.
54 5. Remo v al and R eplacement of Mechanical Seal and Lo w er Housing 5a. Mechanical Seal 1) Mov e the control s witch to the "DRAIN" position and drain all of the w at er fr om the e v aporator . 2) Af ter the wat er has stopped draining , mov e the contr ol s witch to the "OFF" position, then tur n of f the power suppl y .
55 1 8) Mov e the po wer s witch to the "ON" position, then r eplace the panels in their corr ect positions. 1 9) T ur n on the pow er suppl y , then mov e the control s witch to the "ICE" position t o star t the automatic icemaking pr ocess.
56 1 7) Mov e the po wer s witch to the "ON" position, then r eplace the panels in their corr ect positions. 1 8) T ur n on the pow er suppl y , then mov e the control s witch to the "ICE" position t o star t the automatic icemaking pr ocess.
57 F . R emo val and R eplacement of W ater -Cooled Condenser IMPOR T ANT Alw ay s install a new drier e v er y time the sealed r efrigeration s y st em is opened. Do not replace the drier until af ter all other r epair or replacement has been made. 1) Mov e the control s witch to the "OFF" position, then turn off the po wer supply .
58 G. Remo val and R eplacement of W ater R egulating V alve - W ater -Cooled Model Only IMPOR T ANT Alw ay s install a new drier e v er y time the sealed r efrigeration s y st em is opened. Do not replace the drier until af ter all other r epair or replacement has been made.
59 20) Mov e the power s witch to the "ON" position, then r eplace the panels in their corr ect positions. 21) T ur n on the power suppl y , then mov e the control s witch to the "ICE" position t o start the automatic icemaking pr ocess.
60 J . Remo val and R eplacement of Inlet or Dispensing W ater V alve 1) Close the wat er supply line shut-of f val ve . 2) Open the wat er supply line drain v alv e . 3) Mov e the control s witch to the "OFF" position, then turn off the po wer supply .
61 1 0) Open the wat er supply line shut-of f val ve . 1 1) T ur n on the pow er suppl y , mov e the power s witch to the "ON" position, then r eplace the front panel in its corr ect position to eng age the door s witch. Mov e the control s witch t o the "ICE" position.
62 6) Install the ne w mot or . 7) Assemble the r emov ed par ts in the re ver se order of which the y wer e remov ed. 8) Mov e the power s witch to the "ON" position, then r eplace the panels in their corr ect positions.
63 VI. Cleaning and Maintenance IMPOR T ANT Ensure all components , fast eners, and thumbscr ews ar e secur el y in place af ter any cleaning or maint enance is done to the equipment. A. Cleaning and Sanitizing Instructions HOSHIZAKI recommends cleaning this unit at least twice a year .
64 1 . W ater Sy stem a) Cleaning Solution Dilute 9.6 . oz. (0.29 l) of Hoshizaki "Scale A wa y" with 1 .6 gal. (6.0 l) of warm water . b) Cleaning Pr ocedure 1) Close the wat er supply line shut-of f val ve . 2) Mov e the dispense mode switch t o the "CONTINUOUS" position, then dispense all of the ice from the st orage bin.
65 1 3) Mov e the contr ol s witch to the "OFF" position, then tur n of f the pow er suppl y . 1 4) Close the wat er suppl y line shut-of f val ve . c) Sanitizing Solution Dilute 0.82 . oz. (25 ml) of a 5.25% sodium hypochlorit e solution (chlorine bleach) with 1 .
66 3) Remo ve the fr ont co v er of the st orage bin. 4) Remo ve the mot or brac ket thumbscr e ws, r st from the v er tical plane and then fr om the horizontal plane . W hile holding on t o the corr esponding agitat or or auger , mo v e the agitating mot or or the dispensing mot or t o war ds you.
67 B. Maintenance This icemaker m ust be maintained individuall y , ref erring to the instruction manual and labels pro vided with the icemaker . The schedule below is a guideline. More fr equent maintenance , howe ver , may be r equired depending on wat er qualit y , the icemaker's envir onment, and local sanitation regulations .
68 C. Pr eparing the Icemak er f or Long Stor age C A UTION When the icemak er is not used for t wo or thr ee day s under nor mal conditions, it is suf ficient t o onl y mov e the control s witch to the "OFF" position.
69 2. On wat er -cooled model only , r emo v e the w ater fr om the wat er-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 suppl y is of f. R emov e the top , apron, and lef t side panels.
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