Instruction/ maintenance manual of the product KMS-1401MLJ Hoshizaki
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Hoshizaki “A Superior Degr ee of Reliability” www .hoshizaki.com Model KMS-1401MLJ Including Condensing Unit Models SRK-14J/3 Modular Crescent Cuber Serenity Series Hoshizaki America, Inc.
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 D . Contr ol and Ser vice Switches ..................................................................................... 23 1 . Contr ol Switch ........................................................................................................ 23 2.
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 icemaker , or damage to pr oper t y . W ARNING Indicates a hazar dous situation which could r esult in death or serious injury .
6 W ARNING, continued F or KMS • P ow er suppl y and gr ound connection ar e supplied fr om the SRK r emot e condensing unit via the wire harness pro vided.
7 AC SUPPLY VOLTAGE 115VAC Supplied by SRK-14J via Factory Supplied W ire Harnes s APPROXIMAT E ICE PRODUCTION Ambient W ATER T EMP. (°F) PER 24 HR. Tem p.
8 2. KMS-1 40 1MLJ with SRK-14J3 Note: We r eserve the right to mak e changes in specications and design without prior notice. Data P ending.
9 AC SUPPLY VOLTAGE 208-230/60/1 ( 3 wire with neutral for 115V ) (115VAC Supplied to KMS via Factory Wire Harness) AMPERAGE 13.5 A ( 5 Min. Freeze AT 104°F / WT 80°F ) MINIMUM CIRCUIT AMPACITY 20 A.
10 2. SRK-1 4J3 Note: We r eserve the right to mak e changes in specications and design without prior notice. Data P ending.
11 II. General Inf ormation A. Construction 1 . Icemaker Spra y T ubes Hot Gas V alv e Liquid Line V alv e Ser vice V alv e (High Side) Drier W ash V alv e Ser vice V alv e (Low Side) Fill/R ell W .
12 2. Condensing Unit Condenser Headmaster (C .P .R.) Hot Gas V alv es Liquid Line V alv e Receiv er Accum ulator Shut-Of f V alv e (Low Side) Thermostat (Discharge Pipe) Compr essor Shut-Of f V alve .
13 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, the r ed "PO WER OK" LED and the gr een "BC CLOSED" LED on the CB turn on (If yello w "BC OPEN" LED is on, the icemaker will not st ar t.
14 d) Pump-Out Cy cle LEDs 1, 3, and 2 ar e on . Comp and FMRs r emain ener gized, HGVs and X1 0 rela y energiz e. LL Vs de-energize . PM stops f or 2 seconds, then X1 1 rela y energizes , allowing PM and D V to ener gize f or 1 0 or 20 seconds (S4 dip switch 3 & 4).
15 • Minimum freez e time: 5 min. • Maximum freez e time: freeze timer set ting (S4 dip switch 9 & 1 0). 2. Sequence Flow Chart Components Energized when the Contr ol S witch is in the "S.
16 C. Control Boar d • A Hoshizaki e x clusive contr ol board is emplo yed in the Hoshizaki icemak er s. • All models are pr etest ed and f actor y adjust ed. • F or a contr ol boar d chec k pr ocedur e, see "IV .B . Contr ol Boar d Chec k.
17 1 . Control Board Lay out "G" Control Boar d P ar t Number 2A3792-0 1 "G" Contr ol Boar d • P ow er LED (red) (lights when 1 0.
18 2. LED Lights and Audib le Alarm Saf eties At star tup , a 5-second delay occur s while the control boar d conducts an int er nal timer check. A beep occur s when the control s witch is mov ed to the "ICE" position. The red LED indicates pr oper control v oltage and remains on unless a contr ol v oltage prob lem occurs .
19 3. Controls and Adjustments NO TICE Dip s witches ar e f actor y set. F ailure t o maintain f actory set tings ma y adver sel y af fect perf or mance and warr anty cov erage . F or mor e inf ormation, contact Hoshizaki T echnical Suppor t at 1 -800-233-1 940.
20 c) Pump-Out Timer (S4 dip switch 3 & 4) The 1st pump-out occurs af ter the 1 1th freeze c y cle , then e ver y 1 0th cycle ther eaf t er . When a pump-out is called f or , the X1 0rela y is energiz ed and the X1 3 rela y is de-energiz ed to allow the dr ain v alv e t o ener gize .
21 e) Harvest P ump Timer (S4 dip switch 7) NO TICE F actory set for pr oper operation. Do not adjust. Adjustment outside of the f actor y def ault set ting ma y r esult in damage t o the icemak er . Depending on the har v est pump timer set ting, the pump mot or either sta ys of f or is energiz ed the last 50 seconds of har vest.
22 h) Float S witch Select or (S5 dip s witch 1) NO TICE Do not adjust. This must be lef t in the f actor y def ault position or the icemaker will not operat e corr ectl y .
