Instruction/ maintenance manual of the product DCM 300BAH(-OS) Hoshizaki
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Hoshizaki “A Superior Degr ee of Reliability” www .hoshizaki.com Models DCM-300BAH(-OS) Cubelet Icemaker/Dispenser Hoshizaki America, Inc. Number: 73189 Issued: 1-5-2012 SE RV ICE MA NU AL.
2 W ARNING Only quali ed ser vice technicians should inst all and ser vice the icemak er . 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 CONTENTS Impor tant Saf et y Inf or mation ................................................................................................. 5 I. Specications .......................................................................................
4 IV . Ser vice Diagnosis ........................................................................................................... 21 A. Ice P roduction Chec k ........................................................................................
5 Impor tant Safety Inf ormation Throughout this man ual, notices appear t o bring your at tention t o situations which could result in death, serious injur y , damage t o the appliance, or damage t o proper t y . W ARNING Indicates a hazar dous sit uation which could r esult in death or serious injury .
6 NO TICE •F ollo wtheinstructionsinthismanualcarefull ytor educetheriskofcostlyw at er damage. •Inareaswher ewat erdamageisaconcer n,installinacont ainedar eawitha oor drain.
7 I. Specications A. Icemaker 1 . DCM-30 0B AH(-OS) Note: We r eserve the right to mak e changes in specications and design without prior notice. AC SUPPLY VOLTAGE 115-120/60/1 COMPRESSOR 115 V 6.0 RLA 29 LRA GEAR MOTOR 120 V 1.45 FLA 80 W FAN MOTOR 115 V 0.
8 CONTROL DISPENSE MODE 4A1038-0 14 ICE OFF DRAIN PORTION CONTINUOUS II. General Inf ormation A. Construction 1 . Icemaker Stor age Bin Inlet W ater V alv e Reservoir Contr ol Bo x Air -Cooled Condens.
9 2. Icemaking Unit Cut ter Seal Bolts and Washer s Gear Motor Spline Coupling O-Ring Mechanical Seal Extruding Head and Upper Bearing A uger Ev aporat or Housing and Low er Bearing He x Bolt and Wash.
10 B. Sequence of Operation 1 . Sequence Cycles and Shutdo wn The steps in the sequence ar e as outlined below . When pow er is supplied, pow er s witch is in the "ON" position, saf ety switch is eng aged, and the control s witch is in the "ICE" position, CB"PO WER" LED turns on.
11 2. Sequence Flow Chart Legend: BC -bin control CB -control boar d Comp -compressor DCT - drain cy cle timer (1 2-hr. timer) DV -drain v al ve D V T- drain v alv e timer (20-min.
12 C. Control Boar d • A Hoshizaki e x clusive contr ol board is emplo yed in Hoshizaki icemak er s. • All models are pr e-test ed and f actor y adjust ed. • F or a contr ol boar d chec k pr ocedur e, see "IV .C . Contr ol Boar d Chec k P rocedur e.
13 • "PO WER" LED (green) (lights when 1 0.5V AC is supplied to K4 connect or pins #1 & #2) • "FLUSH" (drain) LED (X5 Rela y) K2 Connect or Pin #8 1 2-hr .
14 Control Boar d P ar t Number 2A2649-0 1 b) DCM-30 0B AH-OS • K5 Connector #1, 2, 3 Ice Dispense Mode Switch, P or tion Operation (5VDC) #4, 5, 6 Ice Dispense Mode Switch, C ontinuous Operation (5VDC) #7 , 8, 9 W ater Dispense Sensor (5VDC) • "FLUSH" (drain) LED (X6 Rela y) K2 Connect or Pin #1 0 1 2-hr .
15 2. LED Lights and Components The "PO WER" LED indicat es contr ol v oltage and will remain on unless a contr ol v oltage prob lem occurs .
16 3. Dispense Mode Switc h The dispense mode s witch has 2 positions , "CONTINUOUS" and "POR TION." a) CONTINUOUS When the dispense mode s witch is in the "CONTINUOUS" position, ice dispenses continuousl y f or a maximum of 60 seconds per activ ation.
17 III. T echnical Infor mation A. W at er Cir cuit and R efr igeration Cir cuit Inlet W at er Va l v e Dispense 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.
18 * B. W iring Diagrams 1 . DCM-30 0B AH * High-P ressur e S witch Cut-out 41 2± 21 PSIG Cut-in 327±21 PSIG 0.
19 2. DCM-30 0BAH-OS * High-P ressur e S witch Cut-out 41 2± 21 PSIG Cut-in 327±21 PSIG 0 *.
20 C. P erf ormance Data 1 . DCM-30 0B AH(-OS) APPROXIMATE Ambient ICE PRODUCTION Temp. (°F) PER 24 HR. 70 321 146 307 139 291 132 80 277 125 263 119 249 113 90 237 107 232 105 214 97 lbs.
21 IV . Service Diagnosis W ARNING • Thisicemakershouldbediagnosedandr epairedonl yb yquali edser vice personnel t o reduce the risk of death, electr ic shoc k, serious injur y , or re . •Riskofelectricshock.
22 7) Startup – Mov e the power s witch to the "ON" position, then mo v e the control s witch to the "ICE" position to st ar t the aut omatic icemaking process . Diagnosis: Check that CB "PO WER" LED is on. If not, check f or proper po wer suppl y voltage (1 1 5V AC) input t o CT .
23 9) Ice Pur g e Cy c le – "GM" LED is on. GM and GMPR ener gize . 60-sec. ice purge timer star ts. GM runs for 60 sec. to clear an y ice from the e vaporat or . Note: GM cannot energiz e unless UF/S is closed, WCR is ener gized, and WCR t er minals #4 (O wir e) and #6(GYwire) ar e closed.
24 1 2) Drain Cy c le – "FLUSH" (dr ain) LED is on. The icemak er drains the e vapor at or and reservoir once e very 1 2 hr . A manual drain is pr ovided when cleaning the icemak er by moving the contr ol switch fr om the "ICE" position to the "DRAIN" position.
25 if def ectiv e. If 24V AC is pr esent, check f or 24V AC at GMPR t er minal #2 (P wire) to a neutr al (LBU wir e). If 24V A C is not pr esent, chec k GMPR continuity bet ween terminals #2 (P wire) and #6 (LB U wir e). If open, replace GMPR. Next, chec k for 24V A C at D V .
26 C. Control Boar d Check Bef or e r eplacing CB that does not sho w a visib le def ect and that y ou suspect is bad, conduct the f ollo wing CB chec k. This procedur e will help y ou v erify your diagnosis . Bef or e pr oceeding , chec k f or proper v oltage per unit nameplat e.
27 •IcemakingContr olCircuit: Theicemakingcontrolcir cuitconsistsof WCR,CS ,and BC . The icemaking control cir cuit activ ates once UF/S closes. Once CB reads a closed circuit thr ough WCR, CS , and BC , CB then star ts the 60-sec.
28 b) Opti-Ser v e Model – "ICE" and "AM" LEDs ar e on: (1) "CONTINUOUS" Mode: Bef or e eng aging the ice dispense Opti-Ser v e sensor , check f or 5VDC from the locations giv en in the table belo w . If VDC is dif fer ent than in the tab le , r eplace CB .
29 • W at erDispenseS witch/W aterDispenseSensor a) P ush But t on Model: The wat er dispense but ton and DispWV ar e not associated with CB.
30 8) Drain Cy cle – "FLUSH" (dr ain) LED is on: 1 2-hr . DCT terminates or CS is mo v ed to "DRAIN" position. 1 50-sec. shutdown sequence st ar ts. 90 seconds later , Comp de-energiz es and Comp LED tur ns of f . 60 seconds af t er Comp de-ener gizes, GM de-energiz es and GM LED tur ns of f .
31 D . Bin Contr ol Check 1) Remo ve the fr ont and t op panels. 2) Remo ve the st orage bin co ver . If necessar y , dispense ice so that the BC actuator is not engaged or r emov e the ice manuall y . W ARNING! Care should be tak en to a v oid the agitat or dur ing BC testing.
32 E. Float S witch Chec k and Cleaning 1 . Float Switch Chec k 1) Remo ve the fr ont panel, then mak e sur e the pow er s witch is in the "ON" position. 2) Mov e the control s witch to the "DRAIN" position. 3) Engage the saf et y s witch and allow the e vaporat or and reser v oir t o drain.
33 2. Float Switc h Cleaning Depending on local wat er conditions, scale ma y b uild up on F/S . Scale on F/S can cause inconsistent oper ation of UF/S and LF/S . In this case, both UF/S and LF/S should be cleaned and check ed. 1) Mov e the control s witch to the "OFF" position.
34 F . Diagnostic Charts Bef or e consulting the diagnostic char ts, chec k for corr ect installation, proper v oltage per unit nameplate , and adequate wat er pressur e (1 0 to 1 1 3 PSIG). Check CB using the st eps in "IV .C . Control Boar d Check.
35 Ice Pur ge Cyc le 1. Contr ol Boar d a) No power t o gear motor . 2. Gear Motor a) External prot ect or (gear motor o verload) open. b) Internal prot ect or open. c) Motor winding open. d) Mechanical f ailure . 3. Coupling a) Def ectiv e. F reeze Cyc le 1.
36 2. Ice/W at er Dispense Ice Dispense Push But ton 1. P ower Suppl y a) See "Star tup ." 2. Control Boar d a) Ice dispense s witch cir cuit open or no pow er . b) No power t o ice dispense solenoid, ice dispense motor , or agitating motor .