23 D . Contr ol and Ser vice S witches 2 s witches ar e used t o contr ol the operation of the icemak er . These switches ar e ref erred to as contr ol switch and service switch.
24 Spra y T ube KMS-1 40 1MLJ Har v est W at er V alv e W at er Supply W ash V alve Liquid Line V alv e Drier Ser vice V alve Liquid Line V alv e Shutof f Va l v e SRK-1 4J/3 Fa n Condenser Headmaster (C .
25 B. W iring Diagrams 1 . KMS-140 1MLJ with SRK-1 4J * High-P ressur e S witch Cut-out 426± 22 PSIG Cut-in 341±22 PSIG 0 Ther mostat S witch Cut-out 266°F±9°F (130°C± 5°C) Cut-in 239°F±9°F (1 1 5°C±5°C) ** * ** Contr ol T ransf or mer Output 1 0.
26 2. KMS-1 40 1MLJ with SRK-14J3 * High-P ressur e S witch Cut-out 426± 22 PSIG Cut-in 341±22 PSIG 0 Ther mostat S witch Cut-out 266°F±9°F (130°C± 5°C) Cut-in 239°F±9°F (1 1 5°C±5°C) ** * ** Contr ol T ransf or mer Output 1 0.
27 3. Wir e Harness Connections Cont actor HGV L LV Neutral F use 1 0A CB HGV L LV Neutral SRK Condensing Unit W ir e Harness Connections BR V P BK W BR GR GND V P BK W GR BR V P BK W GR BR V P BK W G.
28 C. P erf ormance Data 1 . KMS-140 1MLJ with SRK-1 4J Note: 1 . P ressur e data is recor ded at 5 minutes int o freezing cy cle. The data not in bold should be used f or r ef erence onl y . 2. W e reser v e the right to mak e changes in specications and design without prior notice.
29 2. KMS-1 40 1MLJ with SRK-14J3 Note: 1 . P ressur e data is recor ded at 5 minutes int o freezing cy cle. The data not in bold should be used f or r ef erence onl y . 2. W e reser v e the right to mak e changes in specications and design without prior notice.
30 IV . Service Diagnosis W ARNING • This icemaker should be diagnosed and r epaired onl y b y quali ed ser vice personnel t o reduce the risk of death, electr ic shoc k, serious injur y , or re . • Risk of electric shock. Use extr eme caution and ex ercise saf e electr ical practices .
31 4) Initial Harvest Cy c le – LEDs 1, 4, and 2 are on. Comp , FMRs, HGVs , X1 0 rela y , WV2, X1 2, and X1 3 r ela ys ener gize . WV1 de-ener giz es. CBmonitor s the war ming of the e v aporator via the thermistor locat ed on the suction line. When the thermistor r eaches 48°F (9°C), CB reads 3.
32 5) F r eeze Cyc le – LED 1 and 4 are on. Comp , FMRs, and PM r emain energized (CB K1 connector pin #5 (DB U wir e) de-ener giz es and K1 connect or pin #4 (R wire) ener gizes to pr ev ent PM interruption). LL Vs energize . WV1 and LED 4 energize f or 1 min.
33 6) Pump-Out Cy cle – LEDs 1, 3, and 2 are on (1 0/20 second pump-out) – The 1st pump-out occurs af ter the 1 1th freeze c y cle , then e ver y 1 0th cycle ther eaf t er . Comp and FMRs remain ener gized. HGVs and X1 0 rela y energiz e. LL Vs de-ener gize .
34 B. 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, alw ay s conduct the follo wing chec k pr ocedur e. This procedur e will help you v erify your diagnosis. Alar m R eset: If CB is in alar m (beeping), press the "ALARM RESET" b ut ton on CB while CB is beeping.
35 C. Bin Control Chec k and Cleaning This icemaker uses a BC with a le v er -actuated pr oximity s witch t o contr ol the ice le vel in the stor age bin. No adjustment is requir ed. 1 . Bin Control Check T o check BC , follo w the st eps belo w . 1) T ur n of f the power suppl y .
36 2. Bin Control Cleaning Scale ma y b uild up on BC . Scale can cause the actuator paddle and magnet t o stick. In this case, BC should be cleaned. W ARNING CHOKING HAZARD: Ensure all components , fast eners, and thumbscr ews ar e securel y in place af t er the icemak er is ser viced.
37 D . Float S witch Check and Cleaning F/S is used to det er mine that there is suf ficient w ater in the wat er tank af ter the 1 -minute ll c y cle and af ter each harvest cy cle. F/S is also used to det er mine that the appr opriate v olume of wat er has been conv er ted int o ice befor e switching out of the fr eez e cy cle.
38 20) Reconnect F/S connect or to CB K5 (b lac k) connect or , then r eplace the contr ol bo x cov er , r ight side, and t op panels in their correct positions. 21) Mov e the control s witch to the "ICE" position. 22) Replace the fr ont panel in its correct position.