37 3. Opti-Ser v e (OS) Sensor s Be sure t o check all it ems in section "IV .F .2. Ice/W ater Dispense" prior to using this char t. Use the f ollo wing char ts along with the wiring diagram to tr oubleshoot the OS sensor s . Ice Sensor 1. OS Sensor a) Dir ty .
38 V . R emo v al and Replacement of Components W ARNING • Thisicemakershouldbediagnosedandr epairedonl yb yquali edser vice personnel t o reduce the risk of death, electr ic shoc k, serious injur y , or re .
39 1 . Refriger ant R eco v ery This icemaker is pr ovided with r efrigerant access v alv es. Using proper r efr igerant practices , r ecov er the refrigerant fr om the ser vice v alv es and st or e it in an appr ov ed container . Do not discharge the r efrigerant int o the atmospher e.
40 4) Close the low -side val v e and high-side val v e on the g auge manif old. 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.
41 F ig. 2 Extruding Head and Upper Bearing Ev aporat or Allen Head C ap Scre w with W asher Allen Head C ap Scre w Housing and Low er Bearing Gear Motor Spline Coupling O-Ring Mechanical Seal A uger .
42 1 . Upper Bearing W ear Check T o ensure that the bearing inside the e xtruding head does not ex ceed the wear t olerance of .02", f ollo w the instructions below . See Fig . 3. 1) Mov e the control s witch to the "OFF" position, then turn off the po wer supply .
43 9) Mov e the power s witch to the "ON" position, then r eplace the panels in their corr ect positions. 1 0) T ur n on the power suppl y , then mov e the control s witch to the "ICE" position t o star t the automatic icemaking pr ocess.
44 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) Remo ve the fr ont co v er of the st orage bin. Remo ve spout B , then r emov e spout A. See F ig . 2. 6) Remo ve the allen head cap scr e ws securing the extruding head.
45 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 .
46 6. Remo v al and R eplacement of Gear Mot or 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 .
47 7 . Dispense A uger and Agitat or 1) Mov e the control s witch to the "OFF" position, then turn off the po wer supply . Remo v e the front and t op panels, then mov e the power s witch to the "OFF" position. 2) Remo ve the fr ont co v er of the st orage bin.
48 VI. Cleaning and Maintenance This icemaker m ust be cleaned and maintained in accor dance with the instr uction manual and labels pr o vided with the icemak er . Consult with your local distrib ut or about cleaning and maintenance service. T o obtain the name and phone number of your local distrib ut or , visit www .
49 A. Cleaning and Sanitizing Instructions Hoshizaki recommends cleaning and sanitizing this icemak er at least t wice a year . More fr equent cleaning and sanitizing, ho we ver , may be r equired in some e xisting water conditions.
50 9)Inbadorse v erewat erconditions,cleanthe oats witchassembl yasdescribedbelow . Otherwise, contin ue t o st ep 1 0. a. Remov ethe oats witchassemb l yfr omther eser v oircover .
51 9) Mov e the control s witch to the "ICE" position. Open the icemaker w at er suppl y line shut-of f val ve t o suppl y wat er to the r eser v oir . 1 0) Af ter the gear mot or star ts , mov e the control s witch to the "DRAIN" position.
52 8) Remo ve the spout co v er , ice dispense spout, and wat er dispense nozzle. See Fig . 7 . 9) Immerse the agit at or , dispense auger , and par ts r emov ed in steps 5 thr ough 8 in the cleaning solution and then in the sanitizing solution f or 1 5 minut es each.
53 B. Maintenance The maintenance schedule belo w is a guideline. More fr equent maintenance ma y be requir eddependingonwat erquality ,theicemak er'sen vir onment,andlocalsanitation regulations . W ARNING •Onlyquali edser vicetechniciansshouldservicethisicemaker .
54 C. Pr eparing the Icemak er f or Per iods of Non-Use NO TICE When st or ing the icemak er f or an ext ended time or in sub-freezing temper atur es , f ollo w the instructions below t o pr e v ent damage.
55 VII. Disposal This icemaker cont ains r efrigerant and must be disposed of in accor dance with applicable national, st at e , and local codes and r egulations.
An important point after buying a device Hoshizaki DCM 300BAH(-OS) (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Hoshizaki DCM 300BAH(-OS) yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Hoshizaki DCM 300BAH(-OS) - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Hoshizaki DCM 300BAH(-OS) you will learn all the available features of the product, as well as information on its operation. The information that you get Hoshizaki DCM 300BAH(-OS) will certainly help you make a decision on the purchase.
If you already are a holder of Hoshizaki DCM 300BAH(-OS), but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Hoshizaki DCM 300BAH(-OS).
However, one of the most important roles played by the user manual is to help in solving problems with Hoshizaki DCM 300BAH(-OS). Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Hoshizaki DCM 300BAH(-OS) along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