39 E. Thermist or Chec k T o check thermistor r esistance , f ollow the steps belo w . 1) T ur n of f the power suppl y . 2) Remo ve the fr ont panel, then mo v e the contr ol s witch to the "OFF" position. 3) Remo ve the t op and right side panels, then r emov e the control bo x cov er .
40 F . Diagnostic Charts 1 . No Ice Production No Ice Pr oduction - Possib le Cause 1. P ower Suppl y a) Of f, b lown fuse , or tripped break er . b) Not within specications. 2. Main T ransf ormer (208-230V AC/1 1 5V A C) (3 Phase Only) a) V oltage tap s witch not set t o pr oper v oltage .
41 No Ice Pr oduction - Possib le Cause 15 . Compr essor a) Compr essor r ela y/magnetic contact or contacts bad or coil winding open. b) Star t capacit or or run capacitor def ectiv e (single phase onl y). c) Int ernal protect or open. d) Star t r ela y contacts bad or coil winding open (single phase onl y).
42 F reeze-Up - P ossible Cause 6. Float Switch See "IV .D . Float S witch Chec k and Cleaning" a) Dir ty , sticking . b) Def ectiv e. 7. Refrigerant Char ge a) L o w. 8. Control Boar d See "II.C .3. Contr ols and Adjustments" and "IV .
43 3. Low Ice P r oduction Low Ice P r oduction - P ossible Cause Long Harvest Cy cle 1. Ev aporat or a) Scaled up . 2. Spray T ubes and/or Spra y Guides a) Dir ty . b) Out of position. 3. Refrigerant Charge a) L o w. 4. Wat er Supply a) Low w ater pr essure.
44 V . R eplacement of Components W ARNING • This icemaker should be diagnosed and r epaired onl y b y quali ed ser vice personnel t o reduce the risk of death, electr ic shoc k, serious injur y , or re . • Mov e the control s witch to the "OFF" position and turn off the po wer supply bef or e ser vicing .
45 2. Brazing W ARNING • R-404A itself is not ammab le at atmospheric pressur e and temperatur es up t o 1 7 6°F (80°C). • R-404A itself is not e xplosiv e or poisonous.
46 2) T ur n on the vacuum pump . Open the gauge manif old val v es , then open the high and low -side refrigerant shutof f val v es . Nev er allow the oil in the v acuum pump t o ow backw ards. 3) Allow the v acuum pump to pull down t o a 29.9" Hg vacuum.
47 B. Impor tant Not es f or Component R eplacement NO TICE When r eplacing a component listed belo w , see the notes t o help ensur e pr oper operation. Component Notes Compr essor 1 Phase: Install a new st ar t capacitor , r un capacitor , and star t rela y .
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 Hoshizaki C er ti ed Ser vice R epr esentativ e about cleaning and maintenance ser vice.
49 1 . Cleaning Procedur e 1) Dilute 22 . oz. (650 ml) of Hoshizaki "Scale A wa y" with 4 gal. (1 5 l) of warm water . 2) Remo ve all ice fr om the e vaporat or and the dispenser unit/storage bin. Note: T o r emov e cubes on the e v aporat or , tur n of f the po wer suppl y and turn it back on af ter 3 minut es.
50 21) Remo ve the fr ont panel. 22) Mov e the control s witch to the "SER VICE" position, then mov e the ser vice s witch t o the "W ASH" position. 23) Replace the fr ont panel in its correct position. 24) T ur n on the power suppl y to rinse of f the cleaning solution.
51 B. Maintenance This icemaker m ust be maintained individuall y , ref erring to the instruction manual and labels pro vided with the icemaker . W ARNING • Only quali ed ser vice technicians should service this icemaker .
52 C. Pr eparing the Icemak er f or Per iods of Non-Use NO TICE • When st oring the icemaker f or an ext ended time or in sub-freezing t emperatur es, f ollo w the instructions below t o pr e v ent damage.
53 F ill/Re ll W ater V alv e F ill/Re ll W ater V alv e Hose 1 7) F rom the tee on the dr ain hose , b low out the dr ain v alv e using compr essed air or carbon dio xide . 1 8) Mov e the ser vice s witch to the "CIRC ." position and the control s witch to the "OFF" position.
54 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 KMS-1401MLJ (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 KMS-1401MLJ 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 KMS-1401MLJ - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Hoshizaki KMS-1401MLJ you will learn all the available features of the product, as well as information on its operation. The information that you get Hoshizaki KMS-1401MLJ will certainly help you make a decision on the purchase.
If you already are a holder of Hoshizaki KMS-1401MLJ, 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 KMS-1401MLJ.
However, one of the most important roles played by the user manual is to help in solving problems with Hoshizaki KMS-1401MLJ. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Hoshizaki KMS-1401MLJ 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
